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Texas Instruments SN74LVC139ADGVR
- Part No.:
- SN74LVC139ADGVR
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74LVC139ADGVR.pdf
- Description:
- IC DECODER/DEMUX 1X2:4 16TVSOP
- Quantity:
- Payment:
- Shipping:
Inventory:375
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Product details
Overview
SN74LVC139ADGVR from Texas Instruments is a dual 2-line to 4-line decoder/demultiplexer in TVSOP-16 (DGV) package, operating from 1.65 V to 3.6 V, with 6.2 ns max propagation delay at 3.3 V and inputs tolerant to 5.5 V. It features two independent decoders, active-low enables, fully buffered inputs, and supports mixed-voltage translation in 3.3-V/5-V systems.
For engineers reviewing the SN74LVC139ADGVR datasheet, SN74LVC139ADGVR pinout, SN74LVC139ADGVR application, or SN74LVC139ADGVR equivalent, key selection factors include its dual-decoder architecture, 5.5-V-tolerant inputs, low-voltage operation down to 1.65 V, sub-7 ns timing at 3.3 V, and TVSOP-16 footprint compatibility with space-constrained digital logic designs.
Technical Context
The SN74LVC139ADGVR implements two independent 2-to-4 line decoders, each with active-low enable (G), two address inputs (A, B), and four active-low outputs (Y0–Y3). Its logic function follows standard binary decoding with priority given to the enable signal - all outputs go high when G is high.
Designed for LVC-family CMOS process, it delivers rail-to-rail output swing, input voltage tolerance beyond VCC (up to 5.5 V), and robust ESD protection (2000-V HBM). The device supports bidirectional voltage translation without external components due to 5.5-V-tolerant inputs and 1.65–3.6-V supply range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 3.6 V - enables direct integration into modern low-voltage I/O domains including 1.8-V, 2.5-V, and 3.3-V systems. |
| Max tpd | 6.2 ns at VCC = 3.3 V - ensures tight timing budgets in high-speed address decoding and demux paths. |
| Input Voltage Tolerance | Up to 5.5 V - allows interfacing with legacy 5-V logic without level shifters in mixed-supply environments. |
| Output Drive | ±24 mA at VCC = 3.0 V - supports fan-out to multiple LVC/LVT inputs or moderate capacitive loads. |
| ESD Rating | 2000-V HBM - meets industrial-grade handling requirements without additional board-level protection. |
| Operating Temp | –40°C to +85°C - qualified for commercial and extended industrial ambient conditions. |
Pinout & Package
SN74LVC139ADGVR uses a 16-pin Thin Very Small Outline Package (TVSOP, DGV), 4.4 mm × 3.6 mm body, 0.5 mm pitch, 1.2 mm max height, with exposed pad not electrically connected. Pin 1 is located at top-left corner with index marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 15, 16 | VCC, GND, GND | Power supply and ground connections - dual GND pins reduce ground bounce; VCC must be decoupled locally. |
| 2, 3, 4, 5 | 1A, 1B, 1G, 2G | Decoder 1 address inputs (A/B) and both decoder enables - active-low enables allow use as data lines in demux mode. |
| 6, 7, 10, 11 | 1Y0–1Y3 | Active-low decoded outputs for first decoder - asserted low per binary input combination when enabled. |
| 12, 13, 14 | 2A, 2B, 2Y0–2Y3 (pins 12–14, 8–9) | Second decoder's address inputs and first three outputs - pin 8 = 2Y0, pin 9 = 2Y1, pin 12 = 2A, pin 13 = 2B, pin 14 = 2Y2; pin 8 also serves as 2Y0. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent decoders | Enables compact implementation of two separate 2-to-4 decode functions in one IC - reduces PCB area vs. discrete solutions. |
| 5.5-V-tolerant inputs | Eliminates need for external level translators when driving from 5-V microcontrollers or FPGAs into 3.3-V or lower logic domains. |
| 1.65-V minimum VCC | Supports battery-powered and ultra-low-power systems using 1.8-V rails while maintaining full functionality and timing specs. |
| Low ground bounce (VOLP < 0.8 V) | Minimizes noise coupling into shared ground planes - critical for mixed-signal boards with ADCs or precision analog sections. |
| Latch-up immunity > 250 mA | Ensures robustness against transient overvoltage events and static discharge without destructive latch-up. |
Applications
| Memory Address Decoding | Peripheral Select Logic |
|---|---|
Use Scenario: Selecting among four SRAM or EEPROM chips in an embedded microcontroller system with limited address lines. IC Role / Device Role / Timing Role: Dual decoder maps 2-bit address segments to individual chip-enable signals; active-low outputs directly drive /CE pins. Use Value: Reduces glue logic count by replacing four discrete NAND gates; maintains <6.2 ns propagation delay across all selections. | Use Scenario: Enabling one of four UART, SPI, or GPIO expansion ICs on a shared bus in an industrial PLC module. IC Role / Device Role / Timing Role: Acts as peripheral selector - address bits choose target device, while enable lines synchronize with bus control signals. Use Value: Enables hot-swappable peripheral configuration via firmware-controlled address lines; 5.5-V input tolerance accommodates legacy 5-V bus controllers. |
| LED Matrix Row Driver | Mixed-Voltage Signal Routing |
