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HD74HC390 Datasheet Dual Decade Counters

Manufacturer: Hitachi Semiconductor (now Renesas)

Overview: HD74HC390 Dual Decade Counters.

General Description

The HD74HC390 incorporate dual decade counters, each posed of a divide-by-two and a divide-byfive counter.

The divide-by-two and divide-by-five counters can be cascaded to form dual decade, dual biquinary, or various binations up to a single divide-by-100 counter.

The HD74HC390 is incremented on the high to low transition (negative edge) of the clock input, and each has an independent clear input.

Key Features

  • High Speed Operation: tpd (Clock A to QA) = 11 ns typ (CL = 50 pF) High Output Current: Fanout of 10 LSTTL Loads Wide Operating Voltage: VCC = 2 to 6 V Low Input Current: 1 µA max Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C) Function Table Clock A X B X X X Clear H L L Operation Clear ÷2 and ÷5 Increment ÷2 Increment ÷5 HD74HC390 Pin Arrangement 1A 1Clear 1QA Output 1B 1QB Outputs 1QC 1QD GND 1 2 3 4 5 6 7 8 (Top view) CL.

Similar Datasheet

Brand Logo Part Number Description Manufacturer
Renesas Logo HD74HC390 Dual Decade Counters Renesas

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HD74HC390 Distributor