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  • 7801201RB图
  • 深圳市一线半导体有限公司

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  • 7801201RB
  • 数量16500 
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产品型号7801201SA的Datasheet PDF文件预览

SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244  
SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244  
OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS  
SDLS144B – APRIL 1985 – REVISED FEBRUARY 2002  
SN54LS’, SN54S’ . . . J OR W PACKAGE  
3-State Outputs Drive Bus Lines or Buffer  
Memory Address Registers  
SN74LS240, SN74LS244 . . . DB, DW, N, OR NS PACKAGE  
SN74LS241 . . . DW, N, OR NS PACKAGE  
SN74S’ . . . DW OR N PACKAGE  
PNP Inputs Reduce DC Loading  
(TOP VIEW)  
Hysteresis at Inputs Improves Noise  
Margins  
1G  
1A1  
2Y4  
1A2  
2Y3  
1A3  
2Y2  
1A4  
2Y1  
GND  
V
CC  
2G/2G  
1
2
3
4
5
6
7
8
9
10  
20  
19  
18  
17  
16  
15  
14  
description  
1Y1  
2A4  
1Y2  
2A3  
These octal buffers and line drivers are designed  
specifically to improve both the performance and  
density of three-state memory address drivers,  
clock drivers, and bus-oriented receivers and  
transmitters. The designer has a choice of  
selected combinations of inverting and  
noninverting outputs, symmetrical, active-low  
output-control (G) inputs, and complementary  
output-control (G and G) inputs. These devices  
featurehighfan-out, improvedfan-in, and400-mV  
noise margin. The SN74LS’ and SN74S’ devices  
can be used to drive terminated lines down to  
133 .  
1Y3  
13 2A2  
12 1Y4  
11  
2A1  
2G for ’LS241 and ’S241 or 2G for all other drivers.  
SN54LS’, SN54S’ . . . FK PACKAGE  
(TOP VIEW)  
3
2
1
20 19  
18  
1Y1  
2A4  
1Y2  
2A3  
1Y3  
1A2  
2Y3  
1A3  
2Y2  
1A4  
4
5
6
7
8
17  
16  
15  
14  
9 10 11 12 13  
2G for ’LS241 and ’S241 or 2G for all other drivers.  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
Copyright 2002, Texas Instruments Incorporated  
On products compliant to MIL-PRF-38535, all parameters are tested  
unless otherwise noted. On all other products, production  
processing does not necessarily include testing of all parameters.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244  
SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244  
OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS  
SDLS144B APRIL 1985 REVISED FEBRUARY 2002  
ORDERING INFORMATION  
ORDERABLE  
PART NUMBER  
TOP-SIDE  
MARKING  
PACKAGE  
T
A
SN74LS240N  
SN74LS240N  
SN74LS241N  
SN74LS244N  
SN74S240N  
SN74S241N  
SN74S244N  
SN74LS241N  
SN74LS244N  
SN74S240N  
SN74S241N  
SN74S244N  
PDIP N  
Tube  
Tube  
SN74LS240DW  
SN74LS240DWR  
SN74LS241DW  
SN74LS241DWR  
SN74LS244DW  
SN74LS244DWR  
SN74S240DW  
LS240  
LS241  
LS244  
S240  
Tape and reel  
Tube  
Tape and reel  
Tube  
0°C to 70°C  
Tape and reel  
Tube  
SOIC DW  
Tape and reel  
Tube  
SN74S240DWR  
SN74S241DW  
S241  
Tape and reel  
Tube  
SN74S241DWR  
SN74S244DW  
S244  
Tape and reel  
SN74S244DWR  
SN74LS240NSR  
SN74LS241NSR  
SN74LS244NSR  
SN74LS240DBR  
SN74LS244DBR  
74LS240  
74LS241  
74LS244  
LS240  
SOP NS  
Tube  
SSOP DB  
Tape and reel  
LS244  
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at  
www.ti.com/sc/package.  
