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SN74F245 데이터시트(PDF) 2 Page - Texas Instruments |
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SN74F245 데이터시트(HTML) 2 Page - Texas Instruments |
2 / 7 page SN54F245, SN74F245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SDFS010A – MARCH 1987 – REVISED OCTOBER 1993 2–2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 logic symbol† logic diagram (positive logic) A5 6 A6 7 A7 8 A8 9 A2 3 A3 4 A4 5 OE A1 2 G3 19 3EN2[AB] B5 14 B6 13 B7 12 B8 11 B1 18 B2 17 B3 16 B4 15 3EN1[BA] 1 DIR DIR OE A1 B1 1 2 18 19 To Seven Other Channels 1 2 † 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, VI (except I/O ports) (see Note 1) – 1.2 V to 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input current range – 30 mA to 5 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Voltage range applied to any output in the disabled or power-off state – 0.5 V to 5.5 V . . . . . . . . . . . . . . . . . . . Voltage range applied to any output in the high state – 0.5 V to VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Current into any output in the low state: SN54F245 (A1 thru A8) 40 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SN54F245 (B1 thru B8) 96 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SN74F245 (A1 thru A8) 48 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SN74F245 (B1 thru B8) 128 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating free-air temperature range: SN54F245 – 55 °C to 125°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SN74F245 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 voltage ratings may be exceeded provided the input current ratings are observed. |
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