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Fairchild Semiconductor - Synchronous Presettable Binary Counter

Numéro de référence 74AC161
Description Synchronous Presettable Binary Counter
Fabricant Fairchild Semiconductor 
Logo Fairchild Semiconductor 





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74AC161 fiche technique
November 1988
Revised November 1999
74AC161 74ACT161
Synchronous Presettable Binary Counter
General Description
The AC/ACT161 are high-speed synchronous modulo-16
binary counters. They are synchronously presettable for
application in programmable dividers and have two types
of Count Enable inputs plus a Terminal Count output for
versatility in forming synchronous multistage counters. The
AC/ACT161 has an asynchronous Master Reset input that
overrides all other inputs and forces the outputs LOW.
Features
s ICC reduced by 50%
s Synchronous counting and loading
s High-speed synchronous expansion
s Typical count rate of 125 MHz
s Outputs source/sink 24 mA
s ACT161 has TTL-compatible inputs
Ordering Code:
Order Number Package Number
Package Description
74AC161SC
M16A
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150Narrow Body
74AC161SJ
M16D
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74AC161MTC
MTC16
16-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
74AC161PC
N16E
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300Wide
74ACT161SC
M16A
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150Narrow Body
74ACT161SJ
M16D
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
74ACT161MTC
MTC16
16-Lead Thin Shrwinwkw.DSamtaSahlleeOt4uUt.lcinome Package (TSSOP), JEDEC MO-153, 4.4mm Wide
74ACT161PC
N16E
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300Wide
Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code.
Connection Diagram
Logic Symbols
IEEE/IEC
Pin Descriptions
Pin Names
CEP
CET
CP
MR
P0P3
PE
Q0Q3
TC
Description
Count Enable Parallel Input
Count Enable Trickle Input
Clock Pulse Input
Asynchronous Master Reset Input
Parallel Data Inputs
Parallel Enable Inputs
Flip-Flop Outputs
Terminal Count Output
FACTis a trademark of Fairchild Semiconductor Corporation.
© 1999 Fairchild Semiconductor Corporation DS009931
www.fairchildsemi.com

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