IN74HC240A
AC ELECTRICAL CHARACTERISTICS(CL=50pF,Input tr=tf=6.0 ns)
VCC
V
Guaranteed Limit
Symbol
Parameter
Unit
25 °C ≤85°C ≤125
to
-55°C
80
°C
tPLH
,
Maximum Propagation Delay, A to YA or 2.0
100
20
120
24
ns
ns
ns
ns
tPHL
B to YB (Figures 1 and 3)
4.5
6.0
16
14
17
20
tPLZ
,
Maximum Propagation Delay, Output 2.0
110
22
140
28
165
33
tPHZ
Enable to YA or YB (Figures 2 and 4)
4.5
6.0
19
24
28
tPZH
,
Maximum Propagation Delay, Output 2.0
110
22
140
28
165
33
tPZL
Enable to YA or YB (Figures 2 and 4)
4.5
6.0
19
24
28
tTLH, tTHL Maximum Output Transition Time, Any 2.0
60
75
90
Output
4.5
6.0
-
12
15
18
(Figures 1 and 3)
Maximum Input Capacitance
10
13
15
CIN
COUT
10
10
10
pF
pF
Maximum
Three-State
Output
-
15
15
15
Capacitance
(Output in High-Impedance State)
Power Dissipation Capacitance (Per
Transceiver Channel)
Typical @25°C,VCC=5.0 V
CPD
Used to determine the no-load dynamic
32
pF
power
consumption:
PD=CPDVCC2f+ICCVCC
Figure 1. Switching Waveforms
Figure 2. Switching Waveforms
4
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