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SN74AS874DW Datasheet(PDF) 6 Page - Texas Instruments |
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SN74AS874DW Datasheet(HTML) 6 Page - Texas Instruments |
6 / 9 page SN54ALS874B, SN74ALS874B, SN74ALS876A SN74AS874, SN74AS876 DUAL 4-BIT D-TYPE EDGE-TRIGGERED FLIP-FLOPS SDAS061C – APRIL 1982 – REVISED JANUARY 1995 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 recommended operating conditions SN74AS874 SN74AS876 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 –15 –15 mA IOL Low-level output current 48 48 mA fclock Clock frequency 0 125 0 80 MHz PRE or CLR low 2 4.5 tw Pulse duration CLK high 3 6.2 ns CLK low 4 6.2 t Set p time before CLK ↑ Data 2 4.5 ns tsu Setup time before CLK ↑ PRE or CLR inactive 4 5 ns th Hold time, data after CLK ↑ 1 2 ns TA Operating free-air temperature 0 70 0 70 °C electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS SN74AS874 SN74AS876 UNIT MIN TYP† MAX VIK VCC = 4.5 V, II = – 18 mA – 1.2 V VOH VCC = 4.5 V to 5.5 V, IOH = – 2 mA VCC –2 V VOH VCC = 4.5 V, IOH = – 15 mA 2.4 3.3 V VOL VCC = 4.5 V, IOL = 48 mA 0.35 0.5 V IOZH VCC = 5.5 V, VO = 2.7 V 50 µA IOZL VCC = 5.5 V, VO = 0.4 V –50 µA II VCC = 5.5 V, VI = 7 V 0.1 mA IIH VCC = 5.5 V, VI = 2.7 V 20 µA IIL D VCC =5 5V VI =0 4V –2 mA IIL All others VCC = 5.5 V, VI = 0.4 V – 0.5 mA IO‡ VCC = 5.5 V, VO = 2.25 V –30 –112 mA Outputs high 82 133 SN74AS874 VCC = 5.5 V Outputs low 92 149 ICC Outputs disabled 100 160 mA ICC Outputs high 88 142 mA SN74AS876 VCC = 5.5 V Outputs low 94 150 Outputs disabled 100 160 † 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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