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Diodes Incorporated 74AUP1T34SE-7
- Part No.:
- 74AUP1T34SE-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
74AUP1T34SE-7.pdf
- Description:
- LOGIC AUP 1G TRANSLATOR SOT353 T
- Quantity:
- Payment:
- Shipping:
Inventory:2,680
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Product details
Overview
74AUP1T34SE-7 from Diodes Incorporated is a single-bit, dual-supply, noninverting voltage-level translator IC with 3-state output and IOFF functionality. It enables unidirectional logic signal translation from A to Y across independent VCCA (0.9V–3.6V) and VCCB (0.9V–3.6V) domains, supports partial power-down isolation, and operates from −40°C to +125°C in SOT353 package.
For engineers reviewing the 74AUP1T34SE-7 datasheet, 74AUP1T34SE-7 pinout, 74AUP1T34SE-7 application, or 74AUP1T34SE-7 equivalent, key selection criteria include dual-rail supply flexibility, IOFF-controlled high-impedance state during VCCA = 0V, ±6mA drive at 3V, 5μA max ICC, and ESD robustness (5kV HBM/1kV CDM).
Technical Context
The device implements a dual-voltage rail architecture where input switching thresholds track VCCA and output VOH tracks VCCB, enabling universal low-voltage translation between any pair of supplies from 0.9V to 3.6V. Its IOFF feature activates when VCCB = 0V, disabling input circuits and eliminating input current even with floating or overvoltage inputs up to 3.6V.
Three-state output is asserted when VCCA = 0V, providing electrical isolation up to 3.6V on Y. Propagation delay ranges from 4.2ns (3V/3V, CL=5pF) to 43.87ns (1.2V/0.9V, CL=15pF), with input hysteresis of 100mV typical for noise immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCCA Range | 0.9V to 3.6V - sets input threshold reference; enables compatibility with 1.2V, 1.8V, 2.5V, and 3.3V logic families |
| VCCB Range | 0.9V to 3.6V - defines output HIGH voltage level; allows Y to interface directly with downstream 1.2V–3.3V receivers |
| IOFF Activation | VCCB = 0V - disables input circuitry, blocks input current regardless of A-pin voltage (0V–3.6V), prevents backflow |
| Output Drive | ±6mA at 3V - sufficient to drive standard CMOS loads and moderate capacitive bus lines without external buffering |
| ICC Max | 5μA - ultra-low static power enables use in always-on, battery-sensitive subsystems such as PMIC control paths |
| ESD Rating | 5kV HBM, 1kV CDM - exceeds JEDEC JESD22 requirements, supports handling in non-ESD-controlled assembly environments |
| Operating Temp | −40°C to +125°C - qualified for under-hood automotive, industrial motor control, and telecom infrastructure applications |
Pinout & Package
SOT353 (5-pin, 2.15mm × 2.10mm × 1.00mm) surface-mount package with gull-wing leads, moisture sensitivity level 1, tin-plated terminations per MIL-STD-202.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCCA | Input domain supply | Reference for A-pin input thresholds; must be stable before applying signal to A |
| A | Unidirectional data input | Logic input referenced to VCCA; accepts 0.9V–3.6V signals; disabled if VCCB = 0V |
| GND | Common ground reference | Shared return path for both supply domains; requires low-inductance layout to minimize noise coupling |
| Y | Translated output | Noninverting output referenced to VCCB; enters high-Z when VCCA = 0V (IOFF inactive) |
| VCCB | Output domain supply | Determines VOH level; IOFF activation occurs only when VCCB = 0V, not VCCA |
Key Features
| Feature | Design Value |
|---|---|
| Dual-rail voltage translation | Enables interoperability between mixed-voltage SoC subsystems (e.g., 1.2V core ↔ 3.3V I/O) without external level-shifting components |
| IOFF with VCCB control | Eliminates input leakage and backfeed when VCCB is off, critical for hot-swap and power-gating architectures |
| Input isolation at VCCA = GND | Guarantees zero input current at A-pin even with 3.6V applied, supporting safe power-down sequencing |
| 100mV input hysteresis | Rejects high-frequency noise on slow-rising/falling signals in noisy industrial or automotive environments |
| 3.6V absolute max output tolerance | Allows Y to tolerate up to 3.6V when tri-stated, enabling safe connection to higher-voltage buses during power transitions |
Applications
| Mobile Baseband Interface | Automotive ADAS Sensor Hub |
|---|---|
Use Scenario: Translating GPIO control signals between a 1.2V application processor and 3.3V camera module interface. IC Role / Device Role / Timing Role: Unidirectional level shifter ensuring correct logic interpretation across voltage domains with no timing penalty (typ. 4.4ns delay at 3V/3V). Use Value: Eliminates need for discrete MOSFET translators, reduces BOM count and PCB area in space-constrained smartphone modules. | Use Scenario: Isolating diagnostic enable lines between a 2.5V radar MCU and 5V CAN transceiver power domain during sleep mode. IC Role / Device Role / Timing Role: IOFF-enabled translator that disables input path when VCCB = 0V, preventing current injection into powered-down MCU pins. Use Value: Enables compliant ISO 11898-2 partial networking while maintaining <1μA standby current per channel. |
| Industrial PLC I/O Expansion | Server BMC Voltage Translation |
