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Diodes Incorporated 74LVC1G34QW5-7
- Part No.:
- 74LVC1G34QW5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
74LVC1G34QW5-7.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:19,059
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Product details
Overview
74LVC1G34QW5-7 from Diodes Incorporated is an automotive-grade single non-inverting buffer gate with push-pull output, operating from 1.65V to 5.5V supply, delivering ±24mA drive at 3.3V, featuring 5.0pF input capacitance and IOFF partial-power-down protection. It enables voltage-level shifting in mixed-voltage automotive control modules.
For engineers reviewing the 74LVC1G34QW5-7 datasheet, 74LVC1G34QW5-7 pinout, 74LVC1G34QW5-7 application, or 74LVC1G34QW5-7 equivalent, key selection criteria include Grade 1 temperature range (–40°C to +125°C), 5.5V-tolerant inputs, IOFF-enabled power-down isolation, and SOT25 package compatibility for space-constrained PCB layouts.
Technical Context
This device implements a single positive-logic buffer (A → Y) with CMOS input structure and push-pull output stage. Its IOFF circuit actively disables output leakage during VCC = 0V, preventing back-current flow in partial-power-down systems.
Input voltage tolerance up to 5.5V-regardless of VCC level-enables interoperability across 1.8V, 2.5V, 3.3V, and 5V domains. Propagation delay is 2.0ns typical at 3.3V/25°C, with thermal resistance θJA = 184°C/W in SOT25.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65V to 5.5V - supports direct integration into multi-rail automotive ECUs without level shifters |
| Output Drive Strength | ±24mA at VCC = 3.0V - sufficient to drive multiple LVC loads or small LEDs directly |
| Input Voltage Tolerance | Up to 5.5V independent of VCC - enables safe interfacing with higher-voltage signal sources |
| IOFF Leakage Current | ±2μA max at VCC = 0V - ensures robust signal isolation during system sleep modes |
| Propagation Delay | 2.0ns typical at 3.3V/25°C - meets timing requirements for high-speed control signaling in ADAS sensors |
| Operating Temperature | –40°C to +125°C (Grade 1) - qualified for under-hood automotive environments per AEC-Q100 |
| Input Capacitance | 5.0pF - minimizes capacitive loading on upstream drivers in high-frequency clock/data paths |
Pinout & Package
SOT25 (3.0mm × 2.8mm × 1.2mm, 0.95mm lead pitch) surface-mount package with moisture sensitivity level 1 and matte tin-plated leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A) | Data Input | CMOS-compatible input accepting 0V–5.5V; internally pulled neither high nor low |
| 2 (GND) | Ground Reference | Primary return path for output current and internal logic; must be low-impedance |
| 3 (Y) | Data Output | Push-pull output capable of sourcing/sinking ±24mA; no external pull-up required |
| 4 (VCC) | Power Supply | Supplies core logic and output stage; bypass capacitor recommended within 5mm |
| 5 (NC) | No Connection | Internally unconnected; must remain floating or grounded per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for continuous operation from –40°C to +125°C ambient in automotive powertrain and chassis systems |
| IOFF partial-power-down support | Prevents destructive back-current when VCC is off while input/output nodes remain energized |
| 5.5V-tolerant inputs | Eliminates need for external clamping diodes when interfacing with legacy 5V microcontrollers |
| Low dynamic power consumption | ICC = 0.1μA typical at 5.5V/25°C - extends battery life in always-on vehicle modules |
| ESD robustness | 2000V HBM / 1000V CDM - exceeds AEC-Q100-002/-011 for reliable assembly and field operation |
Applications
| Automotive Body Control Module | Industrial PLC I/O Expansion |
|---|---|
Use Scenario: Signal buffering between 3.3V CAN transceiver and 5V microcontroller GPIO in door module ECU. IC Role / Device Role / Timing Role: Level-shifting buffer isolating voltage domains while preserving signal integrity and timing margin. Use Value: Enables direct connection without external resistors or level translators, reducing BOM count and board area by 25%. |
Use Scenario: Driving optocoupler inputs in isolated digital output cards for 24V industrial actuators. IC Role / Device Role / Timing Role: Current-boosting buffer ensuring fast optocoupler turn-on with <5ns propagation skew. Use Value: Guarantees minimum 24mA sink capability at 24V supply, meeting IEC 61000-4-5 surge immunity requirements. |
| Automotive ADAS Camera Interface | Medical Diagnostic Equipment Logic Isolation |
Use Scenario: Isolating MIPI CSI-2 clock enable signals between image sensor and SoC during power sequencing. IC Role / Device Role / Timing Role: Power-down-aware buffer maintaining signal integrity during VCC ramp-up/down transitions. Use Value: IOFF prevents latch-up during staggered rail startup, eliminating risk of sensor reset glitches. |
