Catalog(2 parts)
| Part | Duplex | Voltage - Supply▲▼ | Voltage - Supply▲▼ | Protocol | Number of Drivers/Receivers▲▼ | Number of Drivers/Receivers▲▼ | Mounting Type | Operating Temperature▲▼ | Operating Temperature▲▼ | Receiver Hysteresis▲▼ | Supplier Device Package | Type | Package / Case▲▼ | Package / Case |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Full | 4.75 V | 5.25 V | RS422, RS485 | 2 ul | 2 ul | Through Hole | 70 °C | 0 °C | 0.05000000074505806 V | 16-PDIP | Transceiver | 0.007619999814778566 m, 0.007619999814778566 m | 16-DIP | |
Full | 4.75 V | 5.25 V | RS422, RS485 | 2 ul | 2 ul | Surface Mount | 70 °C | 0 °C | 0.05000000074505806 V | 16-SO | Transceiver | 16-SOIC (0.209", 5.30mm Width) |
Key Features
• Meet or exceed standards TIA/EIA-422-B and TIA/EIA-485-ADesigned for multipoint bus transmission on long bus lines in noisy environmentsLow supply-current requirement 50mA maximumDriver positive-and negative-current limitingDriver common-mode output voltage range of –7V to 12VThermal shutdown protection driver 3-state outputs active-high enableReceiver common-mode input voltage range of –12V to 12VReceiver input sensitivity: ±200mVReceiver hysteresis: 50mV typicalReceiver high input impedance: 12kΩ minimumReceiver 3-state outputs active-low enable for SN75ALS1177 onlyOperate from single 5V supplyMeet or exceed standards TIA/EIA-422-B and TIA/EIA-485-ADesigned for multipoint bus transmission on long bus lines in noisy environmentsLow supply-current requirement 50mA maximumDriver positive-and negative-current limitingDriver common-mode output voltage range of –7V to 12VThermal shutdown protection driver 3-state outputs active-high enableReceiver common-mode input voltage range of –12V to 12VReceiver input sensitivity: ±200mVReceiver hysteresis: 50mV typicalReceiver high input impedance: 12kΩ minimumReceiver 3-state outputs active-low enable for SN75ALS1177 onlyOperate from single 5V supply
Description
AI
The SN75ALS1177 and SN75ALS1178 dual differential drivers and receivers are integrated circuits designed for bidirectional data communication on multipoint bus transmission lines. The devices 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 5V 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.
The SN75ALS1177 and SN75ALS1178 dual differential drivers and receivers are integrated circuits designed for bidirectional data communication on multipoint bus transmission lines. The devices 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 5V 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.