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Texas Instruments SN74AUC1G126YZPR
- Part No.:
- SN74AUC1G126YZPR
- Manufacturer:
- Texas Instruments
- Package:
- 5-XFBGA, DSBGA
- Datasheet:
-
SN74AUC1G126YZPR.pdf
- Description:
- IC BUFFER NON-INVERT 2.7V 5DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,150
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Product details
Overview
SN74AUC1G126YZPR 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 SSD signal conditioning where low-voltage logic translation and bus isolation are required.
For engineers reviewing the SN74AUC1G126YZPR datasheet, SN74AUC1G126YZPR pinout, SN74AUC1G126YZPR application, or SN74AUC1G126YZPR equivalent, key selection criteria include its 5-pin DSBGA package, sub-1-V operability, 2.5 ns maximum tpd at 1.8 V, Ioff-enabled back-drive protection, and 3.6-V input tolerance for mixed-voltage system interfacing.
Technical Context
The SN74AUC1G126YZPR implements a noninverting buffer with active-high output enable (OE), where Y = A when OE = H, and Y = high-impedance when OE = L. Its balanced CMOS push-pull output stage enables symmetrical sourcing/sinking capability up to ±9 mA at 2.5 V, while standard CMOS inputs support fast edge rates (≤10 ns/V at 1.65–1.95 V).
It integrates negative clamping diodes on all I/O pins, supports 0.8–2.7 V VCC operation, and features Ioff circuitry that disables outputs and limits leakage to ±10 µA when VCC = 0 V-enabling safe hot insertion and partial power-down in multi-rail systems without external isolation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 0.8 V to 2.7 V; supports sub-1-V logic domains and 1.8-V core supply with 3.6-V tolerant inputs |
| Max Propagation Delay | 2.5 ns at 1.8 V, CL = 30 pF; ensures timing-critical signal buffering in high-speed digital interfaces |
| Output Drive | ±8 mA at 1.8 V; sufficient to directly drive LEDs or terminate short PCB traces without external buffers |
| Ioff Leakage | ±10 µA at VCC = 0 V; prevents damaging back-current during power sequencing or hot-swap events |
| Input Tolerance | 3.6 V absolute max input voltage; allows interfacing with 3.3-V or 2.5-V sources into 1.8-V systems |
| ESD Rating | ±2000-V HBM; meets industrial-grade robustness requirements without external protection components |
| ICC Supply Current | 10 µA max; enables ultra-low static power in always-on subsystems like wake-on-event logic |
Pinout & Package
SN74AUC1G126YZPR uses a 5-pin DSBGA (Die Size Ball Grid Array) package measuring 1.388 mm × 0.888 mm, with bottom-side solder balls and no leads-optimized for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A | Logic input | Noninverting data input; accepts 0.8–3.6 V signals and drives internal buffer stage |
| OE | Output enable control | Active-high enable; must be pulled low via resistor during power-up to guarantee high-Z state |
| Y | Tri-state output | Buffered copy of A when OE = H; high-impedance when OE = L-enables bus sharing |
| VCC | Positive supply | Primary power rail (0.8–2.7 V); requires local 0.1-µF bypass capacitor per TI layout guidelines |
| GND | Ground reference | Return path for all I/O and supply currents; must be low-impedance connection to system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| NanoFree™ DSBGA packaging | Dies-as-packages eliminate leadframe and molding compound-reducing size by >50% vs. SC70 and enabling direct die attach in ultra-thin modules |
| Sub-1-V operability | Functional down to 0.8 V VCC-supports emerging ultra-low-power microcontrollers and energy-harvesting systems |
| Ioff partial power-down | Disables outputs and limits I/O leakage to ±10 µA at VCC = 0 V-eliminates need for external isolation switches in multi-supply domains |
| 3.6-V I/O tolerance | Inputs withstand 3.6 V regardless of VCC level-enables level-shifting between 1.8-V logic and 3.3-V peripherals without discrete translators |
| 2.5 ns max tpd at 1.8 V | Meets timing budgets for DDR clock enable paths, sensor interface mux control, and real-time audio routing in portable devices |
Applications
| LED Indicator Control | SSD Command Bus Isolation |
|---|---|
Use Scenario: Driving status LEDs from a 1.8-V MCU GPIO in a wireless headset or tablet. IC Role / Device Role / Timing Role: Noninverting buffer with tri-state output acting as current-amplifying interface between low-drive MCU pin and LED load. Use Value: Delivers ±8 mA at 1.8 V-sufficient to light standard LEDs without external transistor; Ioff prevents backfeed when MCU is powered down. | Use Scenario: Isolating host controller command lines from NAND flash arrays in client SSDs. IC Role / Device Role / Timing Role: Bidirectional bus buffer enabling controlled signal routing between 1.8-V controller and flash I/O with precise enable timing. Use Value: 1.6 ns typical tpd at 1.8 V meets SSD timing margins; 3.6-V input tolerance accommodates flash vendor-specific signaling voltages. |
| Portable Audio DAC Interface | Embedded PC Power Sequencing |
Use Scenario: Level-shifting I²S data lines between 1.8-V codec and 3.3-V audio processor in MP3 players. IC Role / Device Role / Timing Role: Voltage-tolerant unidirectional buffer translating logic levels while preserving signal integrity on high-speed serial audio paths. Use Value: 10 ns/V min input transition rate ensures clean edge detection; low 2.5 pF input capacitance minimizes loading on source driver. | Use Scenario: Controlling power-enable signals to multiple voltage rails in an embedded PC motherboard. IC Role / Device Role / Timing Role: Tri-state buffer managing shared enable lines across independent regulators, preventing contention during staggered power-up. Use Value: High-impedance output state eliminates shoot-through risk; ±20 mA absolute max output current protects regulator EN pins from overdrive. |
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 logic (Y = NOT A); identical package, specs, and Ioff behavior | Required where signal polarity inversion is needed in bus control or enable chains | Select when functional inversion is acceptable or required-no change to layout or power design |
| SN74LVC1G126DBVR | Wider VCC range (1.65–5.5 V); higher ICC (max 10 µA vs. 10 µA), same 5-pin SOT-23 package | Better suited for 3.3-V or 5-V systems; lacks sub-1-V operation and NanoFree footprint | Choose for legacy 3.3-V designs needing pin-compatible upgrade path-but not for space-constrained 1.8-V portable use |
Compared with SN74AUC1G126YZPR, SN74AUC1G125YZPR provides identical performance in inverted logic applications, while SN74LVC1G126DBVR offers broader voltage flexibility at the cost of larger footprint and no sub-1-V capability-making SN74AUC1G126YZPR optimal for miniaturized, ultra-low-voltage portable electronics.
