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Diodes Incorporated 74LVC1G125FW5-7
- Part No.:
- 74LVC1G125FW5-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 6-XFDFN
- Datasheet:
-
74LVC1G125FW5-7.pdf
- Description:
- IC BUFF NON-INVERT 5.5V 6XFDFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,000
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Product details
Overview
74LVC1G125FW5-7 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-enabling use in portable computing and peripheral interfaces.
For engineers reviewing the 74LVC1G125FW5-7 datasheet, 74LVC1G125FW5-7 pinout, 74LVC1G125FW5-7 application, or 74LVC1G125FW5-7 equivalent, key selection criteria include its 1.0mm × 1.0mm X1-DFN1010-6 (Type B) package, 3.1ns typical disable time (tDIS) at 3.3V, ±100μA IOFF leakage, and compatibility with TTL logic levels in space-constrained embedded designs.
Technical Context
This device implements a CMOS-based single-gate buffer with active-low 3-state enable (OE), where output Y follows input A when OE is low and enters high-impedance when OE is high. Its IOFF architecture actively disables both output FETs during power-down, preventing back-current flow even when VCC = 0V and I/O pins are biased.
The logic supports wide VCC operation (1.65–5.5V) while maintaining defined VIH/VIL thresholds across voltage bands-e.g., VIH = 0.7×VCC at 4.5–5.5V-and guarantees propagation delay ≤6.0ns (tpd) and disable time ≤6.5ns (tdis) over –40°C to +125°C.
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 level shifters. |
| Input Voltage Tolerance | Up to 5.5V - allows safe connection to higher-voltage buses while powered from lower VCC (e.g., 1.8V). |
| Output Drive Strength | ±24mA at VCC = 3.3V - sufficient to drive multiple LVC loads or short PCB traces without signal degradation. |
| IOFF Leakage Current | ±200μA max at –40°C to +125°C - ensures robust isolation during system sleep modes with no risk of backfeeding. |
| Propagation Delay | ≤6.0ns at VCC = 3.3V, TA = –40°C to +125°C - supports >100MHz data rates in timing-critical control paths. |
| Disable Time (tDIS) | ≤6.5ns at VCC = 3.3V, TA = –40°C to +125°C - critical for fast bus arbitration and dynamic signal gating. |
| ESD Protection | 2kV HBM, 1kV CDM, 200V MM - exceeds JEDEC standards for handling robustness in assembly and field use. |
Pinout & Package
X1-DFN1010-6 (Type B) package: 1.0mm × 1.0mm × 0.5mm body, 0.35mm pad pitch, bottom-side thermal pad not electrically connected. Exposed pad is NC per datasheet; solder mask defined land pattern required.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A) | Data Input | CMOS-compatible input accepting 0–5.5V; internally pulled neither high nor low - must be driven or terminated. |
| 2 (OE) | Active-Low Output Enable | Low = output enabled (Y = A); High = output disabled (Y = high-Z); 5.5V-tolerant regardless of VCC. |
| 3 (GND) | Ground Reference | Primary return path for all internal logic and output current; must be low-inductance connection to system ground plane. |
| 4 (Y) | 3-State Output | Non-inverting buffered output; sinks or sources up to ±24mA; high-Z state leakage ≤20μA at 3.6V. |
| 5 (VCC) | Power Supply | Core supply for logic and output drivers; bypass capacitor (100nF) required within 2mm of this pin. |
| 6 (NC) | No Connection | Internally unconnected silicon pad; must remain floating - no trace, no solder, no thermal relief. |
Key Features
| Feature | Design Value |
|---|---|
| Wide VCC range (1.65–5.5V) | Eliminates need for external voltage translators in multi-rail systems such as USB-C PD controllers or display interface bridges. |
| 5.5V-tolerant inputs | Permits direct connection to legacy 5V GPIO or UART lines while operating from 1.8V or 2.5V rails - reduces BOM count. |
| IOFF partial power-down | Prevents destructive current flow from live I/O pins into unpowered VCC domains - essential for hot-plug and battery-backed subsystems. |
| ±24mA output drive | Drives 15pF load with <6ns delay at 3.3V - suitable for fanout to three LVC gates or 5cm microstrip trace without termination. |
| Low dynamic power (Cpd = 19pF) | Reduces switching current by >50% vs. older LV series - extends battery life in always-on sensor nodes and wearable devices. |
Applications
| USB Peripheral Isolation | Mobile Device Power Sequencing |
|---|---|
|
Use Scenario: Isolating USB D+ and D− lines between AP and USB PHY during suspend/resume cycles in smartphones. IC Role / Device Role / Timing Role: 3-state buffer controlled by PMIC's SLEEP signal to disconnect PHY from AP bus during low-power mode. Use Value: Prevents back-current from 3.3V PHY into 1.8V AP domain during VCC ramp-down, eliminating latch-up risk and meeting USB-IF power-state compliance. |
Use Scenario: Enabling/disabling clock or reset signals to sub-systems (e.g., camera, audio codec) based on SoC power state. IC Role / Device Role / Timing Role: Non-inverting buffer with OE tied to PMIC rail-good signal to gate clock delivery only when supply is stable. Use Value: Ensures clean, glitch-free clock enable with <6.5ns disable time - avoids metastability in downstream PLLs during power transitions. |
| IoT Sensor Hub Level Shifting | Industrial HMI Display Interface |
|
