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SN74BCT640DWR Fiches technique(PDF) 2 Page - Texas Instruments |
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SN74BCT640DWR Fiches technique(HTML) 2 Page - Texas Instruments |
2 / 12 page SN54BCT640, SN74BCT640 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SCBS025C – SEPTEMBER 1988 – REVISED APRIL 1994 2–2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 logic symbol† logic diagram (positive logic) 1 2 A1 B1 3 EN1 [BA] 1 DIR 3 EN2 [AB] 2 A1 3 A2 B1 18 4 A3 5 A4 6 A5 7 A6 8 A7 9 A8 B2 17 B3 16 B5 14 B4 15 B6 13 B8 11 B7 12 OE 1 19 1 18 2 G3 19 OE DIR 1 To Seven Other Channels † This symbol is in accordance with ANSI/IEEE Std 91-1984 and IEC Publication 617-12. absolute maximum ratings over operating free-air temperature range (unless otherwise noted)‡ Supply voltage range, VCC – 0.5 V to 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input voltage range: Control inputs (see Note 1) – 0.5 V to 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I/O ports (see Note 1) – 0.5 V to 5.5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Voltage range applied to any output in the disabled or power-off state, VO – 0.5 V to 5.5 V . . . . . . . . . . . . . . . Voltage range applied to any output in the high state, VO – 0.5 V to VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input clamp current, IIK –30 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Current into any output in the low state: SN54BCT640 96 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SN74BCT640 128 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating free-air temperature range: SN54BCT640 – 55 °C to 125°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SN74BCT640 0 °C to 70°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage temperature range – 65 °C to 150°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ‡ Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTE 1: The input and output voltage ratings may be exceeded if the input and output current ratings are observed. |
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