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Diodes Incorporated 74LVC1G34QSE-7
- Part No.:
- 74LVC1G34QSE-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
74LVC1G34QSE-7.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V SOT353
- Quantity:
- Payment:
- Shipping:
Inventory:6,974
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Product details
Overview
74LVC1G34QSE-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 5.5V-tolerant inputs and IOFF partial-power-down protection. It is AEC-Q100 Grade 1 qualified (–40°C to +125°C) and used for voltage-level shifting and signal isolation in automotive body control modules.
For engineers reviewing the 74LVC1G34QSE-7 datasheet, 74LVC1G34QSE-7 pinout, 74LVC1G34QSE-7 application, or 74LVC1G34QSE-7 equivalent, key selection criteria include IOFF-enabled power-down safety, 5.5V input tolerance in mixed-voltage systems, ±24mA output drive capability at 3.3V, and SOT353 package thermal resistance (θJA = 385°C/W).
Technical Context
This buffer implements a simple positive Boolean function (A = Y) with no internal inversion or delay compensation. Its IOFF circuit actively disables output leakage during VCC = 0V, preventing backflow current in partial-power-down systems - critical for automotive domain controllers with staggered rail sequencing.
Input voltage tolerance up to 5.5V regardless of VCC enables direct interfacing with legacy 5V logic while powered from 1.8V or 3.3V rails. Propagation delay is specified from 0.5ns (typ, 5V) to 4.0ns (typ, 1.8V), with input transition rate support up to 20 ns/V at 1.8V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65V to 5.5V - supports dual-rail systems and brown-out resilience down to 1.65V logic operation. |
| Output Drive Current | ±24mA at VCC = 3.0V - sufficient to directly drive multiple LVC loads or small LEDs without external buffering. |
| Input Voltage Tolerance | Up to 5.5V independent of VCC - enables safe 5V-to-3.3V level translation without external resistors or clamps. |
| IOFF Leakage | ±2μA max at VCC = 0V - ensures <1μA backfeed into powered downstream circuits during partial shutdown. |
| Propagation Delay | 0.5ns (typ) to 4.1ns (max) at 5.0V - meets timing-critical signal routing in ADAS sensor interface paths. |
| Operating Temperature | –40°C to +125°C (Grade 1) - validated for under-hood automotive environments per AEC-Q100. |
| ESD Robustness | 2000V HBM, 1000V CDM - exceeds AEC-Q100-002/-011 requirements for manufacturing and field reliability. |
Pinout & Package
SOT353 (5-pin, 2.15mm × 2.1mm × 1.1mm, 0.65mm pitch) - ultra-compact surface-mount package with exposed pad not present; moisture sensitivity level 1 (J-STD-020).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A) | Data Input | CMOS-compatible input accepting 0V–5.5V; internally terminated with no external bias required. |
| 2 (GND) | Ground Reference | Primary return path for output current and supply decoupling; must be low-inductance connection. |
| 3 (Y) | Data Output | Push-pull CMOS output capable of sourcing/sinking ±24mA; no external pull-up/down needed. |
| 4 (VCC) | Power Supply | Single-supply rail (1.65–5.5V); requires local 100nF ceramic decoupling within 5mm. |
| 5 (NC) | No Connection | Internally unconnected silicon pad; must remain floating - no PCB trace or solder mask opening required. |
Key Features
| Feature | Design Value |
|---|---|
| IOFF Partial-Power-Down Protection | Disables output stage when VCC = 0V, limiting back-current to ±2μA - essential for hot-swap and domain-isolation architectures. |
| 5.5V-Tolerant Inputs | Accepts 5V signals while VCC = 1.8V/2.5V/3.3V - eliminates level-shifter ICs in mixed-voltage MCU peripheral interfaces. |
| Low Dynamic Power | ICC = 0.1μA typical at VCC = 5.5V, TA = 25°C - reduces quiescent load on always-on vehicle battery rails. |
| AEC-Q100 Grade 1 Qualification | Validated across –40°C to +125°C ambient with full parametric testing - certified for engine bay and transmission control units. |
| SOT353 Thermal Performance | θJA = 385°C/W (FR-4, 2oz Cu) - enables operation at full drive strength up to +105°C ambient without derating. |
Applications
| Automotive Body Control Module | Industrial PLC I/O Expansion |
|---|---|
Use Scenario: Signal buffering between 5V CAN transceiver status lines and 3.3V microcontroller GPIOs in door module ECUs. IC Role / Device Role / Timing Role: Non-inverting level translator and drive booster ensuring clean edge integrity across voltage domains. Use Value: Eliminates external resistor dividers and reduces BOM count by one component while maintaining AEC-Q100 compliance. |
Use Scenario: Isolating digital output enable signals from programmable logic controller CPU to 24V solenoid driver stages during firmware reset. IC Role / Device Role / Timing Role: Power-down-safe buffer that blocks fault current when CPU rail collapses before I/O rail. Use Value: Prevents unintended actuator activation during brown-out recovery sequences via IOFF behavior. |
| Automotive Infotainment Display Interface | Medical Diagnostic Equipment Logic Interface |
Use Scenario: Driving backlight PWM enable lines from low-voltage application processor to high-current LED driver ICs. IC Role / Device Role / Timing Role: High-speed (≤4.1ns max tPD) buffer ensuring precise duty-cycle preservation at 100kHz+ PWM rates. Use Value: Maintains display brightness fidelity without added propagation skew or jitter in timing-critical backlight control paths. |
