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Texas Instruments SN74AUC1G126YEPR
- Part No.:
- SN74AUC1G126YEPR
- Manufacturer:
- Texas Instruments
- Package:
- 5-XFBGA, DSBGA
- Datasheet:
-
SN74AUC1G126YEPR.pdf
- Description:
- IC BUFFER NON-INVERT 2.7V 5DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,615
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Product details
Overview
SN74AUC1G126YEPR from Texas Instruments is a single-channel CMOS bus buffer gate with tri-state output, designed for 1.65–1.95 V operation and 3.6-V I/O tolerant inputs. It delivers ±8 mA output drive at 1.8 V, achieves 1.6 ns typical propagation delay (CL = 15 pF), and supports partial power-down via Ioff. It is used in portable audio interfaces and LED indicator circuits where low-voltage logic translation and fast edge control are required.
For engineers reviewing the SN74AUC1G126YEPR datasheet, SN74AUC1G126YEPR pinout, SN74AUC1G126YEPR application, or SN74AUC1G126YEPR equivalent, key selection criteria include its 1.8-V optimized timing, 3.6-V input tolerance, NanoFree™ DSBGA-5 package footprint, and Ioff-enabled back-drive protection in mixed-rail systems.
Technical Context
The SN74AUC1G126YEPR implements a noninverting buffer with active-high output enable (OE), where Y = A when OE = H, and Y = Z (high-impedance) when OE = L. Its balanced CMOS push-pull output stage enables symmetrical sourcing/sinking capability up to ±8 mA at 1.8 V.
It features overvoltage-tolerant inputs (up to 3.6 V), Ioff circuitry that disables I/O leakage to ±10 µA when VCC = 0 V, and sub-1-V operational capability down to 0.8 V. The device complies with JESD78 Class II latch-up immunity (>100 mA) and JESD22 ESD ratings (±2000-V HBM, ±1000-V CDM).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 0.8 V to 2.7 V; fully functional at 1.65–1.95 V for optimal speed/power trade-off |
| tpd (A→Y) | 1.6 ns typical at 1.8 V, CL = 15 pF; enables high-speed signal buffering in compact digital interfaces |
| IOH/IOL | ±8 mA at 1.65 V; sufficient to directly drive LEDs or light capacitive loads without external amplification |
| Ioff | ±10 µA max at VCC = 0 V; prevents damaging current backflow during partial power-down sequences |
| VI Input Tolerance | Up to 3.6 V regardless of VCC; allows level-shifting from 3.3-V or 2.5-V sources into 1.8-V domains |
| ICC | 10 µA max; ultra-low quiescent current supports battery-powered portable devices |
| ESD HBM | ±2000 V; meets industrial-grade robustness requirements without external protection components |
Pinout & Package
SN74AUC1G126YEPR uses Texas Instruments' NanoFree™ DSBGA-5 package (1.388 mm × 0.888 mm), where the silicon die serves as the package substrate-enabling minimal board area and thermal resistance (RθJA = 132°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A | Logic input | Noninverting data input; accepts 0.8–3.6 V signals; requires VIH ≥ 0.65×VCC for reliable high detection |
| OE | Output enable (active-high) | Drives output Y to high-impedance when low; must be pulled to GND via resistor during power-up to ensure safe default state |
| Y | Tri-state buffered output | Noninverted replica of A when OE = H; presents >10⁹ Ω impedance when OE = L; supports bus sharing |
| VCC | Positive supply | Core logic supply; bypass with 0.1-µF capacitor placed adjacent to pin to suppress switching noise |
| GND | Ground reference | Return path for all I/O and supply currents; must be low-inductance connection to minimize ground bounce |
Key Features
| Feature | Design Value |
|---|---|
| NanoFree™ DSBGA-5 packaging | Eliminates leadframe and mold compound-reducing size to 1.388 mm × 0.888 mm and improving thermal performance |
| 3.6-V I/O tolerant inputs | Enables direct interfacing with higher-voltage controllers (e.g., 3.3-V MCU GPIO) without level-shifters |
