CD4553 - (MC14553B) 3 Digit BCD Counter
MC14553B 3-Digit BCD Counter The MC14553B 3 digit BCD counter consists of 3 negative edge triggered BCD counters that are cascaded synchronously.
A quad latch at the output of each counter permits storage of any given count.
The information is then time division multiplexed, providing one BCD number or digit at a time.
Digit select outputs provide display control.
All outputs are TTL compatible.
An on chip oscillator provides the low frequency scanning clock which drives
CD4553 Features
* scanning clock which drives the multiplexer output selector. The frequency of the oscillator can be controlled externally by a capacitor between pins 3 and 4, or it can be overridden and driven with an external clock at pin 4. Multiple devices can be cascaded using the overflow output, which provide
