1-of-8 Decoder/Demultiplexer
HD74AC138/HD74ACT138
1-of-8 Decoder/Demultiplexer
REJ03D0248–0200Z (Previous ADE-205-368 (Z))
Rev.2.00 Jul.16.2004
Desc...
Description
HD74AC138/HD74ACT138
1-of-8 Decoder/Demultiplexer
REJ03D0248–0200Z (Previous ADE-205-368 (Z))
Rev.2.00 Jul.16.2004
Description
The HD74AC138/HD74ACT138 is a high-speed 1-of-8 decoder/demultiplexer. This device is ideally suited for highspeed bipolar memory chip select address decoding. The multiple input enables allow parallel expansion to a 1-of-24 decoder using just three HD74AC138/HD74ACT138 devices or a 1-of-32 decoder using four HD74AC138/HD74ACT138 devices and one inverter.
Features
Demultiplexing Capability Multiple Input Enable for Easy Expansion Active LOW Mutually Exclusive Outputs Outputs Source/Sink 24 mA HD74ACT138 has TTL-Compatible Inputs
Ordering Information: Ex. HD74AC138
Part Name
Package Type Package Code Package Abbreviation Taping Abbreviation (Quantity)
HD74AC138AP DIP-16 pin
DP-16E, -16FV P
—
HD74AC138AFPEL SOP-16 pin (JEITA) FP-16DAV
FP
EL (2,000 pcs/reel)
HD74AC138ARPEL SOP-16 pin (JEDEC) FP-16DNV
RP
EL (2,500 pcs/reel)
HD74AC138TELL TSSOP-16 pin
TTP-16DAV
T
ELL(2,000 pcs/reel)
Notes: 1. Please consult the sales office for the above package availability.
2. The packages with lead-free pins are distinguished from the conventional products by adding V at the end of the package code.
Pin Arrangement
A0 1 A1 2 A2 3 E1 4 E2 5 E3 6 O7 7 GND 8
(Top view)
16 VCC 15 O0 14 O1 13 O2 12 O3 11 O4 10 O5 9 O6
Rev.2.00, Jul.16.2004, page 1 of 9
HD74AC138/HD74ACT138
Logic Symbol
A0 A1 A2
E1 E2 E3
O0 O1 O2 O3 O4 O5 O6 O7
Pin Na...
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