HD74AC538 Datasheet, PDF (4/10 Pages) Hitachi Semiconductor – 1-of-8 Decoder with 3-State Output

HD74AC538
Truth Table
Inputs
Outputs
Function
High impedance
OE₁ OE₂ E₁ E₂ E₃ E₄ A₂ A₁ A₀ O₀ O₁ O₂ O₃ O₄ O₅ O₆ O₇
HXX X X XX X XX Z ZZ Z Z ZZ
Z HX X X XX X XZ Z Z Z Z Z Z Z
Disable
L L H X X X X X X Outputs equal input
L L X HX XX X X
L L X X L XX X X
L LXXXLXXX
Active HIGH output
L L L L H HL L L H L L L L L L L
(P = L)
L L L L H HL L HL H L L L L L L
L L L L H HL H L L L HL L L L L
L L L L H HL H HL L L H L L L L
L L L L H HH L L L L L L H L L L
L L L L H HH L HL L L L L H L L
L L L L H HH H L L L L L L L HL
L L L L H HH H HL L L L L L L H
Active LOW output
L L L L H HL L L L H HH H H HH
(P = L)
L L L L H HL L HH L HH H H HH
L L L L H HL H L H H L H H H HH
L L L L H HL H HH H HL H H HH
L L L L H HH L L H H HH L H HH
L L L L H HH L HH H HH H L HH
L L L L H HH H L H H HH H H L H
L L L L H HH H HH H HH H H HL
H : High Voltage Level
L : Low Voltage Level
X : Immaterial
Z : High Impedance
DC Characteristics (unless otherwise specified)
Item
Symbol Max
Unit
Maximum quiescent supply current I_CC
80
µA
Maximum quiescent supply current I_CC
8.0
µA
Condition
V_IN = V_CC or ground, V_CC = 5.5 V,
Ta = Worst case
V_IN = V_CC or ground, V_CC = 5.5 V,
Ta = 25°C
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