2
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244  
SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244  
OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS  
SDLS144B APRIL 1985 REVISED FEBRUARY 2002  
ORDERING INFORMATION (CONTINUED)  
ORDERABLE  
PART NUMBER  
TOP-SIDE  
MARKING  
PACKAGE  
T
A
SN54LS240J  
SN54LS240J  
SNJ54LS240J  
SN54LS241J  
SNJ54LS241J  
SN54LS244J  
SNJ54LS244J  
SN54S240J  
SNJ54LS240J  
SN54LS241J  
SNJ54LS241J  
SN54LS244J  
SNJ54LS244J  
SN54S240J  
CDIP J  
Tube  
SNJ54S240J  
SN54S241J  
SNJ54S240J  
SN54S241J  
SNJ54S241J  
SN54S244J  
SNJ54S241J  
SN54S244J  
SNJ54S244J  
SNJ54LS240W  
SNJ54LS241W  
SNJ54LS244W  
SNJ54S240W  
SNJ54S241W  
SNJ54S244W  
SNJ54LS240FK  
SNJ54LS241FK  
SNJ54LS244FK  
SNJ54S240FK  
SNJ54S241FK  
SNJ54S244FK  
SNJ54S244J  
SNJ54LS240W  
SNJ54LS241W  
SNJ54LS244W  
SNJ54S240W  
SNJ54S241W  
SNJ54S244W  
SNJ54LS240FK  
SNJ54LS241FK  
SNJ54LS244FK  
SNJ54S240FK  
SNJ54S241FK  
SNJ54S244FK  
55°C to 125°C  
CFP W  
Tube  
Tube  
LCCC FK  
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at  
www.ti.com/sc/package.  
3
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244  
SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244  
OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS  
SDLS144B APRIL 1985 REVISED FEBRUARY 2002  
schematics of inputs and outputs  
S240, S241, S244  
EQUIVALENT OF EACH INPUT  
LS240, LS241, LS244  
EQUIVALENT OF EACH INPUT  
V
CC  
V
CC  
Req  
9 kNOM  
Input  
Input  
G and G inputs: R = 2 kNOM  
eq  
A inputs: R = 2.8 kNOM  
eq  
TYPICAL OF ALL OUTPUTS  
V
CC  
R
Output  
GND  
LS240. LS241, LS244: R = 50 NOM  
S240, S241, S244: R = 25 NOM  
4
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244  
SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244  
OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS  
SDLS144B APRIL 1985 REVISED FEBRUARY 2002  
logic diagram  
LS240, S240  
LS241, S241  
1
1G  
1
1G  
18  
16  
14  
12  
2
4
1Y1  
1Y2  
1A1  
1A2  
1A3  
18  
16  
14  
12  
2
4
6
8
1Y1  
1Y2  
1A1  
1A2  
1A3  
6
1Y3  
1Y4  
1Y3  
1Y4  
8
1A4  
2G  
1A4  
2G  
19  
19  
9
7
5
3
9
11  
13  
15  
17  
11  
13  
15  
17  
2Y1  
2A1  
2A2  
2A3  
2A4  
2Y1  
2Y2  
2A1  
2A2  
2A3  
2A4  
7
5
3
2Y2  
2Y3  
2Y4  
2Y3  
2Y4  
LS244, S244  
1
1G  
18  
2
4
6
8
1Y1  
1A1  
1A2  
1A3  
16  
14  
12  
1Y2  
1Y3  
1Y4  
1A4  
19  
2G  
9
7
5
3
11  
13  
15  
17  
2Y1  
2A1  
2A2  
2A3  
2A4  
2Y2  
2Y3  
2Y4  
Pin numbers shown are for DB, DW, J, N, NS, and W packages.  
5
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244  
SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244  
OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS  
SDLS144B APRIL 1985 REVISED FEBRUARY 2002  
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)  
Supply voltage, V  
(see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V  
CC  
Input voltage, V : LS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V  
I
S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V  
Off-state output voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 V  
Package thermal impedance, θ (see Note 2): DB package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70°C/W  
JA  
DW package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58°C/W  
N package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69°C/W  
NS package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60°C/W  
Storage temperature range, T  
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65°C to 150°C  
stg  
Stresses beyond those listed under absolute maximum ratingsmay cause permanent damage to the device. These are stress ratings only, and  
functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditionsis not  
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.  
NOTES: 1. Voltage values are with respect to network ground terminal.  
2. The package thermal impedance is calculated in accordance with JESD 51-7.  
recommended operating conditions  
SN54LS’  
MIN NOM  
SN74LS’  
UNIT  
MAX  
MIN NOM  
MAX  
V
V
V
Supply voltage (see Note 1)  
High-level input voltage  
Low-level input voltage  
4.5  
2
5
5.5  
4.75  
2
5
5.25  
V
V
CC  
IH  
0.7  
12  
12  
0.8  
15  
24  
V
IL  
I
High-level output current  
Low-level output current  
Operating free-air temperature  
mA  
mA  
°C  
OH  
OL  
I
T
A
55  
125  
0
70  
NOTE 1: Voltage values are with respect to network ground terminal.  
