This part is a kind of semiconductor called 74LS169.

Function of this product has DM74LS169 / SN74LS169.

Manufacturers : ETC

Image and pinout :

Some of the text within the PDF file :

BCD DECADE/MODULO 16 BINARY SYNCHRONOUS BI-DIRECTIONAL COUNTERS The SN54 / 74LS168 and SN54 / 74LS169 are fully synchronous 4-stage up/down counters featuring a preset capability for programmable operation, carry lookahead for easy cascading and a U/ D input to control the direction of counting. The SN54 / 74LS168 counts in a BCD decade (8, 4, 2, 1) sequence, while the SN54 / 74LS169 operates in a Modulo 16 binary sequence. All state changes, whether in counting or parallel loading, are initiated by the LOW-to-HIGH transition of the clock. SN54/74LS168 SN54/74LS169 BCD DECADE/ MODULO 16 BINARY SYNCHRONOUS BI-DIRECTIONAL COUNTERS LOW POWER SCHOTTKY • • • • • • • Low Power Dissipation 100 mW Typical High-Speed Count Frequency 30 MHz Typical Fully Synchro [ ... ]

74LS169 PDF Datasheet Download