CD74HC139M Texas Instruments Integrated Circuit (Other) In Stock
CD74HC139M is a dual 2-line to 4-line inverting decoder/demultiplexer in the HC CMOS family, operating from 2 V to 6 V. Each section decodes 2 address inputs into 4 active-low outputs with 50 pF load capacity. Available in a 16-pin SOIC package with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- CD74HC139M Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5368(MOQ 1)
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of CD74HC139M?
- Dual independent 2-to-4 decoder sections in a single 16-pin package, reducing component count in address decoding and chip-select logic
- Wide 2 V to 6 V supply range with HC CMOS logic levels ensures compatibility with both 3.3 V and 5 V microcontroller and FPGA I/O
- Active-low inverting outputs drive up to 5.2 mA, enabling direct chip-select and memory-enable connections without additional buffers
What is CD74HC139M used for?
CD74HC139M is widely used in microprocessor address decoding, memory banking, and I/O expansion circuits where 2 control lines must select among 4 peripheral chip-enables. Its dual independent sections allow two separate 1-of-4 selection functions from a single package, reducing BOM cost in embedded systems operating at 3.3 V or 5 V. The device also serves as a demultiplexer in data routing and bus expansion applications found in industrial control and consumer electronics.
What are the specifications of CD74HC139M?
| Reach Compliance Code | Compliant |
| 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) | 0.16mA |
| Prop. Delay@Nom-Sup | 36ns |
| 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 | MILITARY |
| 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 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Mexico |
Where can I find the CD74HC139M datasheet?
CD74HC139M Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for CD74HC139M?
Compatible alternatives and drop-in replacements for CD74HC139M:
Frequently Asked Questions
What supply voltage range does CD74HC139M support, and which logic families can directly interface with it?
CD74HC139M operates from 2 V to 6 V, making it directly compatible with 3.3 V and 5 V CMOS logic systems without level-shifting. Its HC CMOS input thresholds track the supply voltage, so it interfaces cleanly with microcontrollers, FPGAs, and other HC-family devices across the full 2 V to 6 V range without additional glue logic.
How many independent decoder channels does CD74HC139M provide, and how does this help in a multi-peripheral microcontroller design?
CD74HC139M contains 2 independent 2-line to 4-line decoder sections in a single 16-pin SOIC package, providing up to 8 active-low chip-select outputs from just 4 address lines. In a microcontroller design with multiple SPI or parallel peripherals, both sections can decode separate address buses simultaneously, eliminating the need for two discrete 74HC139 packages and saving PCB space.
What is the maximum output sink current of CD74HC139M, and does it need a buffer to drive TTL loads?
Each output of CD74HC139M can sink 5.2 mA at a 50 pF load capacitance, sufficient to drive standard TTL-level chip-enable inputs directly without external buffers. For loads that draw more than 5.2 mA per pin, a bus buffer or driver IC such as 74HC244 should be added to avoid output voltage degradation on the active-low lines.
Can CD74HC139M be used as a 1-of-8 decoder, and what is the typical propagation delay at 5 V?
Two CD74HC139M sections can be cascaded with additional enable logic to form a 1-of-8 decoder, though a dedicated 74HC138 3-to-8 decoder may be more efficient for that purpose. At a 5 V supply the CD74HC139M propagation delay is typically around 7 ns to 9 ns with a 50 pF load, enabling correct address decoding at microprocessor bus speeds above 50 MHz.
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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.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.2400 | $1.24 |
| 277+ | $1.0800 | $299.16 |
| 1000+ | $0.7186 | $718.60 |
| 10000+ | $0.6407 | $6407.00 |
| 100000+ | $0.5368 | $53680.00 |
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