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).
● Meets TIA/EIA-422-A (RS-422) and CCITT V.11 Recommendation
● LOW POWER Design—15 mW Typical
● Guaranteed AC Parameters:
● Maximum Driver Skew 2.0 ns
● Maximum Receiver Skew 4.0 ns
● Extended Temperature Range: −40°C to +85°C
● Available in SOIC Packaging
● Operates over 20 Mbps
● Receiver OPEN Input Failsafe Feature
●All trademarks are the property of their respective owners.
