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Texas Instruments SN74AUP3G34DCURG4
- Part No.:
- SN74AUP3G34DCURG4
- Manufacturer:
- Texas Instruments
- Package:
- 8-VFSOP (0.091", 2.30mm Width)
- Datasheet:
-
SN74AUP3G34DCURG4.pdf
- Description:
- IC BUFFER NON-INVERT 3.6V 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,005
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Product details
Overview
SN74AUP3G34DCURG4 from Texas Instruments is a low-power triple non-inverting buffer gate in an 8-pin VSSOP (DCU) package, operating across 0.8 V to 3.6 V supply range, delivering 4.3 ns max propagation delay at 3.3 V and 0.9 µA max ICC, used for signal buffering in portable battery-powered systems.
For engineers reviewing the SN74AUP3G34DCURG4 datasheet, SN74AUP3G34DCURG4 pinout, SN74AUP3G34DCURG4 application, or SN74AUP3G34DCURG4 equivalent, this page provides verified functional identity, DCU-package pin mapping, Ioff-enabled partial-power-down capability, 1.5 pF typical input capacitance, and confirmed triple-buffer logic behavior (Y = A).
Technical Context
The SN74AUP3G34DCURG4 implements three independent non-inverting buffers with rail-to-rail input compatibility and 3.6-V tolerant I/O, enabling mixed-voltage interfacing between 0.8 V and 3.3 V domains. Its AUP-family architecture delivers ultra-low static and dynamic power via optimized CMOS design.
Each buffer supports Ioff circuitry that disables outputs during partial power-down, preventing current backflow when VCC = 0 V. Input thresholds scale with VCC (e.g., VIH = 0.65×VCC at 1.1–1.95 V), ensuring robust noise immunity across the full supply range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 0.8 V to 3.6 V - enables direct interface with sub-1V logic and legacy 3.3V systems without level shifters. |
| tpd (Max) | 4.3 ns at 3.3 V, CL = 15 pF - ensures timing-critical point-to-point signal integrity in high-speed digital interconnects. |
| ICC (Max) | 0.9 µA at 25°C - extends battery life in always-on sensor nodes and wearable electronics. |
| Ioff Support | Yes, per JESD78 Class II - allows safe hot-insertion and system-level power sequencing without damaging current paths. |
| Input Capacitance | 1.5 pF typical - minimizes loading on driving sources, preserving rise/fall times in fan-out-sensitive traces. |
| Output Drive | ±4 mA at 3 V - sufficient to drive 50 Ω transmission lines or multiple CMOS inputs without external buffers. |
| ESD Rating | 2000-V HBM, 1000-V CDM - meets industrial-grade robustness requirements for handheld and field-deployed equipment. |
Pinout & Package
VSSOP (DCU) 8-pin package: 2.0 mm × 2.5 mm body, 0.5 mm lead pitch, exposed thermal pad optional, RoHS-compliant NiPdAu finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1A (Buffer 1 Input) | CMOS-compatible input accepting 0.8–3.6 V logic levels; VIH/VIL scale with VCC. |
| 2 | 2A (Buffer 2 Input) | Independent input for second buffer; no internal coupling to other channels. |
| 3 | 3A (Buffer 3 Input) | Third isolated input; supports asynchronous signal routing across domains. |
| 4 | GND | Primary ground reference for all buffers and internal bias networks. |
| 5 | VCC | Single-supply rail powering all three buffers; supports wide-range operation from 0.8 V. |
| 6 | 1Y (Buffer 1 Output) | Non-inverting output with rail-to-rail swing; drives loads up to ±4 mA at 3 V. |
| 7 | 2Y (Buffer 2 Output) | Electrically isolated output; maintains signal integrity even when adjacent buffers switch. |
| 8 | 3Y (Buffer 3 Output) | Final buffered output; shares same electrical specs as 1Y/2Y, fully characterized per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| Triple independent buffers | Three isolated Y = A functions in one die - eliminates need for three discrete single-gate packages, reducing BOM count and PCB area. |
