Meets or Exceeds the Requirements of
IBME System 360 Input/Output Interface
Specification
Operates From Single 5-V Supply
TTL Compatible
Built-In Input Threshold Hysteresis
High Speed . . . Typical Propagation Delay
Time = 20 ns
Independent Channel Strobes
Input Gating Increases Application
Flexibility
Designed for Use With Dual Line Driver
SN75123
Designed to Be Interchangeable With
Signetics N8T24

description
The SN75124 triple line receiver is specifically designed to meet the input/output interface specifications for IBM
System 360. It is also compatible with standard TTL logic and supply voltage levels.
The SN75124 has receiver inputs with built-in hysteresis to provide increased noise margin for single-ended
systems. An open line affects the receiver input as does a low-level input voltage, and the receiver input can
withstand a level of –0.15 V with power on or off. The other inputs are in TTL configuration. The S input must
be high to enable the receiver input. Two of the line receivers have A and B inputs that, if both are high, hold
the output low. The third receiver has only an A input that, if high, holds the output low.
See the SN751730 for new IBM 360/370 interface designs.
The SN75124 is characterized for operation from 0°C to 70°C.