TL/F/9497
54F/74F193
Up/Down
Binary
Counter
with
Separate
Up/Down
Clocks
November 1994
54F/74F193 Up/Down Binary Counter
with Separate Up/Down Clocks
General Description
The ’F193 is an up/down modulo-16 binary counter. Sepa-
rate Count Up and Count Down Clocks are used, and in
either counting mode the circuits operate synchronously.
The outputs change state synchronously with the LOW-to-
HIGH transitions on the clock inputs. Separate Terminal
Count Up and Terminal Count Down outputs are provided
that are used as the clocks for subsequent stages without
extra logic, thus simplifying multi-stage counter designs.
Individual preset inputs allow the circuit to be used as a
programmable counter. Both the Parallel Load (PL) and the
Master Reset (MR) inputs asynchronously override the
clocks.
Features
Y
Guaranteed 4000V minimum ESD protection
Commercial Military
Package
Package Description
Number
74F193PC N16E 16-Lead (0.300 Wide) Molded Dual-In-Line
54F193DM (Note 2) J16A 16-Lead Ceramic Dual-In-Line
74F193SC (Note 1) M16A 16-Lead (0.150 Wide) Molded Small Outline, JEDEC
74F193SJ (Note 1) M16D 16-Lead (0.300 Wide) Molded Small Outline, EIAJ
54F193FM (Note 2) W16A 16-Lead Cerpack
54F193LM (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 Connection Diagrams
TL/F/9497–1
IEEE/IEC
TL/F/9497–4
Pin Assignment
for DIP, SOIC and Flatpak
TL/F/9497–2
Pin Assignment
for LCC
TL/F/9497–3
TRI-STATE is a registered trademark of National Semiconductor Corporation.
C
1995 National Semiconductor Corporation RRD-B30M75/Printed in U. S. A.