74ABT899

74ABT899 9-Bit Latchable Transceiver with Parity Generator/Checker November 1992 Revised January 1999 74ABT899 9-Bit Latchable Transceiver with Parity Generator/Checker General Description The ABT899 is a 9-bit to 9-bit parity transceiver with transparent latches. The device can operate as a feed-through transceiver or it can generate/check parity from the 8-bit data busses in either direction. The ABT899 features independent latch enables for the Ato-B direction and the B-to-A direction, a select pin for ODD/EVEN parity, and separate error signal output pins for checking parity. Features s Latchable transceiver with output sink of 64 mA s Option to select generate parity and check or “feed-through” data/parity in directions A-to-B or B-to-A s Independent latch enables for A-to-B and B-to-A directions s Select pin for ODD/EVEN parity s ERRA and ERRB output pins for parity checking s Ability to simultaneously generate and check parity s May be used in systems applications in pla...