M54HC390 M74HC390 DUAL DECADE COUNTER . . . . . ..
ST Microelectronics
M54HC390 - DUAL DECADE COUNTER
M54HC390 M74HC390 DUAL DECADE COUNTER . . . . . . . . HIGH SPEED fMAX = 84 MHz (TYP.) AT VCC = 5 V LOW POWER DISSIPATION ICC = 4 µA (MAX.) AT TA = 2.