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Texas Instruments SN74LVC2G126DCUT
- Part No.:
- SN74LVC2G126DCUT
- Manufacturer:
- Texas Instruments
- Package:
- 8-VFSOP (0.091", 2.30mm Width)
- Datasheet:
-
SN74LVC2G126DCUT.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:23,430
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Product details
Overview
SN74LVC2G126DCUT from Texas Instruments is a dual 3-state noninverting bus buffer gate optimized for 1.65 V to 5.5 V operation, delivering ±24 mA output drive at 3.3 V, 4 ns max propagation delay, and 5.5 V-tolerant inputs - enabling voltage-level translation in high-speed digital interface circuits such as LED drivers and wired-OR logic networks.
For engineers reviewing the SN74LVC2G126DCUT datasheet, SN74LVC2G126DCUT pinout, SN74LVC2G126DCUT application, or SN74LVC2G126DCUT equivalent, key selection criteria include Ioff-enabled live insertion support, 3-state output control timing (ten/tdis), thermal resistance (227°C/W), and VSSOP-8 package compatibility with space-constrained PCB layouts.
Technical Context
The SN74LVC2G126DCUT implements two independent noninverting buffers, each with dedicated active-low output-enable (1OE, 2OE) control, supporting simultaneous bidirectional bus isolation. Its CMOS design ensures rail-to-rail output swing and low ICC (10 µA max) across –40°C to +125°C.
It features Ioff circuitry that disables outputs and blocks current flow when VCC = 0 V, enabling safe partial-power-down and hot-plug operation. Input tolerance up to 5.5 V allows down-translation from 5 V logic to 1.8 V/2.5 V/3.3 V domains without external level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 5.5 V - supports mixed-voltage system interfacing and single-supply flexibility |
| tpd (max) | 4 ns at VCC = 3.3 V - enables reliable operation in ≤100 MHz digital signal paths |
| IOL / IOH | ±24 mA at VCC = 3.3 V - drives multiple LVTTL loads or LEDs directly without buffering |
| Input Voltage Tolerance | Up to 5.5 V - permits 5 V inputs while operating at 1.8 V–3.3 V VCC for voltage translation |
| Ioff Current | ±10 µA max - prevents back-drive and leakage during power sequencing or hot-swap events |
| ESD Rating | 2000 V HBM, 1000 V CDM - meets industrial-grade robustness requirements |
| Operating Temp | –40°C to +125°C - qualified for automotive under-hood and industrial control environments |
Pinout & Package
VSSOP-8 (DCU) package: 2.30 mm × 2.00 mm body, 0.5 mm pitch, thin-profile surface-mount construction suitable for high-density routing and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE | Active-low enable input for Channel 1 | Drives 1Y high-impedance when low; ties to VCC via pulldown for power-up safety |
| 1A | Noninverting data input for Channel 1 | Accepts 0–5.5 V signals; level-translates down to VCC domain |
| 1Y | Noninverting buffered output for Channel 1 | 3-state capable; sinks/sours ±24 mA at 3.3 V |
| 2OE | Active-low enable input for Channel 2 | Independent control enables selective channel isolation in multi-bus systems |
| 2A | Noninverting data input for Channel 2 | Electrically identical to 1A; supports parallel or independent signal paths |
| 2Y | Noninverting buffered output for Channel 2 | Matches 1Y timing and drive; enables dual-channel fanout or redundancy |
| GND | Ground reference | Single ground pin shared by both channels; requires low-inductance PCB connection |
| VCC | Power supply | Supplies both buffers; requires local 0.1 µF bypass capacitor per TI layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| NanoFree™ packaging | VSSOP-8 footprint eliminates bond wires and die pad - reduces parasitic inductance for cleaner switching edges |
| Ioff partial-power-down | Enables live insertion and back-drive protection when VCC = 0 V - critical for modular systems and hot-swap controllers |
| 5.5 V-tolerant inputs | Eliminates need for external level translators when interfacing 5 V microcontrollers to 3.3 V or lower logic domains |
| Low ground bounce (VOLP < 0.8 V) | Minimizes noise coupling into adjacent signals during high-current switching - improves signal integrity in dense layouts |
| Latch-up immunity | >100 mA per JESD78 Class II - ensures reliability in noisy industrial or motor-control EMI environments |
Applications
| LED Driver Interface | Wired-OR Bus Isolation |
|---|---|
Use Scenario: Driving multiple indicator LEDs from a low-voltage MCU GPIO while maintaining fast turn-on/turn-off response. IC Role / Device Role / Timing Role: Noninverting buffer with 3-state control acts as current-boosting interface between 1.8 V/3.3 V controller and 5 V LED strings. Use Value: ±24 mA drive at 3.3 V eliminates external transistor stages; 4 ns tpd ensures precise PWM timing alignment. |
Use Scenario: Combining outputs from multiple microcontrollers onto a shared status bus without contention. IC Role / Device Role / Timing Role: Dual 3-state buffer provides independent enable-controlled signal gating for collision-free bus arbitration. Use Value: Independent OE pins allow deterministic bus ownership handoff; Ioff prevents backfeed during power transitions. |
| Industrial Sensor Interface | High-Speed Data Acquisition Front-End |
Use Scenario: Level-shifting analog-to-digital converter (ADC) control signals between 5 V sensor modules and 3.3 V FPGA logic. IC Role / Device Role / Timing Role: Down-translator buffer converts 5 V SPI clock and chip-select signals to 3.3 V domain while preserving timing margins. Use Value: 5.5 V-tolerant inputs accept full 5 V swing; 4 ns tpd maintains setup/hold timing for ≥25 MHz SPI clocks. |
Use Scenario: Buffering parallel data lines from high-speed ADCs to FPGA capture interfaces in test equipment. IC Role / Device Role / Timing Role: Dual-channel noninverting driver isolates ADC output bus from FPGA input loading, reducing signal distortion. Use Value: Low output impedance and matched propagation delay minimize skew across data lanes; 125°C rating supports enclosed chassis operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC2G125DCUT | Inverting output logic (Y = A̅) vs. noninverting (Y = A); otherwise identical electrical specs and pinout | Requires logic inversion in upstream/downstream logic; unsuitable where signal polarity must be preserved | Select SN74LVC2G125DCUT only when inverting function is explicitly required in the signal path |
| 74LVC2G126GW,125 (Nexperia) | Same function and VSSOP-8 package; slightly higher max tpd (4.5 ns @ 3.3 V) and lower Ioff (±5 µA) | Valid for cost-sensitive industrial designs where 0.5 ns timing margin is acceptable | Prefer SN74LVC2G126DCUT for timing-critical or high-reliability applications requiring TI's validated 4 ns spec and 100 mA latch-up rating |
Compared with SN74LVC2G126DCUT, SN74LVC2G125DCUT changes signal polarity but retains identical drive strength and translation capability, while 74LVC2G126GW,125 offers functional equivalence with minor timing and leakage trade-offs - making SN74LVC2G126DCUT optimal for precision noninverting buffering where TI qualification and 4 ns performance are mandatory.
