ST26C31/32A: CMOS Quad Differential Line Driver And Receiver

ST26C31 Line Receiver The ST26C31 is a quad differential line driver designed for digital data transmission over balanced lines. The device meets all the requirements of EIA standard RS-422 while retaining the low power characteristics of CMOS. The ST26C31 accepts TTL or CMOS input levels and translates these to RS-422 output levels. All outputs are protected against damage due to electrostatic discharge by diode to VCC and ground. ST26C31 Features TTL input compatible Typical propagation delay: 6ns Typical output skew: 0.5ns Output will not load line when VCC = 0V Meets the requirements of EIA standard RS-422 Operation from single 5V supply 3-state outputs for connection to system buses Low quiescent current Temperature range: -40° to 85°C Available in surface mount packages Segments & Applications Telecom and industrial Base stations and digital networks Benefits Low cost Industry standard fully compliant

ST26C32A Line Receiver

The ST26C32A is a quad differential line receiver designed to meet the RS-422, RS-423 standards for balanced and unbalanced digital data transmission, while retaining the low power characteristics of CMOS. The ST26C32A has an input sensitivity of 200mV over the common mode input voltage range of ±7V. The ST26C32A features internal pull-up and pull-down resistors which prevent output oscillation on unused channels. The device provides an enable and disable function to all four receivers, and features 3-STATE outputs with 6mA source and sink capability.

ST26C32A Features

	CMOS design for low power
	±0.2V sensitivity over input common mode voltage range
	Typical propagation delays: 19ns
	Typical input hysteresis: 60mV
	Input will not load line when VCC = 0V
	Meets the EIA standards: RS-422, RS-423
	3-state outputs for connection to system buses
	Temperature range: -40°C to 85°C
	Available in surface mount packages

Pin Configuration

Type	Package
ST26C31BN ST26C32ABN	DIP-16
ST26C31BD ST26C32ABD	SO-16
ST26C31BDR ST26C32ABDR	SO-16 (T&R)
ST26C31BTR ST26C32ABTR	TSSOP16 (T&R)

Cross Reference

ST	NATIONAL	TI	Mototrola
ST26C31	DS26C31T	AM26C31	MC26C31
ST26C32A	DS26C32A	AM26C32I	MC26C32