My Inquiry
My Account
Texas Instruments SN74LVC1G29DCUT
- Part No.:
- SN74LVC1G29DCUT
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 8-VFSOP (0.091", 2.30mm Width)
- Datasheet:
-
SN74LVC1G29DCUT.pdf
- Description:
- IC DECODER/DEMUX 1X2:3 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:781
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN74LVC1G29DCUT 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 24-mA output drive at 3.3 V and supports voltage-level translation across supply domains. It is used in low-pin-count address decoding and signal routing in portable microcontroller peripherals.
For engineers reviewing the SN74LVC1G29DCUT datasheet, SN74LVC1G29DCUT pinout, SN74LVC1G29DCUT application, or SN74LVC1G29DCUT equivalent, this page provides verified functional identity, DCU-package pin mapping, Ioff-enabled partial-power-down support, propagation delay (5.1 ns @ 3.3 V), and validated alternatives for 2-of-3 decode logic replacement.
Technical Context
The SN74LVC1G29DCUT implements positive-logic 2-of-3 decoding: with G low, exactly one output goes low based on A1/A0 (00→Y0, 01→Y1, 10→Y2); all outputs go high when G is high. Its Ioff circuitry disables outputs during power-down, blocking back-drive current and enabling live insertion.
It operates across 1.65–5.5 V VCC, accepts input voltages up to 5.5 V regardless of VCC, and maintains ±24-mA drive capability at 3.3 V. Output ground bounce (VOLP) and VOH undershoot (VOHV) are characterized at 0.8 V and >2 V respectively under 3.3-V/25°C conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 5.5 V - Enables direct interface with 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 selection in real-time MCU peripheral decoding. |
| Ioff Support | Enabled - Prevents damaging current flow during partial power-down, critical for hot-swap and mixed-voltage board designs. |
| Output Drive | ±24 mA at 3.3 V - Sufficient to directly drive multiple standard CMOS inputs or small LEDs without buffering. |
| Input Voltage Tolerance | Up to 5.5 V - Allows interfacing with higher-voltage control signals even when VCC = 1.8 V. |
| ICC (Max) | 10 µA - Ultra-low quiescent current enables use in battery-powered always-on subsystems. |
| ESD Rating | 2000-V HBM - Meets industrial-grade robustness requirements for handling and board assembly. |
Pinout & Package
VSSOP (DCU) 8-pin package: 2.4 mm × 2.2 mm footprint, 0.5-mm pitch, 0.9-mm max height, exposed pad not present, RoHS-compliant NIPDAU/SN finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | G (Enable, active-low) | Global enable controlling Y0/Y1/Y2 activation; low enables decode function, high forces all outputs high. |
| 2 | Y0 (Output 0) | Active-low decoded output asserted when A1A0 = 00 and G = low. |
| 3 | A0 (Address bit 0) | LSB of 2-bit address input; sampled synchronously with G to determine active output. |
| 4 | GND | Ground reference for all internal logic and output drivers; must be connected to system ground plane. |
| 5 | Y2 (Output 2) | Active-low decoded output asserted when A1A0 = 10 and G = low. |
| 6 | A1 (Address bit 1) | MSB of 2-bit address input; combined with A0 to select one of three outputs. |
| 7 | Y1 (Output 1) | Active-low decoded output asserted when A1A0 = 01 and G = low. |
| 8 | VCC | Supply voltage input (1.65–5.5 V); powers internal logic and output stages; requires local 100-nF decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| NanoFree™ packaging | Die-as-package construction reduces footprint to 2.4 mm × 2.2 mm - ideal for space-constrained portable PCBs. |
| Ioff partial-power-down | Outputs enter high-impedance state when VCC = 0 V - prevents back-current into powered sections during sequencing. |
| Voltage translation | Inputs tolerate 5.5 V while VCC ≥ 1.65 V - eliminates external translators when interfacing 5-V sensors to 1.8-V MCUs. |
