SN75ALS176

差动总线收发器

The SN65ALS176 and series differential bus transceivers are designed for bidirectional data communication on multipoint bus transmission lines. They are designed for balanced transmission lines and meet A/EIA-422-B, TIA/EIA-485-A, and ITU Recommendations V.11 and X.27.

The SN65ALS176 and SN75ALS176 series combine a 3-state, differential line driver and a differential input line receiver, both of which operate from a single 5-V power supply. The driver and receiver have active-high and active-low enables, respectively, that can be connected together externally to function as a direction control. The driver differential outputs and the receiver differential inputs are connected internally to form a differential input/output I/O bus port that is designed to offer minimum loading to the bus when the driver is disabled or VCC = 0. This port features wide positive and negative common-mode voltage ranges, making the device suitable for party-line applications.

The SN65ALS176 is characterized for operation from -40°C to 85°C. The SN75ALS176 series is characterized for operation from 0°C to 70°C.

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Meet or Exceed the Requirements of TIA/EIA-422-B, TIA/EIA-485-A and ITU Recommendations V.11 and X.27

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Operate at Data Rates up to 35 Mbaud

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Four Skew Limits Available:

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SN65ALS176...15 ns

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SN75ALS176...10 ns

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SN75ALS176A...7.5 ns

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SN75ALS176B...5 ns

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Designed for Multipoint Transmission on Long Bus Lines in Noisy Environments

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Low Supply-Current Requirements

...30 mA Max

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Wide Positive and Negative Input/Output Bus-Voltage Ranges

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Thermal Shutdown Protection

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Driver Positive and Negative Current Limiting

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Receiver Input Hysteresis

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Glitch-Free Power-Up and Power-Down Protection

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Receiver Open-Circuit Fail-Safe Design