| Ioff partial power-down support | Prevents back-current flow when VCC is off, protecting powered subsystems in multi-rail embedded designs |
| Sub-1-V operability | Functions down to 0.8 V VCC-supports ultra-low-power modes and future low-voltage SoC integration |
| 2.5 ns max tpd at 1.8 V | Meets timing budgets for high-speed serial control lines (e.g., I²C pull-up assist, display interface strobes) |
Applications
| LED Indicator Driver | Low-Voltage Bus Isolation |
|---|---|
|
Use Scenario: Driving status LEDs in portable audio docks or SSD enclosures where main logic runs at 1.8 V but LED forward voltage exceeds rail. IC Role / Device Role / Timing Role: Noninverting buffer with tri-state output acting as current-sourcing driver; enables/disables LED via OE from MCU GPIO. Use Value: ±8 mA drive at 1.8 V eliminates need for discrete transistor stage; 3.6-V input tolerance allows direct connection to 3.3-V MCU outputs. |
Use Scenario: Isolating debug or configuration buses between 1.8-V baseband processors and 3.3-V peripheral modules in tablets or enterprise handhelds. IC Role / Device Role / Timing Role: Direction-agnostic bus buffer enabling bidirectional signal routing under OE control; prevents contention during hot-plug events. Use Value: Ioff protection ensures no backfeed when one side powers down; 1.6 ns tpd preserves signal integrity on 25-MHz control buses. |
| Portable Audio Data Path | SSD Power Sequencing Interface |
|
Use Scenario: Level-translating and buffering I²S clock or control signals between 1.8-V audio codecs and 3.3-V host processors in MP3 players or wireless headsets. IC Role / Device Role / Timing Role: Single-line voltage translator and timing repeater; OE synchronized to codec power-on sequence to prevent glitches. Use Value: Sub-2 ns propagation delay avoids skew in audio sample timing; 10 µA ICC minimizes standby current drain. |
Use Scenario: Controlling power-enable signals to SSD PMICs or NAND flash power rails using 1.8-V SoC GPIOs with 3.3-V-compatible logic thresholds. IC Role / Device Role / Timing Role: Logic-level shifter and gating element for sequencing signals; OE tied to system reset to hold downstream rails inactive until boot completes. Use Value: 3.6-V input tolerance accepts 3.3-V reset assertion; Ioff blocks reverse current if SSD rail powers up before SoC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AUC1G125YEPR | Inverting buffer (Y = NOT A); identical electrical specs, package, and Ioff behavior | Requires logic inversion in signal path; unsuitable where polarity must be preserved | Select only when system design accommodates inverted control or data polarity |
| SN74LVC1G126DBVR | Wider VCC range (1.65–5.5 V); higher ICC (max 10 µA vs. 10 µA same); slower tpd (2.5 ns @ 3.3 V) | Better suited for 3.3-V/5-V mixed systems; lacks sub-1-V operation and 3.6-V input tolerance margin | Choose when legacy 3.3-V compatibility outweighs 1.8-V speed and ultra-low-VCC flexibility |
Compared with SN74AUC1G126YEPR, SN74AUC1G125YEPR provides identical performance with inverted logic, while SN74LVC1G126DBVR trades 1.8-V optimization and input tolerance for broader voltage coverage-making SN74AUC1G126YEPR the preferred choice for modern low-voltage portable designs requiring precise timing and robust level translation.
Availability
SN74AUC1G126YEPR is available at Aetrix Electronics and suitable for portable audio interfaces, SSD power sequencing, and LED indicator circuits requiring stable component supply across consumer and industrial production cycles.
Supply support for SN74AUC1G126YEPR 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 connectivity technologies, with decades of leadership in logic IC innovation and high-volume manufacturing reliability.
