- 制造厂商：TI
- 产品类别：接口
- 技术类目：RS-485 和 RS-422 收发器
- 功能描述：双路差分驱动器和接收器
- 点击这里打开及下载SN75ALS1177的技术文档资料
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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
- Number of receivers
- 2
- Number of transmitters
- 2
- Duplex
- Full
- Supply voltage (Nom) (V)
- 5
- Signaling rate (Max) (Mbps)
- 10
- IEC 61000-4-2 contact (+/- kV)
- None
- Fault protection (V)
- -10 to 15
- Common mode range
- -7 to 12
- Number of nodes
- 32
- Isolated
- No
- ICC (Max) (mA)
- 50
- Rating
- Catalog
- Operating temperature range (C)
- 0 to 70
SN75ALS1177的完整型号有：SN75ALS1177N、SN75ALS1177NSR，以下是这些产品的关键参数及官网采购报价：
SN75ALS1177N，工作温度：0 to 70，封装：PDIP (N)-16，包装数量MPQ：25个，MSL 等级/回流焊峰值温度：N/A for Pkg Type，引脚镀层/焊球材料：NIPDAU，TI官网SN75ALS1177N的批量USD价格：2.571（1000+）
SN75ALS1177NSR，工作温度：0 to 70，封装：SO (NS)-16，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-1-260C-UNLIM，引脚镀层/焊球材料：NIPDAU，TI官网SN75ALS1177NSR的批量USD价格：2.46（1000+）
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