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Diodes Incorporated 74AUP1T34QSE-7
- Part No.:
- 74AUP1T34QSE-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
74AUP1T34QSE-7.pdf
- Description:
- LOGIC AUP 1G TRANSLATOR SOT353 T
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
74AUP1T34QSE-7 from Diodes Incorporated is an AEC-Q100 qualified, single-bit, dual-supply non-inverting voltage-level translator IC with 3-state output and IOFF functionality. It enables bidirectional voltage domain bridging between 0.9 V and 3.6 V logic systems (e.g., 1.2 V MCU I/O to 3.3 V sensor interface), supports -40°C to +125°C operation, and features ±6 mA output drive at 3 V with 5 μA max ICC.
For engineers reviewing the 74AUP1T34QSE-7 datasheet, 74AUP1T34QSE-7 pinout, 74AUP1T34QSE-7 application, or 74AUP1T34QSE-7 equivalent, this device is selected for automotive ECU signal isolation, low-voltage logic translation in ADAS subsystems, and partial-power-down management where VCCA = 0 V forces Y into high-impedance without backflow current.
Technical Context
This IC implements a unidirectional A→Y translation architecture with independent VCCA and VCCB supplies. Input switching thresholds scale with VCCA (VIH = 0.65×VCCA min at 0.9–1.95 V), while VOH tracks VCCB (VOH ≥ VCCB – 0.2 V). The IOFF feature activates when VCCB = 0 V, disabling input circuitry and eliminating input current even with A biased up to 3.6 V.
Three-state behavior is triggered solely by VCCA = 0 V - not by control pins - enabling automatic power-down isolation. Propagation delay ranges from 4.2 ns (3 V/3 V, CL = 5 pF) to 43.7 ns (0.9 V/0.9 V, CL = 30 pF), with input/output capacitance specified at 4 pF and 7 pF respectively.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCCA Range | 0.9 V to 3.6 V - sets input threshold and enables compatibility with sub-1 V logic families |
| VCCB Range | 0.9 V to 3.6 V - defines output HIGH voltage level and allows flexible sink/source rail selection |
| IOFF Activation | VCCB = 0 V - disables input stage and blocks input current regardless of A voltage (0–3.6 V) |
| 3-State Trigger | VCCA = 0 V - forces Y into high-impedance, preventing backfeed during system power sequencing |
| ESD Robustness | 5 kV HBM / 1 kV CDM - meets automotive-grade reliability requirements for harsh ECU environments |
| Propagation Delay | 4.2 ns min (3 V/3 V, CL = 5 pF) - supports >100 MHz data rates in low-load interfaces |
| Operating Temp | -40°C to +125°C - qualified for under-hood and ADAS module deployment without derating |
Pinout & Package
Supplied in SOT353 (SC-70-5) package: 1.30 mm × 2.10 mm × 0.95 mm body, 0.65 mm pitch, lead-free matte tin terminations, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCCA | Input supply rail | Powers input stage and defines VIH/VIL thresholds; must be stable before A is driven |
| A | Logic input | Single-bit data input referenced to VCCA; accepts 0–3.6 V swing with hysteresis |
| GND | Reference ground | Common return for both VCCA and VCCB supplies; requires low-inductance connection |
| Y | Translated output | Non-inverted output referenced to VCCB; drives loads up to ±6 mA at 3 V |
| VCCB | Output supply rail | Sets VOH level and enables IOFF when grounded; decoupling capacitor required |
Key Features
| Feature | Design Value |
|---|---|
| Dual-rail translation | Independent VCCA/VCCB support enables arbitrary 0.9–3.6 V domain crossing without external biasing |
| Automatic IOFF | VCCB = 0 V disables input stage and eliminates leakage - critical for battery-backed subsystems |
| Power-down isolation | VCCA = 0 V places Y in high-Z, blocking reverse current flow up to 3.6 V across Y–GND |
| Low static power | 5 μA max ICC at full voltage range - reduces quiescent load in always-on vehicle modules |
| Automotive qualification | AEC-Q100 Grade 1, PPAP-capable, manufactured in IATF 16949 facilities - suitable for safety-critical ECUs |
Applications
| Automotive ECU Signal Bridging | ADAS Camera Interface Isolation |
|---|---|
Use Scenario: Interfacing a 1.2 V CAN controller I/O to a 3.3 V power management IC within an engine control unit. IC Role / Device Role / Timing Role: Unidirectional level shifter translating control signals while maintaining timing integrity during cold-crank voltage dips. Use Value: Eliminates need for discrete resistor-divider networks or active translators with external enable, reducing BOM count and board space. | Use Scenario: Isolating MIPI CSI-2 clock or reset lines between a 1.8 V image sensor and 2.8 V ISP in a surround-view camera module. IC Role / Device Role / Timing Role: Voltage translator with automatic 3-state on VCCA loss, preventing bus contention during sensor power cycling. Use Value: Enables clean power sequencing without software-controlled enable pins, improving boot reliability in multi-rail camera systems. |
| Industrial Sensor Hub Translation | Infotainment System GPIO Expansion |