6
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244  
SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244  
OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS  
SDLS144B APRIL 1985 REVISED FEBRUARY 2002  
electrical characteristics over recommended operating free-air temperature range (unless  
otherwise noted)  
SN54LS’  
SN74LS’  
PARAMETER  
UNIT  
TEST CONDITIONS  
MIN TYP  
MAX  
MIN TYP  
MAX  
V
V
V
V
= MIN,  
= MIN  
I = 18 mA  
1.5  
1.5  
V
V
IK  
Hysteresis  
(V V  
CC  
I
0.2  
2.4  
2
0.4  
3.4  
0.2  
2.4  
2
0.4  
3.4  
CC  
)
T–  
T+  
= MIN,  
= 3 mA  
V
V
= 2 V,  
= 2 V,  
V
= MAX,  
= 0.5 V,  
CC  
OH  
IH  
IL  
I
V
V
V
OH  
OL  
V
= MIN,  
= MAX  
V
IL  
CC  
OH  
IH  
I
I
I
= 12 mA  
= 24 mA  
0.4  
0.4  
0.5  
V
V
= MIN,  
= MAX  
V
IH  
= 2 V,  
OL  
CC  
IL  
V
OL  
V
V
= MAX,  
= MAX  
CC  
IL  
I
I
V
V
= 2 V,  
= 2 V,  
V
= 2.7 V  
= 0.4 V  
20  
20  
µA  
µA  
OZH  
IH  
O
O
V
V
= MAX,  
= MAX  
CC  
IL  
V
20  
20  
OZL  
IH  
I
I
I
I
V
V
V
V
= MAX,  
= MAX,  
= MAX,  
= MAX,  
V = 7 V  
0.1  
20  
0.1  
20  
mA  
µA  
I
CC  
CC  
CC  
CC  
I
V = 2.7 V  
I
IH  
IL  
V
IL  
= 0.4 V  
0.2  
225  
27  
0.2  
225  
27  
mA  
mA  
§
40  
40  
OS  
Outputs high  
Outputs low  
All  
17  
26  
27  
29  
32  
17  
26  
27  
29  
32  
LS240  
44  
44  
V
CC  
= MAX,  
I
LS241, LS244  
LS240  
46  
46  
mA  
CC  
Output open  
50  
50  
Outputs disabled  
LS241, LS244  
54  
54  
§
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.  
All typical values are at V = 5 V, T = 25°C.  
Not more than one output should be shorted at a time, and duration of the short-circuit should not exceed one second.  
CC  
A
switching characteristics, V  
= 5 V, T = 25°C (see Figure 1)  
CC  
A
LS240  
TYP  
9
LS241, LS244  
PARAMETER  
TEST CONDITIONS  
MIN  
UNIT  
ns  
MAX  
14  
MIN  
TYP  
12  
MAX  
t
t
t
t
t
t
18  
18  
30  
23  
20  
25  
PLH  
PHL  
PZL  
PZH  
PLZ  
PHZ  
R
R
R
= 667 Ω,  
= 667 Ω,  
= 667 Ω,  
C
C
= 45 pF  
= 45 pF  
= 5 pF  
L
L
L
L
L
12  
18  
12  
20  
30  
20  
ns  
15  
23  
15  
10  
20  
10  
ns  
C
L
15  
25  
15  
7
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244  
SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244  
OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS  
SDLS144B APRIL 1985 REVISED FEBRUARY 2002  
recommended operating conditions  
SN54S’  
SN74S’  
UNIT  
MIN NOM  
MAX  
MIN NOM  
MAX  
V
V
V
Supply voltage (see Note 1)  
High-level input voltage  
4.5  
2
5
5.5  
4.75  
2
5
5.25  
V
V
CC  
IH  
Low-level input voltage  
0.8  
12  
48  
0.8  
15  
64  
V
IL  
I
High-level output current  
mA  
mA  
kΩ  
°C  
OH  
OL  
I
Low-level output current  
External resistance between any input and V  
or ground  
40  
40  
CC  
T
A
Operating free-air temperature (see Note 3)  
55  
125  
0
70  
NOTES: 1. Voltage values are with respect to network ground terminal.  
3. An SN54S241J operating at free-air temperature above 116°C requires a heat sink that provides a thermal resistance from case  
to free air, R , of not more that 40°C/W.  
