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Texas Instruments SN74LVC1G29DCURG4
- Part No.:
- SN74LVC1G29DCURG4
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 8-VFSOP (0.091", 2.30mm Width)
- Datasheet:
-
SN74LVC1G29DCURG4.pdf
- Description:
- IC DECODER/DEMUX 1X2:3 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,358
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Product details
Overview
SN74LVC1G29DCURG4 from Texas Instruments is a single 2-of-3 decoder/demultiplexer IC operating from 1.65 V to 5.5 V, featuring 3 active-low outputs (Y0–Y2), dual address inputs (A0/A1), and an active-low enable (G). It delivers 5.1 ns max propagation delay at 3.3 V and ±24 mA output drive, used in compact logic-level translation and address decoding for microcontroller peripherals.
For engineers reviewing the SN74LVC1G29DCURG4 datasheet, SN74LVC1G29DCURG4 pinout, SN74LVC1G29DCURG4 application, or SN74LVC1G29DCURG4 equivalent, key selection criteria include its VSSOP-8 (DCU) package, Ioff-enabled partial-power-down support, 10 µA max ICC, 3.3 V/5 V mixed-voltage interface capability, and guaranteed operation down to –40°C.
Technical Context
This device implements a positive-logic 2-input binary decoder with three complementary outputs, where only one output goes low per valid A1:A0 combination when G is asserted low. Its internal structure uses LVC-series CMOS logic with bus-hold circuitry disabled by default and no internal pull-ups.
It supports live insertion via Ioff, which disables outputs and blocks current backflow when VCC = 0 V. The design includes robust ESD protection (2000-V HBM, 200-V MM, 1000-V CDM) and meets JESD 78 Class II latch-up immunity (>100 mA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 5.5 V - Enables direct interfacing between 1.8 V, 2.5 V, 3.3 V, and 5 V logic domains without level shifters. |
| tpd (max) | 5.1 ns at VCC = 3.3 V - Supports high-speed address decoding in FPGA configuration, sensor multiplexing, and real-time control paths. |
| IOL / IOH | ±24 mA at VCC = 3.3 V - Drives multiple standard CMOS loads or small LEDs directly without external buffers. |
| Ioff Current | ±10 µA max - Prevents damaging back-current during hot-swap or partial power-down in modular systems. |
| Input Voltage Range | –0.5 V to 5.5 V - Accepts overvoltage-tolerant inputs up to 5.5 V regardless of VCC, simplifying mixed-supply board design. |
| Operating Temp | –40°C to +85°C - Qualified for industrial-grade embedded applications including motor control and instrumentation. |
| ICC (max) | 10 µA - Enables ultra-low static power in battery-backed or always-on subsystems like wake-on-event logic. |
Pinout & Package
VSSOP-8 (DCU) package: 2.3 mm × 2.0 mm footprint, 0.5 mm pitch, 0.9 mm max height, exposed pad not present, RoHS-compliant NiPdAu lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | G (Enable) | Active-low enable input; when high, all outputs Y0–Y2 are forced high-impedance (via internal disable path). |
| 2 | Y0 | Active-low decoded output corresponding to A1:A0 = 00; sinks current when selected and enabled. |
| 3 | A0 | LSB address input; sampled synchronously with G to determine output activation pattern. |
| 4 | GND | Ground reference for logic and output stages; must be connected before VCC for safe power sequencing. |
| 5 | Y2 | Active-low decoded output corresponding to A1:A0 = 11; provides third decode state for ternary selection. |
| 6 | A1 | MSB address input; combined with A0 to select one of three mutually exclusive low outputs. |
| 7 | Y1 | Active-low decoded output corresponding to A1:A0 = 01; enables sequential channel selection in 3-channel systems. |
| 8 | VCC | Supply voltage input; powers internal logic and output drivers; decoupling capacitor required within 1 cm. |
Key Features
| Feature | Design Value |
|---|---|
| NanoFree™ packaging | Dies-as-package construction eliminates bond wires and mold compound, reducing parasitic inductance and enabling 0.5 mm pitch routing. |
| Ioff partial-power-down | Automatically isolates inputs/outputs when VCC = 0 V, allowing safe insertion into live backplanes or hot-swappable modules. |
| Voltage translation support | Accepts 5.5 V-tolerant inputs while operating at 1.65 V VCC, enabling direct connection to legacy 5 V buses without external translators. |
| Low ground bounce (VOLP) | <0.8 V at VCC = 3.3 V - Minimizes noise coupling into shared ground planes in dense PCB layouts. |
| High noise immunity | VIH/VIL thresholds scale with VCC (e.g., VIH = 0.7×VCC at 4.5–5.5 V), ensuring reliable switching across supply variations. |
Applications
| Industrial Sensor Hub | USB-C Port Controller Logic |
|---|---|
|
Use Scenario: Selecting among three analog sensor signal paths (temperature, humidity, pressure) feeding a shared ADC channel. IC Role / Device Role / Timing Role: 2-of-3 decoder enabling one sensor's analog switch while disabling others to prevent crosstalk. Use Value: Eliminates need for discrete logic gates or larger decoder ICs, saving 2.3 mm² board area and reducing BOM count. |
Use Scenario: Routing USB-C CC line configuration signals to alternate mode controllers based on cable orientation detection. IC Role / Device Role / Timing Role: Demultiplexer selecting one of three alternate mode protocol handlers (DisplayPort, PCIe, Thunderbolt). Use Value: Provides deterministic, glitch-free selection with <5.1 ns delay-critical for maintaining USB-C specification timing margins. |
| Motor Drive Fault Indicator | IoT Edge Node Wake Logic |
|
Use Scenario: Driving three separate LED indicators for overcurrent, overtemperature, and undervoltage fault conditions. IC Role / Device Role / Timing Role: Active-low decoder output directly sinking LED current without external transistors. Use Value: Leverages ±24 mA drive strength to eliminate 3x discrete MOSFETs, reducing component count and thermal footprint. |
