Up/Down Binary Counter
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54F 74F191 Up Down Binary Counter with Preset and Ripple Clock
November 1994
54F 74F191 Up Down B...
Description
www.DataSheet4U.com
54F 74F191 Up Down Binary Counter with Preset and Ripple Clock
November 1994
54F 74F191 Up Down Binary Counter with Preset and Ripple Clock
General Description
The ’F191 is a reversible modulo-16 binary counter featuring synchronous counting and asynchronous presetting The preset feature allows the ’F191 to be used in programmable 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 counting modes state changes are initiated by the rising edge of the clock
Features
Y Y Y Y
High-Speed 125 MHz typical count frequency Synchronous counting Asynchronous parallel load Cascadable
Commercial 74F191PC
Military
Package Number N16E
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 (0 300 Wide) Molded Small Outline EIAJ 16-Lead Cerpack 20-Lead Ceramic Leadless Chip Carrier Type C
54F191DM (Note 2) 74F191SC (Note 1) 74F191SJ (Note 1) 54F191FM (Note 2) 54F191LM (Note 2)
J16A M16A M16D W16A E20A
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
Pin Assignment for DIP SOIC and Flatpak Pin Assignment for LCC
TL F 9495–1
IEEE IEC
TL F 9495 – 2
TL F 9495 – 3
TL F 9495–4
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