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HD74HC393 Datasheet Dual 4-bit Binary Counters

Manufacturer: Hitachi Semiconductor (now Renesas)

Overview: HD74HC393 Dual 4-bit Binary Counters.

General Description

The HD74HC393 contain two 4-bit ripple carry binary counters, which can be cascaded to create a single divide-by-256 counter.

The HD74HC393 is incremented on the high to low transition (negative edge) of the clock input, and each has an independent clear input.

when clear is set high all four bits of each counter are set to a low level.

Key Features

  • High Speed Operation: tpd (A to QA) = 16 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 X H L Clear H L L L L Outputs L No change No change No change Advance to next state HD74HC393 Pin Arrangement 1A 1Clear 1QA 1QB 1QC 1QD GND 1 2 3 4 5 6 7 CLR QA QB A A QC QD QC QD CLR Q.

Similar Datasheet

Brand Logo Part Number Description Manufacturer
Renesas Logo HD74HC393 Dual 4-bit Binary Counters Renesas

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