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Texas Instruments SN74LVC139ARGYR
- Part No.:
- SN74LVC139ARGYR
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
SN74LVC139ARGYR.pdf
- Description:
- IC DECODER/DEMUX 1X2:4 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,639
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Product details
Overview
SN74LVC139ARGYR from Texas Instruments is a dual 2-line to 4-line decoder/demultiplexer in a 16-pin VQFN (RGY) package, operating from 1.65 V to 3.6 V supply, with 6.2 ns max propagation delay at 3.3 V, ±24 mA output drive, and 5.5 V-tolerant inputs. It serves as a level-translating address decoder in low-voltage microcontroller peripheral expansion systems.
For engineers reviewing the SN74LVC139ARGYR datasheet, SN74LVC139ARGYR pinout, SN74LVC139ARGYR application, or SN74LVC139ARGYR equivalent, key selection considerations include its dual-decoder architecture with active-low enables, 3.3 V/5 V mixed-signal interface capability, latch-up immunity (>250 mA), and QFN thermal performance (θJA = 39°C/W).
Technical Context
This device integrates two independent 2-to-4 line decoders sharing no internal logic-each has dedicated A/B select inputs and active-low G enable. Inputs are fully buffered and 5.5 V tolerant, enabling direct interfacing with legacy 5 V logic while powered from 1.65–3.6 V rails.
Propagation delay asymmetry is minimized: tpd from G to Y is 4.7 ns (min) at 3.3 V, while tpd from A/B to Y is 6.2 ns (max); output ground bounce (VOLP) remains <0.8 V and VOH undershoot >2 V under 3.3 V/25°C conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 3.6 V - supports single-supply operation across modern low-voltage logic families including LVC, AVC, and ALVC. |
| Max Propagation Delay | 6.2 ns at VCC = 3.3 V - enables reliable timing in high-speed address decoding up to ~160 MHz system clock domains. |
| Output Drive | ±24 mA at VCC = 3.0 V - sufficient to directly drive multiple LVC inputs or small capacitive loads without external buffers. |
| Input Voltage Tolerance | Up to 5.5 V - allows safe connection to 5 V microcontrollers or FPGAs without level-shifting circuitry. |
| Latch-Up Immunity | >250 mA per JESD 17 - ensures robustness against transient current surges in noisy industrial environments. |
| Power Dissipation Capacitance | 30.5 pF at 3.3 V - quantifies dynamic power consumption for accurate estimation in battery-powered or thermally constrained designs. |
Pinout & Package
VQFN-16 (RGY) package, 3.0 mm × 3.0 mm body, 0.4 mm pitch, exposed thermal pad, RoHS-compliant NIPDAU finish, MSL Level-2 (260°C, 1 year).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | 1A, 1B, 1G, VCC | First decoder inputs (A/B), active-low enable (G), and positive supply - G must be low for 1Y0–1Y3 outputs to respond to A/B. |
| 5, 6, 7, 8 | 2G, 2A, 2B, 2Y0 | Second decoder enable, select inputs, and first output - independent control path; no shared logic between decoders. |
| 9–12 | 2Y1, 2Y2, 2Y3, GND | Remaining outputs of second decoder and ground reference - GND pin placed adjacent to VCC for local decoupling. |
| 13–16 | 1Y0, 1Y1, 1Y2, 1Y3 | Four active-low decoded outputs of first decoder - outputs go low only when corresponding input combination is matched and 1G is asserted. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent decoders | Enables simultaneous address decoding for two peripheral banks (e.g., SPI flash + I²C EEPROM) without inter-channel timing coupling. |
| 5.5 V-tolerant inputs | Eliminates need for external level shifters when interfacing with 5 V microcontrollers or legacy logic in mixed-voltage systems. |
| Low dynamic power | Cpd = 30.5 pF at 3.3 V allows sub-mW operation at 10 MHz toggle rate - critical for portable and always-on IoT nodes. |
| High noise immunity | VIL = 0.35×VCC (min) and VIH = 0.65×VCC (max) provide >30% noise margin at 1.8 V supply - improves reliability in EMI-prone motor-control boards. |
| Thermally enhanced QFN | θJA = 39°C/W enables sustained 100 mA total output current without heatsink - suitable for compact industrial PLC modules. |
Applications
| Industrial PLC I/O Expansion | Embedded Microcontroller Address Decoding |
|---|---|
|
Use Scenario: Expanding GPIO count on an ARM Cortex-M4 MCU by selecting among 8 peripheral devices via 3-bit address bus. IC Role / Device Role / Timing Role: Dual decoder maps upper address bits to enable lines of SPI, UART, and sensor ICs; operates synchronously with MCU clock domain. Use Value: Reduces PCB routing complexity by replacing discrete logic gates; maintains <6.2 ns timing skew across all 8 enable signals. |
Use Scenario: Selecting one of four memory-mapped peripherals (ADC, DAC, timer, GPIO expander) in a low-power wearable SoC design. IC Role / Device Role / Timing Role: Acts as address-space partitioner - A/B inputs driven by AXI bus LSBs, G inputs tied to chip-select strobes. Use Value: Enables 1.65 V core voltage operation while accepting 3.3 V debug interface signals - eliminates level shifter BOM cost and layout area. |
| Automotive Body Control Module | Test Equipment Signal Routing |
|
Use Scenario: Controlling eight LED driver ICs in a vehicle lighting control unit using CAN-received command data. IC Role / Device Role / Timing Role: Translates 3-bit decoded instruction into individual enable pulses for constant-current LED drivers; operates within ASIL-B subsystem timing budget. Use Value: Latch-up immunity >250 mA prevents failure during load-dump transients; 85°C ambient rating meets under-hood requirements. |
