IN74HC251 データシートの表示（PDF） - IK Semicon Co., Ltd
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IN74HC251
IK Semicon Co., Ltd
IN74HC251 Datasheet PDF : 6 Pages
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IN74HC251A
AC ELECTRICAL CHARACTERISTICS (CL=50pF,Input tr=tf=6.0 ns)
VCC
Guaranteed Limit
Symbol
Parameter
V 25 °C ≤85°C ≤125°C Unit
to
-55°C
tPLH, tPHL Maximum Propagation Delay, Input D to
Output Y or Y (Figures 1,2 and 5)
2.0 185
230
280
ns
4.5 37
46
56
6.0 31
39
48
tPLH, tPHL Maximum Propagation Delay , Input A to
Output Y or Y (Figures 3 and 5)
2.0 205
255
310
ns
4.5 41
51
62
6.0 35
43
53
tPLZ, tPHZ Maximum Propagation Delay , Output Enable to 2.0 195
245
295
ns
Output Y (Figures 4 and 6)
4.5 39
48
59
6.0 33
42
50
tPZL, tPZH Maximum Propagation Delay , Output Enable to 2.0 145
180
220
ns
Output Y (Figures 4 and 6)
4.5 29
36
44
6.0 25
31
38
tPLZ, tPHZ Maximum Propagation Delay , Output Enable to 2.0 220
275
330
ns
Output Y (Figures 4 and 6)
4.5 44
55
66
6.0 37
47
56
tPZL, tPZH Maximum Propagation Delay , Output Enable to 2.0 150
190
225
ns
Output Y (Figures 4 and 6)
4.5 30
38
45
6.0 26
33
38
tTLH, tTHL Maximum Output Transition Time, Any Output 2.0 75
(Figures 1 and 6)
4.5 15
6.0 13
95
110
ns
19
22
16
19
CIN Maximum Input Capacitance
-
10
10
10
pF
COUT
Maximum Three-State Output Capacitance
(Output in High-Impedance State)
-
15
15
15
pF
Power Dissipation Capacitance (Per Package)
CPD Used to determine the no-load dynamic power
consumption: PD=CPDVCC2f+ICCVCC
Typical @25°C,VCC=5.0 V
36
pF
Figure 1. Switching Waveforms
Figure 2. Switching Waveforms
Rev. 00
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