OCTAL BUFFER/LINE DRIVER
WITH 3-STATE OUTPUTS
The SN54 / 74LS240, 241 and 244 are Octal Buffers and Line Drivers
designed to be employed as memory address drivers, clock drivers and
bus-oriented transmitters/receivers which provide improved PC board
density.
SN54/74LS240
SN54/74LS241
SN54/74LS244
OCTAL BUFFER/ LINE DRIVER
WITH 3-STATE OUTPUTS
LOW POWER SCHOTTKY
•
Hysteresis at Inputs to Improve Noise Margins
•
3-State Outputs Drive Bus Lines or Buffer Memory Address Registers
•
Input Clamp Diodes Limit High-Speed Termination Effects
LOGIC AND CONNECTION DIAGRAMS DIP
(TOP VIEW)
SN54 / 74LS240
VCC 2G
20
19
1Y1
18
2A4 1Y2
17
16
2A3
15
1Y3 2A2 1Y4
14
13
12
2A1
11
20
1
J SUFFIX
CERAMIC
CASE 732-03
20
N SUFFIX
PLASTIC
CASE 738-03
1
1
1G
2
1A1
3
4
5
6
1A3
7
8
9
10
GND
2Y4 1A2 2Y3
2Y2 1A4 2Y1
SN54 / 74LS241
VCC 2G
20
19
1Y1
18
2A4 1Y2
17
16
2A3
15
1Y3 2A2 1Y4
14
13
12
2A1
11
20
1
DW SUFFIX
SOIC
CASE 751D-03
ORDERING INFORMATION
SN54LSXXXJ
Ceramic
SN74LSXXXN Plastic
SN74LSXXXDW SOIC
1
1G
2
1A1
3
4
5
6
1A3
7
8
9
10
GND
2Y4 1A2 2Y3
2Y2 1A4 2Y1
SN54 / 74LS244
VCC 2G
20
19
1Y1
18
2A4 1Y2
17
16
2A3
15
1Y3 2A2 1Y4
14
13
12
2A1
11
1
1G
2
1A1
3
4
5
6
1A3
7
8
9
10
GND
2Y4 1A2 2Y3
2Y2 1A4 2Y1
FAST AND LS TTL DATA
5-387
MOTOROLA [ MOTOROLA, INC ]
