DS89C21 Series

Differential CMOS Line Driver and Receiver Pair

Catalog

Differential CMOS Line Driver and Receiver Pair

Part	Type	Duplex	Operating Temperature [Max]	Operating Temperature [Min]	Supplier Device Package	Data Rate	Receiver Hysteresis	Voltage - Supply [Min]	Voltage - Supply [Max]	Protocol	Package / Case	Package / Case [y]	Package / Case [x]	Mounting Type
Texas Instruments DS89C21TM/NOPB	Transceiver	Full	85 °C	-40 °C	8-SOIC	20 Mbps	50 mV	4.5 V	5.5 V	RS422 RS485	8-SOIC	3.9 mm	0.154 in	Surface Mount
Texas Instruments DS89C21TM	Transceiver	Full	85 °C	-40 °C	8-SOIC	20 Mbps	50 mV	4.5 V	5.5 V	RS422 RS485	8-SOIC	3.9 mm	0.154 in	Surface Mount
Texas Instruments DS89C21TMX/NOPB	Transceiver	Full	85 °C	-40 °C	8-SOIC	20 Mbps	50 mV	4.5 V	5.5 V	RS422 RS485	8-SOIC	3.9 mm	0.154 in	Surface Mount

Catalog

Differential CMOS Line Driver and Receiver Pair

Key Features

• Meets TIA/EIA-422-A (RS-422) and CCITT V.11 RecommendationLOW POWER Design—15 mW TypicalGuaranteed AC Parameters:Maximum Driver Skew 2.0 nsMaximum Receiver Skew 4.0 nsExtended Temperature Range: −40°C to +85°CAvailable in SOIC PackagingOperates over 20 MbpsReceiver OPEN Input Failsafe FeatureAll trademarks are the property of their respective owners.Meets TIA/EIA-422-A (RS-422) and CCITT V.11 RecommendationLOW POWER Design—15 mW TypicalGuaranteed AC Parameters:Maximum Driver Skew 2.0 nsMaximum Receiver Skew 4.0 nsExtended Temperature Range: −40°C to +85°CAvailable in SOIC PackagingOperates over 20 MbpsReceiver OPEN Input Failsafe FeatureAll trademarks are the property of their respective owners.

Description

The DS89C21 is a differential CMOS line driver and receiver pair, designed to meet the requirements of TIA/EIA-422-A (RS-422) electrical characteristics interface standard. The DS89C21 provides one driver and one receiver in a minimum footprint. The device is offered in an 8-pin SOIC package. The CMOS design minimizes the supply current to 6 mA, making the device ideal for use in battery powered or power conscious applications. The driver features a fast transition time specified at 2.2 ns, and a maximum differential skew of 2 ns making the driver ideal for use in high speed applications operating above 10 MHz. The receiver can detect signals as low as 200 mV, and also incorporates hysteresis for noise rejection. Skew is specified at 4 ns maximum. The DS89C21 is compatible with TTL and CMOS levels (DI and RO). The DS89C21 is a differential CMOS line driver and receiver pair, designed to meet the requirements of TIA/EIA-422-A (RS-422) electrical characteristics interface standard. The DS89C21 provides one driver and one receiver in a minimum footprint. The device is offered in an 8-pin SOIC package. The CMOS design minimizes the supply current to 6 mA, making the device ideal for use in battery powered or power conscious applications. The driver features a fast transition time specified at 2.2 ns, and a maximum differential skew of 2 ns making the driver ideal for use in high speed applications operating above 10 MHz. The receiver can detect signals as low as 200 mV, and also incorporates hysteresis for noise rejection. Skew is specified at 4 ns maximum. The DS89C21 is compatible with TTL and CMOS levels (DI and RO).