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SN74HC253N データシート(PDF) 1 Page - Texas Instruments |
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SN74HC253N データシート(HTML) 1 Page - Texas Instruments |
1 / 8 page SN54HC253, SN74HC253 DUAL 4-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS SCLS133B – DECEMBER 1982 – REVISED MAY 1997 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D 3-State Version of ’HC153 D High-Current Inverting Outputs Drive up to 15 LSTTL Loads D Permit Multiplexing from n Lines to One Line D Perform Parallel-to-Serial Conversion D Package Options Include Plastic Small-Outline (D) and Ceramic Flat (W) Packages, Ceramic Chip Carriers (FK), and Standard Plastic (N) and Ceramic (J) 300-mil DIPs description Each of 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 the high-impedance state), the low impedance of the single enabled output drives the bus line to a high or low logic level. Each output has its own output-enable (OE) input. The outputs are disabled when their respective OE is high. The SN54HC253 is characterized for operation over the full military temperature range of –55 °C to 125°C. The SN74HC253 is characterized for operation from –40 °C to 85 °C. FUNCTION TABLE INPUTS OUTPUT SELECT† DATA OE OUTPUT Y B A C0 C1 C2 C3 OE Y X X X X X X H Z L LL XX X L L L LH XX X L H L HX LX XL L L HX HX X L H H LX XL XL L H LX XH X 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. Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. SN54HC253 ...J OR W PACKAGE SN74HC253 . . . 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 SN54HC253 . . . FK PACKAGE (TOP VIEW) 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 1OE B 1C3 1C2 1C1 1C0 1Y GND VCC 2OE A 2C3 2C2 2C1 2C0 2Y NC – No internal connection Copyright © 1997, Texas Instruments Incorporated 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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同様の説明 - SN74HC253N |
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