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54ACT899QCX 데이터시트(PDF) 1 Page - National Semiconductor (TI) |
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54ACT899QCX 데이터시트(HTML) 1 Page - National Semiconductor (TI) |
1 / 14 page TLF10637 August 1994 74AC899 54ACT74ACT899 9-Bit Latchable Transceiver with Parity GeneratorChecker General Description The ’AC’ACT899 is a 9-bit to 9-bit parity transceiver with transparent latches The device can operate as a feed- through transceiver or it can generatecheck parity from the 8-bit data busses in either direction The ’AC’ACT899 fea- tures independent latch enables for the A-to-B direction and the B-to-A direction a select pin for ODDEVEN parity and separate error signal output pins for checking parity Features Y Latchable transceiver with output sink of 24 mA Y Option to select generate parity and check or ‘‘feed- through’’ dataparity in directions A-to-B or B-to-A Y Independent latch enable for A-to-B and B-to-A direc- tions Y Select pin for ODDEVEN parity Y ERRA and ERRB output pins for parity checking Y Ability to simultaneously generate and check parity Y May be used in system applications in place of the ’280 Y May be used in system applications in place of the ’657 and ’373 (no need to change TR to check parity) Y 4 kV minimum ESD immunity Logic Symbol TLF10637 – 1 Connection Diagram Pin Assignment for PCC and LCC TLF10637 – 2 TRI-STATE is a registered trademark of National Semiconductor Corporation FACTTM is a trademark of National Semiconductor Corporation C1995 National Semiconductor Corporation RRD-B30M75Printed in U S A |
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