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MC74HC390A Datasheet Dual 4-stage Binary Ripple Counter

Manufacturer: onsemi

Overview: DATA SHEET .onsemi. Dual 4-Stage Binary Ripple Counter with  2 and  5 Sections High−Performance Silicon−Gate CMOS MC74HC390A The MC74HC390A is identical in pinout to the LS390. The device inputs are patible with standard CMOS outputs; with pullup resistors, they are patible with LSTTL outputs. This device consists of two independent 4−bit counters, each posed 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 binations of  2 and/or  5 up to a  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−bit counter. 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.

Key Features

  • Output Drive Capability: 10 LSTTL Loads.
  • Outputs Directly Interface to CMOS, NMOS, and TTL.
  • Operating Voltage Range: 2.0 to 6.0 V.
  • Low Input Current: 1 mA.
  • High Noise Immunity Characteristic of CMOS Devices.
  • In Compliance with the Requirements Defined by JEDEC Standard No 7 A.
  • Chip Complexity: 244 FETs or 61 Equivalent Gates.
  • Q Suffix for Automotive and Other.

MC74HC390A from other manufacturers

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Brand Logo Part Number Description Other Manufacturers
Motorola Logo MC74HC390A Dual 4-Stage Binary Ripple Counter Motorola
Motorola Logo MC74HC390 Dual 4-Stage Binary Ripple Counter Motorola

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