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Texas Instruments SN74AUC1G126YZTR
- Part No.:
- SN74AUC1G126YZTR
- Manufacturer:
- Texas Instruments
- Package:
- 5-XFBGA, DSBGA
- Datasheet:
-
SN74AUC1G126YZTR.pdf
- Description:
- IC BUFFER NON-INVERT 2.7V 5DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,920
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Product details
Overview
SN74AUC1G126YZTR 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 SN74AUC1G126YZTR datasheet, SN74AUC1G126YZTR pinout, SN74AUC1G126YZTR application, or SN74AUC1G126YZTR equivalent, key selection criteria include its 1.8-V optimized timing, DSBGA-5 NanoFree™ package footprint, Ioff-enabled back-drive protection, and guaranteed 3.6-V input tolerance across full temperature range (–40°C to +85°C).
Technical Context
The SN74AUC1G126YZTR implements a non-inverting buffer function (Y = A) with active-high output enable (OE). Its balanced CMOS push-pull output stage enables symmetrical sourcing/sinking capability up to ±8 mA at 1.8 V, while standard CMOS inputs support overvoltage tolerance to 3.6 V independent of VCC.
It features integrated negative clamping diodes on all I/O pins and uses TI's NanoFree™ packaging-where the silicon die serves as the package-with a 1.388 mm × 0.888 mm DSBGA footprint. The Ioff circuitry ensures outputs enter high-impedance state when VCC = 0 V, preventing current backflow during partial power-down sequences.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 0.8 V to 2.7 V; fully functional down to sub-1-V operation, but optimized for 1.65–1.95 V supply rails. |
| tpd (A→Y) | 1.6 ns typical at 1.8 V, CL = 15 pF; enables high-speed signal buffering in compact portable systems. |
| Ioff Leakage | ±10 µA max at VCC = 0 V; prevents damaging back-current flow when device is unpowered. |
| IOH/IOL Drive | ±8 mA at 1.65 V, ±9 mA at 2.3 V; sufficient to directly drive LEDs or interface with 1.8-V logic without external level shifters. |
| Input Tolerance | 3.6-V absolute max input voltage; allows interfacing with higher-voltage controllers (e.g., 3.3-V MCU GPIO) into 1.8-V domains. |
| ESD Rating | ±2000-V HBM, ±1000-V CDM; meets industrial-grade robustness requirements for handheld and consumer electronics. |
| ICC Supply Current | 10 µA max; ultra-low static power ideal for battery-powered devices with extended standby time. |
Pinout & Package
SN74AUC1G126YZTR uses a 5-pin DSBGA (YZP) package measuring 1.388 mm × 0.888 mm with bottom-side ball layout. This NanoFree™ package eliminates traditional leadframe and mold compound, reducing parasitic inductance and enabling ultra-compact PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A | Logic Input | Non-inverting data input; accepts 0.8–3.6 V signals; high-impedance CMOS node requiring proper termination if floating. |
| OE | Output Enable (Active-High) | Drives output Y to high-impedance state when low; must be pulled to GND via resistor during power-up/down to ensure safe tri-state behavior. |
| Y | Tri-State Output | Buffered, non-inverted replica of A when OE = high; presents high-Z state when OE = low; capable of ±8 mA drive at 1.8 V. |
| VCC | Positive Supply | Primary power rail (0.8–2.7 V); requires local 0.1-µF bypass capacitor placed adjacent to pin for noise suppression. |
| GND | Ground Reference | Return path for all internal currents; must be connected with low-inductance routing to minimize ground bounce in high-speed switching. |
Key Features
| Feature | Design Value |
|---|---|
| NanoFree™ DSBGA Packaging | 1.388 mm × 0.888 mm footprint with no leads or mold compound-reduces board space by >50% vs. SC70 and improves thermal performance (RθJA = 132°C/W). |
| Ioff Partial Power-Down Support | Enables safe insertion/removal in live backplanes and hot-swap applications by disabling outputs and blocking reverse current when VCC = 0 V. |
| 3.6-V I/O Tolerance | Allows direct connection to 3.3-V or 2.5-V drivers without external level-shifting components-simplifies mixed-voltage system design. |
| Sub-1-V Operability | Functional at 0.8 V supply-supports emerging ultra-low-power microcontrollers and energy-harvesting subsystems. |
| Fast 1.6-ns Propagation Delay | Meets timing budgets for high-speed interconnects in SSDs, tablets, and embedded PCs operating at >100-MHz effective data rates. |
Applications
| LED Indicator Interface | Low-Voltage Logic Translation |
|---|---|
|
Use Scenario: Driving RGB status LEDs from a 1.8-V microcontroller GPIO in a wireless headset or portable audio dock. IC Role / Device Role / Timing Role: Acts as a buffered, tri-stateable driver that isolates MCU pins from LED load transients and enables shared bus control. Use Value: Eliminates need for discrete FETs or resistors; ±8 mA drive at 1.8 V directly lights standard 20-mA LEDs at reduced brightness with precise current control. |
Use Scenario: Translating signals between a 3.3-V sensor hub and a 1.8-V application processor in an enterprise tablet. IC Role / Device Role / Timing Role: Functions as a unidirectional level translator with active-high enable, supporting dynamic domain isolation during sleep modes. Use Value: 3.6-V input tolerance and Ioff allow safe bidirectional voltage bridging without external bias networks or direction control logic. |
| Solid-State Drive (SSD) Control Bus | Embedded PC Power Sequencing |
|
Use Scenario: Buffering reset or configuration signals on client SSD modules where space and power efficiency are critical. IC Role / Device Role / Timing Role: Provides clean, fast-propagating enable signals to PMICs or flash controllers with minimal added latency. Use Value: 1.6 ns tpd and <10 µA ICC reduce timing uncertainty and extend battery life in ultrabook and 2-in-1 platforms. |
Use Scenario: Managing power-good sequencing for multi-rail supplies in fanless embedded PCs used in digital signage or kiosks. IC Role / Device Role / Timing Role: Serves as a controlled gate for enabling downstream regulators only after primary rail stabilization. Use Value: OE-controlled tri-state output prevents contention during power-up; Ioff blocks leakage when auxiliary rails are off. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AUC1G125YZPR | Inverting buffer (Y = NOT A); identical package, timing, and I/O specs. | Requires logic inversion in signal path; unsuitable where polarity must be preserved. | Select only when system-level inversion is acceptable or required for timing alignment. |
| 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 NanoFree™ size advantage. | Choose for legacy 3.3-V designs where pin compatibility with existing LVC footprints is mandatory. |
Compared with SN74AUC1G126YZTR, SN74AUC1G125YZPR offers identical performance in an inverting configuration, while SN74LVC1G126DBVR trades ultra-low-voltage capability and package miniaturization for broader voltage flexibility and established LVC ecosystem support.
