HD74HC138_15 Datasheet, PDF (6/10 Pages) Renesas Technology Corp – 3-to-8-line Decoder/Demultiplexer with Address Latch

HD74HC138
Switching Characteristics (C_L = 50 pF, Input t_r = t_f = 6 ns)
Item
Propagation delay
time
Output rise/fall
time
Input capacitance
Symbol V_CC (V)
2.0
t_PHL
4.5
6.0
2.0
t_PLH
4.5
6.0
2.0
t_PHL
4.5
6.0
2.0
t_PLH
4.5
6.0
2.0
t_PHL
4.5
6.0
2.0
t_PLH
4.5
6.0
2.0
t_TLH, t_THL 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
G_2A or G_2B to Y
— 17 30
—
38 ns
— — 26
—
33
— — 75
—
90
— 5 15
—
19 ns
— — 13
—
16
— 5 10
—
10 pF
Test Circuit
Measurement point
C_L*
Note: C_L includes the probe and fig capacitance.
REJ03D0570-0300 Rev.3.00 Mar 25, 2009
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