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54ACTQ544 Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. 54ACTQ544
Description  Quiet Series Octal Registered Transceiver with TRI-STATE Outputs
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

54ACTQ544 Datasheet(HTML) 1 Page - National Semiconductor (TI)

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54ACTQ544
Quiet Series Octal Registered Transceiver with
TRI-STATE® Outputs
General Description
The ACTQ544 is an inverting octal transceiver containing
two sets of D-type registers for temporary storage of data
flowing in either direction. Separate Latch Enable and Out-
put Enable inputs are provided for each register to permit in-
dependent input and output control in either direction of data
flow. The ’544 inverts data in both directions.
The ACTQ utilizes NSC Quiet Series technology to guaran-
tee quiet output switching and improved dynamic threshold
performance. FACT Quiet Seriesfeatures GTOoutput
control and undershoot corrector in addition to a split ground
bus for superior performance.
Features
n Guaranteed simultaneous switching noise level and
dynamic threshold performance
n 8-bit inverting octal latched transceiver
n Separate controls for data flow in each direction
n Back-to-back registers for storage
n Outputs source/sink 24 mA
n 4 kV minimum ESD immunity
Logic Symbols
Pin Names
Description
OEAB
A-to-B Output Enable Input (Active LOW)
OEBA
B-to-A Output Enable Input (Active LOW)
CEAB
A-to-B Enable Input (Active LOW)
CEBA
B-to-A Enable Input (Active LOW)
LEAB
A-to-B Latch Enable Input (Active LOW)
LEBA
B-to-A Latch Enable Input (Active LOW)
A
0 –A7
A-to-B Data Inputs or
B-to-A TRI-STATE Outputs
B
0 –B7
B-to-A Data Inputs or
A-to-B TRI-STATE Outputs
GTOis a trademark of National Semiconductor Corporation.
TRI-STATE® is a registered trademark of National Semiconductor Corporation.
FACT® is a registered trademark of Fairchild Semiconductor Corporation.
FACT Quiet Seriesis a trademark of Fairchild Semiconductor Corporation.
DS100248-1
IEEE/IEC
DS100248-4
August 1998
© 1998 National Semiconductor Corporation
DS100248
www.national.com


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