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Diodes Incorporated 74LVC1G34W5-7
- Part No.:
- 74LVC1G34W5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-74A, SOT-753
- Datasheet:
-
74LVC1G34W5-7.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V SOT25
- Quantity:
- Payment:
- Shipping:
Inventory:11,456
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Product details
Overview
74LVC1G34W5-7 from Diodes Incorporated is a single CMOS 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 IOFF partial power-down mode, delivers ±24mA drive at 3.3V, and features ESD protection exceeding 2000V HBM - used in notebook I/O expansion, USB peripheral interface logic, and power management enable-path isolation.
For engineers reviewing the 74LVC1G34W5-7 datasheet, 74LVC1G34W5-7 pinout, 74LVC1G34W5-7 application, or 74LVC1G34W5-7 equivalent, key selection criteria include supply voltage flexibility (1.65–5.5V), 5.5V-tolerant inputs for level shifting, IOFF-enabled backflow prevention during power sequencing, and SOT25 package compatibility with high-density PCB layouts.
Technical Context
This device implements a non-inverting positive Boolean function (A = Y) using standard CMOS logic architecture. Its IOFF circuit actively disables the output when VCC = 0V, blocking reverse current flow between powered and unpowered domains - critical for hot-swap and partial-power-down system architectures.
Input thresholds are dynamically scaled with VCC (e.g., VIH = 0.7×VCC at 4.5–5.5V), ensuring reliable TTL- and LVTTL-compatible interfacing across supply voltages. Propagation delay is specified down to 0.5ns (typ.) at 5.0V, with load-dependent timing validated under 30–50pF capacitive conditions per JEDEC test setup.
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 domains without external level shifters. |
| Input Voltage Tolerance | Up to 5.5V - allows safe connection of higher-voltage signals (e.g., 5V GPIO) to lower-VCC logic without clamping diodes or resistors. |
| IOFF Leakage Current | ±10μA max - ensures negligible current backflow during power-down, protecting downstream circuits and enabling safe bus sharing. |
| Output Drive Strength | ±24mA at VCC = 3.3V - sufficient to drive multiple LVC/LVTTL loads or moderate PCB trace capacitance without buffering. |
| Propagation Delay | 0.5ns (min) to 5.5ns (max) at VCC = 3.3V - supports high-speed control signaling in real-time I/O paths and clock distribution fanout. |
| ESD Protection | >2000V HBM, >1000V CDM - meets industrial-grade robustness requirements for board-level handling and end-equipment reliability. |
| Operating Temperature | –40°C to +125°C - qualified for extended-temperature operation in automotive cabin modules and industrial controllers. |
Pinout & Package
SOT25 (5-pin SC-74A) package: compact surface-mount outline with exposed pad not present; moisture sensitivity level 1; tin-plated leads compliant with MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A) | Data Input | CMOS-compatible input accepting 0V–5.5V; internally biased; requires termination to VCC or GND if unused. |
| 2 (GND) | Ground Reference | Primary return path for output current and internal logic; must be low-impedance connection to system ground plane. |
| 3 (Y) | Data Output | Push-pull CMOS output capable of sourcing/sinking ±24mA; no external pull-up/down required for rail-to-rail switching. |
| 4 (NC) | No Connection | Internally unconnected die bond pad; must remain floating - no PCB trace or solder mask opening required. |
| 5 (VCC) | Power Supply | Single-supply rail for core logic and output drivers; bypass capacitor (100nF) recommended within 5mm of this pin. |
Key Features
| Feature | Design Value |
|---|---|
| Wide Supply Range | 1.65V–5.5V operation eliminates need for separate voltage regulators in multi-rail embedded systems. |
| 5.5V-Tolerant Inputs | Enables direct connection to legacy 5V peripherals without external resistive dividers or dedicated translators. |
| IOFF Partial Power-Down | Prevents destructive back-current when VCC is off, supporting live-insertion and dynamic power gating in modular designs. |
| Low Dynamic Power | Typical CPD = 16pF - minimizes switching current and heat generation in battery-powered portable devices. |
| Industry-Standard Pinout | SOT25 pin assignment matches 74LVC1Gxx family - simplifies layout reuse and BOM consolidation across logic functions. |
Applications
| USB Peripheral Interface | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Isolating and translating enable/control signals between 3.3V microcontroller and 5V USB hub controller IC. IC Role / Device Role / Timing Role: Non-inverting buffer providing level-shifted, slew-controlled enable pulse with IOFF protection during USB suspend/resume transitions. Use Value: Eliminates risk of backfeed damage during VBUS removal while maintaining fast edge rates (<5ns) for reliable USB enumeration timing. |
Use Scenario: Driving analog multiplexer select lines from a 1.8V FPGA I/O bank in a multi-channel temperature monitoring module. IC Role / Device Role / Timing Role: Voltage translator and current booster ensuring full logic swing and noise margin at the multiplexer's 3.3V control inputs. Use Value: Guarantees >2.2V VIH at 3.3V VCC even with 12mA load, preventing mis-selection due to marginal input thresholds. |
