SL74HCT245 查看數據表（PDF） - System Logic Semiconductor

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SL74HCT245

Octal 3-State Noninverting Bus Transceiver High-Performance Silicon-Gate CMOS

System Logic Semiconductor 

SL74HCT245

AC ELECTRICAL CHARACTERISTICS(VCC =5.0 V ± 10%, CL=50pF,Input tr=tf=6.0 ns)

Guaranteed Limit

Symbol

Parameter

25 °C to ≤85°C ≤125°C Unit

-55°C

tPLH, tPHL Maximum Propagation Delay, A to B or B to A

(Figures 1 and 3)

22

28

33

ns

tPLZ, tPHZ Maximum Propagation Delay , Direction or Output

32

40

48

ns

Enable to A or B (Figures 2 and 4)

tPZL, tPZH Maximum Propagation Delay , Direction or Output

30

38

45

ns

Enable to A or B (Figures 2 and 4)

tTLH, tTHL Maximum Output Transition Time, Any Output

(Figures 1 and 3)

12

15

18

ns

CIN Maximum Input Capacitance (Pin 1 or Pin 19)

COUT Maximum Three-State I/O Capacitance

(I/O in High-Impedance State)

10

10

10

pF

15

15

15

pF

Power Dissipation Capacitance (Per Enable

Output)

CPD Used to determine the no-load dynamic power

consumption:

PD=CPDVCC2f+ICCVCC

Typical @25°C,VCC=5.0 V

97

pF

Figure 1. Switching Waveforms

SLS

System Logic

Semiconductor

Figure 2. Switching Waveforms

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