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Diodes Incorporated 74LVC1G34Z-7
- Part No.:
- 74LVC1G34Z-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SOT-553
- Datasheet:
-
74LVC1G34Z-7.pdf
- Description:
- IC BUF NON-INVERT 5.5V SOT553
- Quantity:
- Payment:
- Shipping:
Inventory:3,745
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Product details
Overview
74LVC1G34Z-7 from Diodes Incorporated is a single non-inverting buffer gate with push-pull output, designed for voltage-level translation and signal conditioning in mixed-voltage digital systems. It operates from 1.65V to 5.5V, tolerates 5.5V inputs, supports partial power-down via IOFF, delivers ±24mA drive at 3.3V, and is qualified for industrial temperature range (–40°C to +125°C). It is commonly used in I/O buffering between 1.8V/2.5V/3.3V logic domains in portable computing peripherals.
For engineers reviewing the 74LVC1G34Z-7 datasheet, 74LVC1G34Z-7 pinout, 74LVC1G34Z-7 application, or 74LVC1G34Z-7 equivalent, key selection criteria include supply voltage flexibility, 5.5V-tolerant inputs, IOFF-enabled power-down isolation, propagation delay under 5.5ns at 3.3V, and SOT553 package thermal performance (θJA = 231°C/W).
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 both output FETs when VCC = 0V, preventing back-current flow from live buses into a powered-down system rail.
Input thresholds are voltage-ratio-based (VIH = 0.65×VCC to 0.7×VCC; VIL = 0.3×VCC to 0.35×VCC), enabling reliable interfacing across 1.65V–5.5V supply domains. The design meets JESD22 ESD standards (2kV HBM, 1kV CDM) and JESD78 latch-up immunity (>100mA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65V to 5.5V - Enables direct interface between 1.8V, 2.5V, 3.3V, and 5V logic families without level shifters. |
| Input Voltage Tolerance | Up to 5.5V - Allows safe connection of higher-voltage signals (e.g., 5V GPIO) to lower-VCC systems (e.g., 1.8V MCU). |
| Output Drive Strength | ±24mA at VCC = 3.3V - Sufficient to drive moderate capacitive loads (e.g., PCB traces, multiple CMOS inputs) without external buffers. |
| Propagation Delay | 0.5–5.5ns at VCC = 3.3V - Supports high-speed signal routing in timing-critical paths such as clock distribution or data strobes. |
| IOFF Leakage | ±10μA max at VCC = 0V - Ensures robust signal isolation during partial power-down, preventing bus contention or current leakage. |
| ESD Protection | 2kV HBM, 1kV CDM - Meets industrial-grade robustness requirements for board-level handling and end-equipment reliability. |
| Operating Temperature | –40°C to +125°C - Qualified for extended industrial and automotive-adjacent applications where ambient thermal stress is present. |
Pinout & Package
SOT553 is a 5-pin ultra-thin leadless package (1.5mm × 1.1mm × 0.5mm) with exposed pad for thermal enhancement and optimized for high-density PCB layouts. Pin 1 is marked by a beveled corner; the package uses NiPdAu terminal finish and is moisture-sensitivity Level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground Reference | Primary return path for output current and internal logic; must be low-impedance to minimize ground bounce. |
| 2 (A) | Input Signal | CMOS-compatible digital input accepting 0V–5.5V; no external pull-up/down required unless floating. |
| 3 (Y) | Output Signal | Push-pull buffered output driving downstream logic; capable of sourcing/sinking up to ±24mA at 3.3V. |
| 4 (NC) | No Connection | Internally unconnected; must remain unpopulated or left floating-no PCB trace or solder mask opening required. |
| 5 (VCC) | Power Supply | Single-supply rail (1.65–5.5V); decoupling capacitor (0.1μF ceramic) recommended within 2mm of this pin. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | 1.65V–5.5V operation enables drop-in use across legacy and modern low-voltage logic families without redesign. |
| 5.5V-Tolerant Inputs | Allows direct connection to 5V microcontrollers or legacy peripherals while powered from 1.8V or 2.5V rails. |
| IOFF Partial Power-Down | Automatically disables output FETs when VCC = 0V, eliminating backfeed current and protecting powered subsystems. |
| Low Dynamic Power | CPD = 16pF at 10MHz - minimizes switching power consumption in battery-powered or thermally constrained designs. |
| Industry-Leading ESD Robustness | 2kV HBM / 1kV CDM - reduces need for external protection components in consumer and industrial interfaces. |
Applications
| USB Peripheral Interface | Industrial Sensor Hub |
|---|---|
Use Scenario: Isolating 5V USB enumeration signals from a 1.8V microcontroller's GPIO during suspend mode. IC Role / Device Role: Signal buffer with IOFF-enabled power-down isolation on the D+ line. Use Value: Prevents 5V bus leakage into the unpowered 1.8V domain, eliminating risk of latch-up or false wake events. | Use Scenario: Level-shifting analog-to-digital converter (ADC) ready flags from 3.3V sensor subsystem to 2.5V host processor. IC Role / Device Role: Non-inverting voltage translator ensuring clean logic-high assertion across supply domains. Use Value: Eliminates need for discrete resistor-divider networks, improving noise immunity and reducing BOM count. |
| Laptop Keyboard Controller | Smartphone Display Interface |
