74F269 Datasheet | Fairchild Semiconductor

Description The 74F269 is a fully synchronous 8-stage up/down counter featuring a preset capability for programmable operation, carry lookahead for easy cascading and a U/D input to control the direction of counting. All state changes, whether in counting or parallel loading, are initiated by the rising edge of the clock. Features s Synchronous counting and loading s Built-in lookahead carry capability s Count frequency 100 MHz s Supply current 113 m A typ s 300 mil slimline package Ordering Code: Order Number 74F269SC 74F269SPC Package Number M24B N24C Package Description 24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide 24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-100, 0.300 Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Logic Symbols Connection Diagram IEEE/IEC Function Table PE L CEP X CET X U/D X CP H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial = Transition LOW-to-HIGH Function Parallel Load All Flip-Flops Hold Hold (TC Held HIGH) Count Up Count Down © 1999 Fairchild Semiconductor Corporation DS009510 .fairchildsemi. Unit Loading/Fan Out U.L. Pin Names P0- P7 PE U/D CEP CET CP TC Q0- Q7 Description HIGH/LOW Parallel Data Inputs Parallel Enable Input (Active LOW) Up-Down Count Control Input Count Enable Parallel Input (Active LOW) Count Enable Trickle Input (Active LOW) Clock Input Terminal Count Output (Active LOW) Flip-Flop Outputs 1.0/1.0 1.0/1.0 1.0/1.0 1.0/1.0 1.0/1.0 1.0/1.0 5.0/33.3 50/33.3 Input IIH/IIL Output IOH/IOL 20 µA/- 0.6 m A 20 µA/- 0.6 m A 20 µA/- 0.6 m A 20 µA/- 0.6 m A 20 µA/- 0.6 m A 20 µA/- 0.6 m A - 1 m A/20 m A - 1 m A/20 m A Logic Diagram .fairchildsemi. Absolute Maximum Ratings(Note 1) Storage Temperature Ambient Temperature under Bias Junction Temperature under Bias VCC Pin Potential to Ground Pin Input Voltage (Note 2) Input Current (Note 2) Voltage Applied to...