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MM54C90 Datasheet(PDF) 1 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part No. MM54C90
Description  4-Bit Decade, Binary Counter
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Maker  NSC [National Semiconductor (TI)]
Homepage  http://www.national.com
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MM54C90 Datasheet(HTML) 1 Page - National Semiconductor (TI)

   
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TLF5889
February 1988
MM54C90MM74C90 4-Bit Decade Counter
MM54C93MM74C93 4-Bit Binary Counter
General Description
The
MM54C90MM74C90
decade
counter
and
the
MM54C93MM74C93 binary counter and complementary
MOS (CMOS) integrated circuits constructed with N- and
P-channel enhancement mode transistors The 4-bit decade
counter can reset to zero or preset to nine by applying ap-
propriate logic level on the R01 R02 R91 and R92 inputs
Also a separate flip-flop on the A-bit enables the user to
operate it as a divide-by-2 5 or 10 frequency counter The
4-bit binary counter can be reset to zero by applying high
logic level on inputs R01 and R02 and a separate flip-flop on
the A-bit enables the user to operate it as a divide-by-2 -8
or -16 divider Counting occurs on the negative going edge
of the input pulse
All inputs are protected against static discharge damage
Features
Y
Wide supply voltage range
3V to 15V
Y
Guaranteed noise margin
1V
Y
High noise immunity
045 VCC (typ)
Y
Low power
Fan out of 2
TTL compatiblity
driving 74L
Y
The
MM54C93MM74C93
follows
the
MM54L93
MM74L93 Pinout
Connection and Logic Diagrams
MM54C90MM74C90
Dual-In-Line Package
TLF5889 – 2
Top View
MM54C93MM74C93
Dual-In-Line Package
TLF5889 – 4
Top View
Order Number MM54C90 or MM74C93
M54C90MM74C90
TLF5889 – 1
MM54C93MM74C93
TLF5889 – 3
C1995 National Semiconductor Corporation
RRD-B30M105Printed in U S A


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