SN74LS138NG4 Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
Texas Instruments SN74LS138NG4 is a 3-to-8 line decoder and demultiplexer IC in a 16-pin DIP package. Features three enable inputs for easy cascading, active-low outputs, and TTL compatible logic levels for address decoding applications. Available from stock worldwide with competitive pricing and fast shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- SN74LS138NG4 Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.3721(MOQ 425)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74LS138NG4?
- 3-to-8 line decoder with active-low outputs enables direct chip select decoding for up to 8 memory or peripheral devices
- Three enable inputs including two active-low and one active-high allow easy cascading to form larger decoder networks
- TTL-compatible inputs and outputs ensure seamless integration with standard 74LS and 74HCT family logic circuits
- Through-hole 16-pin DIP package simplifies prototyping, repair, and use in breadboard-based educational and hobby projects
What is SN74LS138NG4 used for?
The SN74LS138NG4 is widely used in microprocessor and microcontroller system designs for address decoding, enabling selection among multiple memory chips, I/O devices, or peripheral modules using a 3-bit address bus. It is also employed in data routing, demultiplexing applications, and control logic where one of eight outputs needs to be activated based on input bit patterns. Digital electronics education labs and prototyping environments use this device extensively due to its classic DIP form factor and straightforward TTL logic behavior.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the SN74LS138NG4 datasheet?
SN74LS138NG4 Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74LS138NG4?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What does the SN74LS138NG4 decoder do?
The SN74LS138NG4 is a 3-to-8 line decoder that activates one of eight active-low outputs based on the 3-bit binary input address, commonly used for address decoding in microprocessor systems to select among multiple memory banks or peripheral devices.
How many enable pins does the SN74LS138NG4 have and how do they work?
The SN74LS138NG4 has three enable inputs: two active-low enables (G1 and G2A) and one active-high enable (G2B). All three must be in the correct state for the decoder to operate, which facilitates cascading multiple devices to expand decoding capacity.
What package does the SN74LS138NG4 come in?
The SN74LS138NG4 is available in a 16-pin DIP (Dual In-line Package) through-hole package, which is ideal for prototyping on breadboards and is also used in educational and repair applications where through-hole soldering is preferred.
Can the SN74LS138NG4 be used as a demultiplexer?
Yes, the SN74LS138NG4 can be configured as a 1-to-8 demultiplexer by using one of the enable inputs as the data input and the three address lines to select which output receives the data signal, making it versatile for both decoding and demultiplexing.
What logic family does the SN74LS138NG4 belong to?
The SN74LS138NG4 belongs to the 74LS (Low-power Schottky) TTL logic family, operating at 5V and offering reduced power consumption compared to standard TTL while maintaining full compatibility with other 74-series TTL and CMOS logic families.
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Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 425+ | $0.4725 | $200.81 |
| 550+ | $0.4568 | $251.24 |
| 735+ | $0.4095 | $300.98 |
| 1000+ | $0.3721 | $372.14 |
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
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