HD74HC138 Datasheet, PDF (4/9 Pages) Hitachi Semiconductor – 3-to-8-line Decoder/Demultiplexer

HD74HC138
AC Characteristics (C_L = 50 pF, Input t_r = t_f = 6 ns)
Ta = 25°C
Ta = –40 to
+85°C
Item
Symbol
Propagation delay t_PHL
time
V_CC (V)
2.0
4.5
Min Typ Max Min
— — 175 —
— 17 35 —
Max Unit
220 ns
44
6.0
— — 30 — 37
t _PLH
2.0
— — 150 — 190 ns
4.5
— 16 30 — 38
6.0
— — 26 — 33
t _PHL
2.0
— — 150 — 190 ns
4.5
— 16 30 — 38
6.0
— — 26 — 33
t _PLH
2.0
— — 150 — 190 ns
4.5
— 17 30 — 38
6.0
— — 26 — 33
t _PHL
2.0
— — 175 — 220 ns
4.5
— 15 35 — 44
6.0
— — 30 — 37
t _PLH
2.0
— — 150 — 190 ns
4.5
— 17 30 — 38
6.0
— — 26 — 33
Output rise/fall
t _TLH
time
t _THL
2.0
— — 75 — 95 ns
4.5
— 5 15 — 19
6.0
— — 13 — 16
Input capacitance Cin
—
— 5 10 — 10 pF
Test Conditions
A, B or C to Output
G₁ to Output
G_2A or G_2B to Output
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