SN74HC151NS Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
The SN74HC151NS is an 8-to-1 digital multiplexer in the high-speed HC CMOS logic family, packaged in a 16-pin SOIC. It selects one of 8 data inputs via 3 address lines and provides complementary true and inverted outputs. Available worldwide for data routing and signal selection applications.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- SN74HC151NS Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 8-to-1 single-channel multiplexer with 3 address inputs selecting one of 8 data lines in 16-SOIC package
- Complementary true and inverted output pair enables direct drive of both polarities without external inverters
- HC CMOS family with 2 V to 6 V supply range and high noise immunity for robust digital signal routing
Applications
The SN74HC151NS is used in data acquisition and logic systems where a single channel must be selected from 8 input signals, such as analog/digital multiplexing in microcontroller port expanders. Its complementary outputs simplify differential signal routing and reduce external gate count in programmable logic interfacing. Typical applications include keyboard scan matrices, sensor channel selection, and memory bank switching in embedded designs.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SN74HC151NS:
Multiplexer, HC Series, 1-Func, 8 Line Input, 1 Line Output, Complementary Output, CMOS, PDSO16
Multiplexer, HC Series, 1-Func, 8 Line Input, 1 Line Output, Complementary Output, CMOS, PDSO16
Multiplexer, HC/UH Series, 1-Func, 8 Line Input, 1 Line Output, Complementary Output, CMOS, PDSO16
Frequently Asked Questions
How many data inputs can the SN74HC151NS select from, and how are they addressed?
The SN74HC151NS selects one of 8 data inputs using 3 binary address lines (A, B, C), covering all 8 possible input combinations. This single-device 8-to-1 multiplexing eliminates the need for external address decoders in designs that route data from up to 8 sources, operating from a 2 V to 6 V supply.
What package does the SN74HC151NS use and how does it differ from the DIP version?
The SN74HC151NS uses a 16-pin SOIC (Small Outline IC) surface-mount package with 1.27 mm lead pitch, compared to the 2.54 mm through-hole pitch of equivalent DIP variants. The SOIC footprint reduces PCB area by approximately 50% and supports automated SMT assembly, making it preferred for high-density board designs.
Can the SN74HC151NS drive both true and inverted output simultaneously in a differential signal path?
Yes, the SN74HC151NS provides complementary outputs: a true output (Y) and an inverted output (W) that are active simultaneously. Both outputs can source and sink current at HC CMOS levels across the full 2 V to 6 V supply range, allowing direct connection to differential receivers without requiring an additional inverter gate.
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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.
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