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參數資料
| 型號： | HC253 |
| 廠商： | System Logic Semiconductor Co., Ltd. |
| 英文描述： | PWM Controller; Mounting Type:Through Hole; Package/Case:18-DIP |
| 中文描述： | 雙路4輸入數據選擇器/復用器具有三態Otputs |
| 文件頁數： | 4/5頁 |
| 文件大小： | 49K |
| 代理商： | HC253 |
SL74HC253
S ystem Logic
Semiconductor
SLS
AC ELECTRICAL CHARACTERISTICS
(C
L
=50pF,Input t
r
=t
f
=6.0 ns)
V
CC
Guaranteed Limit
Symbol
Parameter
V
25
°
C to
-55
°
C
≤
85
°
C
≤
125
°
C
Unit
t
PLH
, t
PHL
Maximum Propagation Delay, Data to
Output Y (Figures 1 and 3)
2.0
4.5
6.0
140
28
24
175
35
30
210
42
36
ns
t
PLH
, t
PHL
Maximum Propagation Delay , Address to
Output Y (Figures 1 and 3)
2.0
4.5
6.0
175
35
30
220
44
37
265
53
45
ns
t
PLZ
, t
PHZ
Maximum Propagation Delay ,Output Enable to
Output Y (Figures 2 and 4)
2.0
4.5
6.0
150
30
26
190
38
33
225
45
38
ns
t
PZL
, t
PZH
Maximum Propagation Delay ,Output Enable to
Output Y (Figures 2 and 4)
2.0
4.5
6.0
100
20
17
125
25
21
150
30
26
ns
t
TLH
, t
THL
Maximum Output Transition Time, Any Output
(Figures 1 and 3)
2.0
4.5
6.0
75
15
13
95
19
16
110
22
19
ns
C
IN
Maximum Input Capacitance
-
10
10
10
pF
C
OUT
Maximum Three-State Output Capacitance
(Output in High-Impedance State)
-
15
15
15
pF
Power Dissipation Capacitance (Per Muliplexer)
Typical @25
°
C,V
CC
=5.0 V
C
PD
Used to determine the no-load dynamic power
consumption:
P
D
=C
PD
V
CC
2
f+I
CC
V
CC
31
pF
Figure 1. Switching Waveforms
Figure 2. Switching Waveforms
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