Features: Designed for High-Speed Multipoint DataTransmission Over Long CablesOperate With Pulse Widths as Lowas 30 nsLow Supply Current . . . 5 mA MaxMeets or Exceeds the StandardRequirements of ANSI RS-485 andISO 8482:1987(E)Common-Mode Voltage Range of 7 Vto 12 VPositive- and Negative-Output Cu...
SN65LBC179Q: Features: Designed for High-Speed Multipoint DataTransmission Over Long CablesOperate With Pulse Widths as Lowas 30 nsLow Supply Current . . . 5 mA MaxMeets or Exceeds the StandardRequirements of AN...
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The SN65LBC179, SN65LBC179Q, andSN75LBC179 differential driver and receiver pairsare monolithic integrated circuits designed forbidirectional data communication over longcables that take on the characteristics oftransmission lines. SN65LBC179, SN65LBC179Q, andSN75LBC179 are balanced, ordifferential, voltage mode devices that meet orexceed the requirements of industry standardsANSI RS-485 and ISO 8482:1987(E). Bothdevices are designed using TI's proprietaryLinBiCMOSE with the low power consumption ofCMOS and the precision and robustness ofbipolar transistors in the same circuit.
The SN65LBC179, SN65LBC179Q, andSN75LBC179 combine a differential line driverand differential line receiver and operate from asingle 5-V supply. The driver differential outputsand the receiver differential inputs are connectedto separate terminals for full-duplex operation andare designed to present minimum loading to thebus when powered off (VCC = 0). These partsfeature a wide common-mode voltage rangemaking SN65LBC179, SN65LBC179Q, andSN75LBC179 suitable for point-to-point or multipoint data bus applications. The devices alsoprovide positive- and negative-current limitingand thermal shutdown for protection from line faultconditions. The line driver shuts down at a junctiontemperature of approximately 172.
The SN65LBC179, SN65LBC179Q, and SN75LBC179 are available in the 8-pin dual-in-line and small-outlinepackages. The SN75LBC179 is characterized for operation over the commercial temperature range of 0 to70. The SN65LBC179 is characterized over the industrial temperature range of 40 to 85. TheSN65LBC179Q is characterized over the extended industrial or automotive temperature range of 40 to125.