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Texas Instruments SN74AUP2G125RSER
- Part No.:
- SN74AUP2G125RSER
- Manufacturer:
- Texas Instruments
- Package:
- 8-UFQFN
- Datasheet:
-
SN74AUP2G125RSER.pdf
- Description:
- IC BUFFER NON-INVERT 3.6V 8UQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,475
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Product details
Overview
SN74AUP2G125RSER from Texas Instruments is a dual 3-state bus buffer gate optimized for ultra-low-power operation across 0.8 V to 3.6 V supply rails. It features two independent noninverting buffers with active-low output-enable (1OE, 2OE), low dynamic power (Cpd = 4 pF typ at 3.3 V), 5.4 ns max propagation delay at 3.3 V, and Ioff support for partial-power-down mode - enabling use in battery-powered portable interfaces and voltage-level translation between mixed-voltage domains.
For engineers reviewing the SN74AUP2G125RSER datasheet, SN74AUP2G125RSER pinout, SN74AUP2G125RSER application, or SN74AUP2G125RSER equivalent, key selection criteria include its 0.8–3.6 V VCC range, 3.6-V tolerant I/Os, input-disable capability for floating inputs, 1.5 pF typical input capacitance, and compatibility with point-to-point signal routing in space-constrained designs.
Technical Context
The SN74AUP2G125RSER implements dual independent noninverting buffer stages, each with a dedicated active-low 3-state output-enable control. Its logic diagram confirms direct A→Y signal path with OE asserting high to force high-impedance output state.
Designed for TI's AUP (Advanced Ultra-Low-Power) family, it uses optimized CMOS process technology to achieve sub-1 µA static ICC (0.9 mA max) and low dynamic switching energy. Input hysteresis improves noise immunity during slow transitions, while Ioff circuitry blocks current backflow when powered down - critical for system-level power sequencing integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 0.8 V to 3.6 V - supports single-supply operation across legacy 1.2 V, 1.8 V, 2.5 V, and 3.3 V logic domains |
| tpd Max | 5.4 ns at 3.3 V, CL = 5 pF - enables timing-critical point-to-point data paths up to ~185 MHz |
| Ioff Support | Yes - prevents damaging back-current during partial power-down, allowing safe hot-insertion in multi-rail systems |
| Input Capacitance | 1.5 pF typ - minimizes loading on driving sources and preserves signal edge integrity |
| IOZ (Off-State Leakage) | 0.1–0.5 mA max - ensures stable high-Z output behavior during disable without external pull resistors |
| ESD Rating | 2000-V HBM, 1000-V CDM - meets industrial-grade robustness requirements without added protection circuitry |
Pinout & Package
SN74AUP2G125RSER is packaged in an 8-pin UQFN (RSE) package measuring 1.55 mm × 1.45 mm × 0.6 mm, with wettable flank side walls and an exposed thermal pad centered on the bottom surface. The pad must be connected only as secondary GND or left electrically open per TI design guidance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1OE | Active-low output-enable for Channel 1 - drives 1Y high-impedance when logic high |
| 2 | 1A | Noninverting input for Channel 1 - directly controls 1Y output state when 1OE is low |
| 3 | GND | Ground reference for all internal circuitry and I/O structures |
| 4 | 2Y | Noninverting output for Channel 2 - reflects 2A when 2OE is low; high-Z otherwise |
| 5 | VCC | Primary power supply rail - powers both channels and defines logic threshold levels |
| 6 | 2OE | Active-low output-enable for Channel 2 - independent control of 2Y high-impedance state |
| 7 | 1Y | Noninverting output for Channel 1 - mirrors 1A when 1OE is low; high-Z otherwise |
| 8 | 2A | Noninverting input for Channel 2 - directly controls 2Y output state when 2OE is low |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low static power | ICC ≤ 0.9 mA max across full VCC range - extends battery life in always-on sensor nodes |
| 3.6-V I/O tolerance | Supports mixed-mode signaling without level shifters when VCC = 1.8 V or 2.5 V |
| Input-disable capability | Allows safe floating of unused inputs without pull-up/down resistors or logic contention |
| Low-noise switching | Overshoot/undershoot <10% of VCC - reduces EMI and eliminates need for external termination |
| Latch-up immunity | Exceeds 100 mA per JESD78 Class II - ensures reliability in noisy industrial environments |
Applications
| USB Type-C Port Multiplexing | IoT Sensor Hub Interface |
|---|---|
Use Scenario: Bidirectional data routing between microcontroller and USB-C controller with dynamic lane assignment. IC Role / Device Role / Timing Role: Dual-channel 3-state buffer isolates upstream/downstream data paths and enables software-controlled signal directionality. Use Value: Enables compact PCB layout with no external level shifters due to 3.6-V I/O tolerance and 1.8-V VCC compatibility. | Use Scenario: Aggregating analog and digital sensor outputs (I²C, GPIO, interrupt lines) into a low-power MCU with shared bus resources. IC Role / Device Role / Timing Role: Bus isolation gate preventing contention during MCU sleep/wake transitions and managing multiple interrupt sources. Use Value: Ioff support eliminates back-current during MCU power-down, preserving sensor bias and reducing system leakage by >90%. |
| Wearable Display Data Lanes | Industrial PLC I/O Expansion |
Use Scenario: Driving parallel RGB interface signals from an application processor to a small-form-factor OLED display panel. IC Role / Device Role / Timing Role: Low-capacitance buffer stage improving signal rise/fall times and reducing crosstalk on dense flex PCB traces. Use Value: 1.5 pF input capacitance and 5.4 ns tpd maintain pixel clock integrity up to 25 MHz with minimal jitter accumulation. | Use Scenario: Isolating field-side digital inputs from controller-side logic in modular I/O modules with independent power domains. IC Role / Device Role / Timing Role: Voltage-level translator and bus driver supporting 24 V field logic interfaced to 3.3 V controller logic via optocoupler outputs. Use Value: Input hysteresis rejects conducted noise on long cables, while 0.8 V minimum VCC allows operation from degraded auxiliary rails. |
