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SN74ABTH25245 bảng dữ liệu(PDF) 2 Page - Texas Instruments |
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SN74ABTH25245 bảng dữ liệu(HTML) 2 Page - Texas Instruments |
2 / 8 page SN54ABTH25245, SN74ABTH25245 25- Ω OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS251F – JUNE 1992 – REVISED MAY 1997 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 description (continued) When VCC is between 0 and 2.1 V, the device is in the high-impedance state during power up or power down. However, to ensure the high-impedance state above 2.1 V, 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. The SN54ABTH25245 is characterized for operation over the full military temperature range of –55 °C to 125°C. The SN74ABTH25245 is characterized for operation from –40 °C to 85°C. FUNCTION TABLE INPUTS OPERATION OE DIR OPERATION L L B data to A bus L H A data to B bus H X Isolation logic symbol† † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. Pin numbers shown are for the DW, JT, and NT packages. B2 22 B3 20 B4 19 A5 7 A6 9 A7 10 A8 12 A2 3 A3 4 A4 6 OE A1 1 G3 13 3 EN2 [AB] B5 18 B6 17 B7 15 B8 14 B1 23 3 EN1 [BA] 24 DIR 1 2 |
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