SN74LS169 Datasheet | Motorola Semiconductor

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. - Low Power Dissipation 100 m W Typical - High-Speed Count Frequency 30 MHz Typical - Fully Synchronous Operation - Full Carry Lookahead for Easy Cascading - Single Up / Down Control Input - Positive Edge-Trigger Operation - Input Clamp Diodes Limit High-Speed Termination Effects CONNECTION DIAGRAM DIP (TOP VIEW) VCC 16 TC 15 Q0 14 Q1 13 Q2 12 Q3 11 CET 10 PE 9 NOTE: The Flatpak version has the same pinouts (Connection...