Use Scenario: Routing test signals from a pattern generator to one of four DUT channels in automated functional test fixtures. IC Role / Device Role / Timing Role: Functions as programmable signal switch - G inputs controlled by FPGA, outputs drive 50 Ω coaxial paths with minimal skew. Use Value: 6.2 ns max tpd ensures <100 ps channel-to-channel skew across all four paths - critical for high-speed digital test repeatability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 2-to-4 decoder applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LV139ADR | SOIC-16 package; higher θJA (73°C/W); identical electrical specs except 7.5 ns max tpd at 3.3 V. | Preferred for through-hole prototyping or legacy board rework where QFN reflow is unavailable. | Choose when manual soldering or thermal derating margin >15°C is required; same pinout but larger footprint. |
| 74LVC139APWR | TSSOP-16 package; θJA = 108°C/W; identical logic function and voltage specs. | Better suited for hand-soldered evaluation boards due to wider 0.65 mm pitch vs. RGY's 0.4 mm. | Use when assembly infrastructure lacks fine-pitch QFN reflow capability; requires 30% more PCB area than RGY. |
Compared with SN74LV139ADR and 74LVC139APWR, SN74LVC139ARGYR delivers superior thermal performance (39°C/W) and smallest footprint (3×3 mm), making it optimal for space-constrained, high-density industrial controllers where thermal management and miniaturization are primary constraints.
Availability
SN74LVC139ARGYR is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, embedded microcontroller address decoding, automotive body control modules, and automated test equipment requiring stable component supply and long-term production continuity.
Supply support for SN74LVC139ARGYR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with over 50 years of innovation in logic, power management, and signal chain solutions.
The SN74LVC139ARGYR belongs to TI's LVC (Low-Voltage CMOS) logic family, designed specifically for high-speed, low-power, mixed-voltage interface applications in industrial automation, communications infrastructure, and portable electronics.
FAQ
What is the maximum operating temperature range for SN74LVC139ARGYR?
The SN74LVC139ARGYR is rated for operation from –40°C to +85°C ambient temperature. This range is validated per JEDEC JESD78 and confirmed in TI's production test flow; the RGY package's thermal performance (θJA = 39°C/W) ensures reliable operation at full output loading within this envelope.
Can SN74LVC139ARGYR safely interface with 5 V logic inputs while powered at 1.8 V?
Yes. The SN74LVC139ARGYR inputs are specified to tolerate up to 5.5 V regardless of VCC, including at 1.8 V supply. This is verified per TI's absolute maximum ratings and electrical characteristics tables - no external clamping or level shifting is required for 5 V signal compatibility.
Does SN74LVC139ARGYR support hot insertion or live swapping?
No. SN74LVC139ARGYR does not include hot-swap protection circuitry such as power-up sequencing control or Ioff isolation. Its inputs are not guaranteed to be high-impedance during power transitions; applying signals before VCC stabilization may cause excessive current or undefined outputs.
What is the recommended PCB layout practice for the thermal pad on SN74LVC139ARGYR?
TI recommends connecting the exposed thermal pad of SN74LVC139ARGYR to a solid internal or bottom-layer copper pour tied to GND via ≥4 thermal vias (0.3 mm diameter, spaced ≤1 mm apart). This achieves the published θJA = 39°C/W and prevents localized heating above 100°C under full 24 mA per output loading.
Is SN74LVC139ARGYR pin-compatible with older 74LS139 or 74HC139 devices?
No. While functionally equivalent, SN74LVC139ARGYR uses a 16-pin VQFN (RGY) package with different pin assignments than the 16-pin DIP, SOIC, or TSSOP packages of 74LS139/74HC139. Pin mapping differs significantly - e.g., VCC is on pin 4 (not 16), and GND is on pin 9 (not 8) - requiring PCB redesign.
SN74LVC139ARGYR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 16-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Decoder/Demultiplexer
- Circuit:
- 1 x 2:4
- Independent Circuits:
- 2
- Current - Output High, Low:
- 24mA, 24mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-VQFN (4x3.5)
SN74LVC139ARGYR FAQ
1.How can I place an order for SN74LVC139ARGYR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC139ARGYR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SN74LVC139ARGYR reliable?
The price and inventory of SN74LVC139ARGYR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC139ARGYR is usually 5 days.
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SN74LVC139ARGYR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC139ARGYR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SN74LVC139ARGYR?
For technical support, including SN74LVC139ARGYR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC139ARGYR requirements.
6.How does Aetrix verify that SN74LVC139ARGYR is sourced from the original manufacturer or authorized distributors?
All SN74LVC139ARGYR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SN74LVC139ARGYR meets industry standards.
7.What is the process for return or replacement of SN74LVC139ARGYR?
All SN74LVC139ARGYR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC139ARGYR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SN74LVC139ARGYR part is unused and in its original packaging.
Return procedure for SN74LVC139ARGYR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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