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National Semiconductor - (CD40160BM - CD40163BM) Decade Counter with Asynchronous Clear

Numéro de référence CD40163BM
Description (CD40160BM - CD40163BM) Decade Counter with Asynchronous Clear
Fabricant National Semiconductor 
Logo National Semiconductor 





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CD40163BM fiche technique
March 1988
CD40160BM CD40160BC
Decade Counter with Asynchronous Clear
CD40161BM CD40161BC
Binary Counter with Asynchronous Clear
CD40162BM CD40162BC
Decade Counter with Synchronous Clear
CD40163BM CD40163BC
Binary Counter with Synchronous Clear
General Description
These (synchronous presettable up) counters are monolith-
ic complementary MOS (CMOS) integrated circuits con-
structed with N- and P-channel enhancement mode transis-
tors They feature an internal carry look-ahead for fast
counting schemes and for cascading packages without ad-
ditional gating
A low level at the load input disables counting and causes
the outputs to agree with the data input after the next posi-
tive clock edge The clear function for the CD40162B and
CD40163B is synchronous and a low level at the clear input
sets all four outputs low after the next positive clock edge
The clear function for the CD40160B and CD40161B is
asynchronous and a low level at the clear input sets all four
outputs low regardless of the state of the clock
Counting is enabled when both count enable inputs are
high Input T is fed forward to also enable the carry out The
carry output is a positive pulse with a duration approximately
equal to the positive portion of QA and can be used to en-
able successive cascaded stages Logic transitions at the
enable P or T inputs can occur when the clock is high or
low
Features
Y Wide supply voltage range
3 0V to 15V
Y High noise immunity
Y Low power TTL
0 45 VDD (typ )
fan out of 2 driving 74L
compatibility
or 1 driving 74LS
Y Internal look-ahead for fast counting schemes
Y Carry output for N-bit cascading
Y Load control line
Y Synchronously programmable
Y Equivalent to MC14160B MC14161B MC14162B
MC14163B
Y Equivalent to MM74C160 MM74C161 MM74C162
MM74C163
Connection Diagram
Dual-In-Line Package
Order Number CD40160B CD40161B
CD40162B or CD40163B
Top View
C1995 National Semiconductor Corporation TL F 5986
TL F 5986 – 1
RRD-B30M105 Printed in U S A

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