DS8921是TI公司的一款无产品，DS8921是差动线路驱动器和接收器对，本页介绍了DS8921的产品说明、应用、特性等，并给出了与DS8921相关的TI元器件型号供参考。
DS8921 - 差动线路驱动器和接收器对 - 无 - RS-422收发器 - TI公司（Texas Instruments，德州仪器）
- 12-ns Typical Propagation Delay
- Output Skew: 0.5 ns Typical
- Meets the Requirements of EIA Standard RS-422
- Complementary Driver Outputs
- High Differential or Common-Mode Input Voltage Ranges of ±7 V
- ±0.2 V Receiver Sensitivity Over the Input Voltage Range
- Receiver Input Hysteresis: 70 mV Typical
- DS8921AT Industrial Temperature Operation: (−40°C to +85°C)
- Differential Line Driver and Receiver for:
- ST506 Disk Drive Standard
- ST412 Disk Drive Standard
- ESDI Disk Drive Standard
- RS-422 Interface
The DS8921, DS8921A, and DS8921AT devices are differential line driver and receiver pairs designed specifically for applications meeting the ST506, ST412, and ESDI disk drive standards. In addition, these devices meet the requirements of the EIA standard RS-422.
The DS8921x receivers offer an input sensitivity of 200 mV over a ±7 V common mode operating range. Hysteresis is incorporated (typically 70 mV) to improve noise margin for slowly changing input waveforms.
The DS8921x drivers are designed to provide unipolar differential drive to twisted-pair or parallel wire transmission lines. Complementary outputs are logically ANDed and provide an output skew of 0.5 ns (typical) with propagation delays of 12ns.
The DS8921x devices are designed to be compatible with TTL and CMOS.
| PART NUMBER | PACKAGE | BODY SIZE (NOM) |
|---|---|---|
| DS8921 DS8921A DS8921AT | SOIC (8) | 4.90 mm x 3.91 mm |
| PDIP (8) | 9.81 mm x 6.35 mm |