CA  
θ
electrical characteristics over recommended operating free-air temperature range (unless  
otherwise noted)  
SN54S’  
SN74S’  
PARAMETER  
UNIT  
TEST CONDITIONS  
MIN TYP  
MAX  
MIN TYP  
MAX  
V
V
V
V
= MIN,  
= MIN  
I = 18 mA  
1.2  
1.2  
V
V
IK  
Hysteresis  
(V V  
CC  
I
0.2  
0.4  
3.4  
0.2  
2.7  
2.4  
2
0.4  
3.4  
CC  
)
T–  
T+  
= MIN  
= 1 mA  
V
IH  
V
IH  
V
IH  
V
IH  
V
IH  
V
IH  
= 2 V,  
= 2 V,  
= 2 V,  
= 2 V,  
= 2 V,  
= 2 V,  
V
= 0.8 V,  
= 0.8 V,  
= 0.5 V,  
= 0.8 V,  
CC  
OH  
IL  
IL  
IL  
IL  
I
V
= MIN,  
= 3 mA  
V
V
V
CC  
OH  
2.4  
2
V
OH  
V
I
V
= MIN,  
= MAX  
CC  
OH  
I
V
= MIN,  
= MAX  
CC  
V
OL  
0.55  
50  
0.55  
50  
V
I
OL  
V
V
= MAX,  
= 0.8 V  
CC  
IL  
I
I
V
V
= 2.4 V  
= 0.5 V  
µA  
µA  
OZH  
O
V
V
= MAX,  
= 0.8 V  
CC  
IL  
50  
50  
OZL  
O
I
I
V
= MAX,  
= MAX,  
V = 5.5 V  
1
50  
1
50  
mA  
µA  
I
CC  
CC  
I
V
V = 2.7 V  
I
IH  
Any A  
Any G  
400  
2  
400  
2  
µA  
I
V
= MAX,  
= MAX  
V = 0.5 V  
I
IL  
CC  
CC  
mA  
mA  
§
I
V
50  
225  
123  
147  
145  
170  
145  
170  
50  
225  
135  
160  
150  
180  
150  
180  
OS  
S240  
80  
95  
80  
95  
Outputs high  
Outputs low  
S241,S244  
S240  
100  
120  
100  
120  
100  
120  
100  
120  
V
CC  
= MAX,  
I
mA  
CC  
Output open  
S241, S244  
S240  
Outputs disabled  
S241, S244  
§
For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions.  
All typical values are at V = 5 V, T = 25°C.  
Not more than one output should be shorted at a time, and duration of the short-circuit should not exceed one second.  
CC  
A
8
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244  
SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244  
OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS  
SDLS144B APRIL 1985 REVISED FEBRUARY 2002  
switching characteristics, V  
= 5 V, T = 25°C (see Figure 2)  
CC  
A
S240  
TYP  
4.5  
4.5  
10  
S241, S244  
PARAMETER  
TEST CONDITIONS  
MIN  
UNIT  
ns  
MAX  
7
MIN  
TYP  
6
MAX  
9
t
t
t
t
t
t
PLH  
PHL  
PZL  
PZH  
PLZ  
PHZ  
R
R
R
= 90 Ω,  
= 90 Ω,  
= 90 Ω,  
C
C
= 50 pF  
= 50 pF  
= 5 pF  
L
L
L
L
L
7
6
9
15  
10  
15  
9
10  
8
15  
12  
15  
9
ns  
6.5  
10  
10  
6
ns  
C
L
6
9
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244  
SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244  
OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS  
SDLS144B APRIL 1985 REVISED FEBRUARY 2002  
PARAMETER MEASUREMENT INFORMATION  
SERIES 54LS/74LS DEVICES  
V
CC  
Test  
Point  
R
L
Test  
Point  
S1  
V
CC  
From Output  
Under Test  
V
CC  
(see Note B)  
R
L
C
L
(see Note A)  
From Output  
Under Test  
5 kΩ  
R
L
(see Note B)  
From Output  
Under Test  
C
Test  
Point  
C
L
(see Note A)  
L
(see Note A)  
S2  
LOAD CIRCUIT  
LOAD CIRCUIT  
LOAD CIRCUIT  
FOR 2-STATE TOTEM-POLE OUTPUTS  
FOR OPEN-COLLECTOR OUTPUTS  
FOR 3-STATE OUTPUTS  
3 V  
High-Level  
Timing  
Input  
1.3 V  
1.3 V  
1.3 V  
1.3 V  
Pulse  
0 V  
t
t
h
w
t
su  
