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SN74LS273 Datasheet(PDF) 5 Page - Texas Instruments |
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SN74LS273 Datasheet(HTML) 5 Page - Texas Instruments |
5 / 8 page SN54273, SN54LS273, SN74273, SN74LS273 OCTAL D-TYPE FLIP-FLOP WITH CLEAR SDLS090 – OCTOBER 1976 – REVISED MARCH 1988 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS† SN54LS273 SN74LS273 UNIT PARAMETER TEST CONDITIONS† MIN TYP‡ MAX MIN TYP‡ MAX UNIT VIH High-level input voltage 2 2 V VIL Low-level input voltage 0.7 0.8 V VIK Input clamp voltage VCC = MIN, II = – 18 mA –1.5 –1.5 V VOH High-level output voltage VCC = MIN, VIL = VILmax, VIH = 2 V, IOH = – 400 µA 2.5 3.4 2.7 3.4 V VOL Low level output voltage VCC = MIN, VIH = 2 V, IOL = 4 mA 0.25 0.4 0.25 0.4 V VOL Low-level output voltage CC , VIL = VILmax, IH , IOL = 8 mA 0.35 0.5 V II Input current at maximum input voltage VCC = MAX, VI = 7 V 0.1 0.1 mA IIH High-level input current VCC = MAX, VI = 2.7 V 20 20 µA IIL Low-level input current VCC = MAX, VI = 0.4 V – 0.4 – 0.4 mA IOS Short-circuit output current§ VCC = MAX –20 – 100 –20 – 100 mA ICC Supply current VCC = MAX, See Note 2 17 27 17 27 mA † For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. ‡ All typical values are at VCC = 5 V, TA = 25°C. § Not more than one output should be shorted at a time and duration of short circuit should not exceed one second. NOTE 2: With all outputs open and 4.5 V applied to all data and clear inputs, ICC is measured after a momentary ground, then 4.5 V, is applied to clock. switching characteristics, VCC = 5 V, TA = 25°C PARAMETER TEST CONDITIONS MIN TYP MAX UNIT fmax Maximum clock frequency C 30 40 MHz tPHL Propagation delay time, high-to-low-level output from clear CL = 15 pF, RL =2kΩ 18 27 ns tPLH Propagation delay time, low-to-high-level output from clock RL = 2 kΩ, See Note 3 17 27 ns tPHL Propagation delay time, high-to-low-level output from clock See Note 3 18 27 ns NOTE 3: Load circuits and voltage waveforms are shown in Section 1. |
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