Availability
SN74AUC1G126YZPR is available at Aetrix Electronics and suitable for portable audio interfaces, SSD command routing, embedded PC power sequencing, and LED indicator control requiring stable component supply across high-mix, low-volume production runs.
Supply support for SN74AUC1G126YZPR 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 company delivering analog and embedded processing solutions, with leadership in low-power logic, precision analog, and high-reliability interface ICs.
The SN74AUC1G126YZPR belongs to TI's AUC ultra-low-voltage logic family, engineered specifically for space- and power-constrained portable electronics operating at 1.8 V and below-prioritizing speed, density, and mixed-voltage interoperability.
FAQ
What is the minimum VCC required for reliable operation of the SN74AUC1G126YZPR?
The SN74AUC1G126YZPR is fully specified from 0.8 V to 2.7 V VCC, with recommended operation between 1.65 V and 1.95 V. At 0.8 V, it maintains functionality with 4.5 ns max propagation delay (CL = 15 pF) and 0.7 mA output drive-enabling use in energy-harvesting or battery-depleted scenarios where other logic families fail. The SN74AUC1G126YZPR datasheet confirms this across Electrical Characteristics and Recommended Operating Conditions tables.
How does the Ioff feature protect the SN74AUC1G126YZPR during partial power-down?
The Ioff circuitry in the SN74AUC1G126YZPR disables all outputs and limits I/O leakage to ±10 µA when VCC = 0 V, preventing damaging back-current flow from live signal lines into a powered-down device. This eliminates the need for external isolation switches in multi-rail systems and ensures safe hot-plug operation. The SN74AUC1G126YZPR specification sheet explicitly defines Ioff in Section 6.5 Electrical Characteristics.
Can the SN74AUC1G126YZPR interface a 3.3-V microcontroller with a 1.8-V FPGA?
Yes-the SN74AUC1G126YZPR accepts input voltages up to 3.6 V regardless of VCC level, allowing direct connection from a 3.3-V MCU output to its A or OE pin while VCC is set to 1.8 V. Its output then swings rail-to-rail between 0 V and 1.8 V, compatible with FPGA I/O thresholds. This behavior is documented in the Absolute Maximum Ratings and Recommended Operating Conditions sections of the SN74AUC1G126YZPR datasheet.
What is the thermal resistance (RθJA) of the SN74AUC1G126YZPR in its DSBGA package?
The SN74AUC1G126YZPR in the 5-pin DSBGA (YZP) package has a junction-to-ambient thermal resistance (RθJA) of 132 °C/W, significantly lower than the 206 °C/W of the SOT-23 (DBV) and 252 °C/W of the SC70 (DCK) variants. This improved thermal performance results from the direct die-to-PCB thermal path in NanoFree packaging and is confirmed in Table 6.4 Thermal Information of the SN74AUC1G126YZPR datasheet.
Does the SN74AUC1G126YZPR require external pull-up or pull-down resistors on OE?
Yes-to ensure a defined high-impedance state during power-up or power-down, OE must be tied to GND through a pulldown resistor. TI recommends calculating the minimum value based on the driver's current-sinking capability; typical values range from 10 kΩ to 100 kΩ. This requirement is explicitly stated in the Description section and Device Functional Modes table of the SN74AUC1G126YZPR datasheet.
SN74AUC1G126YZPR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AUC
- Package/Case:
- 5-XFBGA, DSBGA
- 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:
- 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)
SN74AUC1G126YZPR FAQ
1.How can I place an order for SN74AUC1G126YZPR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AUC1G126YZPR 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 SN74AUC1G126YZPR reliable?
The price and inventory of SN74AUC1G126YZPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AUC1G126YZPR is usually 5 days.
3.What payment methods are accepted for SN74AUC1G126YZPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74AUC1G126YZPR transactions.
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4.How is shipping managed for SN74AUC1G126YZPR?
SN74AUC1G126YZPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AUC1G126YZPR 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 SN74AUC1G126YZPR?
For technical support, including SN74AUC1G126YZPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AUC1G126YZPR requirements.
6.How does Aetrix verify that SN74AUC1G126YZPR is sourced from the original manufacturer or authorized distributors?
All SN74AUC1G126YZPR 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 SN74AUC1G126YZPR meets industry standards.
7.What is the process for return or replacement of SN74AUC1G126YZPR?
All SN74AUC1G126YZPR units undergo pre-shipment inspection (PSI). If there is an issue with SN74AUC1G126YZPR, 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 SN74AUC1G126YZPR part is unused and in its original packaging.
Return procedure for SN74AUC1G126YZPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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