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SN74CBT3245ADB 数据表(PDF) 1 Page - Texas Instruments |
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SN74CBT3245ADB 数据表(HTML) 1 Page - Texas Instruments |
1 / 15 page SN74CBT3245A OCTAL FET BUS SWITCH SCDS002Q − NOVEMBER 1992 − REVISED DECEMBER 2004 1 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 D Standard ’245-Type Pinout D 5-Ω Switch Connection Between Two Ports D TTL-Compatible Input Levels 1 2 3 4 5 6 7 8 9 10 20 19 18 17 16 15 14 13 12 11 NC A1 A2 A3 A4 A5 A6 A7 A8 GND VCC OE B1 B2 B3 B4 B5 B6 B7 B8 DB, DBQ, DGV, DW, OR PW PACKAGE (TOP VIEW) NC − No internal connection RGY PACKAGE (TOP VIEW) 120 10 11 2 3 4 5 6 7 8 9 19 18 17 16 15 14 13 12 OE B1 B2 B3 B4 B5 B6 B7 A1 A2 A3 A4 A5 A6 A7 A8 NC − No internal connection terminal assignments 1234 A A1 NC VCC OE B A3 B2 A2 B1 C A5 A4 B4 B3 D A7 B6 A6 B5 E GND A8 B8 B7 NC − No internal connection description/ordering information The SN74CBT3245A provides eight bits of high-speed TTL-compatible bus switching. The SOIC, SSOP, TSSOP, and TVSOP packages provide a standard ’245 device pinout. The low on-state resistance of the switch allows connections to be made with minimal propagation delay. The device is organized as one 8-bit switch. When the output-enable (OE) input is low, the switch is on, and port A is connected to port B. When OE is high, the switch is open, and the high-impedance state exists between the two ports. To ensure the high-impedance state during power up or power down, OE should be tied to VCC through a pullup resistor; the minimum value of the resistor is determined by the current-sinking capability of the driver. 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 2004, 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. GQN OR ZQN PACKAGE (TOP VIEW) 1 234 A B C D E |
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类似说明 - SN74CBT3245ADB |
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