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SN74BCT657DWR Fiches technique(PDF) 4 Page - Texas Instruments |
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SN74BCT657DWR Fiches technique(HTML) 4 Page - Texas Instruments |
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4 / 10 page  SN74BCT657 OCTAL TRANSCEIVER WITH PARITY GENERATOR/CHECKER AND 3STATE OUTPUTS SCBS079B − NOVEMBER 1991 − REVISED APRIL 1994 2−4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 POST OFFICE BOX 1443 • HOUSTON, TEXAS 77251−1443 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 (see Note 1) −0.5 V to 7 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 (VI < 0) −30 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Current into any output in the low state, IO 128 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating free-air temperature range 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 negative-voltage ratings may be exceeded if the input and output clamp-current ratings are observed. recommended operating conditions (see Note 2) MIN NOM MAX UNIT VCC Supply voltage 4.5 5 5.5 V VIH High-level input voltage 2 V VIL Low-level input voltage 0.8 V IIK Input clamp current −18 mA IOH High-level output current A port −3 mA IOH High-level output current B port, PARITY, ERR −15 mA IOL Low-level output current A port 24 mA IOL Low-level output current B port, PARITY, ERR 64 mA TA Operating free-air temperature 0 70 °C NOTE 2: Unused or floating pins (input or I/O) must be held high or low. |
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Description similaire - SN74BCT657DWR |
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