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Texas Instruments SN74LVC1G126DRLR
- Part No.:
- SN74LVC1G126DRLR
- Manufacturer:
- Texas Instruments
- Package:
- SOT-553
- Datasheet:
-
SN74LVC1G126DRLR.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V SOT5
- Quantity:
- Payment:
- Shipping:
Inventory:2,428
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Product details
Overview
SN74LVC1G126 from Texas Instruments is a single 3-state bus buffer gate used for signal isolation and bidirectional bus control in low-voltage digital systems. It features true non-inverting logic, ±24mA output drive at 3.3V, 3.7ns max propagation delay at 3.3V, and over-voltage tolerant inputs up to 5.5V - enabling level translation from 5V logic to 3.3V/1.8V domains in industrial I/O and data acquisition interfaces.
For engineers reviewing the SN74LVC1G126 datasheet, SN74LVC1G126 pinout, SN74LVC1G126 application, or SN74LVC1G126 equivalent, key selection criteria include its Ioff-enabled live insertion capability, rail-to-rail input tolerance, sub-4ns timing at 3.3V, ultra-low 10μA ICC, and compatibility with SOT-5X3 (DRL) packaging for space-constrained PCB layouts.
Technical Context
The SN74LVC1G126 implements a CMOS-based non-inverting buffer with active-high 3-state enable (OE), where Y = A when OE = HIGH and Y = high-impedance when OE = LOW. Its balanced CMOS output stage supports symmetrical sourcing/sinking (±24mA @ 3.3V) and operates across 1.65V–5.5V VCC, with inputs rated to 5.5V independent of supply voltage.
It integrates partial-power-down (Ioff) protection, allowing safe operation during hot-swap or partial system power-down, and includes clamp diodes on all I/O pins for ESD robustness (2000V HBM). The device meets JESD78 Class II latch-up immunity (>100mA) and supports –40°C to 125°C ambient operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65V to 5.5V - enables interoperability across 1.8V, 2.5V, 3.3V, and 5V logic families without level shifters |
| tpd (max) | 3.7ns at VCC = 3.3V, CL = 15pF - supports >200MHz data rates in short-bus applications |
| Output Drive | ±24mA at VCC = 3.3V - sufficient to drive multiple LVC loads or moderate capacitive loads (≤50pF) |
| Ioff Current | ±10μA max - prevents back-drive current flow when VCC = 0V, critical for live-insertion systems |
| Input Voltage Range | –0.5V to 5.5V - allows 5V-tolerant inputs on 1.8V/3.3V supplies, enabling down-translation |
| ICC (max) | 10μA - ensures negligible static power draw in battery-backed or always-on monitoring circuits |
| ESD Rating | 2000V HBM - exceeds JEDEC JS-001 requirements for robust handling in automated assembly |
Pinout & Package
SOT-5X3 (DRL) package: 5-pin, 1.6mm × 1.2mm body, 2.1mm × 1.3mm footprint, 0.5mm pitch, thermally enhanced for compact routing and thermal relief in dense layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A | Data Input | True logic input; accepts voltages up to 5.5V regardless of VCC - enables mixed-voltage interface design |
| OE | Active-High Output Enable | Drives Y into high-impedance when LOW; must be tied to GND during power-up/down to maintain Z-state |
| GND | Ground Reference | Primary return path for all I/O and supply currents; requires low-inductance connection to minimize noise coupling |
| Y | 3-State Output | Non-inverting buffered output; high-impedance state isolates downstream circuitry during bus contention or standby |
| VCC | Power Supply | Single supply pin supporting 1.65V–5.5V; bypass capacitor (0.1μF) required adjacent to pin for stable switching |
Key Features
| Feature | Design Value |
|---|---|
| NanoFree™ DRL package | 1.6mm × 1.2mm body size - eliminates bond wires and reduces parasitic inductance vs. traditional SOT-23 |
| Ioff support | Enables live insertion and partial power-down without damaging back-drive current to powered subsystems |
| Rail-to-rail input tolerance | Inputs accept –0.5V to 5.5V - simplifies interfacing with legacy 5V peripherals in modern low-voltage systems |
| Low dynamic power | Cpd = 19pF at 3.3V - minimizes switching power in high-frequency clock/data buffering applications |
| High-speed timing | 3.7ns tpd at 3.3V/15pF - meets setup/hold margins for 100+ MHz parallel bus interfaces |
Applications
| Cable Modem Termination Systems | High-Speed Data Acquisition |
|---|---|
Use Scenario: Isolating upstream/downstream data paths between analog front-end and digital baseband processor under dynamic load conditions. IC Role / Device Role / Timing Role: 3-state bus buffer controlling signal direction and enabling time-multiplexed channel access on shared data lines. Use Value: Ioff prevents back-drive during partial power-down of RF section; 5.5V-tolerant A input accepts analog-digital converter outputs directly. |
Use Scenario: Buffering digitized sensor data from ADCs to FPGA or microcontroller while maintaining signal integrity across PCB traces. IC Role / Device Role / Timing Role: Low-latency, non-inverting line driver ensuring clean edge transitions and minimal skew on multi-channel parallel buses. Use Value: 3.7ns tpd guarantees sub-10ns total path delay; ±24mA drive sustains signal levels into 50pF trace + receiver capacitance. |
| Military Radar Signal Processing | Motor Control Interface |
Use Scenario: Enabling/disabling high-speed serial links between radar DSP cores and FPGA-based beamforming engines in harsh-temperature environments. IC Role / Device Role / Timing Role: Temperature-stable 3-state gate managing data flow arbitration on shared memory-mapped buses operating from –40°C to 125°C. Use Value: Guaranteed operation across full military temp range; latch-up immunity >100mA protects against transient-induced faults in EMI-heavy platforms. |
