© 2000 Fairchild Semiconductor Corporation

DS009497

www.fairchildsemi.com

April 1988

Revised September 2000

74F193

Up/Down Binary Counter with Separate Up/Down Clocks

General Description

The 74F193 is an up/down modulo-16 binary counter. Sep-

arate 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.

Ordering Code:

Devices also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.

Note 1: Device not available in Tape and Reel.

Logic Symbols

IEEE/IEC

Connection Diagram

Order Number

Package Number

Package Description

74F193SC

M16A

16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow

74F193SJ

(Note 1)

M16D

16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide

74F193PC

N16E

16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide