MC74HC390A Series

Dual 4-Stage Binary Ripple Counter with ÷2 and ÷5 Sections

Catalog

Dual 4-Stage Binary Ripple Counter with ÷2 and ÷5 Sections

Part	Voltage - Supply [Min]	Voltage - Supply [Max]	Reset	Supplier Device Package	Logic Type	Count Rate	Number of Bits per Element	Number of Elements	Grade	Operating Temperature [Min]	Operating Temperature [Max]	Trigger Type	Qualification	Package / Case	Package / Case [x]	Package / Case [y]	Mounting Type	Package / Case	Package / Case	Direction	Timing
ON Semiconductor NLV74HC390ADR2G	2 V	6 V	Asynchronous	16-SOIC	Counter Decade	50 MHz	4	2	Automotive	-55 °C	125 °C	Negative Edge	AEC-Q100	16-SOIC	0.154 in	3.9 mm	Surface Mount
ON Semiconductor MC74HC390AFELG	2 V	6 V	Asynchronous	16-SOEIAJ	Counter Decade	50 MHz	4	2		-55 °C	125 °C	Negative Edge		16-SOIC			Surface Mount	0.209 "	5.3 mm
ON Semiconductor MC74HC390AD	2 V	6 V	Asynchronous	16-SOIC	Counter Decade	50 MHz	4	2		-55 °C	125 °C	Negative Edge		16-SOIC	0.154 in	3.9 mm	Surface Mount
ON Semiconductor MC74HC390DR2	2 V	6 V	Asynchronous	16-SOIC	Counter Decade	50 MHz	4	2		-55 °C	125 °C	Negative Edge		16-SOIC	0.154 in	3.9 mm	Surface Mount
ON Semiconductor MC74HC390ADTR2G	2 V	6 V	Asynchronous	16-TSSOP	Counter Decade	50 MHz	4	2		-55 °C	125 °C	Negative Edge		16-TSSOP	0.173 in	4.4 mm	Surface Mount
ON Semiconductor MC74HC390ADT	2 V	6 V	Asynchronous	16-TSSOP	Counter Decade	50 MHz	4	2		-55 °C	125 °C	Negative Edge		16-TSSOP	0.173 in	4.4 mm	Surface Mount
ON Semiconductor MC74HC390AFL1	2 V	6 V	Asynchronous	16-SOEIAJ	Counter Decade	50 MHz	4	2		-55 °C	125 °C	Negative Edge		16-SOIC			Surface Mount	0.209 "	5.3 mm
ON Semiconductor M74HC390D	2 V	6 V	Asynchronous		Counter Decade	79 MHz	4	2		-55 °C	125 °C	Negative Edge								Up	Synchronous

Catalog

Dual 4-Stage Binary Ripple Counter with ÷2 and ÷5 Sections

Key Features

• Output Drive Capability: 10 LSTTL Loads

• Outputs Directly Interface to CMOS, NMOS, and TTL

• Operating Voltage Range: 2 to 6 V

• Low Input Current: 1mA

• High Noise Immunity Characteristic of CMOS Devices

• In Compliance with the Requirements Defined by JEDEC Standard No 7A

• Chip Complexity: 244 FETs or 61 Equivalent Gates

• Pb-Free Packages are Available*

Description

High-Performance Silicon-Gate CMOSThe MC74HC390A is identical in pinout to the LS390. The device inputs are compatible with standard CMOS outputs; with pullup resistors,they are compatible with LSTTL outputs.This device consists of two independent 4-bit counters, each composed of a divide-by-two and a divide-by-five section. The divide-by-two and divide-by-five counters have separate clock inputs, and can be cascaded to implement various combinations of divide-by-2 and/or divide-by-5 up to a divide-by-100 counter.Flip-flops internal to the counters are triggered by high-to-low transitions of the clock input. A separate, asynchronous reset is provided for each 4-bitcounter. State changes of the Q outputs do not occur simultaneously because of internal ripple delays. Therefore, decoded output signals are subject to decoding spikes and should not be used as clocks or strobes except when gated with the Clock of the HC390A.