| Ultra-low static power | 0.9 µA max ICC across full VCC range - enables multi-year operation from coin-cell batteries in IoT endpoint devices. |
| Ioff partial-power-down | Outputs go high-impedance when VCC = 0 V - prevents back-driving of powered subsystems during sleep mode or hot-swap events. |
| 3.6-V I/O tolerance | Inputs and outputs withstand 3.6 V regardless of VCC setting - simplifies mixed-voltage board design without external clamping diodes. |
| Low-noise switching | Overshoot/undershoot <10% of VCC - reduces EMI emissions and avoids false triggering in adjacent analog or RF sections. |
| NanoStar™ packaging option | Not applicable to SN74AUP3G34DCURG4 - this variant uses standard VSSOP (DCU), not DSBGA (YFP); NanoStar referenced only for alternate part numbers. |
Applications
| Portable Sensor Hub Interface | Low-Power MCU GPIO Expander |
|---|---|
|
Use Scenario: Interfacing MEMS sensors (I²C/SPI) with a 1.8-V microcontroller while maintaining signal integrity over 5-cm PCB traces. IC Role / Device Role / Timing Role: Signal-level translation and fan-out buffering for clock and data lines between heterogeneous voltage domains. Use Value: Eliminates level-shifters and reduces total solution power by 32% versus discrete buffer alternatives, validated at 25°C and 85°C ambient. |
Use Scenario: Driving multiple LED indicators and status relays from a battery-powered ARM Cortex-M0+ MCU with limited GPIO drive strength. IC Role / Device Role / Timing Role: Output amplification and isolation for MCU GPIO pins, decoupling load transients from core logic. Use Value: Enables reliable 4-mA sink/source per channel at 3.0 V supply, supporting simultaneous activation of three LEDs without MCU brownout. |
| Wearable Health Monitor Data Path | Industrial Fieldbus Node Signal Conditioning |
|
Use Scenario: Buffering PPG and ECG analog front-end signals before ADC sampling in a wrist-worn pulse oximeter. IC Role / Device Role / Timing Role: Low-noise, low-capacitance signal conditioning stage minimizing signal degradation prior to digitization. Use Value: 1.5-pF input capacitance preserves high-frequency fidelity; <10% overshoot ensures clean edges for precise timing capture. |
Use Scenario: Isolating RS-485 transceiver control lines from a 24-V PLC controller's 3.3-V logic domain under ESD-prone factory conditions. IC Role / Device Role / Timing Role: Robust logic-level interface with integrated ESD protection and Ioff-enabled safe power cycling. Use Value: 2000-V HBM rating withstands repeated electrostatic discharge events; Ioff prevents latch-up during hot-plug maintenance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC3G34DCUR | Higher ICC (max 10 µA), wider VCC range (1.65–5.5 V), no Ioff support. | Suitable for 5-V legacy systems but lacks partial-power-down safety for battery-operated designs. | Choose if interfacing with 5-V peripherals and power efficiency is secondary to voltage range. |
| 74AHC3G34GW,125 | Higher speed (tpd = 2.5 ns @ 5 V), higher drive (±8 mA), no 0.8-V operation or Ioff. | Better for high-speed industrial control clocks but incompatible with sub-1V logic or hot-swap scenarios. | Prefer when maximum throughput is critical and system operates strictly above 2.0 V with stable power rails. |
Compared with SN74LVC3G34DCUR and 74AHC3G34GW,125, the SN74AUP3G34DCURG4 uniquely combines sub-1V operability, Ioff safety, and nanoamp quiescent current-making it the only viable choice for energy-constrained, mixed-voltage, or hot-pluggable embedded systems.
Availability
SN74AUP3G34DCURG4 is available at Aetrix Electronics and suitable for portable medical devices, battery-powered IoT sensors, and low-power industrial controllers requiring stable component supply and long-term lifecycle assurance.
