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Texas Instruments SN74LV139ARGYR
- Part No.:
- SN74LV139ARGYR
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
SN74LV139ARGYR.pdf
- Description:
- IC DECODER/DEMUX 1X2:4 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
SN74LV139ARGYR from Texas Instruments is a dual 2-line-to-4-line decoder/demultiplexer in a 16-pin VQFN package (4.00 mm × 3.50 mm), operating from 2 V to 5.5 V, with 7.5 ns max propagation delay at 5 V, Ioff support for partial-power-down mode, and mixed-mode voltage operation on all ports. It serves as a high-speed memory address decoder or data routing switch in compact embedded control systems.
For engineers reviewing the SN74LV139ARGYR datasheet, SN74LV139ARGYR pinout, SN74LV139ARGYR application, or SN74LV139ARGYR equivalent, this page delivers verified functional modes, VQFN-specific thermal metrics (RθJA = 39 °C/W), switching characteristics across 2.5 V/3.3 V/5 V rails, latch-up immunity (>250 mA), and precise pin-level I/O roles - all confirmed for the RGY variant.
Technical Context
The SN74LV139ARGYR implements two independent positive-logic 2-to-4 decoders, each with active-low enable (G) and complementary address inputs (A0, A1). Its fully buffered inputs present only one normalized load, minimizing fanout burden on upstream drivers.
Each decoder drives four active-low outputs (Y0–Y3) with rail-to-rail swing capability under specified IOH/IOL conditions. The Ioff circuitry ensures bidirectional isolation during power sequencing, preventing backflow current when VCC = 0 V while inputs/outputs remain biased between 0 V and 5.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2 V to 5.5 V - supports direct interface with 2.5 V, 3.3 V, and 5 V logic domains without level shifters. |
| Max tpd @ 5 V | 7.5 ns - enables sub-133 MHz decoding cycles in memory subsystems with tight timing budgets. |
| Ioff | ≤5 μA - guarantees safe partial-power-down operation during system sleep states or hot-swap events. |
| Latch-up Immunity | >250 mA per JESD17 - eliminates risk of destructive latch-up in noisy industrial environments. |
| RθJA (RGY) | 39 °C/W - allows sustained 12 mA output drive at 85 °C ambient without derating in standard PCB layouts. |
| ESD Rating (HBM) | ±2000 V - meets IEC 61000-4-2 Level 2 for board-level ESD robustness in consumer and industrial end equipment. |
| Input Capacitance | 1.9 pF @ 3.3 V - minimizes capacitive loading on clock/address buses, preserving signal integrity up to 200 MHz. |
Pinout & Package
SN74LV139ARGYR uses a 4.00 mm × 3.50 mm, 16-pin VQFN (RGY) package with exposed thermal pad. Pin 1 is located at the top-left corner (Q1 quadrant), and the package is moisture-sensitive Level-2 (260 °C, 1 year).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1G | Channel 1 enable input | Active-low control: disables all Y0–Y3 outputs when high; enables decoding when low. |
| 1A0, 1A1 | Channel 1 address inputs | Binary select lines determining which of four outputs (Y0–Y3) goes low; fully buffered for low capacitive load. |
| 1Y0–1Y3 | Channel 1 decoded outputs | Active-low outputs; only one asserted per valid address; high-impedance when 1G = high. |
| GND (Pin 8) | Ground reference | Primary return path for all internal logic and output currents; must be low-impedance connection to PCB ground plane. |
| VCC (Pin 16) | Positive supply | Single 2–5.5 V rail powering both decoder channels; requires local 0.1 μF bypass capacitor adjacent to pin. |
| 2G, 2A0, 2A1, 2Y0–2Y3 | Channel 2 enable/address/outputs | Functionally identical to Channel 1; independent operation enables cascaded decoding or dual-bank selection. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent decoders | Enables simultaneous address decoding for two memory banks or peripheral groups without inter-channel timing skew. |
| Mixed-mode voltage operation | Accepts 0–5.5 V input voltages regardless of VCC, allowing direct interfacing with legacy 5 V or modern 2.5 V controllers. |
| 7.5 ns max tpd @ 5 V | Reduces worst-case address decode latency below typical SRAM access times, eliminating wait-state insertion in fast memory systems. |
| Ioff protection | Prevents damaging current flow from live inputs to unpowered VCC, enabling safe power sequencing in multi-rail FPGA or SoC carrier boards. |
| 16-pin VQFN (RGY) | 4.00 mm × 3.50 mm footprint with thermal pad delivers 39 °C/W junction-to-ambient resistance - ideal for space-constrained industrial controllers. |
Applications
| Memory Address Decoding | Peripheral Select Logic |
|---|---|
|
Use Scenario: Selecting one of four SRAM chips in a microcontroller-based data logger with 16-bit address bus expansion. IC Role / Device Role / Timing Role: Dual decoder maps upper address bits (A14–A15) to individual chip-enable lines, enabling banked memory access without glue logic. Use Value: Eliminates need for discrete NAND gates or CPLDs, reducing BOM count and layout area while maintaining <7.5 ns decode latency. |
Use Scenario: Routing UART, SPI, and I²C signals to four sensor modules in an environmental monitoring node. IC Role / Device Role / Timing Role: Acts as demultiplexer: microcontroller GPIOs drive 1A0/1A1 and 1G to activate one sensor's enable line per transaction. Use Value: Enables single-controller management of multiple sensors using only three GPIOs instead of four dedicated enables. |
| Power Sequencing Control | Test Mode Selection |
|
Use Scenario: Enabling/disabling power rails for analog front-end, RF transceiver, and digital baseband in a battery-powered IoT device. IC Role / Device Role / Timing Role: Uses Ioff-enabled outputs to drive MOSFET gate drivers; remains safe during partial power-down of VCC. Use Value: Guarantees no backfeed current during sleep mode, extending battery life and preventing unintended rail activation. |
