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DM7493A - Decade and Binary Counters

Download the DM7493A datasheet PDF. This datasheet also covers the DM7490A variant, as both devices belong to the same decade and binary counters family and are provided as variant models within a single manufacturer datasheet.

General Description

Each of these monolithic counters contains four masterslave flip-flops and additional gating to provide a divide-bytwo counter and a three-stage binary counter for which the count cycle length is divide-by-five for the 90A and divideby-eight for the 93A All of these counters have a gated zero reset

Key Features

  • Y Typical power dissipation 90A 145 m.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (DM7490A-NationalSemiconductor.pdf) that lists specifications for multiple related part numbers.

📁 Similar Datasheet

Part Number Description Manufacturer
DM7493A Decade and Binary Counters Fairchild Semiconductor
DM7490A Decade and Binary Counters Fairchild Semiconductor
DM7400 Quad 2-Input NAND Gates Fairchild Semiconductor
DM7402 Quad 2-Input NOR Gates Fairchild Semiconductor
DM7403 Quad 2-Input NAND Gates with Open-Collector Outputs Fairchild Semiconductor

Other Datasheets by National Semiconductor (now Texas Instruments)

Part Number Description
DM7490A Decade and Binary Counters
DM7497 Synchronous Modulo-64 Bit Rate Multiplier
DM7400 Quad 2-Input NAND Gates
DM7401 Quad 2-Input NAND Gates with Open-Collector Outputs
DM7402 Quad 2-Input NOR Gates

Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
DM5490 DM7490A DM7493A Decade and Binary Counters July 1992 DM5490 DM7490A DM7493A Decade and Binary Counters General Description Each of these monolithic counters contains four masterslave flip-flops and additional gating to provide a divide-bytwo counter and a three-stage binary counter for which the count cycle length is divide-by-five for the 90A and divideby-eight for the 93A All of these counters have a gated zero reset and the 90A also has gated set-to-nine inputs for use in BCD nine’s complement applications To use their maximum count length (decade or four-bit binary) the B input is connected to the QA output The input count pulses are applied to input A and the outputs are as described in the appropriate truth table A symmetrical divide-by-ten count can be obtained from the 9