SN75LBC968 Datasheet | Texas Instruments

description The SN75LBC968 is a nine-channel transceiver 4DE/RE 11 VCC1 12 GND 13 GND 14 GND 15 GND 16 GND 17 VCC 18 5A 19 5DE/RE 20 6A 21 6DE/RE 22 7A 23 7DE/RE 24 8A 25 8DE/RE 26 9A 27 9DE/RE 28 46 5B 45 VCC 44 GND 43 GND 42 GND 41 GND 40 GND 39 VCC 38 NC 37 4B 36 NC 35 3B 34 NC 33 2B 32 NC 31 1B 30 NC 29 9B with active termination that drives and receives the signals from the single-ended, parallel data - No internal connection buses such as the Small puter-Systems Interface (SCSI) bus. The features of the line drivers, receivers, and active-termination circuits provide the optimum signal-to-noise ratios for reliable data transmission. Integration of the termination and transceivers in the Lin Bi CMOS process provides the necessary analog-circuit performance, has low quiescent power, and reduces the capacitance presented to the bus over separate termination and I/O circuits. The transceivers of the SN75LBC968 can be enabled to function as totem-pole or open-drain outputs. The open-drain mode drives the wired-OR lines of SCSI (BSY, SEL, and RST) by inputting the data to the direction control input DE/RE instead of the A input. When driving the data through the A input, the outputs bee totem poles and provide active signal negation for a higher voltage level on low-to-high signal transitions on heavily loaded buses. In either mode, the turnon and turnoff output transition times are limited to minimize crosstalk through capacitive coupling to adjacent lines and RF emissions from the cable. The receivers are also designed for optimum analog performance by precisely controlling the input-voltage thresholds, providing wide input-voltage hysteresis and including an input-noise filter. These features significantly increase the likelihood of detecting only the desired data signal and rejecting noise. Please be aware that an important notice concerning availability, standard warranty, and use in critical...