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HD74HCT138 Datasheet, PDF (3/8 Pages) Hitachi Semiconductor – 3-to-8-line Decoder/Demultiplexer | |||
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HD74HCT138
DC Characteristics
Ta = 25°C
Ta = â40 to
+85°C
Test Conditions
Item
Input voltage
Symbol Min Typ Max Min
VIH
2.0 â â 2.0
Max
â
Unit
V
VCC (V)
4.5 to
5.5
VIL
â â 0.8 â 0.8 V 4.5 to
5.5
Output voltage
VOH
VOL
Input current
Iin
Quiescent supply ICC
current
4.4 â â 4.4 â V 4.5
4.18 â â 4.13 â
4.5
â â 0.1 â 0.1 V 4.5
â â 0.26 â 0.33
4.5
â â ±0.1 â ±1.0 µA 5.5
â â 4.0 â 40 µA 5.5
Vin = VIH or VIL IOH = â20 µA
IOH = â4 mA
Vin = VIH or VIL IOL = 20 µA
IOL = 4 mA
Vin = VCC or GND
Vin = VCC or GND, Iout = 0 µA
AC Characteristics (CL = 50 pF, Input tr = tf = 6 ns)
Item
Symbol
Propagation delay tPHL
time
t PLH
t PHL
t PLH
t PHL
t PLH
Output rise/fall
t TLH
time
t THL
Input capacitance Cin
Ta = 25°C
Ta = â40 to
+85°C
Min Typ Max Min Max
â 18 35 â 44
â 19 30 â 38
â 17 30 â 38
â 17 30 â 38
â 17 35 â 44
â 17 30 â 38
â 5 15 â 19
â 5 10 â 10
Unit
ns
ns
ns
ns
ns
ns
ns
pF
Test Conditions
VCC (V)
4.5
A, B or C to output
4.5
4.5
G1 to output
4.5
4.5
G2A or G2B to output
4.5
4.5
â
3
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