74HC390 Ver la hoja de datos (PDF) - Philips Electronics

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74HC390

Dual decade ripple counter

Philips Electronics 

Philips Semiconductors

Dual decade ripple counter

AC WAVEFORMS

Product specification

74HC/HCT390

(1) HC : VM = 50%; VI = GND to VCC.

HCT : VM = 1.3 V; VI = GND to 3 V.

Fig.6 Waveforms showing the clock (nCPn) to output (nQn) propagation delays, the clock pulse width, the output

transition times and the maximum clock frequency.

(1) HC : VM = 50%; VI = GND to VCC.

HCT : VM = 1.3 V; VI = GND to 3 V.

Fig.7 Waveforms showing the master reset (nMR) pulse width, the master reset to output (nQn) propagation

delays and the master reset to clock (nCPn) removal time.

PACKAGE OUTLINES

See “74HC/HCT/HCU/HCMOS Logic Package Outlines”.

December 1990

7

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