Use Scenario: Configuring diagnostic test modes (calibration, loopback, factory reset) via DIP switch or firmware-controlled GPIOs. IC Role / Device Role / Timing Role: Converts two binary switch inputs into four mutually exclusive test-enable signals routed to subsystems. Use Value: Provides glitch-free, debounced mode selection with hardware-level mutual exclusion - no software polling or state-machine overhead. |
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 |
|---|---|---|---|
| SN74HC139DR | Higher VCC min (2 V vs. 4.5 V), slower tpd (25 ns @ 4.5 V), no Ioff, SOIC-16 only | Not suitable for partial-power-down or mixed-voltage systems; limited to 4.5–5.5 V operation | Select when cost sensitivity outweighs speed/power requirements and system uses only 5 V logic. |
| 74LVC139ADTR2G | Same VCC range (1.65–5.5 V), comparable tpd (7.5 ns @ 3.3 V), TSSOP-16, no Ioff spec | Lacks JESD17 latch-up rating and Ioff guarantee; thermal resistance higher (108 °C/W vs. 39 °C/W) | Choose for legacy TSSOP footprint compatibility where thermal headroom is sufficient and power sequencing is not required. |
Compared with SN74HC139DR and 74LVC139ADTR2G, SN74LV139ARGYR uniquely combines VQFN miniaturization, 39 °C/W thermal performance, guaranteed Ioff, and JESD17 latch-up immunity - making it the only option qualified for compact, multi-rail, industrial-grade decoding where reliability and density are critical.
Availability
SN74LV139ARGYR is available at Aetrix Electronics and suitable for industrial control panels, battery-powered IoT gateways, and automotive body electronics requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for SN74LV139ARGYR 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 ICs and power-efficient digital solutions.
The SN74LV139A product line targets high-speed, low-voltage memory decoding and data-routing applications in space-constrained, thermally demanding systems - delivering speed, voltage flexibility, and robustness without design compromise.
FAQ
What is the maximum operating temperature for SN74LV139ARGYR?
The SN74LV139ARGYR is rated for continuous operation from –40 °C to +85 °C ambient temperature. Its 39 °C/W junction-to-ambient thermal resistance (RθJA) ensures reliable performance at full output drive (12 mA per pin) within this range when mounted on a standard 2-layer PCB with adequate copper pour.
Does SN74LV139ARGYR support partial-power-down mode?
Yes, SN74LV139ARGYR incorporates Ioff circuitry that limits input/output leakage to ≤5 μA when VCC = 0 V, enabling safe partial-power-down operation. This prevents backflow current from live inputs or outputs into an unpowered device - critical for hot-swap and multi-rail power sequencing scenarios.
What is the propagation delay of SN74LV139ARGYR at 3.3 V supply?
At VCC = 3.3 V ± 0.3 V and CL = 15 pF, SN74LV139ARGYR achieves a typical propagation delay (tpd) of 5.3 ns (A/B to Y) and 5.1 ns (G to Y), with a maximum of 13 ns and 11 ns respectively. These values are measured under standard load and temperature conditions per TI's SCLS396J datasheet.
Can SN74LV139ARGYR interface directly with 5 V TTL logic?
Yes, SN74LV139ARGYR supports mixed-mode voltage operation: its inputs tolerate 0–5.5 V regardless of VCC, and outputs swing rail-to-rail (0 V to VCC). When powered at 3.3 V, it accepts 5 V TTL input levels and drives 3.3 V CMOS-compatible outputs - eliminating external level shifters in hybrid logic systems.
What is the recommended bypass capacitor for SN74LV139ARGYR?
A 0.1 μF ceramic capacitor is recommended for SN74LV139ARGYR, placed as close as possible to the VCC (Pin 16) and GND (Pin 8) pins. For enhanced noise suppression, TI recommends paralleling this with a 1 μF capacitor - both installed on the same PCB side with short, wide traces to minimize inductance.
SN74LV139ARGYR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LV
- 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:
- 12mA, 12mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 2V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-VQFN (4x3.5)
SN74LV139ARGYR FAQ
1.How can I place an order for SN74LV139ARGYR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LV139ARGYR 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 SN74LV139ARGYR reliable?
The price and inventory of SN74LV139ARGYR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LV139ARGYR is usually 5 days.
3.What payment methods are accepted for SN74LV139ARGYR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LV139ARGYR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LV139ARGYR?
SN74LV139ARGYR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LV139ARGYR 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 SN74LV139ARGYR?
For technical support, including SN74LV139ARGYR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LV139ARGYR requirements.
6.How does Aetrix verify that SN74LV139ARGYR is sourced from the original manufacturer or authorized distributors?
All SN74LV139ARGYR 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 SN74LV139ARGYR meets industry standards.
7.What is the process for return or replacement of SN74LV139ARGYR?
All SN74LV139ARGYR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LV139ARGYR, 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 SN74LV139ARGYR part is unused and in its original packaging.
Return procedure for SN74LV139ARGYR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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