Use Scenario: Translating I²C signals between 3.3V MCU and 5V analog sensor modules in battery-powered environmental monitors. IC Role / Device Role / Timing Role: Bidirectional level shifter implemented using two 74LVC1G125s (one per direction) with OE controlled by bus arbitration logic. Use Value: Achieves 5.5V-tolerant input + 3.3V output drive without external pull-ups or MOSFETs - reduces footprint by 40% vs. discrete solutions. |
Use Scenario: Isolating SPI command lines between 1.8V FPGA and 5V display driver IC in medical panel displays. IC Role / Device Role / Timing Role: Unidirectional buffer placed on FPGA side, with OE synchronized to display frame blanking interval. Use Value: Guarantees <6ns propagation delay and <6.5ns disable time - preserves SPI timing margins at 25MHz while blocking noise coupling during display update. |
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 and 1.65–5.5V range; uses SOT-23-5 (2.9×1.6mm), larger footprint and 2× higher θJA (204°C/W vs. 435°C/W). | Less suitable for ultra-dense layouts; requires more board area and has inferior thermal performance in sealed enclosures. | Select when legacy SMT placement equipment lacks fine-pitch DFN capability or when hand-soldering is required. |
| 74LVC1G125FS3-7 | Identical electrical specs but in X2-DFN0808-4 (0.8×0.8mm); smaller size but only 4 terminals - no NC pin, fixed pinout (A-OE-VCC-Y-GND). | Lacks NC pin flexibility for routing; pad pitch (0.48mm) is tighter than FW5's 0.35mm, increasing assembly yield risk at low-volume production. | Select when minimizing board area is absolute priority and layout allows diamond pad arrangement without signal crosstalk. |
Compared with SN74LVC1G125DBVR and 74LVC1G125FS3-7, the 74LVC1G125FW5-7 offers optimal balance of miniaturization (1.0×1.0mm), thermal resistance (435°C/W), and routing flexibility (6-pin with NC), making it preferred for next-gen portable and wearables where density and reliability coexist.
Availability
74LVC1G125FW5-7 is available at Aetrix Electronics and suitable for USB peripheral isolation, mobile power sequencing, IoT sensor hub level shifting, and industrial HMI display interface requiring stable component supply across high-mix, low-volume production runs.
Supply support for 74LVC1G125FW5-7 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, energy-efficient components for consumer, industrial, and automotive markets.
The 74LVC logic family targets low-voltage, low-power digital interfacing applications-designed specifically for mixed-supply systems where voltage translation, bus isolation, and partial power-down safety are mandatory.
FAQ
What is the maximum allowable input voltage on the A pin when VCC = 1.8V?
The A input is rated for up to 5.5V regardless of VCC level, per Absolute Maximum Ratings and Recommended Operating Conditions. This allows safe connection to 5V signals while the device operates from 1.8V, enabling robust level-shifting without external components.
Does the NC pin on the X1-DFN1010-6 package require grounding or leaving floating?
Pin 6 is explicitly designated "No Connection" in the datasheet and internal die layout. It must remain electrically floating-no trace, no solder mask opening, no thermal pad connection-to avoid parasitic coupling or ESD path disruption.
How does IOFF functionality behave when VCC = 0V and OE = HIGH?
When VCC = 0V and OE is HIGH, the IOFF circuit actively disables both output FETs, limiting leakage current to ±200μA max over temperature. This prevents back-current from live I/O pins (e.g., 3.3V bus) into the unpowered device, satisfying JESD78 Class I latch-up immunity.
Can this device drive a 50pF capacitive load at 10MHz while maintaining signal integrity?
Yes: with Cpd = 19pF and tpd ≤6ns, the device dissipates <1.2mW at 10MHz driving 50pF (calculated via P = C·V²·f). Measured VOL/VOH remain within spec (≤0.55V / ≥2.75V at 3.3V), ensuring >0.7V noise margin for LVC receivers under worst-case conditions.
74LVC1G125FW5-7 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:
- X1-DFN1010-6
74LVC1G125FW5-7 FAQ
1.How can I place an order for 74LVC1G125FW5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC1G125FW5-7 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 74LVC1G125FW5-7 reliable?
The price and inventory of 74LVC1G125FW5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC1G125FW5-7 is usually 5 days.
3.What payment methods are accepted for 74LVC1G125FW5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC1G125FW5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC1G125FW5-7?
74LVC1G125FW5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC1G125FW5-7 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 74LVC1G125FW5-7?
For technical support, including 74LVC1G125FW5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC1G125FW5-7 requirements.
6.How does Aetrix verify that 74LVC1G125FW5-7 is sourced from the original manufacturer or authorized distributors?
All 74LVC1G125FW5-7 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 74LVC1G125FW5-7 meets industry standards.
7.What is the process for return or replacement of 74LVC1G125FW5-7?
All 74LVC1G125FW5-7 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC1G125FW5-7, 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 74LVC1G125FW5-7 part is unused and in its original packaging.
Return procedure for 74LVC1G125FW5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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