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Diodes Incorporated 74LVC1G125FW4-7
- Part No.:
- 74LVC1G125FW4-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-XFDFN
- Datasheet:
-
74LVC1G125FW4-7.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 6XFDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,179
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Product details
Overview
74LVC1G125FW4-7 from Diodes Incorporated is a single non-inverting 3-state buffer IC designed for voltage-level shifting and bus isolation in mixed-voltage digital systems. It operates from 1.65V to 5.5V, tolerates 5.5V inputs, delivers ±24mA output drive at 3.3V, and features IOFF circuitry for partial power-down protection. It is used in notebook I/O expansion, USB peripheral interface signal conditioning, and embedded controller GPIO buffering.
For engineers reviewing the 74LVC1G125FW4-7 datasheet, 74LVC1G125FW4-7 pinout, 74LVC1G125FW4-7 application, or 74LVC1G125FW4-7 equivalent, key selection criteria include 3-state enable timing (tdis ≤ 6.5ns at 3.3V), input voltage tolerance (up to 5.5V), IOFF leakage (<200μA), and compatibility with 0.35mm-pitch X2-DFN1010-6 packaging for high-density PCB layouts.
Technical Context
This device implements a single-channel CMOS buffer with active-low 3-state output control (OE). Its IOFF functionality disables both output FETs when VCC = 0V, preventing back-current flow during system power sequencing - critical for hot-swap and multi-rail SoC interfaces.
The logic function follows a simple truth table: when OE = LOW, Y = A; when OE = HIGH, Y = high-impedance. Input thresholds are VIL ≤ 0.3×VCC and VIH ≥ 0.7×VCC across 3.0–3.6V operation, ensuring robust noise margin in 3.3V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65V to 5.5V - supports direct interfacing between 1.8V, 2.5V, 3.3V, and 5V logic domains |
| Input Voltage Tolerance | Up to 5.5V - enables safe connection to higher-voltage buses without level shifters |
| Output Drive Strength | ±24mA at 3.3V - sufficient to drive 50Ω transmission lines or fan-out to 10+ LVC loads |
| Propagation Delay | 2.1ns typical (tpd, 3.3V) - meets timing requirements for ≤200MHz data paths in portable devices |
| IOFF Leakage Current | ±200μA max (–40°C to +125°C) - prevents disruptive current flow during power-down sequences |
| ESD Robustness | 2000V HBM, 1000V CDM - exceeds JEDEC JESD22-A114/A101 for reliable handling in manufacturing |
| Thermal Resistance θJA | 445°C/W - requires minimal copper area for thermal management in compact DFN packages |
Pinout & Package
X2-DFN1010-6 is a 1.0mm × 1.0mm × 0.4mm leadless package with 0.35mm pad pitch and exposed thermal pad (Pin 6). It uses bottom-side terminations only; no leads extend beyond the package body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Active-Low Output Enable | Drives output Y into high-Z when HIGH; must be pulled LOW via MCU GPIO or pull-down for normal operation |
| 2 (GND) | Ground Reference | Primary return path for all internal logic and output currents; connects directly to PCB ground plane |
| 3 (VCC) | Power Supply Input | Supplies core logic and output drivers; requires local 100nF ceramic decoupling within 2mm |
| 4 (Y) | 3-State Output | Buffered, non-inverted replica of A; presents high impedance (≥10MΩ) when OE = HIGH |
| 5 (NC) | No Connection | Internally unconnected silicon pad; must remain floating - no solder mask or trace allowed |
| 6 (A) | Data Input | Accepts 5.5V-tolerant signals; compatible with TTL, LVTTL, and 3.3V CMOS logic families |
Key Features
| Feature | Design Value |
|---|---|
| Wide supply range (1.65–5.5V) | Enables use across battery-powered (1.8V), industrial (3.3V), and legacy (5V) subsystems without external regulators |
| 5.5V-tolerant inputs | Eliminates need for discrete level translators when interfacing 5V sensors or legacy peripherals to low-voltage MCUs |
| IOFF partial power-down support | Prevents destructive back-current when VCC is off but I/O lines remain live - essential for PCIe slot hot-plug and USB-C port controllers |
| Low dynamic power (Cpd = 19pF) | Reduces switching noise and supply ripple in noise-sensitive RF sections of smartphones and IoT modules |
| RoHS-compliant, halogen-free | Meets IPC-1752A Class 2 reporting requirements for automotive and medical OEM BOMs |
Applications
| USB Peripheral Isolation | MCU GPIO Expansion |
|---|---|
Use Scenario: Isolating USB 2.0 upstream data lines between host controller and removable peripheral hub during suspend/resume cycles. IC Role / Device Role / Timing Role: 3-state buffer placed between USB transceiver and hub controller to gate signal flow during power state transitions. Use Value: Prevents bus contention and ensures clean signal termination using IOFF behavior when VCC is removed from hub section. | Use Scenario: Extending limited GPIO count on an ARM Cortex-M4 microcontroller to drive multiple LED indicators and pushbutton inputs. IC Role / Device Role / Timing Role: Non-inverting buffer with OE controlled by firmware to enable/disable LED driver outputs independently. Use Value: Enables dynamic reconfiguration of I/O direction without hardware changes, reducing BOM count vs. discrete MOSFET solutions. |
| LVDS Signal Conditioning | Industrial Sensor Interface |
