Description
DM5490 DM7490A DM7493A Decade and Binary Counters July 1992 DM5490 DM7490A DM7493A Decade and Binary Counters General .
Each of these monolithic counters contains four masterslave flip-flops and additional gating to provide a divide-bytwo counter and a three-stage binar.
Features
* Y Typical power dissipation 90A 145 mW 93A 130 mW
Y Count frequency 42 MHz
Connection Diagrams
Dual-In-Line Package
TL F 6533
* 1
Order Number DM5490J DM5490W or DM7490AN See NS Package Number J14A N14A or W14B
Dual-In-Line Package
Order Number DM7493AN See NS Package Number N14A
TL F 6
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 90A counters by connecting