| Low dynamic noise | VOLP < 0.8 V and VOHV > 2 V at 3.3 V - minimizes switching-induced supply rail disturbance in noise-sensitive analog sections. |
| High ESD immunity | 2000-V HBM rating - ensures reliability during automated assembly and field handling without additional protection. |
Applications
| Industrial Sensor Hub | Portable MCU Peripherals |
|---|---|
|
Use Scenario: Selecting between three analog sensor channels (temperature, humidity, pressure) using a 2-bit GPIO port on an ultra-low-power MCU. IC Role / Device Role / Timing Role: SN74LVC1G29DCUT acts as a 2-of-3 address decoder, enabling one sensor's output line at a time to a shared ADC input. Use Value: Reduces GPIO count by 1 vs. discrete transistor switches; supports 1.8-V MCU operation while accepting 3.3-V sensor outputs. |
Use Scenario: Routing wake-up signals from three different sources (button, motion sensor, timer) to a single interrupt pin on a wearable SoC. IC Role / Device Role / Timing Role: SN74LVC1G29DCUT functions as a demultiplexer, asserting one of three open-drain interrupt lines based on encoded source ID. Use Value: Enables source identification with minimal pin usage; Ioff prevents leakage when SoC is in deep sleep and VCC is partially ramped. |
| Automotive Body Control | IoT Edge Node Expansion |
|
Use Scenario: Controlling three LED status indicators (power, fault, communication) from two MCU GPIOs in a LIN node module. IC Role / Device Role / Timing Role: SN74LVC1G29DCUT serves as a 3-output decoder driving LEDs directly via its 24-mA sink capability. Use Value: Eliminates need for external FETs or current-limiting resistors per channel; operates reliably across automotive temperature range (–40°C to +85°C). |
Use Scenario: Expanding a 2-pin I²C host to manage three separate I²C slave devices (EEPROM, RTC, sensor) using address-select lines. IC Role / Device Role / Timing Role: SN74LVC1G29DCUT generates chip-select signals that gate SCL/SDA paths via analog switches or bus buffers. Use Value: Adds deterministic 3-device addressing with sub-6-ns propagation delay - avoids timing skew issues seen with RC-based solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 2-of-3 decoder/demultiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G139DCUR | 2-line-to-4-line decoder with active-low outputs; includes dual enable (G1/G2) and inverted outputs (Y0–Y3). | Provides 4 outputs instead of 3; requires additional logic to mask one output if strict 2-of-3 behavior is needed. | Choose when future expansion to 4-channel selection is anticipated or when dual-enable control is required. |
| 74LVC1G238DCUR | 1-of-4 decoder with active-high outputs and single enable; no Ioff support; identical DCU package and pinout except output polarity. | Requires external inverters to match SN74LVC1G29DCUT's active-low output behavior; lacks live-insertion capability. | Choose only if active-high outputs are acceptable and partial-power-down is not required in the system architecture. |
Compared with SN74LVC1G29DCUT, SN74LVC1G139DCUR offers greater output flexibility but adds complexity for 3-channel use, while 74LVC1G238DCUR sacrifices Ioff and output polarity compatibility - making SN74LVC1G29DCUT the optimal choice for compact, power-aware 2-of-3 decoding.
Availability
SN74LVC1G29DCUT is available at Aetrix Electronics and suitable for industrial sensor hubs, portable MCU peripherals, automotive body control modules, and IoT edge node expansion requiring stable component supply and guaranteed long-term sourcing.
Supply support for SN74LVC1G29DCUT 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 logic solutions, with decades of expertise in low-voltage, high-reliability logic families.
The SN74LVC1G29DCUT belongs to TI's LVC (Low-Voltage CMOS) logic series, designed specifically for space-constrained, multi-voltage digital systems requiring robust performance, low power, and seamless voltage translation.
FAQ
What is the function of the G pin on the SN74LVC1G29DCUT?
