SN74LS138_01 Datasheet, PDF (1/8 Pages) ON Semiconductor – 1-of-8 Decoder/ Demultiplexer

SN74LS138
1-of-8 Decoder/
Demultiplexer
The LSTTL/MSI SN74LS138 is a high speed 1-of-8 Decoder/
Demultiplexer. This device is ideally suited for high speed bipolar
memory chip select address decoding. The multiple input enables
allow parallel expansion to a 1-of-24 decoder using just three LS138
devices or to a 1-of-32 decoder using four LS138s and one inverter.
The LS138 is fabricated with the Schottky barrier diode process for
high speed and is completely compatible with all ON Semiconductor
TTL families.
• Demultiplexing Capability
• Multiple Input Enable for Easy Expansion
• Typical Power Dissipation of 32 mW
• Active Low Mutually Exclusive Outputs
• Input Clamp Diodes Limit High Speed Termination Effects
GUARANTEED OPERATING RANGES
Symbol
Parameter
Min Typ Max Unit
VCC
TA
Supply Voltage
Operating Ambient
Temperature Range
4.75 5.0 5.25
V
0
25
70
°C
IOH
Output Current – High
IOL
Output Current – Low
–0.4 mA
8.0
mA
http://onsemi.com
LOW
POWER
SCHOTTKY
16
1
PLASTIC
N SUFFIX
CASE 648
16
1
SOIC
D SUFFIX
CASE 751B
© Semiconductor Components Industries, LLC, 2001
October, 2001 – Rev. 7
16
1
SOEIAJ
M SUFFIX
CASE 966
ORDERING INFORMATION
Device
Package
Shipping
SN74LS138N
16 Pin DIP 2000 Units/Box
SN74LS138D
SOIC–16
38 Units/Rail
SN74LS138DR2 SOIC–16 2500/Tape & Reel
SN74LS138M
SOEIAJ–16
See Note 1
SN74LS138MEL SOEIAJ–16 See Note 1
1. For ordering information on the EIAJ version of
the SOIC package, please contact your local
ON Semiconductor representative.
1
Publication Order Number:
SN74LS138/D