IN74HC245 데이터 시트보기 (PDF) - Integral Corp.
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IN74HC245 Datasheet PDF : 5 Pages
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IN74HC245A
AC ELECTRICAL CHARACTERISTICS(CL=50pF,Input tr=tf=6.0 ns)
Symbol
Parameter
tPLH, tPHL Maximum Propagation Delay, A to B or B
to A (Figures 1 and 3)
tPLZ, tPHZ Maximum Propagation Delay , Direction or
Output Enable to A or B (Figures 2 and 4)
tPZL, tPZH Maximum Propagation Delay , Direction or
Output Enable to A or B (Figures 2 and 4)
tTLH, tTHL Maximum Output Transition Time, Any Output
(Figures 1 and 3)
CIN
COUT
Maximum Input Capacitance (Pin 1 or Pin 19)
Maximum Three-State I/O Capacitance
(I/O in High-Impedance State)
VCC
Guaranteed Limit
V 25 °C ≤85°C ≤125°C Unit
to
-55°C
2.0 75
4.5 15
6.0 13
95
110
ns
19
22
16
19
2.0 110
140
165
ns
4.5 22
28
33
6.0 19
24
28
2.0 110
140
165
ns
4.5 22
28
33
6.0 19
24
28
2.0 60
75
90
ns
4.5 12
15
18
6.0 10
13
15
-
10
10
10
pF
-
15
15
15
pF
Power Dissipation Capacitance (Per Transceiver
Channel)
Typical @25°C,VCC=5.0 V
CPD Used to determine the no-load dynamic power
consumption:
PD=CPDVCC2f+ICCVCC
40
pF
Figure 1. Switching Waveforms
304
Figure 2. Switching Waveforms
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