3 V  
0 V  
Low-Level  
Pulse  
Data  
Input  
1.3 V  
1.3 V  
1.3 V  
VOLTAGE WAVEFORMS  
PULSE DURATIONS  
VOLTAGE WAVEFORMS  
SETUP AND HOLD TIMES  
Output  
3 V  
0 V  
Control  
(low-level  
enabling)  
1.3 V  
1.3 V  
3 V  
0 V  
Input  
1.3 V  
1.3 V  
t
t
PLZ  
PZL  
t
t
PHL  
PLH  
Waveform 1  
(see Notes C  
and D)  
1.5 V  
In-Phase  
Output  
(see Note D)  
1.3 V  
V
V
OH  
V
OL  
+ 0.3 V  
1.3 V  
1.3 V  
1.3 V  
V
OL  
t
PHZ  
OL  
t
PZH  
t
t
PLH  
PHL  
V
OH  
Waveform 2  
(see Notes C  
and D)  
V
OH  
0.3 V  
Out-of-Phase  
Output  
(see Note D)  
V
V
OH  
1.3 V  
1.3 V  
1.5 V  
OL  
VOLTAGE WAVEFORMS  
PROPAGATION DELAY TIMES  
VOLTAGE WAVEFORMS  
ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS  
NOTES: A.  
C
includes probe and jig capacitance.  
L
B. All diodes are 1N3064 or equivalent.  
C. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.  
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.  
D. S1 and S2 are closed for t  
, t  
, t  
, and t  
; S1 is open and S2 is closed for t  
PLZ PZH  
; S1 is closed and S2 is open for t .  
PLH PHL PHZ  
PZL  
E. Phase relationships between inputs and outputs have been chosen arbitrarily for these examples.  
F. All input pulses are supplied by generators having the following characteristics: PRR 1 MHz, Z 50 , t 15 ns, t 6 ns.  
O
r
f
G. The outputs are measured one at a time with one input transition per measurement.  
Figure 1. Load Circuits and Voltage Waveforms  
10  
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244  
SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244  
OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS  
SDLS144B APRIL 1985 REVISED FEBRUARY 2002  
PARAMETER MEASUREMENT INFORMATION  
SERIES 54S/74S DEVICES  
V
CC  
Test  
Point  
R
L
Test  
Point  
S1  
V
CC  
From Output  
Under Test  
V
CC  
(see Note B)  
R
L
C
L
(see Note A)  
From Output  
Under Test  
1 kΩ  
R
L
(see Note B)  
From Output  
Under Test  
C
Test  
Point  
C
L
(see Note A)  
L
(see Note A)  
S2  
LOAD CIRCUIT  
LOAD CIRCUIT  
LOAD CIRCUIT  
FOR 2-STATE TOTEM-POLE OUTPUTS  
FOR OPEN-COLLECTOR OUTPUTS  
FOR 3-STATE OUTPUTS  
3 V  
High-Level  
Timing  
Input  
1.5 V  
1.5 V  
1.5 V  
1.5 V  
Pulse  
0 V  
t
t
h
w
t
su  
3 V  
0 V  
Low-Level  
Pulse  
Data  
Input  
1.5 V  
1.5 V  
1.5 V  
VOLTAGE WAVEFORMS  
PULSE DURATIONS  
VOLTAGE WAVEFORMS  
SETUP AND HOLD TIMES  
3 V  
0 V  
Output  
Control  
(low-level  
enabling)  
1.5 V  
1.5 V  
3 V  
0 V  
Input  
1.5 V  
1.5 V  
t
t
PLZ  
PZL  
t
t
PHL  
PLH  
Waveform 1  
(see Notes C  
and D)  
1.5 V  
In-Phase  
1.5 V  
V
OH  
Output  
(see Note D)  
V
OL  
+ 0.5 V  
1.5 V  
1.5 V  
1.5 V  
V
OL  
V
OL  
t
t
PZH  
PHZ  
t
t
PLH  
PHL  
V
OH  
Waveform 2  
(see Notes C  
and D)  
V
OH  
0.5 V  
Out-of-Phase  
Output  
V
V
OH  
1.5 V  
1.5 V  
1.5 V  
(see Note D)  
OL  
VOLTAGE WAVEFORMS  
PROPAGATION DELAY TIMES  
VOLTAGE WAVEFORMS  
ENABLE AND DISABLE TIMES, 3-STATE OUTPUTS  
NOTES: A.  