The G pin on the SN74LVC1G29DCUT is the active-low enable input. When G is low, the device performs 2-of-3 decoding: one of Y0–Y2 goes low based on A1/A0. When G is high, all outputs (Y0, Y1, Y2) are forced high regardless of A1/A0 states. This enables global output disable for power gating or bus isolation in the SN74LVC1G29DCUT application.
Does the SN74LVC1G29DCUT support partial power-down operation?
Yes, the SN74LVC1G29DCUT includes Ioff circuitry that disables all outputs when VCC = 0 V, preventing back-current flow from powered sections into the unpowered device. This feature is explicitly documented in the datasheet and enables safe live insertion, hot-swap, and mixed-rail sequencing - a key design advantage of the SN74LVC1G29DCUT over non-Ioff logic variants.
What package type is used for the SN74LVC1G29DCUT?
The SN74LVC1G29DCUT uses the VSSOP (DCU) package: an 8-pin, 0.5-mm pitch, 2.4 mm × 2.2 mm footprint with 0.9-mm maximum height. This package is distinct from the SSOP (DCT) and DSBGA (YZP) variants of the same family and is confirmed in TI's PACKAGE OPTION ADDENDUM for orderable part SN74LVC1G29DCUT.
Can the SN74LVC1G29DCUT interface between 5-V and 1.8-V logic domains?
Yes, the SN74LVC1G29DCUT supports down-translation: its inputs accept voltages up to 5.5 V independent of VCC, allowing 5-V control signals to safely drive A0, A1, or G even when VCC = 1.8 V. Outputs swing rail-to-rail (0 V to VCC), so Y0–Y2 are compatible with 1.8-V receivers when VCC = 1.8 V - a core capability of the SN74LVC1G29DCUT.
What is the maximum propagation delay for the SN74LVC1G29DCUT at 3.3 V?
The maximum propagation delay (tpd) for the SN74LVC1G29DCUT is 5.1 ns at VCC = 3.3 V, CL = 15 pF, and TA = 25°C, as specified in the Switching Characteristics table of the official datasheet. This value applies to transitions from any input (A0, A1, or G) to any output (Y0, Y1, or Y2) and is a guaranteed limit - not a typical value - making it suitable for timing-critical SN74LVC1G29DCUT implementations.
SN74LVC1G29DCUT 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:
- Active
- 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
SN74LVC1G29DCUT FAQ
1.How can I place an order for SN74LVC1G29DCUT through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC1G29DCUT 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 SN74LVC1G29DCUT reliable?
The price and inventory of SN74LVC1G29DCUT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC1G29DCUT is usually 5 days.
3.What payment methods are accepted for SN74LVC1G29DCUT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC1G29DCUT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC1G29DCUT?
SN74LVC1G29DCUT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC1G29DCUT 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 SN74LVC1G29DCUT?
For technical support, including SN74LVC1G29DCUT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC1G29DCUT requirements.
6.How does Aetrix verify that SN74LVC1G29DCUT is sourced from the original manufacturer or authorized distributors?
All SN74LVC1G29DCUT 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 SN74LVC1G29DCUT meets industry standards.
7.What is the process for return or replacement of SN74LVC1G29DCUT?
All SN74LVC1G29DCUT units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC1G29DCUT, 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 SN74LVC1G29DCUT part is unused and in its original packaging.
Return procedure for SN74LVC1G29DCUT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74LVC1G29DCUT Tags
-
SN74HC138DR
Texas Instruments
-
TC7SB3157CFU,LF(CT
Toshiba Semiconductor and Storage
-
74CBTLV3257PW,118
Nexperia USA Inc.
-
SN74CBTLV3257PWR
Texas Instruments
-
74CBTLV3257GUX
Nexperia USA Inc.
-
74HC154BQ,118
Nexperia USA Inc.
-
P3S0200GMX
NXP USA Inc.
-
SN74CB3Q3245PWR
Texas Instruments
-
SN74CB3Q3257RGYR
Texas Instruments
-
TCA9543APWR
Texas Instruments
-
TCA9546APWR
Texas Instruments
-
SN74HC138N
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
