8-Channel Line Receiver
ą
• Meets or Exceeds the Requirements of
IBM System 360/370 Input/Output Specification
• Input Resistance . . . 7 kΩ to...
Description
ą
Meets or Exceeds the Requirements of
IBM System 360/370 Input/Output Specification
Input Resistance . . . 7 kΩ to 20 kΩ Output Compatible With TTL Schottky-Clamped Transistors Operates From a Single 5-V Supply High Speed . . . Low Propagation Delay Ratio Specification . . . tPLH /tPHL Common Strobe for Each Group of Four
Receivers
SN75128 . . . Active-High Strobes
SN75129 . . . Active-Low Strobes
SN75128, SN75129 EIGHTĆCHANNEL LINE RECEIVERS
ą
SLLS076B − JANUARY 1977 − REVISED MAY 1995
N PACKAGE (TOP VIEW)
1S/1S† 1A 2A 3A 4A 5A 6A 7A 8A
GND
1 2 3 4 5 6 7 8 9 10
20 VCC 19 1Y 18 2Y 17 3Y 16 4Y 15 5Y 14 6Y
13 7Y
12 8Y 11 2S/2S†
† S and S for SN75128 and SN75129, respectively
description
The SN75128 and SN75129 are eight-channel line receivers designed to satisfy the requirements of the input-output interface specification for IBM 360/370. Both devices feature common strobes for each group of four devices. The SN75128 has active-high strobes; the SN75129 has active-low strobes. Special low-power design and Schottky-diode-clamped transistors allow low supply-current requirements while maintaining fast switching speeds and high-current TTL outputs.
For new IBM 360/370 interface designs, see the SN751730.
The SN75128 and SN75129 are characterized for operation from 0°C to 70°C.
logic symbols†
SN75128
1 1S
11 2S
EN1 EN2
1 1S
11 2S
SN75129
EN1 EN2
2 1A
3 2A
4 3A
5 4A
6 5A
7 6A
8 7A
9 8A
19 1 1Y
18 2Y
17 3Y
16 4Y
15 2 5Y
14 6Y
13 7Y
12 8Y
2 1A
3 2A
4...
Similar Datasheet