| Automotive Infotainment Display Enable | PCB-Level Power Sequencing Control |
|
Use Scenario: Enabling backlight LED driver ICs only after main SoC power rails stabilize in a car head unit. IC Role / Device Role / Timing Role: Glitch-free buffer with controlled propagation delay (0.5–5.5ns) synchronizing enable assertion to power-good status. Use Value: Prevents LED driver latch-up by ensuring clean, monotonic enable transition with <10ns skew across parallel channels. |
Use Scenario: Controlling power-on reset sequencing for dual-core processor and memory subsystems in networking equipment. IC Role / Device Role / Timing Role: Isolation gate that blocks reset release until auxiliary 1.2V rail reaches regulation, leveraging IOFF during pre-regulation phase. Use Value: Avoids race conditions by holding downstream reset asserted until all supplies meet tolerance, verified over –40°C to +125°C. |
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 | TI part in SOT-23-5 (same pinout); identical VCC range and IOFF spec; slightly higher ICC (10μA max vs. 1μA typical). | Same functional role but tighter thermal resistance (θJA = 275°C/W vs. 204°C/W) limits high-duty-cycle use in thermally constrained layouts. | Select when TI ecosystem alignment or existing TI qualification documentation is required; verify thermal derating at >85°C ambient. |
| 74AUP1G34GW,125 | Nexperia part in TSOP-5; lower static current (0.9μA max), wider temp range (–40°C to +125°C), but reduced drive (±4mA at 1.2V). | Better suited for ultra-low-power always-on sensor nodes; insufficient drive for driving >2 LVC loads or long traces at 3.3V. | Choose for battery-operated edge devices where sub-μA quiescent current dominates over speed or drive strength. |
Compared with SN74LVC1G34DBVR and 74AUP1G34GW,125, the 74LVC1G34W5-7 offers superior output drive at 3.3V and lower thermal resistance in SOT25, making it optimal for space-constrained, medium-speed I/O buffering where robustness and ease of layout reuse are prioritized.
Availability
74LVC1G34W5-7 is available at Aetrix Electronics and suitable for USB peripheral interface, industrial sensor signal conditioning, and automotive infotainment display enable requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for 74LVC1G34W5-7 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 ICs, with design and manufacturing operations certified to IATF 16949 and ISO 9001 standards.
The 74LVC logic family targets high-speed, low-voltage digital interfacing in consumer, computing, and industrial applications - engineered for interoperability across voltage domains and robustness in real-world signal integrity environments.
FAQ
Can 74LVC1G34W5-7 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 - use 74AUP1G34 for true 1.2V operation.
What is the maximum capacitive load this buffer can drive reliably?
Based on switching characteristics and load circuit definition in the datasheet, the device is characterized up to 50pF (including trace and probe capacitance). For loads exceeding 50pF, propagation delay increases linearly; sustained operation above 100pF may cause excessive rise/fall times or output overshoot without series termination.
Is the NC pin on SOT25 required to be left floating?
Yes. Pin 4 is internally unconnected; connecting it to any net (VCC, GND, or signal) introduces parasitic coupling and violates the package's electrical model. PCB layout must omit copper, solder mask, and stencil aperture for this pin to prevent assembly defects or latent ESD path formation.
Does IOFF functionality work when VCC = 0.5V?
No. IOFF activates only when VCC is below ~0.8V (per characterization data), and leakage remains within ±10μA only when VCC = 0V. At 0.5V, the output stage enters an undefined state with elevated leakage and potential contention - ensure VCC is fully discharged before asserting signals on Y or A pins.
74LVC1G34W5-7 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:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-25
74LVC1G34W5-7 FAQ
1.How can I place an order for 74LVC1G34W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC1G34W5-7 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 74LVC1G34W5-7 reliable?
The price and inventory of 74LVC1G34W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC1G34W5-7 is usually 5 days.
3.What payment methods are accepted for 74LVC1G34W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC1G34W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC1G34W5-7?
74LVC1G34W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC1G34W5-7 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 74LVC1G34W5-7?
For technical support, including 74LVC1G34W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC1G34W5-7 requirements.
6.How does Aetrix verify that 74LVC1G34W5-7 is sourced from the original manufacturer or authorized distributors?
All 74LVC1G34W5-7 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 74LVC1G34W5-7 meets industry standards.
7.What is the process for return or replacement of 74LVC1G34W5-7?
All 74LVC1G34W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC1G34W5-7, 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 74LVC1G34W5-7 part is unused and in its original packaging.
Return procedure for 74LVC1G34W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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