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SN74CBT3244DW Fiches technique(PDF) 1 Page - Texas Instruments |
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SN74CBT3244DW Fiches technique(HTML) 1 Page - Texas Instruments |
1 / 4 page SN74CBT3244 OCTAL FET BUS SWITCH SCDS001H – NOVEMBER 1992 – REVISED MAY 1998 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Functionally Equivalent to QS3244 D Standard ’244-Type Pinout D 5-Ω Switch Connection Between Two Ports D TTL-Compatible Input Levels D Package Options Include Plastic Small-Outline (DW), Shrink Small-Outline (DB, DBQ), Thin Very Small-Outline (DGV), and Thin Shrink Small-Outline (PW) Packages description The SN74CBT3244 provides eight bits of high-speed TTL-compatible bus switching in a standard ’244 device pinout. The low on-state resistance of the switch allows connections to be made with minimal propagation delay. The device is organized as two 4-bit low-impedance switches with separate output-enable (OE) inputs. When OE is low, the switch is on and data can flow from port A to port B, or vice versa. When OE is high, the switch is open and a high-impedance state exists between the two ports. The SN74CBT3244 is characterized for operation from 0 °C to 70 °C. FUNCTION TABLE (each 4-bit bus switch) INPUT OE FUNCTION L A port = B port H Disconnect logic diagram (positive logic) 1OE 1A1 1A4 1B1 1B4 2 8 1 18 12 2OE 2A1 2A4 2B1 2B4 11 17 19 9 3 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. Copyright © 1998, Texas Instruments Incorporated 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. 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 1OE 1A1 2B4 1A2 2B3 1A3 2B2 1A4 2B1 GND VCC 2OE 1B1 2A4 1B2 2A3 1B3 2A2 1B4 2A1 DB, DBQ, DGV, DW, OR PW PACKAGE (TOP VIEW) |
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