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54F191 Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. 54F191
Description  Up/Down Binary Counter with Preset and Ripple Clock
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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54F191 Datasheet(HTML) 1 Page - National Semiconductor (TI)

 
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TLF9495
November 1994
54F74F191
UpDown Binary Counter with Preset and Ripple Clock
General Description
The ’F191 is a reversible modulo-16 binary counter featur-
ing synchronous counting and asynchronous presetting
The preset feature allows the ’F191 to be used in program-
mable dividers The Count Enable input the Terminal Count
output and Ripple Clock output make possible a variety of
methods of implementing multistage counters In the count-
ing modes state changes are initiated by the rising edge of
the clock
Features
Y
High-Speed125 MHz typical count frequency
Y
Synchronous counting
Y
Asynchronous parallel load
Y
Cascadable
Commercial
Military
Package
Package Description
Number
74F191PC
N16E
16-Lead (0300 Wide) Molded Dual-In-Line
54F191DM (Note 2)
J16A
16-Lead Ceramic Dual-In-Line
74F191SC (Note 1)
M16A
16-Lead (0150 Wide) Molded Small Outline JEDEC
74F191SJ (Note 1)
M16D
16-Lead (0300 Wide) Molded Small Outline EIAJ
54F191FM (Note 2)
W16A
16-Lead Cerpack
54F191LM (Note 2)
E20A
20-Lead Ceramic Leadless Chip Carrier Type C
Note 1
Devices also available in 13
reel Use suffix e SCX and SJX
Note 2
Military grade device with environmental and burn-in processing Use suffix e DMQB FMQB and LMQB
Logic Symbols
TLF9495 – 1
IEEEIEC
TLF9495 – 4
Connection Diagrams
Pin Assignment for
DIP SOIC and Flatpak
TLF9495 – 2
Pin Assignment
for LCC
TLF9495 – 3
TRI-STATE
is a registered trademark of National Semiconductor Corporation
C1995 National Semiconductor Corporation
RRD-B30M75Printed in U S A


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