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74ACT11253N Datasheet(PDF) 4 Page - Texas Instruments |
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74ACT11253N Datasheet(HTML) 4 Page - Texas Instruments |
4 / 5 page 54ACT11253, 74ACT11253 DUAL 1-OF-4 DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS SCAS040A – D3110, MARCH 1988 – REVISED APRIL 1993 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 2–4 switching characteristics over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see Figure 1) PARAMETER FROM TO TA = 25°C 54ACT11253 74ACT11253 UNIT PARAMETER (INPUT) (OUTPUT) MIN TYP MAX MIN MAX MIN MAX UNIT tPLH AorB Any Y 1.5 6.8 9.8 1.5 11.8 1.5 11 ns tPHL A or B Any Y 1.5 9.1 12.6 1.5 15.5 1.5 14.3 ns tPLH Data (Any C) Y 1.5 5.7 7.4 1.5 8.9 1.5 8.3 ns tPHL Data (Any C) Y 1.5 7.2 10.5 1.5 12.5 1.5 11.7 ns tPZH G Y 1.5 5 7.6 1.5 9 1.5 8.5 ns tPZL G Y 1.5 4.8 7.3 1.5 8.6 1.5 8.1 ns tPHZ G Y 1.5 6.4 8.6 1.5 9.5 1.5 9.2 ns tPLZ G Y 1.5 5.9 7.4 1.5 8.1 1.5 7.8 ns operating characteristics, VCC = 5 V, TA = 25°C PARAMETER TEST CONDITIONS TYP UNIT C d Power dissipation capacitance per multiplexer Outputs enabled CL =50 pF f=1MHz 42 pF Cpd Power dissipation capacitance per multiplexer Outputs disabled CL = 50 pF, f = 1 MHz 18 pF PARAMETER MEASUREMENT INFORMATION From Output Under Test CL = 50 pF (see Note A) LOAD CIRCUIT S1 2 × VCC 500 Ω 500 Ω tPLH tPHL Output Control (low-level enabling) Output Waveform 1 S1 at 2 × VCC (see Note C) Output Waveform 2 S1 at GND (see Note C) VOL VOH tPZL tPZH tPLZ tPHZ 1.5 V 1.5 V 1.5 V 1.5 V [ VCC 3 V 0 V 50% VCC 50% VCC VOH VOL 0 V 50% VCC 20% VCC 50% VCC 80% VCC [ 0 V 3 V GND Open Input (see Note B) Output VOLTAGE WAVEFORMS VOLTAGE WAVEFORMS tPLH/tPHL tPLZ/tPZL tPHZ/tPZH Open 2 × VCC GND TEST S1 NOTES: A. CL includes probe and jig capacitance. B. All input pulses are supplied by generators having the following characteristics: PRR ≤ 10 MHz, ZO = 50 Ω, tr = 3 ns, tf = 3 ns. C. Waveform 1 is for an output with internal conditions such that the output is low except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is high except when disabled by the output control. D. The outputs are measured one at a time with one input transition per measurement. Figure 1. Load Circuit and Voltage Waveforms |
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