HD74LS244
Electrical Characteristics
(Ta = –20 to +75 °C)
Item
Input voltage
Hysteresis
Symbol
V
IH
V
IL
V
T+
– V
T–
V
OH
Output voltage
V
OL
Off-state output current
I
OZH
I
OZL
I
IH
I
IL
I
I
Short-circuit output
current
Outputs
"H"
Supply
current**
Outputs
"L"
I
CC
I
OS
min.
2.0
—
0.2
2.4
2.0
—
—
—
—
—
—
—
–40
—
—
typ.*
—
—
0.4
—
—
—
—
—
—
—
—
—
—
13
27
max.
—
0.8
—
—
—
0.4
0.5
20
–20
20
–0.2
0.1
–225
23
46
54
–1.5
V
V
CC
= 4.75 V, I
IN
= –18 mA
mA
V
CC
= 5.25 V
Unit
V
V
V
V
V
µA
µA
mA
mA
mA
Condition
V
CC
= 4.75 V
V
IL
= 0.8 V, I
OH
= – 3 mA
V
CC
= 4.75 V,
V
IH
= 2 V
V
IL
= 0.5 V, I
OH
= – 15 mA
I
OL
= 12 mA
V
CC
= 4.75 V, V
IH
= 2 V,
V
IL
= 0.8 V
I
OL
= 24 mA
V
O
= 2.7 V
V
CC
= 5.25 V, V
IH
= 2 V,
V
IL
= 0.8 V
V
O
= 0.4 V
V
CC
= 5.25 V, V
I
= 2.7 V
V
CC
= 5.25 V, V
I
= 0.4 V
V
CC
= 5.25 V, V
I
= 7 V
V
CC
= 5.25 V
Input current
All outputs
—
32
disabled
Input clamp voltage
V
IK
—
—
Notes: * V
CC
= 5 V, Ta = 25°C
** I
CC
is measured with all outputs open.
Switching Characteristics
(V
CC
= 5 V, Ta = 25°C)
Item
Propagation delay time
Output enable time
Output disable time
Symbol
t
PLH
t
PHL
t
ZL
t
ZH
t
LZ
t
HZ
min.
—
—
—
—
—
—
typ.
12
12
20
15
15
10
max.
18
18
30
23
25
18
Unit
ns
ns
ns
ns
ns
C
L
= 45 pF, R
L
= 667
Ω
Condition
C
L
= 5 pF, R
L
= 667
Ω
Note: Refer to Test Circuit and Waveform of the Common Item "TTL Common Matter (Document No.: REJ27D0005-
0100)".
Rev.2.00, Feb.18.2005, page 3 of 5
RENESAS [ RENESAS TECHNOLOGY CORP ]