Use Scenario: Connecting multiple 1.0 V IoT sensor outputs to a 3.0 V microcontroller GPIO bank in a telematics gateway. IC Role / Device Role / Timing Role: Single-bit buffer providing rail-to-rail translation with hysteresis for noise immunity in electrically noisy chassis environments. Use Value: Delivers 100 mV typical hysteresis and 5 kV HBM ESD protection - exceeds industrial IEC 61000-4-2 requirements. | Use Scenario: Expanding 1.2 V application processor GPIOs to drive 3.3 V backlight controls or audio codec reset lines in a head-unit design. IC Role / Device Role / Timing Role: Low-power translation buffer enabling direct connection without level-shifting ICs or MOSFET-based solutions. Use Value: Achieves <5 μA quiescent current and 4.2 ns propagation delay - preserves real-time responsiveness in UI-critical paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-level translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TXS0101DCKR | Single-channel auto-direction sensing; no VCCA/VCCB separation - uses single supply with internal charge pump | Requires no separate VCCA rail; unsuitable for strict unidirectional isolation or IOFF when VCCB = 0 V | Select when direction detection is needed and dual-supply isolation is unnecessary |
| NLSX4014DR2G | 4-bit translator with integrated 10 kΩ pull-ups; higher ICC (10 μA typ); no IOFF on VCCB = 0 V | Lacks automatic input disable at VCCB = 0 V; requires external enable for power-down isolation | Select when multi-bit translation is required and IOFF is not mandatory for battery-sensitive nodes |
Compared with TXS0101DCKR and NLSX4014DR2G, the 74AUP1T34QSE-7 uniquely provides independent dual-supply control, guaranteed IOFF at VCCB = 0 V, and automotive-grade temperature/ESD specs - making it optimal for safety-critical, low-leakage, unidirectional translation in ECU and ADAS modules.
Availability
74AUP1T34QSE-7 is available at Aetrix Electronics and suitable for automotive electronic control units, advanced driver assistance systems, and industrial sensor hubs requiring stable component supply across extended temperature and voltage ranges.
Supply support for 74AUP1T34QSE-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 components for automotive, industrial, and computing markets.
The 74AUP logic family targets ultra-low-power, wide-voltage-range translation for automotive and portable applications - designed specifically to replace legacy 74LVC devices in AEC-Q100-compliant systems with tighter supply margins and higher ESD tolerance.
FAQ
Can 74AUP1T34QSE-7 translate signals from VCCB to VCCA?
No. This device is strictly unidirectional: A → Y only. Input A is referenced to VCCA, and output Y is referenced to VCCB. There is no path or internal circuitry supporting reverse translation. Attempting to drive Y as an input may damage the device or violate absolute maximum ratings.
What happens if VCCA and VCCB are powered at different times?
VCCA must be applied before or simultaneously with any signal on A; otherwise, input clamp current may exceed limits. VCCB can be ramped independently - when VCCB = 0 V, the input stage disables completely, allowing A to float safely up to 3.6 V without current draw or damage.
Is the NC pin (Pin 3 in SOT353 marking) required to be connected?
No. Pin 3 is labeled "NC" in the official pinout and is internally unconnected. It may be left floating, tied to GND, or connected to VCCA/VCCB per PCB layout convenience - no electrical impact. Do not confuse it with GND (Pin 3 in functional pin table is GND; physical SOT353 Pin 3 is NC - see top-view marking diagram).
Does 74AUP1T34QSE-7 support hot insertion or live swapping?
Yes - its IOFF feature enables safe hot insertion when VCCB = 0 V (input disabled) or VCCA = 0 V (output in high-Z). However, ensure VCCA and VCCB are sequenced to avoid violating absolute maximum ratings on VI or VO during transition; use slew-rate controlled supplies or series resistors if rapid rail transitions occur.
74AUP1T34QSE-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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-353
74AUP1T34QSE-7 FAQ
1.How can I place an order for 74AUP1T34QSE-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74AUP1T34QSE-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 74AUP1T34QSE-7 reliable?
The price and inventory of 74AUP1T34QSE-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AUP1T34QSE-7 is usually 5 days.
3.What payment methods are accepted for 74AUP1T34QSE-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AUP1T34QSE-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74AUP1T34QSE-7?
74AUP1T34QSE-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74AUP1T34QSE-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 74AUP1T34QSE-7?
For technical support, including 74AUP1T34QSE-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AUP1T34QSE-7 requirements.
6.How does Aetrix verify that 74AUP1T34QSE-7 is sourced from the original manufacturer or authorized distributors?
All 74AUP1T34QSE-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 74AUP1T34QSE-7 meets industry standards.
7.What is the process for return or replacement of 74AUP1T34QSE-7?
All 74AUP1T34QSE-7 units undergo pre-shipment inspection (PSI). If there is an issue with 74AUP1T34QSE-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 74AUP1T34QSE-7 part is unused and in its original packaging.
Return procedure for 74AUP1T34QSE-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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