SN74148NS Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
SN74148NS is a Texas Instruments 8-to-3 priority encoder IC in a 16-pin DIP package. It features active-low inputs and outputs, cascade capability, and operates from a 5V supply. Available in stock worldwide with competitive pricing.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- SN74148NS Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74148NS?
- 8-to-3 line priority encoder with active-low inputs and outputs for TTL-compatible logic design
- Cascade-enable input and group-select output allow expansion to larger priority encoding systems beyond 8 inputs
- Operates from 5 V supply with propagation delay as low as 15 ns, suitable for high-speed digital logic applications
What is SN74148NS used for?
SN74148NS is widely used in interrupt-priority encoding circuits where multiple interrupt sources must be resolved to a 3-bit binary address for a microprocessor or controller. It also serves in keyboard encoding systems, data-routing logic, and any digital design requiring prioritized selection among up to 8 active-low input lines.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the SN74148NS datasheet?
SN74148NS Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74148NS?
Compatible alternatives and drop-in replacements for SN74148NS:
Frequently Asked Questions
What supply voltage and propagation delay does the SN74148NS support?
SN74148NS operates from a 5 V supply and offers a typical propagation delay of approximately 15 ns, making it suitable for TTL-compatible high-speed priority encoding applications with up to 8 active-low inputs.
How can SN74148NS be cascaded to encode more than 8 input lines?
Using the cascade-enable input (EI) and group-select output (GS), multiple SN74148NS devices can be chained to expand encoding beyond 8 inputs. For example, two devices can cover 16 inputs by connecting the EO of the lower-priority encoder to the EI of the higher-priority encoder.
In which priority-interrupt controller designs is SN74148NS a practical choice over discrete logic?
SN74148NS is a practical single-chip solution for systems needing up to 8 prioritized interrupt lines resolved to a 3-bit binary code, replacing 10 or more discrete gates. It is commonly used in legacy microprocessor boards, PLCs, and industrial control panels operating at 5 V TTL levels.
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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.
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