Availability
SN74LVC2G126DCUT is available at Aetrix Electronics and suitable for industrial sensor interfaces, high-speed data acquisition systems, and LED driver circuits requiring stable component supply, extended temperature operation, and verified 3-state timing behavior.
Supply support for SN74LVC2G126DCUT 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 over 90 years of innovation in high-reliability IC design and manufacturing.
The SN74LVC2G126DCUT belongs to TI's LVC (Low-Voltage CMOS) logic family, engineered for low-power, high-speed interfacing across mixed-voltage systems - targeting industrial automation, test equipment, and communications infrastructure.
FAQ
What is the maximum operating temperature range for the SN74LVC2G126DCUT?
The SN74LVC2G126DCUT is rated for operation from –40°C to +125°C, meeting industrial and extended-temperature requirements. This specification is validated per JEDEC JESD78 latch-up testing and thermal characterization in the VSSOP-8 package, with RθJA = 227°C/W. The device maintains full electrical performance across this range, including 4 ns max tpd at 125°C when VCC = 3.3 V.
Does the SN74LVC2G126DCUT support voltage-level translation?
Yes, the SN74LVC2G126DCUT supports down-translation: its inputs tolerate up to 5.5 V regardless of VCC (1.65 V–5.5 V), allowing 5 V signals to safely drive the device while operating at 1.8 V, 2.5 V, or 3.3 V. This eliminates external level shifters in mixed-voltage interfaces - confirmed by TI's "Allows down voltage translation" feature description and VI absolute max rating of 6.5 V.
What is the purpose of the Ioff feature in the SN74LVC2G126DCUT?
The Ioff feature disables output buffers and blocks current flow when VCC = 0 V, preventing damaging back-drive current from live system buses into a powered-down device. For the SN74LVC2G126DCUT, this enables safe live insertion, partial-power-down operation, and hot-swap capability - verified by ±10 µA max Ioff current and explicit JESD78 Class II latch-up compliance.
Can the SN74LVC2G126DCUT drive LEDs directly?
Yes, the SN74LVC2G126DCUT can drive LEDs directly: each output delivers ±24 mA at VCC = 3.3 V, sufficient for standard indicator LEDs (typically 5–20 mA). Its 3-state control allows dynamic on/off switching, and VOLP < 0.8 V minimizes ground bounce during rapid LED toggling - as confirmed in TI's "Basic LED Driver" typical application schematic and electrical characteristics table.
Is the SN74LVC2G126DCUT pin-compatible with other packages in the same family?
No - the SN74LVC2G126DCUT uses the VSSOP-8 (DCU) package with 2.30 mm × 2.00 mm body and 0.5 mm pitch, differing mechanically from the SSOP-8 (DCT) and DSBGA-8 (YZP) variants. While all share identical pin functions and logic behavior, PCB footprints are not interchangeable; layout must match the DCU mechanical drawing (SLMS127) and tape-and-reel quadrant Q3 orientation.
SN74LVC2G126DCUT 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
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 1
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 32mA, 32mA
- Voltage - Supply:
- 1.65V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
SN74LVC2G126DCUT FAQ
1.How can I place an order for SN74LVC2G126DCUT through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC2G126DCUT 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 SN74LVC2G126DCUT reliable?
The price and inventory of SN74LVC2G126DCUT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC2G126DCUT is usually 5 days.
3.What payment methods are accepted for SN74LVC2G126DCUT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC2G126DCUT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC2G126DCUT?
SN74LVC2G126DCUT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC2G126DCUT 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 SN74LVC2G126DCUT?
For technical support, including SN74LVC2G126DCUT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC2G126DCUT requirements.
6.How does Aetrix verify that SN74LVC2G126DCUT is sourced from the original manufacturer or authorized distributors?
All SN74LVC2G126DCUT 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 SN74LVC2G126DCUT meets industry standards.
7.What is the process for return or replacement of SN74LVC2G126DCUT?
All SN74LVC2G126DCUT units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC2G126DCUT, 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 SN74LVC2G126DCUT part is unused and in its original packaging.
Return procedure for SN74LVC2G126DCUT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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