SN74HC139DIn StockTexas Instruments
SN74HC139D is a dual 2-to-4 line decoder/demultiplexer IC by Texas Instruments, featuring high-speed CMOS logic with active-low outputs and enable control. Key specs: 2V–6V supply voltage, 8ns propagation delay, 74HC CMOS logic family. From $0.5315, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- —
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- Price
- From $0.5315(MOQ 1)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual independent 2-to-4 line decoder/demultiplexer in a single package
- Wide supply voltage range: 2V to 6V for flexible system integration
- High-speed CMOS logic with 8ns typical propagation delay
- Active-low outputs with separate enable inputs per decoder section
- Compatible with TTL logic levels for easy interfacing with legacy systems
- Low power consumption characteristic of 74HC CMOS family
Applications
The SN74HC139D is widely used in address decoding for microprocessor and microcontroller systems, enabling selection of multiple memory or peripheral devices from a binary address bus. It serves well in data routing and demultiplexing applications where a single data source must be directed to one of four outputs. Additional use cases include register selection in programmable logic systems, signal routing in industrial control equipment, and general-purpose binary-to-octal decoding in digital logic designs.
Specifications
| YTEOL | 0 |
| Family | HC/UH |
| Input Conditioning | STANDARD |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Load Capacitance (CL) | 50pF |
| Logic IC Type | 2-LINE TO 4-LINE DECODER |
| Max I(ol) | 0.0052A |
| Number of Bits | 4 |
| Number of Functions | 2 |
| Output Polarity | INVERTED |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP16,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Packing Method | TUBE |
| Peak Reflow Temperature (Cel) | 260 |
| Power Supply Current-Max (ICC) | 0.08mA |
| Prop. Delay@Nom-Sup | 44ns |
| Propagation Delay (tpd) | 220ns |
| Qualification Status | Not Qualified |
| Supply Voltage-Max (Vsup) | 6V |
| Supply Voltage-Min (Vsup) | 2V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| ## SN74HC139D Alternates Showing results | Image |
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 SN74HC139D and what does it do?
The SN74HC139D is a dual 2-to-4 line decoder/demultiplexer IC from Texas Instruments. It contains two independent decoder sections, each accepting a 2-bit binary input and activating one of four active-low outputs based on the input code. An enable pin (active low) controls each section independently, making it ideal for address decoding and data demultiplexing in digital systems.
What are the key electrical specifications of the SN74HC139D?
The SN74HC139D operates from a supply voltage of 2V to 6V, with a typical propagation delay of 8ns at 5V. It can sink/source up to 25mA per output, and features TTL-compatible input thresholds. Operating temperature range is -40°C to +125°C, covering both commercial and industrial applications.
What package does the SN74HC139D come in?
The SN74HC139D is housed in a 16-pin SOIC (Small Outline Integrated Circuit) package, suitable for surface-mount assembly on PCBs. Texas Instruments also offers the SN74HC139N in a through-hole DIP-16 package for prototyping and breadboard use, and the SN74HC139PW in a TSSOP-16 package for space-constrained designs.
How does the SN74HC139D compare to its alternatives?
The SN74HC139D is the high-speed CMOS version of the classic 74139 logic family. Compared to the 74LS139, it offers lower power consumption and higher speed. The 74HCT139D is a TTL-compatible version recommended when interfacing directly with 74LS or other TTL logic. The CD4556 is a CMOS equivalent with a slightly different pin-out and broader supply range but slower speed.
Where can I buy the SN74HC139D and what is the typical price?
The SN74HC139D is available from major distributors including Digi-Key, Mouser, and Arrow. Unit pricing starts at approximately $0.53, with volume discounts available for quantities of 100 or more. FindMyChip lists the SN74HC139D in stock with worldwide shipping options, allowing easy procurement for both prototype and production orders.
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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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.5000 | $2.50 |
| 11+ | $1.5000 | $16.50 |
| 41+ | $1.2500 | $51.25 |
| 334+ | $0.9000 | $300.60 |
| 1000+ | $0.5961 | $596.10 |
| 10000+ | $0.5315 | $5315.00 |
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