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SN74HC139QPWRQ1 Datasheet(PDF) 4 Page - Texas Instruments |
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SN74HC139QPWRQ1 Datasheet(HTML) 4 Page - Texas Instruments |
4 / 9 page SN74HC139-Q1 DUAL 2-LINE TO 4-LINE DECODER/DEMULTIPLEXER SCLS598B − NOVEMBER 2004 – REVISED APRIL 2008 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 1) PARAMETER FROM (INPUT) TO (OUTPUT) VCC TA = 25°C TA = −40°C TO 125 °C TA = −40°C TO 85 °C UNIT PARAMETER (INPUT) (OUTPUT) VCC MIN TYP MAX MIN MAX MIN MAX UNIT 2 V 47 175 255 220 A or B Y 4.5 V 14 35 51 44 t A or B Y 6 V 12 30 44 38 ns tpd 2 V 39 175 255 220 ns G Y 4.5 V 11 35 51 44 G Y 6 V 10 30 44 38 2 V 38 75 110 95 tt Y 4.5 V 8 15 22 19 ns t 6 V 6 13 19 16 operating characteristics, TA = 25°C PARAMETER TEST CONDITIONS TYP UNIT Cpd Power dissipation capacitance per decoder No load 25 pF PARAMETER MEASUREMENT INFORMATION VOLTAGE WAVEFORM INPUT RISE AND FALL TIMES 50% 50% 10% 10% 90% 90% VCC 0 V tr tf Input VOLTAGE WAVEFORMS PROPAGATION DELAY AND OUTPUT TRANSITION TIMES 50% 50% 50% 10% 10% 90% 90% VCC VOH VOL 0 V tr tf Input In-Phase Output 50% tPLH tPHL 50% 50% 10% 10% 90% 90% VOH VOL tr tf tPHL tPLH Out-of-Phase Output Test Point From Output Under Test CL = 50 pF (see Note A) LOAD CIRCUIT NOTES: A. CL includes probe and test-fixture capacitance. B. Phase relationships between waveforms were chosen arbitrarily. All input pulses are supplied by generators having the following characteristics: PRR ≤ 1 MHz, ZO = 50 Ω, tr = 6 ns, tf = 6 ns. C. The outputs are measured one at a time, with one input transition per measurement. D. tPLH and tPHL are the same as tpd. Figure 1. Load Circuit and Voltage Waveforms |
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