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SN74AHC257D Datasheet(PDF) 5 Page - Texas Instruments |
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SN74AHC257D Datasheet(HTML) 5 Page - Texas Instruments |
5 / 9 page SN54AHC257, SN74AHC257 QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS WITH 3-STATE OUTPUTS SCLS349C – MAY 1996 – REVISED JULY 1998 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) FROM TO LOAD SN54AHC257 PARAMETER FROM (INPUT) TO (OUTPUT) LOAD CAPACITANCE TA = 25°C MIN MAX UNIT (INPUT) (OUTPUT) CAPACITANCE MIN TYP MAX MIN MAX tPLH* AorB Y CL =15 pF ns tPHL* A or B Y CL = 15 pF ns tPLH* A/B Y CL =15 pF ns tPHL* A/B Y CL = 15 pF ns tPZH* OE Y CL =15 pF ns tPZL* OE Y CL = 15 pF ns tPHZ* OE Y CL =15 pF ns tPLZ* OE Y CL = 15 pF ns tPLH AorB Y CL =50 pF ns tPHL A or B Y CL = 50 pF ns tPLH A/B Y CL =50 pF ns tPHL A/B Y CL = 50 pF ns tPZH OE Y CL =50 pF ns tPZL OE Y CL = 50 pF ns tPHZ OE Y CL =50 pF ns tPLZ OE Y CL = 50 pF ns * On products compliant to MIL-PRF-38535, this parameter is not production tested. switching characteristics over recommended operating free-air temperature range, VCC = 3.3 V ± 0.3 V (unless otherwise noted) (see Figure 1) FROM TO LOAD SN74AHC257 PARAMETER FROM (INPUT) TO (OUTPUT) LOAD CAPACITANCE TA = 25°C MIN MAX UNIT (INPUT) (OUTPUT) CAPACITANCE MIN TYP MAX MIN MAX tPLH AorB Y CL =15 pF ns tPHL A or B Y CL = 15 pF ns tPLH A/B Y CL =15 pF ns tPHL A/B Y CL = 15 pF ns tPZH OE Y CL =15 pF ns tPZL OE Y CL = 15 pF ns tPHZ OE Y CL =15 pF ns tPLZ OE Y CL = 15 pF ns tPLH AorB Y CL =50 pF ns tPHL A or B Y CL = 50 pF ns tPLH A/B Y CL =50 pF ns tPHL A/B Y CL = 50 pF ns tPZH OE Y CL =50 pF ns tPZL OE Y CL = 50 pF ns tPHZ OE Y CL =50 pF ns tPLZ OE Y CL = 50 pF ns |
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