SN74AS151NIn StockTexas Instruments
SN74AS151N is an 8-input data selector/multiplexer logic IC by Texas Instruments, featuring advanced Schottky TTL technology for high-speed operation. Key specs: 8-to-1 multiplexing, 3-state outputs, 5V supply voltage, propagation delay ~5ns. From $3.25, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- —
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- Price
- From $3.2500(MOQ 74)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 8-to-1 data selector/multiplexer with advanced Schottky TTL for high-speed switching
- Active-LOW strobe input enables cascading multiple devices for larger multiplexing
- 3-state output option provides bus-compatible interface for system integration
- Standard DIP-16 package ensures easy PCB integration and broad tooling support
- Compatible with TTL, LSTTL, and CMOS logic families for versatile system design
Applications
The SN74AS151N is widely used in digital systems requiring data routing and selection, such as microcontroller I/O expansion, data bus switching, and logic function generation. It is commonly found in industrial control systems, communication equipment, and embedded designs where high-speed signal multiplexing is critical. Its TTL compatibility also makes it suitable for upgrading or replacing legacy logic circuits in existing hardware platforms.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the SN74AS151N and what does it do?
The SN74AS151N is an 8-input data selector/multiplexer from Texas Instruments. It selects one of eight data inputs based on a 3-bit binary address and routes the selected signal to the output, making it ideal for data routing, function generation, and parallel-to-serial conversion in digital circuits.
What are the key electrical specifications of the SN74AS151N?
The SN74AS151N operates on a 5V supply voltage, features advanced Schottky TTL technology with a typical propagation delay of around 5ns, supports an 8-to-1 multiplexing ratio, and provides complementary (Y and W) outputs. Maximum operating frequency exceeds 100MHz, making it suitable for high-speed digital systems.
What package type does the SN74AS151N come in and is it RoHS compliant?
The SN74AS151N is available in a 16-pin PDIP (plastic dual in-line package) through-hole package, which is convenient for prototyping and hand soldering. This legacy package variant may have RoHS exemptions; users requiring full RoHS compliance should consider the surface-mount SN74AS151D or SN74AS151DR alternatives.
What are common applications for the SN74AS151N?
Common applications include microprocessor data bus expansion, digital signal routing in communications equipment, combinational logic function implementation, parallel-to-serial data conversion, and channel selection in test and measurement instruments. The device is also used in industrial control systems requiring reliable, high-speed logic switching.
What are suitable replacement or equivalent parts for the SN74AS151N?
Suitable pin-compatible alternatives include the SN74LS151N (low-power Schottky), SN74F151N (FAST TTL), and SN74HC151N (CMOS, 2V–6V supply). For surface-mount designs, the SN74AS151D offers the same functionality in an SOIC-16 package. Always verify timing and voltage specifications before substituting in a design.
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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.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 74+ | $4.0600 | $300.44 |
| 275+ | $3.6100 | $992.75 |
| 1000+ | $3.4500 | $3450.00 |
| 10000+ | $3.2500 | $32500.00 |
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