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74F269 Fiches technique(PDF) 1 Page - Fairchild Semiconductor |
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74F269 Fiches technique(HTML) 1 Page - Fairchild Semiconductor |
1 / 6 page © 2000 Fairchild Semiconductor Corporation DS009510 www.fairchildsemi.com April 1988 Revised September 2000 74F269 8-Bit Bidirectional Binary Counter General 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 mA typ s 300 mil slimline package Ordering Code: Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code. Logic Symbols IEEE/IEC Connection Diagram Function Table H = HIGH Voltage Level L = LOW Voltage Level X = Immaterial = Transition LOW-to-HIGH Order Number Package Number Package Description 74F269SC M24B 24-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide 74F269SPC N24C 24-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide PE CEP CET U/D CP Function L XXX Parallel Load All Flip-Flops HH X X Hold HX H X Hold (TC Held HIGH) HL L H Count Up H LLL Count Down |
Numéro de pièce similaire - 74F269 |
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Description similaire - 74F269 |
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