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MC74HCT138A_05 Datasheet, PDF (1/8 Pages) ON Semiconductor – 1−of−8 Decoder/ Demultiplexer with LSTTL Compatible Inputs High−Performance Silicon−Gate CMOS | |||
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MC74HCT138A
1âofâ8 Decoder/
Demultiplexer with LSTTL
Compatible Inputs
HighâPerformance SiliconâGate CMOS
The MC74HCT138A is identical in pinout to the LS138. The
HCT138A may be used as a level converter for interfacing TTL or
NMOS outputs to High Speed CMOS inputs.
The HCT138A decodes a threeâbit Address to oneâofâeight
activeâlot outputs. This device features three Chip Select inputs, two
activeâlow and one activeâhigh to facilitate the demultiplexing,
cascading, and chipâselecting functions. The demultiplexing function
is accomplished by using the Address inputs to select the desired
device output; one of the Chip Selects is used as a data input while the
other Chip Selects are held in their active states.
Features
⢠Output Drive Capability: 10 LSTTL Loads
⢠TTL/NMOS Compatible Input Levels
⢠Outputs Directly Interface to CMOS, NMOS, and TTL
⢠Operating Voltage Range: 4.5 to 5.5 V
⢠Low Input Current: 1.0 mA
⢠In Compliance with the Requirements Defined by JEDEC Standard
No. 7A
⢠Chip Complexity: 122 FETs or 30.5 Equivalent Gates
⢠PbâFree Packages are Available*
16
1
http://onsemi.com
MARKING
DIAGRAMS
16
PDIPâ16
N SUFFIX
CASE 648
MC74HCT138AN
AWLYYWWG
1
16
1
SOICâ16
D SUFFIX
CASE 751B
16
HCT138AG
AWLYWW
1
16
1
TSSOPâ16
DT SUFFIX
CASE 948F
16
HCT
138
ALYW
1
A
WL, L
Y, YY
W, WW
G
= Assembly Location
= Wafer Lot
= Year
= Work Week
= PbâFree Package
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
*For additional information on our PbâFree strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
© Semiconductor Components Industries, LLC, 2005
1
July, 2005 â Rev. 8
Publication Order Number:
MC74HCT138A/D
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