Use Scenario: Interfacing microcontroller GPIOs to isolated gate drivers or analog monitoring ICs in high-voltage motor inverters. IC Role / Device Role / Timing Role: Level-translating buffer isolating low-voltage control logic from noisy high-side switching domains. Use Value: 5.5V-tolerant inputs accept feedback signals from isolated amplifiers; 10μA ICC minimizes quiescent power in always-on safety monitors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G125DRLR | Inverting logic (Y = NOT A) vs. non-inverting; otherwise identical electrical specs and pinout | Requires logic inversion in signal path - unsuitable where polarity must be preserved (e.g., clock forwarding, direct data pass-through) | Select SN74LVC1G125DRLR only when system-level inversion is acceptable or required for timing alignment |
| 74LVC1G126GW,125 | NXP variant in SC-70 (DCK) package; same function but 2.0mm × 2.1mm footprint and higher RθJA (371°C/W) | Less thermally efficient in high-density layouts; not drop-in compatible due to different pad layout and thermal pad absence | Choose 74LVC1G126GW,125 only if SC-70 is mandated by existing board stack-up or procurement constraints |
Compared with SN74LVC1G126DRLR, SN74LVC1G125DRLR provides identical performance with inverted logic - useful for complementary signaling but requiring redesign of upstream logic. The NXP 74LVC1G126GW,125 offers functional equivalence in a larger, less thermally optimized package, limiting use in space- and thermal-critical designs.
Availability
SN74LVC1G126DRLR is available at Aetrix Electronics and suitable for cable modem termination systems, high-speed data acquisition, military radar processing, and motor control interface applications requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across temperature extremes.
Supply support for SN74LVC1G126DRLR 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 heritage in high-reliability logic families and automotive-grade qualification.
The SN74LVC1G126 belongs to TI's LVC (Low-Voltage CMOS) logic portfolio, designed specifically for low-power, high-speed interfacing in portable, industrial, and communications equipment operating across wide voltage and temperature ranges.
FAQ
What is the maximum operating temperature for SN74LVC1G126DRLR?
The SN74LVC1G126DRLR is fully specified from –40°C to +125°C ambient temperature. Electrical characteristics including propagation delay, output drive, and leakage current are guaranteed across this full industrial/military range, making SN74LVC1G126DRLR suitable for under-hood automotive modules and radar front-ends where thermal resilience is critical.
Does SN74LVC1G126DRLR support 5V-tolerant inputs when powered from 1.8V?
Yes - SN74LVC1G126DRLR accepts input voltages up to 5.5V regardless of VCC level, enabling direct connection to 5V peripherals while operating from 1.8V. This over-voltage tolerance is implemented via internal protection circuitry without positive clamp diodes, and is explicitly validated in the Recommended Operating Conditions table for SN74LVC1G126DRLR.
Can SN74LVC1G126DRLR be used for hot-swap applications?
Yes - SN74LVC1G126DRLR includes Ioff circuitry that disables all outputs when VCC = 0V, preventing back-drive current from live backplane traces into unpowered sections. This feature is tested per JESD78 and allows safe insertion/removal of boards containing SN74LVC1G126DRLR in partially powered systems.
What is the recommended bypass capacitor for SN74LVC1G126DRLR?
Texas Instruments specifies a 0.1μF ceramic capacitor placed as close as possible to the VCC and GND pins of SN74LVC1G126DRLR. For improved noise suppression across frequency bands, a parallel 1μF capacitor is also recommended. Layout guidelines emphasize short, wide traces and an unbroken ground plane beneath the SN74LVC1G126DRLR footprint.
Is SN74LVC1G126DRLR pin-compatible with other 5-pin SOT logic buffers?
SN74LVC1G126DRLR uses the SOT-5X3 (DRL) package with standardized 0.5mm pitch and pin 1 marking. While electrically identical to SN74LVC1G125DRLR, it is not pin-compatible with SC-70 (DCK) or SOT-23 (DBV) variants due to differing pinouts - e.g., OE is on pin 1 in DRL but pin 3 in DBV. Always verify mechanical drawings before PCB layout.
SN74LVC1G126DRLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- SOT-553
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 1
- 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:
- SOT-5
SN74LVC1G126DRLR FAQ
1.How can I place an order for SN74LVC1G126DRLR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC1G126DRLR 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 SN74LVC1G126DRLR reliable?
The price and inventory of SN74LVC1G126DRLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC1G126DRLR is usually 5 days.
3.What payment methods are accepted for SN74LVC1G126DRLR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC1G126DRLR transactions.
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4.How is shipping managed for SN74LVC1G126DRLR?
SN74LVC1G126DRLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC1G126DRLR 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 SN74LVC1G126DRLR?
For technical support, including SN74LVC1G126DRLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC1G126DRLR requirements.
6.How does Aetrix verify that SN74LVC1G126DRLR is sourced from the original manufacturer or authorized distributors?
All SN74LVC1G126DRLR 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 SN74LVC1G126DRLR meets industry standards.
7.What is the process for return or replacement of SN74LVC1G126DRLR?
All SN74LVC1G126DRLR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC1G126DRLR, 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 SN74LVC1G126DRLR part is unused and in its original packaging.
Return procedure for SN74LVC1G126DRLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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