SN74HC138N - 

Decoder / Demultiplexer, HC Family, 8 Output, 5.2 mA, 2 V to 6 V, DIP-16

SN74HC138N - Decoder / Demultiplexer, HC Family, 8 Output, 5.2 mA, 2 V to 6 V, DIP-16

The actual product may differ from image shown

Manufacturer Part No:
Newark Part No.:
Technical Datasheet:
See all Technical Docs

Product Overview

The SN74HC138N is a 3-line to 8-line Decoder/Demultiplexer, designed to be used in high-performance memory-decoding or data-routing applications requiring very short propagation delay times. In high-performance memory systems, these decoders can be used to minimize the effects of system decoding. When employed with high-speed memories utilizing a fast enable circuit, the delay times of these decoders and the enable time of the memory are usually less than the typical access time of the memory. This means that the effective system delay introduced by the decoders is negligible. The conditions at the binary-select inputs at the three enable inputs select one of eight output lines. Two active-low and one active-high enable inputs reduce the need for external gates or inverters when expanding. A 24-line decoder can be implemented without external inverters and a 32-line decoder requires only one inverter. An enable input can be used as a data input for demultiplexing applications.
  • Targeted Specifically for High-speed Memory Decoders and Data-transmission Systems
  • Outputs Can Drive up to 10 LSTTL Loads
  • Low-power Consumption, 80µA Maximum ICC
  • 15ns Typical Propagation Delay Time
  • ±4mA Output Drive at 5V
  • Low Input Current of 1µA Maximum
  • Incorporate Three Enable Inputs to Simplify Cascading and/or Data Reception


Defence, Military & Aerospace

Product Information

Decoder / Demultiplexer
Find similar products Choose and modify the attributes above to find similar products.


Compare Selected
Manufacturer Part Number
Newark Part No.
Manufacturer / Description
Price For


1000+ $0.172 5000+ $0.147 10000+ $0.136 More Less

Associated Products

Compare Selected

Related Searches

US continental orders over $49 and under 50 pounds may qualify for free ground shipping. Click the link for the full Terms and Conditions of the offer.

6,195 In stock

for same day shipping

see cut-off times
Check stock and lead times
More stock available week commencing 8/6/18
$0.44 $ 0.44
Price for:
Multiple: 1 Minimum: 1
Quantity Price
1 + $0.44
10 + $0.358
100 + $0.218
500 + $0.194
1000 + $0.169
2500 + $0.144
10000 + $0.134
25000 + $0.127
No longer stocked:: No Longer Manufactured::
Add to Cart
Add Line Note
Total Price:
Total Price: ( )
Total Price: --

Customer Reviews

Customer Q&A Exchange


Like to see information about this product from other customers?

 Read discussions, blogs, documents from our community members.


Select document type(s) you want to see and click “Apply Filters” button
Post a question to one of our experts or start a discussion and get responses from supplier experts and fellow engineers in our community.