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SN75ALS056N Datasheet(PDF) 7 Page - Texas Instruments |
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SN75ALS056N Datasheet(HTML) 7 Page - Texas Instruments |
7 / 15 page SN75ALS056, SN75ALS057 TRAPEZOIDAL-WAVEFORM INTERFACE BUS TRANSCEIVERS SLLS028G – AUGUST 1987 – REVISED JUNE 1998 7 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) PARAMETER TEST CONDITIONS SN75ALS057 UNIT PARAMETER TEST CONDITIONS MIN TYP† MAX UNIT VIK Input clamp voltage at Dn, En, TE, or RE II = –18 mA –1.5 V VIT Receiver input threshold voltage at Bn 1.41 1.69 V VOH High-level output voltage at Rn Bn at 1.2 V, RE at 0.8 V, IOH = –400 µA 2.4 V Rn Bn at 2 V, RE at 0.8 V, IOL = 16 mA 0.5 VOL Low-level output voltage Bn Dn at 2 V, En at 2 V, TE at 0.8 V, VL = 2 V, RL = 18.5 Ω, See Figure 1 0.75 1.2 V Dn, En, TE, or RE VI = VCC 40 IIH High-level input current Bn VI = 2 V, VCC = 0 or 5.25 V, Dn at 0.8 V, En at 0.8 V, TE at 0.8 V 100 µA IIL Low-level input current at Dn, En, TE, or RE VI = 0.4 V –400 µA IOS Short-circuit output current at Rn Rn at 0, Bn at 1.2 V, RE at 0.8 V –40 –120 mA ICC Supply current 40 mA CO(B) Driver output capacitance 4.5 pF † Typical values are at VCC = 5 V, TA = 25°C. switching characteristics over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) PARAMETER FROM (INPUT) TO (OUTPUT) TEST CONDITIONS SN75ALS056 DRIVER UNIT (INPUT) (OUTPUT) MIN TYP† MAX tPLH1 Propagation delay time, low-to-high-level output CS Bn An and T/R at 2 V, VL = 2 V, RL118 Ω CL 30 pF 24 ns tPHL1 Propagation delay time, high-to-low-level output CS Bn RL1 = 18 Ω,, CL = 30 pF, RL2 not connected, See Figure 2 20 ns tPLH2 Propagation delay time, low-to-high-level output An Bn CS at 0.8 V, T/R at 2 V, VL = 2 V, RL1 = 18 Ω,, RL2 not connected CL 30 pF 19 ns tPHL2 Propagation delay time high-to-low-level output An Bn RL2 not connected, CL = 30 pF, See Figure 2, 18 ns tPLH3 Propagation delay time, low-to-high-level output T/R Bn VI(An) = 5 V, CS at 0.8 V, RL1 = 18 Ω, CL = 30 pF, RL2 not connected VL =2V 25 ns tPHL3 Propagation delay time, high-to-low-level output T/R Bn RL2 not connected, VL = 2 V, See Figure 3, 35 ns tTLH Transition time, low-to-high-level output An Bn CS at 0.8 V, T/R at 2 V, VL = 2 V, CL = 30 pF, 1 3 11 ns tTHL Transition time, high-to-low-level output An Bn L , L , RL1 = 18 Ω, RL2 not connected, See Figure 2 1 3 6 ns † Typical values are at VCC = 5 V, TA = 25°C |
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