资 源 简 介
CD4047B consists of a gatable astable mulTIvibrator with logic techniques incorporated to permit posiTIve or negaTIve edge-triggered monostable mulTIvibrator action with retriggering and external counting options.
Inputs include +TRIGGER, -TRIGGER, ASTABLE, ASTABLE, RETRIGGER, and EXTERNAL RESET. Buffered outputs are Q, Q and OSCILLATOR. In all modes of operation, and external capacitor must be connected between C-Timing and RC-Common terminal, and an external resistor must be connected between the R-Timing and RC-Common terminals.
Astable operation is enabled by a high level on the STABLE input or a low level on the ASTABLE input, or both. The period of the square wave at the Q and Q Outputs in this mode off operation is a function of the external components employed.
