SN74HCT139D Texas Instruments logic (SOIC-16) In Stock
SN74HCT139D is a dual 2-to-4 line decoder/demultiplexer from Texas Instruments, HCT CMOS with TTL-compatible inputs, 2V-6V supply, 16-pin SOIC. In stock from $0.66/unit, 1 pc MOQ, worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- SOIC-16
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- SN74HCT139D Datasheet PDF
- Category
- logic
- Price
- From $0.1980(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SN74HCT139D?
- Dual independent 2-to-4 line decoder/demultiplexer in a single 16-pin SOIC package
- HCT family: CMOS with TTL-compatible input thresholds (V_IH = 2V typ)
- Wide supply voltage range: 2V to 6V
- Active-low enable inputs per decoder for easy cascading
- Operating temperature: -40 to +85 degrees C, suitable for industrial designs
What is SN74HCT139D used for?
SN74HCT139D is widely used in address decoding for memory and I/O expansion, enabling microcontrollers to select multiple peripheral chips. It also finds application in data routing, demultiplexing control signals in embedded systems, and general-purpose logic decoding in industrial and consumer electronics.
What are the specifications of SN74HCT139D?
| Supply Voltage | 2 to 6V |
| Input Logic Family | HCT (TTL-compatible) |
| Number of Channels | 2 |
| Outputs per Channel | 4 |
| Output Type | Active-Low |
| Propagation Delay (typ) | 13ns |
| Operating Temperature | -40 to +85C |
| Package | SOIC-16 |
| Package | SOIC-16 |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the SN74HCT139D datasheet?
SN74HCT139D Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for SN74HCT139D?
Compatible alternatives and drop-in replacements for SN74HCT139D:
Pin-compatible HCT dual 2-to-4 decoder, same SOIC-16 package and electrical specs
Frequently Asked Questions
What is the SN74HCT139D and what does it do?
The SN74HCT139D is a dual 2-to-4 line decoder/demultiplexer from Texas Instruments. Each half accepts a 2-bit binary address (A0, A1) plus an active-low enable and drives one of four active-low outputs low. Both halves operate independently, making it ideal for selecting up to 8 peripherals from a single IC.
What supply voltage does the SN74HCT139D support?
The SN74HCT139D operates from 2V to 6V, making it compatible with 3.3V and 5V systems. Its HCT input thresholds mirror TTL levels (V_IH >= 2V), so it interfaces directly with 5V TTL logic while consuming low CMOS quiescent current.
What package options are available for the SN74HCT139?
The SN74HCT139 family is available in several packages: SN74HCT139D (SOIC-16, surface-mount), SN74HCT139DR (SOIC-16 tape and reel), SN74HCT139E (PDIP-16, through-hole), and SN74HCT139PW (TSSOP-16, fine-pitch SMD). The SOIC-16 variant is the most common for modern PCB designs.
How does SN74HCT139D compare to 74HC139 and 74LS139?
All three are dual 2-to-4 decoders with pin-compatible SOIC-16 footprints. HCT has TTL-compatible input thresholds unlike the standard HC series which requires CMOS-level inputs. LS is a bipolar TTL device with higher quiescent power; HCT provides the same interface compatibility with much lower power draw and improved noise immunity.
What is the minimum order quantity and lead time for SN74HCT139D?
SN74HCT139D has a MOQ of 1 piece with pricing from $0.66/unit (single) down to $0.198 at 169+ units. The part is active and in-stock; typical lead time for standard quantities is same-day to 2 weeks depending on volume. Contact FindMyChip for bulk quotes and expedited sourcing.
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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 |
|---|---|---|
| 1+ | $0.6600 | $0.66 |
| 18+ | $0.6192 | $11.15 |
| 20+ | $0.2970 | $5.94 |
| 169+ | $0.1980 | $33.46 |
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