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74AC299PC Datasheet(PDF) 1 Page - Fairchild Semiconductor |
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74AC299PC Datasheet(HTML) 1 Page - Fairchild Semiconductor |
1 / 11 page © 2005 Fairchild Semiconductor Corporation DS009893 www.fairchildsemi.com July 1988 Revised March 2005 74AC299 • 74ACT299 8-Input Universal Shift/Storage Register with Common Parallel I/O Pins General Description The AC/ACT299 is an 8-bit universal shift/storage register with 3-STATE outputs. Four modes of operation are possi- ble: hold (store), shift left, shift right and load data. The par- allel load inputs and flip-flop outputs are multiplexed to reduce the total number of package pins. Additional out- puts are provided for flip-flops Q0, Q7 to allow easy serial cascading. A separate active LOW Master Reset is used to reset the register. Features s ICC and IOZ reduced by 50% s Common parallel I/O for reduced pin count s Additional serial inputs and outputs for expansion s Four operating modes: shift left, shift right, load and store s 3-STATE outputs for bus-oriented applications s Outputs source/sink 24 mA s ACT299 has TTL-compatible inputs Ordering Code: Device also available in Tape and Reel. Specify by appending suffix letter “X” to the ordering code. Pb-Free package per JEDEC J-STD-020B. Note 1: “_NL” indicates Pb-Free package (per JEDEC J-STD-020B). Device available in Tape and Reel only. Connection Diagram Pin Descriptions FACT ¥ is a trademark of Fairchild Semiconductor Corporation. Order Number Package Number Package Description 74AC299SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide 74AC299SCX_NL (Note 1) M20B Pb-Free 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide 74AC299SJ M20D Pb-Free 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 74AC299MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 74AC299PC N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide 74ACT299SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide 74ACT299MTC MTC20 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide 74ACT299PC N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide Pin Names Description CP Clock Pulse Input DS0 Serial Data Input for Right Shift DS7 Serial Data Input for Left Shift S0, S1 Mode Select Inputs MR Asynchronous Master Reset OE1, OE2 3-STATE Output Enable Inputs I/O0–I/O7 Parallel Data Inputs or 3-STATE Parallel Outputs Q0, Q7 Serial Outputs |
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Descripción similar - 74AC299PC |
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