The SN55LBC176, SN65LBC176, SN65LBC176Q, and SN75LBC176 differential bus transceivers are monolithic, integrated circuits designed for bidirectional data communication on multipoint bus-transmission lines. They are designed for balanced transmission lines and meet ANSI Standard TIA/EIA-485-A (RS-485) and ISO 8482:1987(E).
●The SN55LBC176, SN65LBC176, SN65LBC176Q, and SN75LBC176 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, which can externally connect together to function as a direction control. The driver differential outputs and the receiver differential inputs connect internally to form a differential input/output (I/O) bus port that is designed to offer minimum loading to the bus whenever 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. Very low device supply current can be achieved by disabling the driver and the receiver.
●These transceivers are suitable for ANSI Standard TIA/EIA-485 (RS-485) and ISO 8482 applications to the extent that they are specified in the operating conditions and characteristics section of this data sheet. Certain limits contained in TIA/EIA-485-A and ISO 8482:1987 (E) are not met or cannot be tested over the entire military temperature range.
●The SN55LBC176 is characterized for operation from 55°C to 125°C. The SN65LBC176 is characterized for operation from 40°C to 85°C, and the SN65LBC176Q is characterized for operation from 40°C to 125°C. The SN75LBC176 is characterized for operation from 0°C to 70°C.
● Bidirectional Transceiver
● Meets or Exceeds the Requirements of ANSI Standard TIA/EIA.485.A and
●ISO 8482:1987(E)
● High-Speed Low-Power LinBiCMOS™ Circuitry
● Designed for High-Speed Operation in Both Serial and Parallel Applications
● Low Skew
● Designed for Multipoint Transmission on Long Bus Lines in Noisy Environments
● Very Low Disabled Supply Current . . . 200 µA Maximum
● Wide Positive and Negative Input/Output Bus Voltage Ranges
● Thermal-Shutdown Protection
● Driver Positive-and Negative-Current Limiting
● Open-Circuit Failsafe Receiver Design
● Receiver Input Sensitivity . . . ±200 mV Max
● Receiver Input Hysteresis . . . 50 mV Typ
● Operates From a Single 5-V Supply
● Glitch-Free Power-Up and Power-Down Protection
● Available in Q-Temp Automotive HighRel Automotive ApplicationsConfiguration
●Control / Print Support Qualification to Automotive Standards
●LinBiCMOS and LinASIC are trademarks of Texas Instruments Incorporated.
