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SN74LS245NSRG4 Datasheet(PDF) 4 Page - Texas Instruments |
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SN74LS245NSRG4 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 15 page SN54LS245, SN74LS245 OCTAL BUS TRANSCEIVERS WITH 3-STATE OUTPUTS SDLS146A – OCTOBER 1976 – REVISED FEBRUARY 2002 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS† SN54LS245 SN74LS245 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 Hysteresis (VT+ – VT–) A or B VCC = MIN 0.2 0.4 0.2 0.4 V VOH High level output voltage VCC = MIN, VIH 2V IOH = –3 mA 2.4 3.4 2.4 3.4 V VOH High-level output voltage VIH = 2 V, VIL = VIL(max) IOH = MAX 2 2 V VOL Low level output voltage VCC = MIN, VIH 2V IOL = 12 mA 0.4 0.4 V VOL Low-level output voltage VIH = 2 V, VIL = VIL(max) IOL = 24 mA 0.5 V IOZH Off-state output current, high-level voltage applied VCC = MAX, OE at 2 V VO = 2.7 V 20 20 µA IOZL Off-state output current, low-level voltage applied VCC = MAX, OE at 2 V VO = 0.4 V –200 –200 µA II Input current at maximum input A or B VCC = MAX VI = 5.5 V 0.1 0.1 mA II maximum input voltage DIR or OE VCC = MAX VI = 7 V 0.1 0.1 mA IIH High-level input current VCC = MAX, VIH = 2.7 V 20 20 µA IIL Low-level input current VCC = MAX, VIL = 0.4 V –0.2 –0.2 mA IOS Short-circuit output current§ VCC = MAX –40 –225 40 –225 mA Total, outputs high 48 70 48 70 ICC Supply current Total, outputs low VCC = MAX Outputs open 62 90 62 90 mA Outputs at high Z 64 95 64 95 † For conditions shown as MIN or MAX, use the appropriate values 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 the short circuit should not exceed one second. switching characteristics, VCC = 5 V, TA = 25°C (see Figure 1) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT tPLH Propagation delay time, low- to high-level output C45 pF R 667 W 8 12 ns tPHL Propagation delay time high to low level output CL = 45 pF, RL = 667 W 8 12 ns tPHL Propagation delay time, high- to low-level output 8 12 tPZL Output enable time to low level CL =45 pF RL = 667 W 27 40 ns tPZH Output enable time to high level CL = 45 pF, RL = 667 W 25 40 ns tPLZ Output disable time from low level CL =5 pF RL = 667 W 15 25 ns tPHZ Output disable time from high level CL = 5 pF, RL = 667 W 15 28 ns |
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