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SN74ALS233BDWR Scheda tecnica(PDF) 4 Page - Texas Instruments |
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SN74ALS233BDWR Scheda tecnica(HTML) 4 Page - Texas Instruments |
4 / 18 page SN74ALS233B 16 × 5 ASYNCHRONOUS FIRST-IN, FIRST-OUT MEMORY SCAS253B – MARCH 1990 – REVISED APRIL 1998 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 timing diagram Invalid RST LDCK D0–D4 UNCK Q0–Q4 EMPTY EMPTY+1 FULL FULL–1 W1 W2 W3 W1 W2 W3 W14 W15 W16 Don’t Care Word 1 Word 2 Word 3 Invalid Word 1 Word 2 Word 3 Word 4 Initialize Pointers Load W1 Unload W2 Empty Empty+1 Full–1 Full absolute maximum ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage, VCC 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Input voltage, VI 7 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Voltage applied to a disabled 3-state output 5.5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Package thermal impedance, θJA (see Note 1): DW package 97 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . FN package 83 °C/W . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . N package 67 °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. NOTE 1: 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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