SN74159NKH Texas Instruments Integrated Circuit (Dual-In-Line Packages) In Stock
Texas Instruments SN74159NKH is a 4-to-16 line decoder and demultiplexer with open-collector outputs, compatible with TTL logic levels. It accepts 4-bit binary input to activate 1 of 16 output lines, enabling address decoding and data routing. Available in a 24-pin DIP package for through-hole designs with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Dual-In-Line Packages
- Pin Count
- 24
- Lifecycle
- ACTIVE
- Datasheet
- SN74159NKH Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74159NKH?
- 4-to-16 line decoder/demultiplexer with open-collector outputs for wired-OR bus configurations and flexible load driving
- TTL-compatible 4-bit binary input decodes to 1 of 16 output lines, ideal for memory address decoding and I/O expansion
- 24-pin DIP through-hole package for prototyping and industrial designs requiring easy socketed replacement
What is SN74159NKH used for?
The SN74159NKH is used in digital address decoding systems where a 4-bit binary code must select one of 16 outputs, such as memory chip-select generation or I/O port expansion in microprocessor-based designs. Its open-collector outputs allow multiple devices to share a common bus line in wired-OR configurations. The device is also suitable for data distribution, multiplexed display driving, and legacy TTL system upgrades.
What are the specifications of SN74159NKH?
| YTEOL | EYTEOL |
| Package | Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Country of Origin | Country of Origin |
Where can I find the SN74159NKH datasheet?
SN74159NKH Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74159NKH?
Compatible alternatives and drop-in replacements for SN74159NKH:
Frequently Asked Questions
How many output lines does SN74159NKH decode to, and what input code width is required?
The SN74159NKH decodes a 4-bit binary input to activate 1 of 16 output lines. This 4-to-16 decoding capability is useful in address demultiplexing for memory systems where a microprocessor's lower 4 address bits select among 16 chip-select or I/O output lines.
What advantage do open-collector outputs provide in a bus-sharing design using SN74159NKH?
Open-collector outputs allow multiple SN74159NKH devices to drive a shared bus line in a wired-OR configuration without contention. Each output can only pull low, so a pull-up resistor of typically 1 kΩ to 4.7 kΩ sets the high state, enabling flexible bus architectures in TTL-level digital systems with up to 16 selectable nodes.
When is SN74159NKH a lower-complexity alternative to a programmable logic device for address decoding?
SN74159NKH is a lower-complexity choice when a fixed 4-to-16 decode map with open-collector outputs is sufficient and no custom logic equations are needed. Using a single 24-pin DIP component avoids CPLD programming overhead, simplifying BOM and reducing design time for legacy TTL address decoding in industrial control panels or retrofit boards.
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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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