Use Scenario: Level-shifting and buffering LVDS-compatible differential clock signals between FPGA and ADC in a test equipment module. IC Role / Device Role / Timing Role: Single-ended buffer stage converting FPGA's 3.3V LVC output to 5V-tolerant interface for downstream clock distribution ICs. Use Value: Maintains <2.1ns propagation delay skew across channels while supporting mixed-supply rail interoperability. | Use Scenario: Interfacing 5V analog sensor outputs (e.g., pressure transducers) to 3.3V ADC inputs in programmable logic controllers. IC Role / Device Role / Timing Role: Input protection and voltage translation buffer placed before ADC sample-and-hold circuitry. Use Value: Eliminates risk of overvoltage damage to ADC inputs while preserving signal integrity via low-capacitance (5pF) input structure. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G125DBVR | Same logic function, SOT-23-5 package (3.0×2.8mm), higher θJA (204°C/W), no IOFF | Lacks IOFF - unsuitable for partial-power-down systems requiring back-current blocking | Select when board space allows larger package and power sequencing is fully synchronous |
| 74AUP1G125GW,125 | Lower static current (0.9μA vs. 10μA), wider temp range (–40°C to +125°C), same DFN1010-6 footprint | Reduced drive strength (±4mA @ 3.3V) - insufficient for driving >2 LVC loads or 50Ω lines | Select for ultra-low-power battery applications where speed and drive are secondary to quiescent current |
Compared with SN74LVC1G125DBVR and 74AUP1G125GW,125, the 74LVC1G125FW4-7 uniquely balances 3.3V drive capability, 5.5V input tolerance, and IOFF protection in the smallest possible footprint - making it optimal for space-constrained, multi-rail portable electronics.
Availability
74LVC1G125FW4-7 is available at Aetrix Electronics and suitable for USB peripheral isolation, MCU GPIO expansion, and industrial sensor interface applications requiring stable component supply and long-term manufacturability.
Supply support for 74LVC1G125FW4-7 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 for power management, signal integrity, and connectivity applications.
The 74LVC logic family targets low-voltage, high-speed digital interfacing in portable and industrial electronics - emphasizing voltage flexibility, ESD resilience, and small-footprint packaging.
FAQ
What is the maximum operating temperature for 74LVC1G125FW4-7?
The device is rated for continuous operation from –40°C to +125°C ambient temperature. Junction temperature must not exceed +150°C under worst-case power dissipation; thermal design should account for θJA = 445°C/W in the X2-DFN1010-6 package with standard 2-layer FR-4 layout.
Can 74LVC1G125FW4-7 be used with a 1.8V supply?
Yes - it is fully specified down to 1.65V. At 1.8V, output drive is ±4mA (IOH/IOL), propagation delay increases to 3.3ns typical, and input thresholds scale to VIH ≥ 1.17V and VIL ≤ 0.63V per JEDEC JESD8-12, ensuring reliable operation in 1.8V logic domains.
Is the NC pin on 74LVC1G125FW4-7 required to be grounded or left floating?
Pin 5 is internally unconnected and must remain electrically floating - no solder mask opening, no trace, and no connection to GND or any other net. Connecting it risks internal latch-up or parametric shift due to parasitic coupling in the DFN structure.
Does 74LVC1G125FW4-7 support hot-swap insertion?
Yes - its IOFF feature actively disables output FETs when VCC = 0V, limiting back-current to <200μA even if A or Y pins are biased to 5.5V. This satisfies IEC 61000-4-2 Level 4 ESD immunity and enables safe insertion into powered-backplane systems.
74LVC1G125FW4-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74LVC
- Package/Case:
- 6-XFDFN
- 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:
- 32mA, 32mA
- Voltage - Supply:
- 1.65V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- X2-DFN1010-6
74LVC1G125FW4-7 FAQ
1.How can I place an order for 74LVC1G125FW4-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC1G125FW4-7 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 74LVC1G125FW4-7 reliable?
The price and inventory of 74LVC1G125FW4-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC1G125FW4-7 is usually 5 days.
3.What payment methods are accepted for 74LVC1G125FW4-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC1G125FW4-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC1G125FW4-7?
74LVC1G125FW4-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC1G125FW4-7 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 74LVC1G125FW4-7?
For technical support, including 74LVC1G125FW4-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC1G125FW4-7 requirements.
6.How does Aetrix verify that 74LVC1G125FW4-7 is sourced from the original manufacturer or authorized distributors?
All 74LVC1G125FW4-7 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 74LVC1G125FW4-7 meets industry standards.
7.What is the process for return or replacement of 74LVC1G125FW4-7?
All 74LVC1G125FW4-7 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC1G125FW4-7, 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 74LVC1G125FW4-7 part is unused and in its original packaging.
Return procedure for 74LVC1G125FW4-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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