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HD74HC138TE データシートの表示(PDF) - Renesas Electronics

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HD74HC138TE Datasheet PDF : 10 Pages
1 2 3 4 5 6 7 8 9 10
HD74HC138
Switching Characteristics (CL = 50 pF, Input tr = tf = 6 ns)
Item
Propagation delay
time
Output rise/fall
time
Input capacitance
Symbol VCC (V)
2.0
tPHL
4.5
6.0
2.0
tPLH
4.5
6.0
2.0
tPHL
4.5
6.0
2.0
tPLH
4.5
6.0
2.0
tPHL
4.5
6.0
2.0
tPLH
4.5
6.0
2.0
tTLH, tTHL 4.5
6.0
Cin
Ta = 25°C
Ta = –40 to +85°C Unit
Min Typ Max Min Max
Test Conditions
— — 175 —
220
— 17 35
44 ns
— — 30
37
— — 150 —
190
A, B or C to Y
— 16 30
38 ns
— — 26
33
— — 150 —
190
— 16 30
38 ns
— — 26
33
— — 150 —
190
G1 to Y
— 17 30
38 ns
— — 26
33
— — 175 —
220
— 15 35
44 ns
— — 30
37
— — 150 —
190
G2A or G2B to Y
— 17 30
38 ns
— — 26
33
— — 75
90
— 5 15
19 ns
— — 13
16
— 5 10
10 pF
Test Circuit
Measurement point
CL*
Note: CL includes the probe and fig capacitance.
REJ03D0570-0300 Rev.3.00 Mar 25, 2009
Page 4 of 7

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