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TC74HC251AF Datasheet(PDF) 6 Page - Toshiba Semiconductor

Part # TC74HC251AF
Description  8-Channel Multiplexer (3-state)
PDF  9 Pages
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Manufacturer  TOSHIBA [Toshiba Semiconductor]
Direct Link  http://www.semicon.toshiba.co.jp/eng
Logo TOSHIBA - Toshiba Semiconductor

TC74HC251AF Datasheet(HTML) 6 Page - Toshiba Semiconductor

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TC74HC251AP/AF
2007-10-01
6
AC Characteristics (CL = 50 pF, input: tr = tf = 6 ns)
Test Condition
Ta
= 25°C
Ta
= −40~85°C
Characteristics
Symbol
VCC
(V)
Min
Typ.
Max
Min
Max
Unit
Output transition time
tTLH
tTHL
⎯
2.0
4.5
6.0
⎯
⎯
⎯
30
8
7
75
15
13
⎯
⎯
⎯
95
19
16
ns
Propagation delay
time
(D-Y)
tpLH
tpHL
⎯
2.0
4.5
6.0
⎯
⎯
⎯
65
17
14
140
28
24
⎯
⎯
⎯
175
35
30
ns
Propagation delay
time
(D-W)
tpLH
tpHL
⎯
2.0
4.5
6.0
⎯
⎯
⎯
70
18
15
140
28
24
⎯
⎯
⎯
175
35
30
ns
Propagation delay
time
(A, B, C-Y)
tpLH
tpHL
⎯
2.0
4.5
6.0
⎯
⎯
⎯
80
23
19
180
36
31
⎯
⎯
⎯
225
45
38
ns
Propagation delay
time
(A, B, C-W)
tpLH
tpHL
⎯
2.0
4.5
6.0
⎯
⎯
⎯
80
23
19
180
36
31
⎯
⎯
⎯
225
45
38
ns
3-state output enable
time
tpZL
tpZH
⎯
2.0
4.5
6.0
⎯
⎯
⎯
40
13
10
105
21
19
⎯
⎯
⎯
130
26
22
ns
3-state output disable
time
tpLZ
tpHZ
⎯
2.0
4.5
6.0
⎯
⎯
⎯
25
13
11
105
21
19
⎯
⎯
⎯
130
26
22
ns
Input capacitance
CIN
⎯
⎯
5
10
⎯
10
pF
Power dissipation
capacitance
CPD
(Note)
⎯
⎯
69
⎯
⎯
⎯
pF
Note:
CPD is defined as the value of the internal equivalent capacitance which is calculated from the operating
current consumption without load.
Average operating current can be obtained by the equation:
ICC (opr) = CPD･VCC･fIN + ICC



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