Datenblatt-Suchmaschine für elektronische Bauteile |
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SN74ALS232B Datenblatt(PDF) 4 Page - Texas Instruments |
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SN74ALS232B Datenblatt(HTML) 4 Page - Texas Instruments |
4 / 8 page SN74ALS232B 16 × 4 ASYNCHRONOUS FIRST-IN, FIRST-OUT MEMORY SCAS251B – FEBRUARY 1989 – REVISED APRIL 1998 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 timing diagram Invalid Invalid Word 1 Word 1 Word 2 Word 3 RST LDCK D0–D3 UNCK Q0–Q3 EMPTY FULL W1 W2 W3 Don’t Care W1 W2 W15 W16 Word 2 Word 3 Word 4 Initialize Pointers Load W1 Unload W2 Empty Full 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 –0.5 V to 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Voltage range applied to a disabled 3-state output –0.5 V to 5.5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Package thermal impedance, θJA (see Note 2): DW package 105 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FN package 83 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N package 78 °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. This is a stress rating only, and functional operation of the device at these or any other conditions beyond those indicated in the “recommended operating conditions” section of this specification is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. All voltage values are with respect to GND. 2. The package thermal impedance is calculated in accordance with JESD 51, except for through-hole packages, which use a trace length of zero. |
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