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SN74AHC244PWRG4 Scheda tecnica(PDF) 4 Page - Texas Instruments |
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SN74AHC244PWRG4 Scheda tecnica(HTML) 4 Page - Texas Instruments |
4 / 19 page SN54AHC244, SN74AHC244 OCTAL BUFFERS/DRIVERS WITH 3-STATE OUTPUTS SCLS226J – OCTOBER 1995 – REVISED JULY 2003 4 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 SN54AHC244 SN74AHC244 UNIT PARAMETER (INPUT) (OUTPUT) CAPACITANCE MIN TYP MAX MIN MAX MIN MAX UNIT tPLH A Y CL =15 pF 5.8* 8.4* 1* 10* 1 10 ns tPHL A Y CL = 15 pF 5.8* 8.4* 1* 10* 1 10 ns tPZH OE Y CL =15 pF 6.6* 10.6* 1* 12.5* 1 12.5 ns tPZL OE Y CL = 15 pF 6.6* 10.6* 1* 12.5* 1 12.5 ns tPHZ OE Y CL =15 pF 5* 9.7* 1* 11* 1 11 ns tPLZ OE Y CL = 15 pF 5* 9.7* 1* 11* 1 11 ns tPLH A Y CL =50 pF 8.3 11.9 1 13.5 1 13.5 ns tPHL A Y CL = 50 pF 8.3 11.9 1 13.5 1 13.5 ns tPZH OE Y CL =50 pF 9.1 14.1 1 16 1 16 ns tPZL OE Y CL = 50 pF 9.1 14.1 1 16 1 16 ns tPHZ OE Y CL =50 pF 10.3 14 1 16 1 16 ns tPLZ OE Y CL = 50 pF 10.3 14 1 16 1 16 ns tsk(o) CL = 50 pF 1.5** 1.5 ns ∗ On products compliant to MIL-PRF-38535, this parameter is not production tested. ∗∗ On products compliant to MIL-PRF-38535, this parameter does not apply. 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 SN54AHC244 SN74AHC244 UNIT PARAMETER (INPUT) (OUTPUT) CAPACITANCE MIN TYP MAX MIN MAX MIN MAX UNIT tPLH A Y CL =15 pF 3.9* 5.5* 1* 6.5* 1 6.5 ns tPHL A Y CL = 15 pF 3.9* 5.5* 1* 6.5* 1 6.5 ns tPZH OE Y CL =15 pF 4.7* 7.3* 1* 8.5* 1 8.5 ns tPZL OE Y CL = 15 pF 4.7* 7.3* 1* 8.5* 1 8.5 ns tPHZ OE Y CL =15 pF 5* 7.2* 1* 8.5* 1 8.5 ns tPLZ OE Y CL = 15 pF 5* 7.2* 1* 8.5* 1 8.5 ns tPLH A Y CL =50 pF 5.4 7.5 1 8.5 1 8.5 ns tPHL A Y CL = 50 pF 5.4 7.5 1 8.5 1 8.5 ns tPZH OE Y CL =50 pF 6.2 9.3 1 10.5 1 10.5 ns tPZL OE Y CL = 50 pF 6.2 9.3 1 10.5 1 10.5 ns tPHZ OE Y CL =50 pF 6.7 9.2 1 10.5 1 10.5 ns tPLZ OE Y CL = 50 pF 6.7 9.2 1 10.5 1 10.5 ns tsk(o) CL = 50 pF 1** 1 ns ∗ On products compliant to MIL-PRF-38535, this parameter is not production tested. ∗∗ On products compliant to MIL-PRF-38535, this parameter does not apply. |
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