Use Scenario: Interfacing isolated SPI bus signals between patient-monitoring SoC and analog front-end ADCs in Class II medical devices. IC Role / Device Role / Timing Role: Low-noise, ESD-hardened buffer providing galvanic separation between digital and analog domains. Use Value: Meets IEC 60601-1 ESD immunity requirements (≥2kV HBM) without additional transient suppression components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-buffer gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NXP 74LVC1G34GV,125 | SOT753 package (larger footprint, θJA = 290°C/W), same electrical specs and AEC-Q100 Grade 1 rating. | Better thermal performance but occupies 3.1×2.5mm area - unsuitable for space-constrained automotive clusters. | Select when board layout allows larger package and higher continuous power dissipation is required. |
| Toshiba TC7S34FU,LF | Wider VCC range (1.65–6.0V), lower drive (±8mA @ 3.3V), no IOFF, commercial temp only (–40°C to +85°C). | Lacks AEC-Q100 qualification and partial-power-down capability - invalid for automotive safety-critical domains. | Acceptable only for cost-sensitive industrial controls where temperature and power-down safety are non-critical. |
Compared with NXP 74LVC1G34GV,125, the 74LVC1G34QSE-7 offers superior board-area efficiency in SOT353; compared with TC7S34FU,LF, it delivers automotive-grade reliability, IOFF protection, and 3× higher output drive - making it the sole qualified choice for AEC-Q100-compliant designs.
Availability
74LVC1G34QSE-7 is available at Aetrix Electronics and suitable for automotive body electronics, industrial PLC I/O modules, and medical diagnostic equipment requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant traceability.
Supply support for 74LVC1G34QSE-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 solutions for automotive, industrial, and computing markets with IATF 16949-certified production.
The 74LVC logic family targets low-voltage, mixed-supply digital interfacing - designed specifically for robust voltage translation, signal conditioning, and power-aware logic buffering in harsh-environment applications.
FAQ
Can 74LVC1G34QSE-7 operate with VCC = 1.5V?
No. The absolute minimum recommended VCC is 1.65V per DS39794 Rev. 2–2. At 1.5V, output drive falls below specification, VIH/VIL thresholds become undefined, and AEC-Q100 qualification no longer applies. Data retention is supported down to 1.5V, but functional operation requires ≥1.65V.
Is pin 5 (NC) allowed to be tied to GND or VCC?
No. Pin 5 is a true no-connect - internally unconnected silicon. Connecting it to any potential violates the SOT353 mechanical design and risks latent die damage during reflow or thermal cycling. It must remain electrically and physically floating per Diodes Incorporated package documentation.
Does IOFF functionality require external circuitry to activate?
No. IOFF is fully automatic and intrinsic: when VCC drops below ~0.2V, the output stage transitions to high-impedance state without control signals, pull-ups, or configuration. This behavior is characterized over temperature and voltage and requires zero external components to implement.
What is the maximum capacitive load this buffer can drive reliably?
Per switching characteristics data, the device maintains specified tPD and waveform integrity up to 50pF load capacitance (tested with 500Ω/1kΩ RL). Driving >50pF may increase rise/fall times beyond 5.2ns (3.3V) or cause overshoot; for >75pF loads, consider adding series termination or selecting a higher-drive variant.
74LVC1G34QSE-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74LVC
- 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:
- 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-353
74LVC1G34QSE-7 FAQ
1.How can I place an order for 74LVC1G34QSE-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC1G34QSE-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 74LVC1G34QSE-7 reliable?
The price and inventory of 74LVC1G34QSE-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC1G34QSE-7 is usually 5 days.
3.What payment methods are accepted for 74LVC1G34QSE-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC1G34QSE-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC1G34QSE-7?
74LVC1G34QSE-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC1G34QSE-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 74LVC1G34QSE-7?
For technical support, including 74LVC1G34QSE-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC1G34QSE-7 requirements.
6.How does Aetrix verify that 74LVC1G34QSE-7 is sourced from the original manufacturer or authorized distributors?
All 74LVC1G34QSE-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 74LVC1G34QSE-7 meets industry standards.
7.What is the process for return or replacement of 74LVC1G34QSE-7?
All 74LVC1G34QSE-7 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC1G34QSE-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 74LVC1G34QSE-7 part is unused and in its original packaging.
Return procedure for 74LVC1G34QSE-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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