Use Scenario: Level-shifting status flags from 1.8V FPGA I/O banks to 3.3V isolated digital input buffers. IC Role / Device Role / Timing Role: Dual-supply buffer with 100mV hysteresis, rejecting EMI-induced glitches on long traces in factory-floor environments. Use Value: Improves system reliability by reducing false-trigger events without requiring external RC filtering or Schmitt triggers. | Use Scenario: Bridging SMBus alert signals between a 1.0V server CPU VRM controller and 3.3V baseboard management controller (BMC). IC Role / Device Role / Timing Role: Low-power translator operating at 1.0V/3.3V with 5μA ICC, minimizing impact on VRM efficiency and BMC quiescent load. Use Value: Maintains full SMBus timing compliance (tLOW ≥ 1.3μs) while adding <5ns propagation delay, preserving system fault-response latency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-supply translating buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74AVC1T45DBVR | Bidirectional (A↔B), no IOFF; requires direction control pin; 3.6V max VCC, not 4.0V | Lacks automatic VCCB-based input disable; requires external logic to manage direction and power sequencing | Select only when bidirectional flow is required and direction control is available; avoid for partial-power-down isolation |
| FXMA108MRMT | 8-bit, fixed 1.2V/1.8V/2.5V/3.3V rails; no programmable VCCA/VCCB; higher ICC (20μA) | Designed for parallel bus translation; not suitable for single-signal point-to-point isolation | Use only for multi-bit data/address translation; not a drop-in replacement for single-channel, flexible-rail needs |
Compared with SN74AVC1T45DBVR and FXMA108MRMT, the 74AUP1T34SE-7 uniquely combines unidirectional simplicity, VCCB-triggered IOFF, and fully scalable 0.9V–3.6V rails-making it optimal for single-signal power-domain bridging where sequencing autonomy and ultra-low ICC are critical.
Availability
74AUP1T34SE-7 is available at Aetrix Electronics and suitable for mobile device interconnects, automotive sensor interfaces, and industrial PLC I/O expansion requiring stable component supply across extended temperature and mixed-voltage conditions.
Supply support for 74AUP1T34SE-7 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability, low-power solutions for industrial, automotive, and consumer markets.
The 74AUP1T34SE-7 belongs to the Advanced Ultra-Low-Power (AUP) logic family, designed specifically for energy-efficient voltage translation in battery-powered and thermally constrained systems.
FAQ
What happens to the output Y when VCCA = 0V but VCCB remains powered?
When VCCA = 0V, the output Y enters a high-impedance (three-state) condition regardless of the logic state at A or the value of VCCB. This provides electrical isolation up to 3.6V on the Y pin, preventing backdrive into downstream circuits and enabling safe power-down of the A-side domain while keeping VCCB active.
Can the 74AUP1T34SE-7 translate from a higher voltage to a lower voltage, e.g., 3.3V A to 1.8V Y?
Yes. The device supports translation from any VCCA (0.9V–3.6V) to any VCCB (0.9V–3.6V), including step-down (3.3V→1.8V) and step-up (1.2V→2.5V). Input thresholds scale with VCCA, and VOH tracks VCCB-ensuring correct logic levels on both sides without external resistors or clamps.
Is the NC pin on the SOT353 package required to be tied to a specific voltage?
No. Pin 5 (NC) in the SOT353 package has no internal connection and may be left floating, grounded, or tied to any potential-including VCCA or VCCB-without affecting operation. It is provided for mechanical symmetry and thermal relief; no electrical function is assigned.
How does the 100mV input hysteresis improve system robustness?
The 100mV typical hysteresis raises the VIH threshold above the VIL threshold, creating a noise margin that rejects transient spikes and slow-edge ringing. This prevents metastability and false toggling on noisy PCB traces or in electrically harsh environments like automotive engine bays or industrial motor drives.
74AUP1T34SE-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74AUP
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- 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:
- 6mA, 6mA
- Voltage - Supply:
- 0.9V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-353
74AUP1T34SE-7 FAQ
1.How can I place an order for 74AUP1T34SE-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AUP1T34SE-7 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 74AUP1T34SE-7 reliable?
The price and inventory of 74AUP1T34SE-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AUP1T34SE-7 is usually 5 days.
3.What payment methods are accepted for 74AUP1T34SE-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AUP1T34SE-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AUP1T34SE-7?
74AUP1T34SE-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AUP1T34SE-7 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 74AUP1T34SE-7?
For technical support, including 74AUP1T34SE-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AUP1T34SE-7 requirements.
6.How does Aetrix verify that 74AUP1T34SE-7 is sourced from the original manufacturer or authorized distributors?
All 74AUP1T34SE-7 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 74AUP1T34SE-7 meets industry standards.
7.What is the process for return or replacement of 74AUP1T34SE-7?
All 74AUP1T34SE-7 units undergo pre-shipment inspection (PSI). If there is an issue with 74AUP1T34SE-7, 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 74AUP1T34SE-7 part is unused and in its original packaging.
Return procedure for 74AUP1T34SE-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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