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SN74F253N Datasheet(PDF) 1 Page - Texas Instruments |
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SN74F253N Datasheet(HTML) 1 Page - Texas Instruments |
1 / 7 page SN54F253, SN74F253 DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS SDFS064A – D2032, MARCH 1987 – REVISED OCTOBER 1993 Copyright © 1993, Texas Instruments Incorporated 2–1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 • 3-State Versions of SN54F153 and SN74F153 • Permits Multiplexing From N Lines to One Line • Performs Parallel-to-Serial Conversion • Package Options Include Plastic Small-Outline Packages, Ceramic Chip Carriers, and Standard Plastic and Ceramic 300-mil DIPs description These data selectors/multiplexers contain inverters and drivers to supply full binary decoding data selection to the AND-OR gates. Separate output-control inputs are provided for each of the two 4-line sections. The 3-state outputs can interface with and drive data lines of bus-organized systems. With all but one of the common outputs disabled (at a high-impedance state), the low impedance of the single enabled output will drive the bus line to a high or low logic level. Each output has its own strobe (G) inputs. The output is disabled when its strobe is high. The SN54F253 is characterized for operation over the full military temperature range of – 55 °C to 125 °C. The SN74F253 is characterized for operation from 0 °C to 70°C. FUNCTION TABLE INPUTS STROBE OUTPUT SELECT DATA STROBE G OUTPUT Y B A C0 C1 C2 C3 G Y X X X X X X H Z L LL XX X L L L LH XX X L H L HX LX X L L L HX HX X L H H LX XL X L L H LX XHX L H H HX XX L L L H H X X X H L H Select inputs A and B are common to both sections. 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 1G B 1C3 1C2 1C1 1C0 1Y GND VCC 2G A 2C3 2C2 2C1 2C0 2Y SN54F253 ...J PACKAGE SN74F253 ...D OR N PACKAGE (TOP VIEW) 32 1 20 19 910 11 12 13 4 5 6 7 8 18 17 16 15 14 A 2C3 NC 2C2 2C1 1C3 1C2 NC 1C1 1C0 SN54F253 . . . FK PACKAGE (TOP VIEW) NC – No internal connection PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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