C
includes probe and jig capacitance.  
L
B. All diodes are 1N3064 or equivalent.  
C. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control.  
Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control.  
D. S1 and S2 are closed for t  
, t  
, t  
, and t  
; S1 is open and S2 is closed for t  
PLZ PZH  
; S1 is closed and S2 is open for t .  
PZL  
PLH PHL PHZ  
E. All input pulses are supplied by generators having the following characteristics: PRR 1 MHz, Z 50 ; t and t 7 ns for Series  
O
r
f
54/74 devices and t and t 2.5 ns for Series 54S/74S devices.  
r
f
F. The outputs are measured one at a time with one input transition per measurement.  
Figure 2. Load Circuits and Voltage Waveforms  
11  
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
SN54LS240, SN54LS241, SN54LS244, SN54S240, SN54S241, SN54S244  
SN74LS240, SN74LS241, SN74LS244, SN74S240, SN74S241, SN74S244  
OCTAL BUFFERS AND LINE DRIVERS WITH 3-STATE OUTPUTS  
SDLS144B APRIL 1985 REVISED FEBRUARY 2002  
APPLICATION INFORMATION  
12  
POST OFFICE BOX 655303 DALLAS, TEXAS 75265  
PACKAGE OPTION ADDENDUM  
www.ti.com  
28-Feb-2005  
PACKAGING INFORMATION  
Orderable Device  
Status (1)  
Package Package  
Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)  
Qty  
Type  
CDIP  
CFP  
Drawing  
5962-7801201VRA  
5962-7801201VSA  
7705701RA  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
J
W
J
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
25  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
CDIP  
CFP  
7705701SA  
W
FK  
J
78012012A  
LCCC  
CDIP  
CFP  
7801201RA  
7801201SA  
W
FK  
J
JM38510/32401B2A  
JM38510/32401BRA  
JM38510/32401BSA  
JM38510/32402B2A  
JM38510/32402BRA  
JM38510/32402BSA  
JM38510/32403B2A  
JM38510/32403BRA  
JM38510/32403BSA  
JM38510/32403SRA  
JM38510/32403SSA  
SN54LS240J  
LCCC  
CDIP  
CFP  
W
FK  
J
LCCC  
CDIP  
CFP  
W
FK  
J
LCCC  
CDIP  
CFP  
W
J
CDIP  
CFP  
W
J
CDIP  
CDIP  
CDIP  
CDIP  
CDIP  
CDIP  
SOIC  
SN54LS241J  
J
SN54LS244J  
J
SN54S240J  
J
SN54S241J  
J
SN54S244J  
J
SN74LS240DW  
DW  
Pb-Free  
(RoHS)  
CU NIPDAU Level-2-250C-1 YEAR/  
Level-1-235C-UNLIM  
SN74LS240DWR  
ACTIVE  
SOIC  
DW  
20  
2000  
20  
Pb-Free  
(RoHS)  
CU NIPDAU Level-2-250C-1 YEAR/  
Level-1-235C-UNLIM  
SN74LS240J  
SN74LS240N  
OBSOLETE  
ACTIVE  
CDIP  
PDIP  
J
20  
20  
None  
Call TI  
Call TI  
N
Pb-Free  
(RoHS)  
CU NIPDAU Level-NC-NC-NC  
SN74LS240N3  
OBSOLETE  
ACTIVE  
PDIP  
SO  
N
20  
20  
None  
Call TI  
Call TI  
SN74LS240NSR  
NS  
2000  
25  
Pb-Free  
(RoHS)  
CU NIPDAU Level-2-260C-1 YEAR/  
Level-1-235C-UNLIM  
SN74LS241DW  
ACTIVE  
ACTIVE  
SOIC  
SOIC  
DW  
DW  
20  
20  
Pb-Free  
(RoHS)  
CU NIPDAU Level-2-250C-1 YEAR/  
Level-1-235C-UNLIM  
SN74LS241DWR  
2000  
Pb-Free  
(RoHS)  
CU NIPDAU Level-2-250C-1 YEAR/  
Level-1-235C-UNLIM  
SN74LS241J  
SN74LS241N  
OBSOLETE  
ACTIVE  
CDIP  
PDIP  
J
20  
20  
None  
Call TI  
Call TI  
N
20  
Pb-Free  
(RoHS)  
CU NIPDAU Level-NC-NC-NC  
SN74LS241N3  
OBSOLETE  
ACTIVE  
PDIP  
SO  
N
20  
20  
None  
Call TI  
Call TI  
SN74LS241NSR  
NS  
2000  
Pb-Free  
(RoHS)  
CU NIPDAU Level-2-260C-1 YEAR/  
Level-1-235C-UNLIM  
Addendum-Page 1  
PACKAGE OPTION ADDENDUM  
www.ti.com  
28-Feb-2005  
Orderable Device  
SN74LS244DBR  
SN74LS244DW  
SN74LS244DWR  
Status (1)  
ACTIVE  
ACTIVE  
ACTIVE  
Package Package  
Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)  
Qty  
