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MM54C90

Part Number	MM54C90
Manufacturer	National
Description	4-Bit Decade / Binary Counter
Published	May 9, 2005
Detailed Description	MM54C90 MM74C90 4-Bit Decade Counter MM54C93 MM74C93 4-Bit Binary Counter February 1988 MM54C90 MM74C90 4-Bit Decade C...
Datasheet	MM54C90 PDF File

Overview

MM54C90 MM74C90 4-Bit Decade Counter MM54C93 MM74C93 4-Bit Binary Counter February 1988 MM54C90 MM74C90 4-Bit Decade Counter MM54C93 MM74C93 4-Bit Binary Counter General Description The MM54C90 MM74C90 decade counter and the MM54C93 MM74C93 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 appropriate 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 Y Y Y Y Wide supply voltage range Guaranteed noise margin High noise immunity Low power TTL compatiblity The MM54C93 MM74C93 MM74L93 Pinout follows 3V to 15V 1V 0 45 VCC (typ ) Fan out of 2 driving 74L the MM54L93 Connection and Logic Diagrams MM54C90 MM74C90 Dual-In-Line Package MM54C93 MM74C93 Dual-In-Line Package TL F 5889 – 2 TL F 5889 – 4 Top View Order Number MM54C90 or MM74C93 M54C90 MM74C90 Top View MM54C93 MM74C93 TL F 5889 – 3 TL F 5889 – 1 C1995 National Semiconductor Corporation TL F 5889 RRD-B30M105 Printed in U S A Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Voltage at Any Pin (Note 1) Operating Temperature Range (TA) MM54C90 MM54C93 MM74C90 MM74C93 b 0 3V to VCC a 0 3V b 55 C to a 125 C b 40 C to a 85 C Power Dissipation (PD) Dual-In-Line Small Outline Operating VCC Range Absolute Maximum VCC Storage Temperature Range (TS) Lead Temperature (TL) (Soldering 10 seconds) 700...

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