Use Scenario: Driving column scan lines in a 60-key capacitive keyboard matrix powered from 3.3V while MCU runs at 1.2V. IC Role / Device Role: Output buffer amplifying weak MCU GPIO drive to meet column capacitance and timing requirements. Use Value: Guarantees <5.5ns propagation delay and ±24mA drive to maintain 10ms key-scan cycle integrity. | Use Scenario: Buffering MIPI DSI reset and enable signals between an application processor (1.2V I/O) and display timing controller (1.8V I/O). IC Role / Device Role: Low-capacitance (5pF CI), fast-propagation buffer preserving signal edge integrity. Use Value: Maintains sub-nanosecond timing margins critical for MIPI DSI command synchronization and display initialization. |
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 | SOT-23-5 package (larger footprint, θJA = 204°C/W), same electrical specs and IOFF behavior. | Better thermal dissipation in high-power-density layouts; requires larger PCB area and different reflow profile. | Select when thermal margin is prioritized over board space, or when SOT-23-5 is already standardized in production. |
| 74AUP1G34GW,125 | Lower static current (ICC = 0.9μA typ), wider VCC range (0.8–3.6V), but no 5.5V input tolerance. | Optimized for ultra-low-power battery operation below 2.5V; unsuitable for mixed 5V/3.3V interfacing. | Select only for sub-2.5V systems where 5V-tolerance is unnecessary and quiescent current is critical. |
Compared with SN74LVC1G34DBVR, the 74LVC1G34Z-7 saves 35% board area and improves thermal resistance by 14% in thin-profile portable designs; compared with 74AUP1G34GW,125, it trades 0.9μA ICC for essential 5.5V input tolerance and broader supply compatibility.
Availability
74LVC1G34Z-7 is available at Aetrix Electronics and suitable for USB peripheral interfaces, industrial sensor hubs, laptop keyboard controllers, and smartphone display interfaces requiring stable component supply and long-term manufacturability.
Supply support for 74LVC1G34Z-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 semiconductor company specializing in discrete, analog, and mixed-signal solutions, with manufacturing certified to IATF 16949 and quality systems aligned to AEC-Q200.
The 74LVC logic family targets high-speed, low-voltage digital interfacing with emphasis on voltage translation, power-down safety, and industrial temperature resilience.
FAQ
Can 74LVC1G34Z-7 be used with a 1.2V supply?
No. The absolute minimum operating supply voltage is 1.65V per the Recommended Operating Conditions table. At 1.2V, input thresholds become undefined, output drive collapses below specification, and device behavior is not guaranteed. For 1.2V systems, consider the 74AUP1G34 or similar ultra-low-voltage logic families.
Is the NC pin on 74LVC1G34Z-7 required to be grounded or left floating?
The NC (No Connection) pin is internally unconnected and must remain unpopulated-neither grounded nor tied to any net. PCB layout should omit copper, solder mask, and paste for this pad to avoid unintended coupling or mechanical stress on the die attach.
Does 74LVC1G34Z-7 support hot insertion into a live 5V bus?
Yes, when powered at ≥1.65V. Its 5.5V-tolerant inputs allow safe connection to active 5V buses without damage. However, hot insertion while unpowered (VCC = 0V) relies on IOFF functionality to block back-current; ensure no sustained >5.5V transient exceeds Absolute Maximum Ratings.
What is the maximum capacitive load this buffer can drive reliably at 3.3V?
Based on output drive strength (±24mA) and typical propagation delay (≤5.5ns at 3.3V), the device reliably drives ≤30pF loads while maintaining signal integrity and timing margins. For heavier loads (e.g., >50pF), add series termination or consider higher-drive alternatives like the 74LVC2G34.
74LVC1G34Z-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74LVC
- Package/Case:
- SOT-553
- 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-553
74LVC1G34Z-7 FAQ
1.How can I place an order for 74LVC1G34Z-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC1G34Z-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 74LVC1G34Z-7 reliable?
The price and inventory of 74LVC1G34Z-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC1G34Z-7 is usually 5 days.
3.What payment methods are accepted for 74LVC1G34Z-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC1G34Z-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC1G34Z-7?
74LVC1G34Z-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC1G34Z-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 74LVC1G34Z-7?
For technical support, including 74LVC1G34Z-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC1G34Z-7 requirements.
6.How does Aetrix verify that 74LVC1G34Z-7 is sourced from the original manufacturer or authorized distributors?
All 74LVC1G34Z-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 74LVC1G34Z-7 meets industry standards.
7.What is the process for return or replacement of 74LVC1G34Z-7?
All 74LVC1G34Z-7 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC1G34Z-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 74LVC1G34Z-7 part is unused and in its original packaging.
Return procedure for 74LVC1G34Z-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
74LVC1G34Z-7 Tags
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