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SL74HC257 Datasheet(HTML) 4 Page - System Logic Semiconductor

Part No. SL74HC257
Description  Quad 2-Input Data Selector/Multiplexer with 3-State Outputs
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Maker  SLS [System Logic Semiconductor]
Homepage  http://www.slsemicon.co.kr/e_index.htm
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SL74HC257 Datasheet(HTML) 4 Page - System Logic Semiconductor

   
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SL74HC257
System Logic
Semiconductor
SLS
AC ELECTRICAL CHARACTERISTICS(C
L=50pF,Input t r=tf=6.0 ns)
VCC
Guaranteed Limit
Symbol
Parameter
V
25
°C to
-55
°C
≤85°C
≤125°C
Unit
tPLH, tPHL
Maximum Propagation Delay, Nibble A or B to
Output Y (Figures 1and 4)
2.0
4.5
6.0
100
20
17
125
25
21
150
30
26
ns
tPLH, tPHL
Maximum Propagation Delay , Select to
Output Y (Figures 2 and 4)
2.0
4.5
6.0
100
20
17
125
25
21
150
30
26
ns
tPLZ, tPHZ
Maximum Propagation Delay , Output Enable to
Output Y (Figures 3 and 5)
2.0
4.5
6.0
150
30
26
190
38
33
225
45
38
ns
tPZL, tPZH
Maximum Propagation Delay , Output Enable to
Output Y (Figures 3 and 5)
2.0
4.5
6.0
150
30
26
190
38
33
225
45
38
ns
tTLH, tTHL
Maximum Output Transition Time, Any Output
(Figures 1 and 4)
2.0
4.5
6.0
60
12
10
75
15
13
90
18
15
ns
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)
Typical @25
°C,V
CC=5.0 V
CPD
Used to determine the no-load dynamic power
consumption:
PD=CPDVCC
2f+I
CCVCC
39
pF
Figure 1. Switching Waveforms
Figure 2. Switching Waveforms


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