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This Part Name is 7490.

This is Semiconductor.

This product has Decade and Binary Counters functions.

Manufacturers of the product is Fairchild Semiconductor

Image and pinout :

7490 datasheet pinout

Some of the text files within the PDF file :

DM7490A Decade and Binary Counters August 1986 Revised March 2000 DM7490A Decade and Binary Counters General Description The DM7490A monolithic counter 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. The counter has a gated zero reset and also has gated setto-nine inputs for use in BCD nine’s complement applications. To use the 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 Function Table. A symmetrical divide-by-ten count can be obtained from the counters by connecting the QD output to the A input and applying the input count to the B input which gives a divideby-ten square wave at output QA. Features s Typical power dissipation 145 mW s Count frequency 42 MHz Ordering Code: Order Number DM7490AN Package Numbe [ ... ]


7490 PDF Datasheet File

2017/06/13 14:19 2017/06/13 14:19