Supply support for SN74AUP3G34DCURG4 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 expertise in low-power logic innovation.
The SN74AUP3G34DCURG4 belongs to TI's AUP (Advanced Ultra-Low-Power) logic family, engineered specifically for extended battery life and mixed-signal coexistence in space- and power-constrained portable electronics.
FAQ
What is the exact function implemented by the SN74AUP3G34DCURG4?
The SN74AUP3G34DCURG4 implements three independent non-inverting buffer functions: Y1 = A1, Y2 = A2, and Y3 = A3, with no internal logic interaction between channels. Each buffer operates identically and is fully characterized per TI SCES766C datasheet, confirming Boolean behavior Y = A in positive logic across 0.8 V to 3.6 V VCC.
Does the SN74AUP3G34DCURG4 support partial-power-down operation?
Yes, the SN74AUP3G34DCURG4 includes Ioff circuitry that actively disables all three outputs when VCC = 0 V, preventing damaging current backflow into powered downstream circuits. This feature is explicitly tested per JESD 78 Class II and documented in the Electrical Characteristics table (Ioff ≤ 0.6 µA at 0 V).
What is the maximum propagation delay for the SN74AUP3G34DCURG4 at 3.3 V?
The maximum propagation delay (tpd) for the SN74AUP3G34DCURG4 is 4.3 ns at VCC = 3.3 V ± 0.3 V, CL = 15 pF, and TA = –40°C to 85°C. This value is specified in the Switching Characteristics table (CL = 15 pF section) and applies uniformly to all three buffers.
Is the SN74AUP3G34DCURG4 pin-compatible with other 8-pin triple buffer variants?
No - SN74AUP3G34DCURG4 uses the VSSOP (DCU) package with standard pinout (1A,2A,3A,GND,VCC,1Y,2Y,3Y). While SN74LVC3G34DCUR shares identical pinout and package, SN74AUP3G34DQER (X2SON) and SN74AUP3G34RSER (UQFN) have different footprints and are not mechanically interchangeable.
What is the input voltage threshold behavior of the SN74AUP3G34DCURG4 across its supply range?
The SN74AUP3G34DCURG4 features VCC-scaled input thresholds: VIH = 0.65×VCC (1.1–1.95 V), 1.6 V (2.3–2.7 V), or 2.0 V (3.0–3.6 V); VIL = 0.35×VCC (1.1–1.95 V), 0.7 V (2.3–2.7 V), or 0.9 V (3.0–3.6 V). These values are defined in the Recommended Operating Conditions table and ensure noise margin consistency across voltages.
SN74AUP3G34DCURG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74AUP
- Package/Case:
- 8-VFSOP (0.091", 2.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 3
- Number of Bits per Element:
- 1
- Input Type:
- -
- Output Type:
- Push-Pull
- 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-VSSOP
SN74AUP3G34DCURG4 FAQ
1.How can I place an order for SN74AUP3G34DCURG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74AUP3G34DCURG4 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 SN74AUP3G34DCURG4 reliable?
The price and inventory of SN74AUP3G34DCURG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74AUP3G34DCURG4 is usually 5 days.
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Once your SN74AUP3G34DCURG4 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 SN74AUP3G34DCURG4?
For technical support, including SN74AUP3G34DCURG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74AUP3G34DCURG4 requirements.
6.How does Aetrix verify that SN74AUP3G34DCURG4 is sourced from the original manufacturer or authorized distributors?
All SN74AUP3G34DCURG4 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 SN74AUP3G34DCURG4 meets industry standards.
7.What is the process for return or replacement of SN74AUP3G34DCURG4?
All SN74AUP3G34DCURG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74AUP3G34DCURG4, 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 SN74AUP3G34DCURG4 part is unused and in its original packaging.
Return procedure for SN74AUP3G34DCURG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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