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Diodes Incorporated 74LVC2G125RA3-7
- Part No.:
- 74LVC2G125RA3-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 8-XFDFN
- Datasheet:
-
74LVC2G125RA3-7.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,959
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Product details
Overview
74LVC2G125RA3-7 from Diodes Incorporated is a dual 3-state buffer gate in X2-DFN1210-8 package, operating from 1.65V to 5.5V supply, delivering ±24mA output drive at 3.3V with IOFF-enabled partial power-down protection and Schmitt-trigger inputs (100mV hysteresis at 3.0V). It enables voltage-level shifting and signal isolation in compact portable electronics.
For engineers reviewing the 74LVC2G125RA3-7 datasheet, 74LVC2G125RA3-7 pinout, 74LVC2G125RA3-7 application, or 74LVC2G125RA3-7 equivalent, key selection criteria include its 0.3 mm lead pitch DFN footprint, IOFF leakage <±20 μA during power-down, and guaranteed 4.4 ns propagation delay at 3.3V across –40°C to +125°C.
Technical Context
This device implements two independent non-inverting buffers, each with active-low 3-state enable (OE), supporting mixed-voltage system interfacing via 5.5V-tolerant inputs and rail-to-rail output swing. Its IOFF circuit blocks current backflow when VCC = 0V, enabling safe hot-insertion in powered-backplane systems.
The Schmitt-trigger inputs provide noise immunity against slow-rising signals (e.g., mechanical switch debouncing or RC-filtered control lines), while the low 17 pF power-dissipation capacitance ensures minimal dynamic loading on driving sources at 10 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65V to 5.5V - supports direct interface between 1.8V, 2.5V, 3.3V, and 5V logic domains without level shifters |
| Output Drive Strength | ±24mA at VCC = 3.3V - sufficient to drive 50Ω transmission lines or multiple CMOS inputs under load |
| Propagation Delay (tpd) | 4.4 ns max at VCC = 3.3V, TA = +125°C - enables reliable operation in sub-100 MHz data paths |
| IOFF Leakage Current | ±20 μA max at VCC = 0V - prevents damaging back-current into powered subsystems during partial shutdown |
| Input Hysteresis | 100mV typical at VCC = 3.0V - rejects >100mV of input noise without external filtering components |
| ESD Protection | 2000V HBM, >1000V CDM - exceeds JEDEC JESD22-A114 and JESD22-C101 for board-level robustness |
| Thermal Resistance θJA | 395°C/W - reflects thermal performance in standard FR-4 layout with minimal copper pour, guiding heatsinking decisions |
Pinout & Package
X2-DFN1210-8 package: 1.2 mm × 1.0 mm × 0.35 mm body, 0.3 mm lead pitch, exposed thermal pad (pin #4 GND), bottom-side terminations only.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Active-low enable for Buffer 1 | Drives 1Y high-impedance when logic high; asserts 1Y = 1A when logic low |
| 2 (1A) | Data input for Buffer 1 | 5.5V-tolerant CMOS input accepting slower edges due to Schmitt trigger |
| 3 (2Y) | Data output for Buffer 2 | 3-state output with rail-to-rail swing and ±24mA sink/source capability |
| 4 (GND) | Ground reference & thermal pad | Primary return path and thermal conduction node; must be soldered to PCB ground plane |
| 5 (2A) | Data input for Buffer 2 | Independent input with identical Schmitt-trigger and voltage tolerance as 1A |
| 6 (1Y) | Data output for Buffer 1 | Electrically isolated from 2Y; shares no internal coupling or timing dependency |
| 7 (2OE) | Active-low enable for Buffer 2 | Independent control of 2Y; allows asymmetric enable sequencing between buffers |
| 8 (VCC) | Power supply | Single-supply rail powering both buffers; IOFF remains functional even if VCC drops to 0V |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 3-state buffers | Enables bidirectional bus control or channel multiplexing without cross-talk or timing skew |
| IOFF partial power-down support | Prevents back-current flow when VCC = 0V, critical for PCIe hot-plug, USB suspend, or battery-backed subsystems |
| Schmitt-trigger inputs with 100mV hysteresis | Eliminates need for external RC filters on noisy control lines (e.g., reset, enable, or interrupt signals) |
| 5.5V-tolerant inputs on 1.65–5.5V supply | Allows direct connection to legacy 5V microcontrollers or sensors without external level translators |
| Low 5 pF disabled-output capacitance | Reduces capacitive loading on shared buses during 3-state mode, preserving signal integrity |
Applications
| USB Peripheral Interface | Mobile Device Power Sequencing |
|---|---|
|
Use Scenario: Isolating USB PHY control signals (e.g., ID, VBUS detect) from an application processor during suspend mode. IC Role / Device Role / Timing Role: Dual buffer provides independent enable control for signal direction and power-state gating. Use Value: IOFF prevents reverse current from 5V USB bus into 1.8V processor I/O during sleep, eliminating risk of latch-up. |
Use Scenario: Managing power-domain enable sequencing across multiple PMIC rails in smartphones or tablets. IC Role / Device Role / Timing Role: Buffers relay sequenced enable signals with precise propagation delay matching (<0.5 ns skew). Use Value: Schmitt-trigger inputs reject noise from switching regulators, ensuring clean edge transitions for rail startup timing. |
| Industrial Sensor Hub Interface | Compact SSD Controller Signal Isolation |
|
