SN75ALS1178是TI公司的一款无产品，SN75ALS1178是双路差动驱动器和接收器，本页介绍了SN75ALS1178的产品说明、应用、特性等，并给出了与SN75ALS1178相关的TI元器件型号供参考。
SN75ALS1178 - 双路差动驱动器和接收器 - 无 - RS-485收发器 - TI公司（Texas Instruments，德州仪器）
The SN75ALS1177 and SN75ALS1178 dual differential drivers and receivers are integrated circuits designed for bidirectional data communication on multipoint bus transmission lines. They are designed for balanced transmission lines and meet standards TIA/EIA-422-B and TIA/EIA-485-A.
The SN75ALS1177 combines dual 3-state differential line drivers and dual 3-state differential input line receivers, both of which operate from a single 5-V power supply. The drivers and receivers have active-high and active-low enables, respectively, which can be externally connected together to function as direction control. The SN75ALS1178 drivers each have an individual active-high enable. Fail-safe design ensures that when the receiver inputs are open, the receiver outputs are always high.
The SN75ALS1177 and SN75ALS1178 are characterized for operation from 0°C to 70°C.
- Meet or Exceed Standards TIA/EIA-422-B and TIA/EIA-485-A
- Designed for Multipoint Bus Transmission on Long Bus Lines in Noisy Environments
- Low Supply-Current Requirement 50 mA Max
- Driver Positive- and Negative-Current Limiting
- Driver Common-Mode Output Voltage Range of -7 V to 12 V
- Thermal Shutdown Protection
- Driver 3-State Outputs Active-High Enable
- Receiver Common-Mode Input Voltage Range of -12 V to 12 V
- Receiver Input Sensitivity...±200 mV
- Receiver Hysteresis...50 mV Typ
- Receiver High Input Impedance...12k Min
- Receiver 3-State Outputs Active-Low Enable for SN75ALS1177 Only
- Operate From Single 5-V Supply
