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Description
3-to-8 line decoder, demultiplexer
inverting - Description: 3-to-8 Line Decoder/Demultiplexer
Inverting
TTL Enabled
Logic switching levels: TTL
Number of pins: 16
Output drive capability: +/- 4 mA
Power dissipation considerations: Low Power
Propagation delay: 17 ns
Voltage: 4.5-5.5V
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FEATURES
● Demultiplexing capability
● Multiple input enable for easy expansion
● Ideal for memory chip select decoding
● Active Low mutually exclusive outputs
● Output capability: standard
● ICC category: MSI
GENERAL DESCRIPTION
The 74HC/HCT138 are high-speed Si-gate CMOS devices and are pin compatible with low power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no.7A.
The 74HC/HCT138 decoders accept three binary weighted address inputs(A0,A1,A2) and when enabled,provide 8 mutually exclusive active Low outputs (Y0 to Y7).
The“138" features three enable inputs: two active Low (E1and E2) and one active HIGH(E3).Every output will be HIGH unless E1 and E2 are LOW and E3 is HIGH.
This multiple enable function allows easy parallel expansion of the“138" to a 1-of-32 (5 lines to 32 lines) decoder with just four“138”ICs and one inverter.
The”138" can be used as an eight output demultiplexer by using one of the active LOW enable inputs as the data input and the remaining enable inputs as strobes. Unused enable inputs must be permanently tied to their appropriate active HlGH or LOW state.
The "138" is identical to the "238" but has inverting outputs.
Preview of the first 3 pages of the data sheet
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Same catergory
6 buyer reviews from Philippines
Kim Benedict Chua
Length of registration:3 years
Got it in very good packaging. Will test and hopefully it will work well. Thank you!
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03/17/2021
Ramon R. Reyes
Length of registration:12 years
works good! fm DU1FV
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03/27/2017
Norman Tayo
Length of registration:10 years
THANK YOU...GOT THE ITEM QUICKLY.
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02/06/2017
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74HCT138N
74HCT138N has several brands around the world that may have alternate names for 74HCT138N due to regional differences or acquisition. 74HCT138N may also be known as the following names:
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Stock Status: 10000
Minimum: 3
Total Price:
Unit Price:50.80018
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