HD74AC138_15 Datasheet, PDF (5/12 Pages) Renesas Technology Corp – 1-of-8 Decoder/Demultiplexer

HD74AC138/HD74ACT138
Logic Diagram
A2 A1 A0
E1 E2 E3
O7 O6 O5 O4 O3 O2 O1 O0
Please note that this diagram is provided only for the understanding of logic operations and should not be
used to estimate propagation delays.
Figure a: Expansion of 1-of-32 Decoding
A0
A1
A2
A3
A4
A0 A1 A2
H
123
E
123
A0 A1 A2
E
123
A0 A1 A2
E
Õ04
123
A0 A1 A2
E
O0 O1 O2 O3O4 O5 O6 O7
O0 O1 O2 O3O4 O5 O6 O7
O0 O1 O2 O3O4 O5 O6 O7
O0 O1 O2 O3O4 O5 O6 O7
O0
O31
Absolute Maximum Ratings
Item
Supply voltage
DC input diode current
DC input voltage
DC output diode current
DC output voltage
DC output source or sink current
DC V_CC or ground current per output pin
Storage temperature
Symbol
V_CC
I_IK
V_I
I_OK
V_O
I_O
I_CC, I_GND
Tstg
Ratings
–0.5 to 7
–20
20
–0.5 to Vcc+0.5
–50
50
–0.5 to Vcc+0.5
±50
±50
–65 to +150
Unit
V
mA
mA
V
mA
mA
V
mA
mA
°C
Condition
V_I = –0.5V
V_I = Vcc+0.5V
V_O = –0.5V
V_O = Vcc+0.5V
Rev.2.00, Jul.16.2004, page 3 of 9