Use Scenario: Driving rows of an 8×8 LED matrix where two rows are activated simultaneously using dual decode outputs. IC Role / Device Role / Timing Role: Provides time-multiplexed row selection - each decoder handles four rows, enabling staggered refresh without flicker. Use Value: Eliminates need for discrete transistors or shift registers; low VOL ensures full LED brightness even at 1.8-V VCC. | Use Scenario: Interfacing a 5-V sensor interface ASIC with a 3.3-V FPGA fabric in an automotive ADAS subsystem. IC Role / Device Role / Timing Role: Functions as unidirectional voltage translator - 5-V sensor outputs feed tolerant inputs, generating clean 3.3-V-compatible decoded signals. Use Value: Avoids dedicated level-shifter ICs; maintains sub-7 ns timing alignment between sensor event and FPGA response. |
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 | LV family - wider VCC range (2.0–5.5 V), slower max tpd (11.5 ns at 5 V), no 5.5-V input tolerance. | Better suited for pure 5-V systems; lacks 1.65-V operation and 5-V input compatibility needed in mixed-rail designs. | Select when cost sensitivity outweighs speed and voltage flexibility; verify timing margins at 5 V. |
| 74AHC139PW | AHC family - 2.0–5.5 V operation, 6.5 ns max tpd at 5 V, 5.5-V-tolerant inputs, TSSOP-16 package. | Higher drive strength (±8 mA @ 5 V) but less suitable below 2.0 V; identical pinout but different logic thresholds. | Prefer for 5-V-centric designs requiring marginally higher noise immunity; not drop-in for 1.8-V operation. |
Compared with SN74LV139ADR and 74AHC139PW, SN74LVC139ADGVR uniquely supports 1.65-V operation and 5.5-V input tolerance within the same device - enabling single-component voltage translation and low-power decoding where other alternatives require supplemental circuitry or sacrifice minimum supply voltage.
Availability
SN74LVC139ADGVR is available at Aetrix Electronics and suitable for memory address decoding, peripheral select logic, LED matrix row driving, and mixed-voltage signal routing requiring stable component supply and consistent TVSOP-16 footprint availability.
Supply support for SN74LVC139ADGVR 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and personal electronics markets.
The SN74LVC139ADGVR belongs to TI's LVC logic family, designed specifically for low-voltage, high-speed, mixed-supply digital interface applications with emphasis on voltage translation, reduced power, and PCB space efficiency.
FAQ
What is the minimum supply voltage required for reliable operation of the SN74LVC139ADGVR?
The SN74LVC139ADGVR operates reliably from 1.65 V to 3.6 V. At 1.65 V, all logic functions remain fully specified per datasheet - including propagation delay (max 20.6 ns), output drive (min ±4 mA), and input thresholds. This makes SN74LVC139ADGVR suitable for battery-powered and ultra-low-power systems where rail voltages dip near 1.8 V.
Can the SN74LVC139ADGVR accept 5-V input signals while powered from a 3.3-V supply?
Yes - the SN74LVC139ADGVR features 5.5-V-tolerant inputs, meaning it safely accepts 0–5.5 V logic levels regardless of VCC (1.65–3.6 V). This allows direct connection to 5-V microcontrollers, sensors, or FPGAs without external level shifters, making SN74LVC139ADGVR ideal for translating between legacy and modern logic families.
Does the SN74LVC139ADGVR have a thermal pad, and is it electrically connected?
No - the TVSOP-16 (DGV) package used by SN74LVC139ADGVR does not include an exposed thermal pad, and no internal connection exists to such a feature. Thermal dissipation relies on standard lead-frame conduction through pins 1 (VCC), 15–16 (GND), and PCB copper; θJA is rated at 120°C/W per datasheet.
How are the two decoders in the SN74LVC139ADGVR isolated from each other?
The two decoders in SN74LVC139ADGVR are fully independent - sharing only VCC and GND rails. Each has dedicated address inputs (1A/1B and 2A/2B), dedicated active-low enable (1G and 2G), and dedicated outputs (1Y0–1Y3 and 2Y0–2Y3). No internal signal coupling exists; enabling one decoder has zero effect on the other's outputs or timing.
Is the SN74LVC139ADGVR pin-compatible with other 16-pin decoder variants like SN74LS139 or SN74HC139?
No - SN74LVC139ADGVR uses the industry-standard 16-pin TVSOP (DGV) footprint, but its pinout differs from older families. For example, SN74LS139 (SOIC-16) places 2Y3 on pin 7, whereas SN74LVC139ADGVR assigns pin 7 to 1Y2. Always verify pin mapping using the official TI datasheet before board layout - SN74LVC139ADGVR is not a drop-in replacement for LS or HC variants.
SN74LVC139ADGVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 16-TFSOP (0.173", 4.40mm Width)
- 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-TVSOP
SN74LVC139ADGVR FAQ
1.How can I place an order for SN74LVC139ADGVR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC139ADGVR 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 SN74LVC139ADGVR reliable?
The price and inventory of SN74LVC139ADGVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC139ADGVR is usually 5 days.
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Once your SN74LVC139ADGVR 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 SN74LVC139ADGVR?
For technical support, including SN74LVC139ADGVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC139ADGVR requirements.
6.How does Aetrix verify that SN74LVC139ADGVR is sourced from the original manufacturer or authorized distributors?
All SN74LVC139ADGVR 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 SN74LVC139ADGVR meets industry standards.
7.What is the process for return or replacement of SN74LVC139ADGVR?
All SN74LVC139ADGVR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC139ADGVR, 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 SN74LVC139ADGVR part is unused and in its original packaging.
Return procedure for SN74LVC139ADGVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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