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54ACT299FM-MLS View Datasheet(PDF) - National ->Texas Instruments

Part NameDescriptionManufacturer
54ACT299FM-MLS 8-Input Universal Shift/Storage Register with Common aParallel I/O Pins National-Semiconductor
National ->Texas Instruments National-Semiconductor
54ACT299FM-MLS Datasheet PDF : 10 Pages
1 2 3 4 5 6 7 8 9 10
September 1998
54AC299 54ACT299
8-Input Universal Shift/Storage Register with Common
Parallel I/O Pins
General Description
The ’AC/’ACT299 is an 8-bit universal shift/storage register
with TRI-STATE® outputs. Four modes of operation are pos-
sible: hold (store), shift left, shift right and load data. The par-
allel load inputs and flip-flop outputs are multiplexed to re-
duce the total number of package pins. Additional outputs
are provided for flip-flops Q0, Q7 to allow easy serial cascad-
ing. A separate active LOW Master Reset is used to reset the
register.
Features
n ICC and IOZ reduced by 50%
n Common parallel I/O for reduced pin count
n Additional serial inputs and outputs for expansion
n Four operating modes: shift left, shift right, load and
store
n TRI-STATE outputs for bus-oriented applications
n Outputs source/sink 24 mA
n ’ACT299 has TTL-compatible inputs
n Standard Microcircuit Drawing (SMD)
’AC299: 5962-88754
’ACT299: 5962-88771
Ordering Code:
Logic Symbols
Connection Diagrams
Pin Assignment
for DIP and Flatpak
IEEE/IEC
DS100252-1
DS100252-2
Pin Assignment for LCC
DS100252-4
TRI-STATE® is a registered trademark of National Semiconductor Corporation.
FACT® is a registered trademark of Fairchild Semiconductor Corporation.
© 1998 National Semiconductor Corporation DS100252
DS100252-3
www.national.com
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