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 |
|---|---|---|---|
| SN74LVC2G125RSER | Higher ICC (max 10 µA vs. 0.9 mA), faster tpd (3.8 ns @ 3.3 V), but no Ioff or input-disable feature | Not suitable for partial-power-down systems; requires external pull resistors on floating inputs | Choose when speed > power savings and system power sequencing is fixed |
| SN74AUC2G125RSER | Narrower VCC range (0.8–2.7 V), higher drive strength (±24 mA), no 3.6-V I/O tolerance | Cannot interface with 3.3-V peripherals when operating at 1.8 V; unsuitable for mixed-voltage backplanes | Prefer only for 1.2–2.5 V-only systems requiring stronger drive and lower capacitance |
Compared with SN74LVC2G125RSER and SN74AUC2G125RSER, the SN74AUP2G125RSER uniquely balances ultra-low static power, full 0.8–3.6 V flexibility, Ioff-enabled power sequencing, and 3.6-V I/O tolerance - making it the sole choice for battery-operated, multi-rail, and hot-swap-capable embedded interfaces.
Availability
SN74AUP2G125RSER is available at Aetrix Electronics and suitable for USB-C port controllers, IoT sensor hubs, wearable display interfaces, and industrial I/O expansion modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74AUP2G125RSER 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 over 50 years of innovation in low-power design and industrial-grade reliability.
The SN74AUP2G125RSER belongs to TI's Advanced Ultra-Low-Power (AUP) logic family, engineered specifically for battery-powered portable electronics where extended runtime, wide supply voltage flexibility, and robust mixed-signal interoperability are mandatory.
FAQ
What is the maximum recommended operating temperature for the SN74AUP2G125RSER?
The SN74AUP2G125RSER is fully specified for operation from –40°C to +85°C ambient temperature. All electrical parameters-including propagation delay, output drive, and leakage currents-are guaranteed across this industrial temperature range, and thermal impedance (qJA = 253°C/W for RSE package) ensures reliable performance under sustained load conditions within these limits.
Does the SN74AUP2G125RSER require external pull-up resistors on its OE pins?
No - the SN74AUP2G125RSER does not require external pull-up resistors on 1OE or 2OE pins for normal operation. However, to ensure defined high-impedance state during power-up or power-down, TI recommends tying OE pins to VCC through a pull-up resistor; minimum value depends on driver sink capability and system timing constraints, typically 10 kΩ to 100 kΩ.
Can the SN74AUP2G125RSER safely interface a 1.8-V microcontroller with a 3.3-V peripheral?
Yes - the SN74AUP2G125RSER supports 3.6-V tolerant I/Os while operating from a 1.8-V VCC supply. This allows bidirectional voltage translation without external level shifters: 1.8-V logic inputs are correctly interpreted, and outputs swing rail-to-rail up to 3.3 V when driven into a 3.3-V-tolerant load, satisfying mixed-mode signal integrity requirements.
What is the function of the exposed thermal pad on the SN74AUP2G125RSER RSE package?
The exposed center pad on the SN74AUP2G125RSER RSE package must be connected only as a secondary GND or left electrically open - it is not intended for thermal dissipation in standard operation. TI specifies no thermal derating requirement for this device, and connecting the pad to anything other than GND may compromise ESD performance or cause unintended coupling.
How does the input-disable feature of the SN74AUP2G125RSER improve system design?
The input-disable feature of the SN74AUP2G125RSER allows unused inputs to remain unconnected (floating) without causing excessive ICC or logic instability. This eliminates the need for external pull-up/pull-down resistors on idle channels, reducing BOM count, PCB area, and potential noise coupling - especially valuable in space-constrained wearable and sensor-node designs where every millimeter matters.
SN74AUP2G125RSER Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AUP
- Package/Case:
- 8-UFQFN
- 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:
- 4mA, 4mA
- Voltage - Supply:
- 0.8V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UQFN (1.5x1.5)
SN74AUP2G125RSER FAQ
1.How can I place an order for SN74AUP2G125RSER through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AUP2G125RSER 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 SN74AUP2G125RSER reliable?
The price and inventory of SN74AUP2G125RSER are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AUP2G125RSER is usually 5 days.
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SN74AUP2G125RSER orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74AUP2G125RSER 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 SN74AUP2G125RSER?
For technical support, including SN74AUP2G125RSER datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AUP2G125RSER requirements.
6.How does Aetrix verify that SN74AUP2G125RSER is sourced from the original manufacturer or authorized distributors?
All SN74AUP2G125RSER 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 SN74AUP2G125RSER meets industry standards.
7.What is the process for return or replacement of SN74AUP2G125RSER?
All SN74AUP2G125RSER units undergo pre-shipment inspection (PSI). If there is an issue with SN74AUP2G125RSER, 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 SN74AUP2G125RSER part is unused and in its original packaging.
Return procedure for SN74AUP2G125RSER:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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