SN75128

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...