This part is a kind of semiconductor called CD4553.

Function of this product has (MC14553B) 3 Digit BCD Counter.

Manufacturers : ON

Image and pinout :

Some of the text within the PDF file :

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 the multiplexer output selector. This device is used in instrumentation counters, clock displays, digital panel meters, and as a building block for general logic applications. http://onsemi.com MARKING DIAGRAMS 16 PDIP–16 P SUFFIX CASE 648 MC14553BCP AWLYYWW 1 • • • • • • • TTL Compatible Outputs [ ... ]

CD4553 PDF Datasheet Download