Use Scenario: Level-shifting analog sensor alert outputs (5V open-drain) to a 3.3V microcontroller GPIO. IC Role / Device Role / Timing Role: Acts as unidirectional level translator with 3-state disable during MCU reset. Use Value: 5.5V-tolerant inputs accept raw sensor alerts directly; 3-state mode isolates MCU during boot until firmware configures pins. |
Use Scenario: Isolating NAND flash command/address bus from host controller during low-power retention mode. IC Role / Device Role / Timing Role: Dual buffer gates isolate bidirectional CA bus segments with independent OE control per channel. Use Value: Low 17 pF enabled-output capacitance minimizes signal distortion on high-speed CA lines up to 100 MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC2G125DPWR (TI) | X2SON-8 package (1.45mm × 1.0mm), 0.5 mm pitch, θJA = 321°C/W | Larger footprint and lower thermal resistance; less suitable for ultra-compact layouts | Preferred when board assembly uses standard 0.5 mm pitch reflow profiles and thermal margin >70°C required |
| 74LVC2G125GM,132 (Nexperia) | XFDFN-8 package (1.25mm × 1.0mm), 0.35 mm pitch, IOFF leakage ±50 μA max | Higher IOFF leakage limits reliability in deep-sleep battery-powered systems | Acceptable for cost-sensitive consumer designs where standby current <1 μA is not required |
Compared with SN74LVC2G125DPWR and 74LVC2G125GM,132, the 74LVC2G125RA3-7 offers the smallest footprint (1.2×1.0 mm), tightest IOFF control (±20 μA), and best thermal performance among sub-1.3 mm DFN variants-making it optimal for space-constrained, low-quiescent-power portable designs.
Availability
74LVC2G125RA3-7 is available at Aetrix Electronics and suitable for USB peripheral interfaces, mobile power sequencing, industrial sensor hubs, and compact SSD controllers requiring stable component supply and long-term lifecycle assurance.
Supply support for 74LVC2G125RA3-7 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 computing, industrial, and consumer markets.
The 74LVC logic family targets low-voltage, mixed-signal interfacing with emphasis on wide supply range, robust ESD, and partial-power-down safety-designed specifically for portable and battery-operated equipment.
FAQ
Can 74LVC2G125RA3-7 operate with VCC = 1.65V while accepting 5V inputs?
Yes. The device is fully specified for 1.65V to 5.5V VCC operation, and all inputs tolerate up to 5.5V regardless of supply voltage. This enables direct interfacing between 5V sensors and 1.65V/1.8V processors without external level shifters, verified per DS37932 Section 7 (Recommended Operating Conditions) and Table 4 (Electrical Characteristics).
What is the maximum output current the 74LVC2G125RA3-7 can source/sink at 1.8V?
At VCC = 1.8V, the device guarantees ±4mA output drive (IOL/IOH) per output, as specified in Table 3 (Recommended Operating Conditions). This is sufficient for driving one standard CMOS load (20 pF + 100 kΩ) or short traces but insufficient for direct LED driving or heavy capacitive loads.
How does the IOFF feature behave when VCC is disconnected?
When VCC = 0V, the IOFF circuit disables both outputs (1Y and 2Y) into high-impedance state, limiting leakage current to ±20 μA maximum (per Table 4, IOFF parameter). This prevents back-current from externally driven inputs or outputs into the unpowered IC, satisfying JEDEC JESD78 requirements for partial power-down safety.
Is the X2-DFN1210-8 package compatible with standard reflow profiles?
Yes. The X2-DFN1210-8 package is qualified for IPC/JEDEC J-STD-020D reflow, with peak temperature ≤260°C. Its 0.3 mm lead pitch requires stencil aperture reduction (75% area ratio) and controlled placement accuracy (±0.05 mm), as documented in Diodes' package outline AP02007 and DFN assembly guidelines.
74LVC2G125RA3-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74LVC
- Package/Case:
- 8-XFDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 2
- 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-DFN1210-8
74LVC2G125RA3-7 FAQ
1.How can I place an order for 74LVC2G125RA3-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC2G125RA3-7 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 74LVC2G125RA3-7 reliable?
The price and inventory of 74LVC2G125RA3-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC2G125RA3-7 is usually 5 days.
3.What payment methods are accepted for 74LVC2G125RA3-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC2G125RA3-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC2G125RA3-7?
74LVC2G125RA3-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC2G125RA3-7 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 74LVC2G125RA3-7?
For technical support, including 74LVC2G125RA3-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC2G125RA3-7 requirements.
6.How does Aetrix verify that 74LVC2G125RA3-7 is sourced from the original manufacturer or authorized distributors?
All 74LVC2G125RA3-7 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 74LVC2G125RA3-7 meets industry standards.
7.What is the process for return or replacement of 74LVC2G125RA3-7?
All 74LVC2G125RA3-7 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC2G125RA3-7, 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 74LVC2G125RA3-7 part is unused and in its original packaging.
Return procedure for 74LVC2G125RA3-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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