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74F569PC Datasheet(PDF) 1 Page - Fairchild Semiconductor |
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74F569PC Datasheet(HTML) 1 Page - Fairchild Semiconductor |
1 / 9 page © 1999 Fairchild Semiconductor Corporation DS009565 www.fairchildsemi.com April 1988 Revised August 1999 74F569 4-Bit Bidirectional Counter with 3-STATE Outputs General Description The 74F569 is a fully synchronous, reversible counter with 3-STATE outputs. The 74F569 is a binary counter, featur- ing preset capability for programmable operation, carry loo- kahead for easy cascading, and a U/D input to control the direction of counting. For maximum flexibility there are both synchronous and master asynchronous reset inputs as well as both Clocked Carry (CC) and Terminal Count (TC) out- puts. All state changes except Master Reset are initiated by the rising edge of the clock. A HIGH signal on the Output Enable (OE) input forces the output buffers into the high impedance state but does not prevent counting, resetting or parallel loading. Features s Synchronous counting and loading s Lookahead carry capability for easy cascading s Preset capability for programmable operation s 3-STATE outputs for bus organized systems 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 FAST ® is a registered trademark of Fairchild Semiconductor Corporation. Order Number Package Number Package Description 74F569SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide 74F569SJ M20D 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 74F569PC N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide |
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