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54F190 fiches techniques PDF

National Semiconductor - Up/Down Decade Counter

Numéro de référence 54F190
Description Up/Down Decade Counter
Fabricant National Semiconductor 
Logo National Semiconductor 





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54F190 fiche technique
www.DataSheet4U.com
November 1994
54F 74F190
Up Down Decade Counter with Preset and Ripple Clock
General Description
The ’F190 is a reversible BCD (8421) decade counter fea-
turing synchronous counting and asynchronous presetting
The preset feature allows the ’F190 to be used in program-
mable dividers The Count Enable input the Terminal Count
output and the Ripple Clock output make possible a variety
of methods of implementing multistage counters In the
counting modes state changes are initiated by the rising
edge of the clock
Features
Y High-speed 125 MHz typical count frequency
Y Synchronous counting
Y Asynchronous parallel load
Y Cascadable
Commercial
74F190PC
74F190SC (Note 1)
Military
54F190DM (Note 2)
54F190FM (Note 2)
54F190LM (Note 2)
Package
Number
N16E
J16A
M16A
W16A
E20A
Package Description
16-Lead (0 300 Wide) Molded Dual-In-Line
16-Lead Ceramic Dual-In-Line
16-Lead (0 150 Wide) Molded Small Outline JEDEC
16-Lead Cerpack
20-Lead Ceramic Leadless Chip Carrier Type C
Note 1 Devices also available in 13 reel Use suffix e SCX
Note 2 Military grade device with environmental and burn-in processing Use suffix e DMQB FMQB and LMQB
Logic Symbols
Connection Diagrams
Pin Assignment for
DIP SOIC and Flatpak
Pin Assignment
for LCC
IEEE IEC
TL F 9494–1
TL F 9494 – 2
TL F 9494 – 3
TL F 9494–4
TRI-STATE is a registered trademark of National Semiconductor Corporation
C1995 National Semiconductor Corporation TL F 9494
RRD-B30M75 Printed in U S A

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