Type  
Drawing  
SSOP  
DB  
20  
20  
20  
2000  
Pb-Free  
(RoHS)  
CU NIPDAU Level-2-260C-1 YEAR/  
Level-1-235C-UNLIM  
SOIC  
SOIC  
DW  
DW  
25  
Pb-Free  
(RoHS)  
CU NIPDAU Level-2-250C-1 YEAR/  
Level-1-235C-UNLIM  
2000  
Pb-Free  
(RoHS)  
CU NIPDAU Level-2-250C-1 YEAR/  
Level-1-235C-UNLIM  
SN74LS244J  
SN74LS244N  
OBSOLETE  
ACTIVE  
CDIP  
PDIP  
J
20  
20  
None  
Call TI  
Call TI  
N
20  
Pb-Free  
(RoHS)  
CU NIPDAU Level-NC-NC-NC  
SN74LS244N3  
OBSOLETE  
ACTIVE  
PDIP  
SO  
N
20  
20  
None  
Call TI  
Call TI  
SN74LS244NSR  
NS  
2000  
25  
Pb-Free  
(RoHS)  
CU NIPDAU Level-2-260C-1 YEAR/  
Level-1-235C-UNLIM  
SN74S240DW  
SN74S240DWR  
SN74S240N  
ACTIVE  
ACTIVE  
ACTIVE  
SOIC  
SOIC  
PDIP  
DW  
DW  
N
20  
20  
20  
Pb-Free  
(RoHS)  
CU NIPDAU Level-2-250C-1 YEAR/  
Level-1-235C-UNLIM  
2000  
20  
Pb-Free  
(RoHS)  
CU NIPDAU Level-2-250C-1 YEAR/  
Level-1-235C-UNLIM  
Pb-Free  
(RoHS)  
CU NIPDAU Level-NC-NC-NC  
SN74S240N3  
SN74S241DW  
OBSOLETE  
ACTIVE  
PDIP  
SOIC  
N
20  
20  
None  
Call TI  
Call TI  
DW  
25  
Pb-Free  
(RoHS)  
CU NIPDAU Level-2-250C-1 YEAR/  
Level-1-235C-UNLIM  
SN74S241DWR  
ACTIVE  
SOIC  
DW  
20  
2000  
Pb-Free  
(RoHS)  
CU NIPDAU Level-2-250C-1 YEAR/  
Level-1-235C-UNLIM  
SN74S241J  
SN74S241N  
OBSOLETE  
ACTIVE  
CDIP  
PDIP  
J
20  
20  
None  
Call TI  
Call TI  
N
20  
Pb-Free  
(RoHS)  
CU NIPDAU Level-NC-NC-NC  
SN74S241N3  
SN74S244DW  
OBSOLETE  
ACTIVE  
PDIP  
SOIC  
N
20  
20  
None  
Call TI  
Call TI  
DW  
25  
Pb-Free  
(RoHS)  
CU NIPDAU Level-2-250C-1 YEAR/  
Level-1-235C-UNLIM  
SN74S244DWR  
ACTIVE  
SOIC  
DW  
20  
2000  
Pb-Free  
(RoHS)  
CU NIPDAU Level-2-250C-1 YEAR/  
Level-1-235C-UNLIM  
SN74S244J  
SN74S244N  
OBSOLETE  
ACTIVE  
CDIP  
PDIP  
J
20  
20  
None  
Call TI  
Call TI  
N
20  
Pb-Free  
(RoHS)  
CU NIPDAU Level-NC-NC-NC  
SN74S244N3  
SNJ54LS240FK  
SNJ54LS240J  
SNJ54LS240W  
SNJ54LS241FK  
SNJ54LS241J  
SNJ54LS241W  
SNJ54LS244FK  
SNJ54LS244J  
SNJ54LS244W  
SNJ54S240FK  
SNJ54S240J  
OBSOLETE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
PDIP  
LCCC  
CDIP  
CFP  
N
FK  
J
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
20  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
None  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
1
1
1
1
1
1
1
1
1
1
1
1
1
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
W
FK  
J
LCCC  
CDIP  
CFP  
W
FK  
J
LCCC  
CDIP  
CFP  
W
FK  
J
LCCC  
CDIP  
CFP  
SNJ54S240W  
SNJ54S241FK  
W
FK  
LCCC  
Addendum-Page 2  
PACKAGE OPTION ADDENDUM  
www.ti.com  
28-Feb-2005  
Orderable Device  
Status (1)  
Package Package  
Pins Package Eco Plan (2) Lead/Ball Finish MSL Peak Temp (3)  
Qty  
Type  
CDIP  
CFP  
Drawing  
SNJ54S241J  
SNJ54S241W  
SNJ54S244FK  
SNJ54S244J  
SNJ54S244W  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
ACTIVE  
J
W
FK  
J
20  
20  
20  
20  
20  
1
1
1
1
1
None  
None  
None  
None  
None  
Call TI  
Call TI  
Call TI  
Call TI  
Call TI  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
Level-NC-NC-NC  
LCCC  
CDIP  
CFP  
W
(1) The marketing status values are defined as follows:  
ACTIVE: Product device recommended for new designs.  
LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.  
NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in  
a new design.  
PREVIEW: Device has been announced but is not in production. Samples may or may not be available.  
