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SN74ALS640BDWRE4 Fiches technique(PDF) 2 Page - Texas Instruments |
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SN74ALS640BDWRE4 Fiches technique(HTML) 2 Page - Texas Instruments |
2 / 18 page SN54ALS640B, SN54AS640, SN74ALS640B, SN74AS640 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SDAS122A – DECEMBER 1983 – REVISED JANUARY 1995 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 logic symbol† logic diagram (positive logic) B2 17 B3 16 B4 15 A5 6 A6 7 A7 8 A8 9 A2 3 A3 4 A4 5 OE A1 2 G3 19 3 EN2 [AB] B5 14 B6 13 B7 12 B8 11 B1 18 3 EN1 [BA] 1 DIR 1 2 A1 B1 19 1 18 2 OE DIR To Seven Other Transceivers † 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, VCC 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input voltage, VI: All inputs 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I/O ports 5.5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating free-air temperature range, TA: SN54ALS640B – 55 °C to 125°C . . . . . . . . . . . . . . . . . . . . . . . . . . . SN74ALS640B 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. recommended operating conditions SN54ALS640B SN74ALS640B UNIT MIN NOM MAX MIN NOM MAX UNIT VCC Supply voltage 4.5 5 5.5 4.5 5 5.5 V VIH High-level input voltage 2 2 V VIL Low-level input voltage 0.7 0.8 V IOH High-level output current –12 –15 mA IOL Low level output current 12 24 mA IOL Low-level output current 48§ mA TA Operating free-air temperature –55 125 0 70 °C § Applies only to the -1 version and only if VCC is between 4.75 V and 5.25 V |
Numéro de pièce similaire - SN74ALS640BDWRE4 |
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Description similaire - SN74ALS640BDWRE4 |
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