SN74AUC1G126YEPR belongs to TI's AUC ultra-low-voltage logic family, engineered for sub-2-V operation in space-constrained portable electronics-prioritizing speed, power efficiency, and I/O flexibility in battery-powered applications.
FAQ
What is the recommended operating voltage range for SN74AUC1G126YEPR?
The SN74AUC1G126YEPR is specified for 0.8 V to 2.7 V supply operation, but is optimized for 1.65 V to 1.95 V. At 1.8 V, it achieves best-in-class 1.6 ns typical propagation delay and ±8 mA output drive. Operation below 0.8 V is not guaranteed, and exceeding 2.7 V violates absolute maximum ratings.
Does SN74AUC1G126YEPR support level shifting between different voltage domains?
Yes. SN74AUC1G126YEPR accepts input voltages up to 3.6 V regardless of VCC, enabling reliable level shifting from 3.3-V or 2.5-V sources into 1.8-V logic domains. Its output remains compatible with the VCC rail, making it ideal for mixed-signal interconnects without external translators.
How does the Ioff feature function in SN74AUC1G126YEPR?
In SN74AUC1G126YEPR, the Ioff circuitry disables all I/O pins when VCC = 0 V, limiting leakage to ±10 µA. This prevents current backflow from powered downstream circuits into the unpowered device-critical for safe partial power-down in multi-rail systems like SSDs or tablets with independent domain supplies.
What package type is used for SN74AUC1G126YEPR, and why is it significant?
SN74AUC1G126YEPR uses TI's NanoFree™ DSBGA-5 package (1.388 mm × 0.888 mm). This die-as-package construction eliminates traditional leadframe and molding, reducing size by >50% versus SOT-23 or SC70, lowering thermal resistance (132°C/W), and improving high-frequency signal integrity in dense portable PCB layouts.
Can SN74AUC1G126YEPR drive an LED directly?
Yes. SN74AUC1G126YEPR delivers ±8 mA at 1.65 V and ±9 mA at 2.3 V, sufficient to drive standard indicator LEDs (e.g., 2–20 mA typical) without external transistors. When used in sourcing mode (anode to VCC, cathode to Y), OE controls LED on/off; in sinking mode (anode to VCC, cathode to Y), A and OE jointly define state.
What is the purpose of the OE pin, and how should it be handled during power-up?
The OE pin on SN74AUC1G126YEPR enables tri-state control: OE = H activates the buffer (Y = A), OE = L places Y in high-impedance. To guarantee safe high-Z state at power-up/power-down, OE must be pulled to GND via a pulldown resistor-minimum value determined by the driving source's sink capability per TI application guidance.
SN74AUC1G126YEPR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AUC
- Package/Case:
- 5-XFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 9mA, 9mA
- Voltage - Supply:
- 0.8V ~ 2.7V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-DSBGA (1.4x0.9)
SN74AUC1G126YEPR FAQ
1.How can I place an order for SN74AUC1G126YEPR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AUC1G126YEPR 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 SN74AUC1G126YEPR reliable?
The price and inventory of SN74AUC1G126YEPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AUC1G126YEPR is usually 5 days.
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4.How is shipping managed for SN74AUC1G126YEPR?
SN74AUC1G126YEPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AUC1G126YEPR 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 SN74AUC1G126YEPR?
For technical support, including SN74AUC1G126YEPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AUC1G126YEPR requirements.
6.How does Aetrix verify that SN74AUC1G126YEPR is sourced from the original manufacturer or authorized distributors?
All SN74AUC1G126YEPR 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 SN74AUC1G126YEPR meets industry standards.
7.What is the process for return or replacement of SN74AUC1G126YEPR?
All SN74AUC1G126YEPR units undergo pre-shipment inspection (PSI). If there is an issue with SN74AUC1G126YEPR, 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 SN74AUC1G126YEPR part is unused and in its original packaging.
Return procedure for SN74AUC1G126YEPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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