OBSOLETE: TI has discontinued the production of the device.  
(2)  
Eco Plan - May not be currently available - please check http://www.ti.com/productcontent for the latest availability information and additional  
product content details.  
None: Not yet available Lead (Pb-Free).  
Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements  
for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered  
at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.  
Green (RoHS & no Sb/Br): TI defines "Green" to mean "Pb-Free" and in addition, uses package materials that do not contain halogens,  
including bromine (Br) or antimony (Sb) above 0.1% of total product weight.  
(3)  
MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDECindustry standard classifications, and peak solder  
temperature.  
Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is  
provided. TI bases its knowledge and belief on information provided by third parties, and makes no representation or warranty as to the  
accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and continues to take  
reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on  
incoming materials and chemicals. TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited  
information may not be available for release.  
In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI  
to Customer on an annual basis.  
Addendum-Page 3  
IMPORTANT NOTICE  
Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications,  
enhancements, improvements, and other changes to its products and services at any time and to discontinue  
any product or service without notice. Customers should obtain the latest relevant information before placing  
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and conditions of sale supplied at the time of order acknowledgment.  
TI warrants performance of its hardware products to the specifications applicable at the time of sale in  
accordance with TI’s standard warranty. Testing and other quality control techniques are used to the extent TI  
deems necessary to support this warranty. Except where mandated by government requirements, testing of all  
parameters of each product is not necessarily performed.  
TI assumes no liability for applications assistance or customer product design. Customers are responsible for  
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TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right,  
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Applications  
Audio  
Amplifiers  
amplifier.ti.com  
www.ti.com/audio  
Data Converters  
dataconverter.ti.com  
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www.ti.com/automotive  
DSP  
dsp.ti.com  
Broadband  
Digital Control  
Military  
www.ti.com/broadband  
www.ti.com/digitalcontrol  
www.ti.com/military  
Interface  
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配单直通车
7801201SA产品参数
型号:7801201SA
生命周期:Obsolete
IHS 制造商:SIGNETICS CORP
包装说明:DFP,
Reach Compliance Code:unknown
HTS代码:8542.39.00.01
风险等级:5.77
系列:LS
JESD-30 代码:R-GDFP-F20
逻辑集成电路类型:BUS DRIVER
位数:4
功能数量:2
端口数量:2
端子数量:20
最高工作温度:125 °C
最低工作温度:-55 °C
输出特性:3-STATE
输出极性:INVERTED
封装主体材料:CERAMIC, GLASS-SEALED
封装代码:DFP
封装形状:RECTANGULAR
封装形式:FLATPACK
传播延迟(tpd):35 ns
筛选级别:MIL-STD-883
最大供电电压 (Vsup):5.5 V
最小供电电压 (Vsup):4.5 V
标称供电电压 (Vsup):5 V
表面贴装:YES
技术:TTL
温度等级:MILITARY
端子形式:FLAT
端子位置:DUAL
Base Number Matches:1
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