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74AC899 Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. 74AC899
Description  9-Bit Latchable Transceiver with Parity Generator/Checker
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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74AC899 Datasheet(HTML) 1 Page - National Semiconductor (TI)

 
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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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