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SN74HC640DWR 데이터시트(PDF) 4 Page - Texas Instruments |
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SN74HC640DWR 데이터시트(HTML) 4 Page - Texas Instruments |
4 / 14 page SN54HC640, SN74HC640 OCTAL BUS TRANSCEIVERS WITH 3STATE OUTPUTS SCLS303D − JANUARY 1996 − REVISED AUGUST 2003 4 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 switching characteristics over recommended operating free-air temperature range, CL = 50 pF (unless otherwise noted) (see Figure 1) PARAMETER FROM TO VCC TA = 25°C SN54HC640 SN74HC640 UNIT PARAMETER FROM (INPUT) TO (OUTPUT) VCC MIN TYP MAX MIN MAX MIN MAX UNIT 2 V 29 105 160 130 tpd A or B B or A 4.5 V 10 21 32 26 ns tpd A or B B or A 6 V 8 18 27 22 ns 2 V 109 230 340 290 ten OE A or B 4.5 V 27 46 68 58 ns ten OE A or B 6 V 20 39 58 49 ns 2 V 40 150 225 190 tdis OE A or B 4.5 V 18 30 45 38 ns tdis OE A or B 6 V 16 26 38 32 ns 2 V 20 60 90 75 tt A or B 4.5 V 8 12 18 15 ns tt A or B 6 V 6 10 15 13 ns 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 SN54HC640 SN74HC640 UNIT PARAMETER FROM (INPUT) TO (OUTPUT) VCC MIN TYP MAX MIN MAX MIN MAX UNIT 2 V 44 190 290 235 tpd A or B B or A 4.5 V 14 38 58 47 ns tpd A or B B or A 6 V 11 33 49 41 ns 2 V 124 315 470 395 ten OE A or B 4.5 V 31 63 94 79 ns ten OE A or B 6 V 23 54 80 68 ns 2 V 45 210 315 265 tt A or B 4.5 V 17 42 63 53 ns tt A or B 6 V 13 36 53 45 ns operating characteristics, TA = 25°C PARAMETER TEST CONDITIONS TYP UNIT Cpd Power dissipation capacitance No load 40 pF |
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