SN75LBC786

SN75LBC786 QUADRUPLE RS-423-B DRIVER/RECEIVER WITH LOOPBACK SLLS184 – NOVEMBER 1994 D Four Independent Drivers and Receivers D Loopback Mode Functionally Self Tests DW PACKAGE (TOP VIEW) Drivers and Receivers Without Disconnection From Line D Driver Slew Rate Controlled by a Single Resistor D Internal Thermal-Overload Protection 3A 1 3Z 2 3LB 3 4A 4 4Z 5 28 2LB 27 2Z 26 2A 25 1LB 24 1Z D RS-423-B Inputs and Outputs Designed to Withstand ± 25 V D ESD Protection Exceeds 2000 V Per MIL-STD-833C Method 3015 D LinBiCMOS™ Process Technology 4LB VSS GND 4B 4Y 3B 6 7 8 9 10 11 23 1A 22 RWS 21 VDD 20 1Y 19 1B 18 2Y description 3Y 12 3C 13 17 2B 16 2C The SN75LBC786 is a monolithic quadruple 4C 14 15 1C RS-423-B driver and receiver with integrated- loopback function. The operation of the SN75LBC786 is closely based on that of the SN75186. In normal operation, the device performs as four independent RS-423-B driver/receiver pairs designed to interface data-terminal equipment (DTE) with data circuit-terminating equipment (DCE). In loopback mode, the signal from each driver output is fed back via special circuitry into its associated receiver input, removing the need to locally disconnect cables and install a loopback connector. The receiver output signal is the same as the driver input signal. The SN75LBC786 is characterized for operation over the temperature range of 0°C to 70°C. FUNCTION TABLE LOOPBACK LB INPUTS A BC OUTPUTS ZY H L LH H H H H LH H L H ...