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SN74AHCT138DGVRE4 데이터시트(PDF) 4 Page - Texas Instruments |
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SN74AHCT138DGVRE4 데이터시트(HTML) 4 Page - Texas Instruments |
4 / 25 page SN54AHCT138, SN74AHCT138 3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS SCLS266M – DECEMBER 1995 – REVISED JULY 2003 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics over recommended operating free-air temperature range (unless otherwise noted) PARAMETER TEST CONDITIONS VCC TA = 25°C SN54AHCT138 SN74AHCT138 UNIT PARAMETER TEST CONDITIONS VCC MIN TYP MAX MIN MAX MIN MAX UNIT VOH IOH = –50 mA 45 V 4.4 4.5 4.4 4.4 V VOH IOH = –8 mA 4.5 V 3.94 3.8 3.8 V VOL IOL = 50 mA 45 V 0.1 0.1 0.1 V VOL IOL = 8 mA 4.5 V 0.36 0.5 0.44 V II VI = 5.5 V or GND 0 V to 5.5 V ±0.1 ±1* ±1 mA ICC VI = VCC or GND, IO = 0 5.5 V 4 40 40 mA ∆ICC† One input at 3.4 V, Other inputs at VCC or GND 5.5 V 1.35 1.5 1.5 mA Ci VI = VCC or GND 5 V 2 10 10 pF * On products compliant to MIL-PRF-38535, this parameter is not production tested at VCC = 0 V. † This is the increase in supply current for each input at one of the specified TTL voltage levels rather than 0 V or VCC. switching characteristics over recommended operating free-air temperature range, VCC = 5 V ± 0.5 V (unless otherwise noted) (see Figure 1) PARAMETER FROM TO LOAD TA = 25°C SN54AHCT138 SN74AHCT138 UNIT PARAMETER (INPUT) (OUTPUT) CAPACITANCE MIN TYP MAX MIN MAX MIN MAX UNIT tPLH ABC Any Y CL =15 pF 7.6* 10.4* 1* 12* 1 12 ns tPHL A, B, C Any Y CL = 15 pF 7.6* 10.4* 1* 12* 1 12 ns tPLH G1 Any Y CL =15 pF 6.6* 9.1* 1* 10.5* 1 10.5 ns tPHL G1 Any Y CL = 15 pF 6.6* 9.1* 1* 10.5* 1 10.5 ns tPLH G2A G2B Any Y CL =15 pF 7* 9.6* 1* 11* 1 11 ns tPHL G2A, G2B Any Y CL = 15 pF 7* 9.6* 1* 11* 1 11 ns tPLH ABC Any Y CL =50 pF 8.1 11.4 1 13 1 13 ns tPHL A, B, C Any Y CL = 50 pF 8.1 11.4 1 13 1 13 ns tPLH G1 Any Y CL =50 pF 7.1 10.1 1 11.5 1 11.5 ns tPHL G1 Any Y CL = 50 pF 7.1 10.1 1 11.5 1 11.5 ns tPLH G2A G2B Any Y CL =50 pF 7.5 10.6 1 12 1 12 ns tPHL G2A, G2B Any Y CL = 50 pF 7.5 10.6 1 12 1 12 ns * On products compliant to MIL-PRF-38535, this parameter is not production tested. operating characteristics, VCC = 5 V, TA = 25°C PARAMETER TEST CONDITIONS TYP UNIT Cpd Power dissipation capacitance No load, f = 1 MHz 14 pF |
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