Use Scenario: Enabling one of three low-power subsystems (BLE radio, LoRa transceiver, cellular modem) based on wake event source. IC Role / Device Role / Timing Role: Decoder output asserting enable signal to respective PMIC, with Ioff preventing leakage during sleep. Use Value: Achieves sub-10 µA system standby current by leveraging 10 µA max ICC and Ioff isolation during deep sleep modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar decoder/demultiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G139DCUR | 2-to-4 decoder with active-low outputs; requires one additional input pin and provides fourth output. | Used where four-channel selection is needed instead of three; occupies same DCU package but adds routing complexity. | Select when expanding from 3- to 4-channel systems; verify layout compatibility due to different pin mapping (G1/G2 enable scheme). |
| 74LVC1G238DCUR | Single 3-to-8 decoder; larger die, higher ICC (20 µA), same VCC range and Ioff support. | Suitable for future-proofing where more than three outputs may be required; consumes same PCB area but higher static power. | Choose if system architecture anticipates >3 decode states; note increased propagation delay (6.5 ns @ 3.3 V) versus SN74LVC1G29DCURG4. |
Compared with SN74LVC1G139DCUR and 74LVC1G238DCUR, SN74LVC1G29DCURG4 offers optimal minimalism for exactly three-output selection-delivering lowest ICC, smallest propagation delay, and tightest pin count while retaining full Ioff and voltage translation capability.
Availability
SN74LVC1G29DCURG4 is available at Aetrix Electronics and suitable for industrial sensor hubs, USB-C port controllers, motor drive fault indicators, and IoT edge node wake logic requiring stable component supply across extended temperature ranges.
Supply support for SN74LVC1G29DCURG4 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 focused on analog, embedded processing, and connectivity technologies, serving industrial, automotive, and communications markets since 1930.
SN74LVC1G29DCURG4 belongs to TI's LVC logic family-designed for low-voltage, high-speed, mixed-signal interface applications where space-constrained PCBs demand minimal footprint, low power, and robust voltage translation.
FAQ
What is the function of the G (enable) pin on the SN74LVC1G29DCURG4?
The G pin is an active-low enable input. When G is low, the SN74LVC1G29DCURG4 decodes A1:A0 to assert exactly one of Y0–Y2 low; when G is high, all three outputs go high-impedance. This allows dynamic channel gating in time-multiplexed systems without affecting address lines.
Does the SN74LVC1G29DCURG4 support 5 V tolerant inputs while operating at 1.8 V VCC?
Yes. The SN74LVC1G29DCURG4 accepts input voltages up to 5.5 V independent of VCC, enabling direct connection to 5 V microcontrollers or sensors while powered from a 1.8 V rail-no external level shifter required.
Can the SN74LVC1G29DCURG4 be used in hot-swap applications?
Yes. Its Ioff feature disables all outputs and blocks current flow when VCC = 0 V, making SN74LVC1G29DCURG4 suitable for live insertion into powered backplanes or modular systems where cards are replaced without powering down the host.
What is the maximum output drive capability of the SN74LVC1G29DCURG4 at 3.3 V?
At VCC = 3.3 V, the SN74LVC1G29DCURG4 delivers ±24 mA per output-sufficient to directly drive LEDs, small relays, or multiple 74LVC inputs without buffering, verified under IOL = 24 mA and IOH = –24 mA test conditions.
Is the SN74LVC1G29DCURG4 pin-compatible with other VSSOP-8 logic devices?
No. While SN74LVC1G29DCURG4 uses the standard VSSOP-8 (DCU) mechanical footprint, its pinout (G, Y0, A0, GND, Y2, A1, Y1, VCC) is unique to this decoder function and differs from common logic families like inverters or buffers-PCB layout must match this specific assignment.
SN74LVC1G29DCURG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 8-VFSOP (0.091", 2.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Type:
- Decoder/Demultiplexer
- Circuit:
- 1 x 2:3
- Independent Circuits:
- 1
- Current - Output High, Low:
- 32mA, 32mA
- Voltage Supply Source:
- Single Supply
- Voltage - Supply:
- 1.65V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
SN74LVC1G29DCURG4 FAQ
1.How can I place an order for SN74LVC1G29DCURG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC1G29DCURG4 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 SN74LVC1G29DCURG4 reliable?
The price and inventory of SN74LVC1G29DCURG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC1G29DCURG4 is usually 5 days.
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Once your SN74LVC1G29DCURG4 order is processed, you will receive an email with the shipment details and tracking number.
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5.How can I obtain technical support or documentation for SN74LVC1G29DCURG4?
For technical support, including SN74LVC1G29DCURG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC1G29DCURG4 requirements.
6.How does Aetrix verify that SN74LVC1G29DCURG4 is sourced from the original manufacturer or authorized distributors?
All SN74LVC1G29DCURG4 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 SN74LVC1G29DCURG4 meets industry standards.
7.What is the process for return or replacement of SN74LVC1G29DCURG4?
All SN74LVC1G29DCURG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC1G29DCURG4, 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 SN74LVC1G29DCURG4 part is unused and in its original packaging.
Return procedure for SN74LVC1G29DCURG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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