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SN74AS821ANT Datasheet(PDF) 3 Page - Texas Instruments |
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SN74AS821ANT Datasheet(HTML) 3 Page - Texas Instruments |
3 / 6 page SN54AS821A, SN74AS821A 10-BIT BUS-INTERFACE FLIP-FLOPS WITH 3-STATE OUTPUTS SDAS230A – DECEMBER 1983 – REVISED AUGUST 1995 3 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 recommended operating conditions SN54AS821A SN74AS821A 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 0.8 0.8 V IOH High-level output current –24 –24 mA IOL Low-level output current 32 48 mA tw* Pulse duration, CLK high or low 9 8 ns tsu* Setup time, data before CLK ↑ 7 6 ns th* Hold time, data after CLK ↑ 0 0 ns TA Operating free-air temperature –55 125 0 70 °C * On products compliant to MIL-STD-883, Class B, this parameter is based on characterization data but is not production tested. electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS SN54AS821A SN74AS821A UNIT PARAMETER TEST CONDITIONS MIN TYP† MAX MIN TYP† MAX UNIT VIK VCC = 4.5 V, II = – 18 mA – 1.2 – 1.2 V VCC = 4.5 V to 5.5 V, IOH = – 2 mA VCC –2 VCC –2 VOH VCC =4 5V IOH = – 15 mA 2.4 3.2 2.4 3.2 V VCC = 4.5 V IOH = – 24 mA 2 2 VOL VCC =4 5V IOL = 32 mA 0.25 0.5 V VOL VCC = 4.5 V IOL = 48 mA 0.35 0.5 V IOZH VCC = 5.5 V, VO = 2.7 V 50 50 µA IOZL VCC = 5.5 V, VI = 0.4 V –50 –50 µA II VCC = 5.5 V, VI = 7 V 0.1 0.1 mA IIH VCC = 5.5 V, VI = 2.7 V 20 20 µA IIL VCC = 5.5 V, VI = 0.4 V – 0.5 – 0.5 mA IO‡ VCC = 5.5 V, VO = 2.25 V –30 –112 –30 –112 mA Outputs high 55 88 55 88 ICC VCC = 5.5 V Outputs low 68 109 68 109 mA Outputs disabled 70 113 70 113 † All typical values are at VCC = 5 V, TA = 25°C. ‡ The output conditions have been chosen to produce a current that closely approximates one half of the true short-circuit output current, IOS. |
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