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SN74AHCT245DW 데이터시트(PDF) 2 Page - Texas Instruments |
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SN74AHCT245DW 데이터시트(HTML) 2 Page - Texas Instruments |
2 / 16 page SN54AHCT245, SN74AHCT245 OCTAL BUS TRANSCEIVERS WITH 3STATE OUTPUTS SCLS233M − OCTOBER 1995 − REVISED SEPTEMBER 2003 2 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 FUNCTION TABLE (each transceiver) INPUTS OPERATION OE DIR OPERATION L L B data to A bus L H A data to B bus H X Isolation logic diagram (positive logic) DIR OE A1 B1 To Seven Other Channels 1 2 19 18 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): Control inputs −0.5 V to 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I/O, Output voltage range, VO (see Note 1) −0.5 V to VCC + 0.5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input clamp current, IIK (VI < 0): Control inputs −20 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . I/O, Output clamp current, IOK (VO < 0 or VO > VCC) ±20 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous output current, IO (VO = 0 to VCC) ±25 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous current through VCC or GND ±75 mA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Package thermal impedance, θJA (see Note 2): DB package 70 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (see Note 2): DGV package 92 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (see Note 2): DW package 58 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (see Note 2): N package 69 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (see Note 2): NS package 60 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (see Note 2): PW package 83 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . (see Note 3): RGY package 37 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Storage temperature range, Tstg −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. NOTES: 1. The input and output voltage ratings may be exceeded if the input and output current ratings are observed. 2. The package thermal impedance is calculated in accordance with JESD 51-7. 3. The package thermal impedance is calculated in accordance with JESD 51-5. |
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