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CD74HCT45111 데이터시트(PDF) 8 Page - Texas Instruments |
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CD74HCT45111 데이터시트(HTML) 8 Page - Texas Instruments |
8 / 22 page CD54HC4511, CD74HC4511, CD74HCT4511 BCDTO7 SEGMENT LATCH/DECODER/DRIVERS SCHS279D − DECEMBER 1998 − REVISED OCTOBER 2003 8 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 CD74HCT4511 timing requirements over recommended operating free-air temperature range VCC = 4.5 V (unless otherwise noted) (see Figure 2) TA = 25°C TA = −55°C TO 125 °C TA = −40°C TO 85 °C UNIT MIN MAX MIN MAX MIN MAX UNIT tw Pulse duration, LE low 16 24 20 ns tsu Setup time, BCD inputs before LE ↑ 16 24 20 ns th Hold time, BCD inputs before LE ↑ 5 5 5 ns CD74HCT4511 switching characteristics over recommended operating free-air temperature range (unless otherwise noted) (see Figure 2) PARAMETER FROM (INPUT) TO (OUTPUT) LOAD CAPACITANCE VCC TA = 25°C TA = −55°C TO 125 °C TA = −40°C TO 85 °C UNIT PARAMETER (INPUT) (OUTPUT) CAPACITANCE VCC MIN TYP MAX MIN MAX MIN MAX UNIT Dn Output CL = 50 pF 4.5 V 60 90 75 Dn Output CL = 15 pF 5 V 25 LE Output CL = 50 pF 4.5 V 54 81 68 tpd LE Output CL = 15 pF 5 V 23 ns tpd BL Output CL = 50 pF 4.5 V 44 66 55 ns BL Output CL = 15 pF 5 V 18 LT Output CL = 50 pF 4.5 V 33 50 41 LT Output CL = 15 pF 5 V 13 tt Any CL = 50 pF 4.5 V 15 22 19 ns operating characteristics, VCC = 5 V, TA = 25°C PARAMETER TYP UNIT Cpd† Power dissipation capacitance ’HC4511 114 pF Cpd† Power dissipation capacitance CD74HCT4511 110 pF † Cpd is used to determine the dynamic power consumption, per package. PD = Cpd VCC2 fi + ∑ CL VCC2 fo where: fi = input frequency fo = output frequency CL = output load capacitance VCC = supply voltage |
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