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SN74HC251DR 数据表(PDF) 6 Page - Texas Instruments |
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SN74HC251DR 数据表(HTML) 6 Page - Texas Instruments |
6 / 22 page SN54HC251, SN74HC251 DATA SELECTORS/MULTIPLEXERS WITH 3STATE OUTPUTS SCLS132E − DECEMBER 1982 − REVISED SEPTEMBER 2003 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 switching characteristics over recommended operating free-air temperature range, CL = 150 pF (unless otherwise noted) (see Figure 1) PARAMETER FROM TO VCC TA = 25°C SN54HC251 SN74HC251 UNIT PARAMETER FROM (INPUT) TO (OUTPUT) VCC MIN TYP MAX MIN MAX MIN MAX UNIT 2 V 72 300 450 375 A, B, or C W or Y 4.5 V 25 60 90 75 tpd A, B, or C W or Y 6 V 22 52 77 65 ns tpd 2 V 59 300 450 375 ns Any D W or Y 4.5 V 21 60 90 75 Any D W or Y 6 V 18 52 77 65 2 V 50 230 340 285 ten OE W or Y 4.5 V 17 46 68 57 ns ten OE W or Y 6 V 15 40 58 50 ns 2 V 45 210 315 265 tt W or Y 4.5 V 17 42 63 53 ns tt W or Y 6 V 13 36 53 45 ns operating characteristics, TA = 25°C PARAMETER TEST CONDITIONS TYP UNIT Cpd Power dissipation capacitance No load 70 pF |
类似零件编号 - SN74HC251DR |
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类似说明 - SN74HC251DR |
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