Availability
SN74AUC1G126YZTR is available at Aetrix Electronics and suitable for portable audio docks, solid-state drives, and embedded PCs requiring stable component supply, ultra-small footprint, and guaranteed long-term manufacturability.
Supply support for SN74AUC1G126YZTR 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 experience in high-reliability logic and interface solutions.
The SN74AUC1G126YZTR belongs to TI's AUC ultra-low-voltage logic family, engineered for sub-2-V operation in space-constrained, battery-powered consumer and industrial electronics.
FAQ
What is the recommended pull-down resistor value for OE on SN74AUC1G126YZTR?
The OE pin of SN74AUC1G126YZTR should be tied to GND through a pulldown resistor to ensure high-impedance state during power-up/down. TI specifies minimum resistance based on the driver's current-sinking capability-typically 10 kΩ is sufficient for most applications. Lower values (e.g., 4.7 kΩ) improve noise immunity but increase static current; values above 100 kΩ risk incomplete discharge under high-impedance conditions. Always verify with actual board-level noise and rise-time measurements.
Can SN74AUC1G126YZTR operate reliably at 0.8 V supply?
Yes, SN74AUC1G126YZTR is fully specified from 0.8 V to 2.7 V per its Recommended Operating Conditions. At 0.8 V, it maintains functionality with tpd ≤4.5 ns (CL = 15 pF) and ICC ≤10 µA. However, output drive strength drops to ±0.7 mA, making it suitable for low-load signaling-not LED driving or heavy capacitive loads-at this voltage. System validation at 0.8 V is recommended for timing-critical paths.
Does SN74AUC1G126YZTR support hot-swap applications?
Yes, SN74AUC1G126YZTR supports hot-swap use cases via its Ioff feature. When VCC = 0 V, all I/O pins enter high-impedance state with leakage limited to ±10 µA, preventing current backflow from live buses into the unpowered device. This protects both the SN74AUC1G126YZTR and upstream components during insertion/removal in powered-backplane systems like modular SSD carriers or docking stations.
What is the maximum capacitive load SN74AUC1G126YZTR can drive while maintaining 1.6 ns tpd?
The 1.6 ns typical propagation delay for SN74AUC1G126YZTR is measured at CL = 15 pF and VCC = 1.8 V. Driving loads beyond 15 pF increases tpd linearly-e.g., at CL = 30 pF, tpd rises to 2.5 ns (max) under same conditions. For designs requiring <2 ns delay, keep total load (including trace capacitance and probe effects) ≤15 pF. Use series termination or controlled-impedance routing if higher capacitance is unavoidable.
Is SN74AUC1G126YZTR RoHS-compliant and lead-free?
Yes, SN74AUC1G126YZTR is RoHS-compliant and lead-free. Per TI's Packaging Information Addendum, the YZP package uses SnAgCu (SAC) solder balls and carries MSL Level-1 rating (unlimited floor life at ≤30°C/60% RH). It meets JEDEC J-STD-020 moisture sensitivity requirements and is qualified for standard Pb-free reflow profiles up to 260°C peak.
SN74AUC1G126YZTR 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)
SN74AUC1G126YZTR FAQ
1.How can I place an order for SN74AUC1G126YZTR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AUC1G126YZTR 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 SN74AUC1G126YZTR reliable?
The price and inventory of SN74AUC1G126YZTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AUC1G126YZTR is usually 5 days.
3.What payment methods are accepted for SN74AUC1G126YZTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AUC1G126YZTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74AUC1G126YZTR?
SN74AUC1G126YZTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AUC1G126YZTR 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 SN74AUC1G126YZTR?
For technical support, including SN74AUC1G126YZTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AUC1G126YZTR requirements.
6.How does Aetrix verify that SN74AUC1G126YZTR is sourced from the original manufacturer or authorized distributors?
All SN74AUC1G126YZTR 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 SN74AUC1G126YZTR meets industry standards.
7.What is the process for return or replacement of SN74AUC1G126YZTR?
All SN74AUC1G126YZTR units undergo pre-shipment inspection (PSI). If there is an issue with SN74AUC1G126YZTR, 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 SN74AUC1G126YZTR part is unused and in its original packaging.
Return procedure for SN74AUC1G126YZTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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