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SN74AHC138N Datasheet(PDF) 5 Page - Texas Instruments |
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SN74AHC138N Datasheet(HTML) 5 Page - Texas Instruments |
5 / 9 page SN54AHC138, SN74AHC138 3-LINE TO 8-LINE DECODERS/DEMULTIPLEXERS SCLS258J – DECEMBER 1995 – REVISED FEBRUARY 2002 5 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 switching characteristics over recommended operating free-air temperature range, VCC = 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1) PARAMETER FROM TO LOAD TA = 25°C SN54AHC138 SN74AHC138 UNIT PARAMETER (INPUT) (OUTPUT) CAPACITANCE MIN TYP MAX MIN MAX MIN MAX UNIT tPLH ABC Any Y CL =15 pF 8.2* 11.4* 1* 13* 1 13 ns tPHL A, B, C Any Y CL = 15 pF 8.2* 11.4* 1* 13* 1 13 ns tPLH G1 Any Y CL =15 pF 8.1* 12.8* 1* 15* 1 15 ns tPHL G1 Any Y CL = 15 pF 8.1* 12.8* 1* 15* 1 15 ns tPLH G2A G2B Any Y CL =15 pF 8.2* 11.4* 1* 13.5* 1 13.5 ns tPHL G2A, G2B Any Y CL = 15 pF 8.2* 11.4* 1* 13.5* 1 13.5 ns tPLH ABC Any Y CL =50 pF 10 15.8 1 18 1 18 ns tPHL A, B, C Any Y CL = 50 pF 10 15.8 1 18 1 18 ns tPLH G1 Any Y CL =50 pF 10.6 16.3 1 18.5 1 18.5 ns tPHL G1 Any Y CL = 50 pF 10.6 16.3 1 18.5 1 18.5 ns tPLH G2A G2B Any Y CL =50 pF 10.7 14.9 1 17 1 17 ns tPHL G2A, G2B Any Y CL = 50 pF 10.7 14.9 1 17 1 17 ns * On products compliant to MIL-PRF-38535, this parameter is not production tested. 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 SN54AHC138 SN74AHC138 UNIT PARAMETER (INPUT) (OUTPUT) CAPACITANCE MIN TYP MAX MIN MAX MIN MAX UNIT tPLH ABC Any Y CL =15 pF 5.7* 8.1* 1* 9.5* 1 9.5 ns tPHL A, B, C Any Y CL = 15 pF 5.7* 8.1* 1* 9.5* 1 9.5 ns tPLH G1 Any Y CL =15 pF 5.6* 8.1* 1* 9.5* 1 9.5 ns tPHL G1 Any Y CL = 15 pF 5.6* 8.1* 1* 9.5* 1 9.5 ns tPLH G2A G2B Any Y CL =15 pF 5.8* 8.1* 1* 9.5* 1 9.5 ns tPHL G2A, G2B Any Y CL = 15 pF 5.8* 8.1* 1* 9.5* 1 9.5 ns tPLH ABC Any Y CL =50 pF 7.2 10.1 1 11.5 1 11.5 ns tPHL A, B, C Any Y CL = 50 pF 7.2 10.1 1 11.5 1 11.5 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 7.3 10.1 1 11.5 1 11.5 ns tPHL G2A, G2B Any Y CL = 50 pF 7.3 10.1 1 11.5 1 11.5 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 13 pF |
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