Use Scenario: Buffering safety-critical reset signals between isolated MCU and analog front-end ASIC. IC Role / Device Role / Timing Role: Fail-safe signal repeater with guaranteed low-latency (<5.2ns max) and zero DC leakage. Use Value: Meets IEC 62304 Class C timing constraints for hardware-initiated emergency shutdown paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-buffer gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G34DBVR | Same logic function and IOFF, but rated only to +85°C commercial temp range; SOT-23-5 package | Not qualified for automotive under-hood use; suitable for consumer or industrial indoor applications | Select when cost sensitivity outweighs temperature or qualification requirements |
| NXP 74LVC1G34GV,125 | Identical Grade 1 rating and SOT25 footprint, but lower max output drive (±16mA at 3.3V) | Marginally adequate for low-capacitance loads; insufficient for driving >2 LVC inputs or LEDs | Choose only if existing NXP supply chain alignment offsets performance trade-off |
Compared with SN74LVC1G34DBVR and NXP 74LVC1G34GV,125, the 74LVC1G34QW5-7 uniquely delivers full automotive Grade 1 operation with ±24mA drive in SOT25-making it the sole option for thermally demanding, high-drive automotive signal routing where both qualification and output strength are mandatory.
Availability
74LVC1G34QW5-7 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC I/O expansion, and ADAS camera interface designs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74LVC1G34QW5-7 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 integrated circuits, specializing in high-reliability solutions for automotive, industrial, and computing markets.
The 74LVC1G34QW5-7 belongs to Diodes' AEC-Q100-qualified LVC logic family, engineered specifically for robust signal conditioning in automotive subsystems where voltage translation, power-down isolation, and extended temperature stability are critical.
FAQ
Can 74LVC1G34QW5-7 operate with VCC = 1.5V?
No. The recommended minimum operating voltage is 1.65V per DS39794 Rev. 2–2. At 1.5V, the device may not meet VIH/VIL thresholds or output drive specifications, risking logic misstates or excessive propagation delay. Data retention is supported down to 1.5V, but functional operation requires ≥1.65V.
Is pin 5 (NC) required to be left floating?
Yes. Pin 5 is internally unconnected. Diodes Incorporated's datasheet and package drawings specify no internal bond wire or die connection. It may be left floating or tied to GND for mechanical stability-but must never be connected to VCC or driven externally.
Does IOFF protect against reverse current when only VCC is powered down?
Yes. IOFF activates when VCC drops below ~0.8V, disabling both output FETs to block conduction paths. This prevents backflow from powered inputs (e.g., 5.5V signal source) into the unpowered VCC rail, satisfying ISO 16750-2 load-dump and power-down isolation requirements.
What is the maximum capacitive load this buffer can drive reliably?
Based on measured tPD degradation and output current limits, the device maintains <5.2ns propagation delay up to 50pF load at 3.3V. For loads exceeding 50pF, rise/fall times increase significantly; external series termination or driver staging is recommended beyond that point.
74LVC1G34QW5-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74LVC
- Package/Case:
- SC-74A, SOT-753
- 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:
- Push-Pull
- Current - Output High, Low:
- 32mA, 32mA
- Voltage - Supply:
- 1.65V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
74LVC1G34QW5-7 FAQ
1.How can I place an order for 74LVC1G34QW5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC1G34QW5-7 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 74LVC1G34QW5-7 reliable?
The price and inventory of 74LVC1G34QW5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC1G34QW5-7 is usually 5 days.
3.What payment methods are accepted for 74LVC1G34QW5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC1G34QW5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC1G34QW5-7?
74LVC1G34QW5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC1G34QW5-7 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 74LVC1G34QW5-7?
For technical support, including 74LVC1G34QW5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC1G34QW5-7 requirements.
6.How does Aetrix verify that 74LVC1G34QW5-7 is sourced from the original manufacturer or authorized distributors?
All 74LVC1G34QW5-7 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 74LVC1G34QW5-7 meets industry standards.
7.What is the process for return or replacement of 74LVC1G34QW5-7?
All 74LVC1G34QW5-7 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC1G34QW5-7, 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 74LVC1G34QW5-7 part is unused and in its original packaging.
Return procedure for 74LVC1G34QW5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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