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NXP Semiconductors 74LVC2G38GD,125
- Part No.:
- 74LVC2G38GD,125
- Manufacturer:
- NXP Semiconductors
- Category:
- Gates and Inverters
- Package:
- 8-XFDFN
- Datasheet:
-
74LVC2G38GD,125.pdf
- Description:
- IC GATE NAND 2CH 2-INP 8XSON
- Quantity:
- Payment:
- Shipping:
Inventory:30,000
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Product details
Overview
74LVC2G38GD,125 from Nexperia is a dual 2-input NAND gate with open-drain outputs, designed for level translation between 3.3 V and 5 V logic domains. It features Schmitt-trigger inputs for noise immunity, IOFF partial power-down protection, and operates across 1.65 V to 5.5 V supply range. Used in I²C bus pull-up interfaces, GPIO expansion logic, and mixed-voltage signal conditioning.
For engineers reviewing the 74LVC2G38GD,125 datasheet, 74LVC2G38GD,125 pinout, 74LVC2G38GD,125 application, or 74LVC2G38GD,125 equivalent, key selection criteria include open-drain drive strength (±24 mA at 3.0 V), input overvoltage tolerance (up to 5.5 V), IOFF-enabled hot-swap capability, and -40 °C to +125 °C operation in XSON8 (SOT833-1) package.
Technical Context
This device implements two independent NAND gates with open-drain outputs, enabling wired-AND configurations and bidirectional level shifting. Each gate accepts inputs tolerant up to 5.5 V regardless of VCC, supporting interoperability between 3.3 V and 5 V systems without external resistors or translators.
Schmitt-trigger inputs provide hysteresis (typ. 0.3 V at 3.3 V), improving noise rejection on slow-rising signals. The IOFF circuit actively disables outputs during power-down, blocking backflow current when VCC = 0 V - critical for live-insertion and partial-power-down architectures.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65 V to 5.5 V - enables single-supply operation across LVC logic families and compatibility with both 1.8 V, 2.5 V, 3.3 V, and 5 V systems. |
| Input Voltage Tolerance | Up to 5.5 V - allows direct connection to 5 V TTL/CMOS outputs without clamping diodes or level shifters. |
| Output Drive (VCC = 3.0 V) | ±24 mA - supports driving standard I²C bus capacitance (400 pF) with fast rise/fall times under heavy load. |
| Propagation Delay (VCC = 3.3 V) | 0.7–4.1 ns - ensures sub-5 ns timing for high-speed control logic in FPGA/CPU peripheral interfacing. |
| IOFF Leakage (VCC = 0 V) | ±2 μA - limits backfeed current during system sleep states, preserving battery life and preventing unintended activation. |
| Operating Temperature | -40 °C to +125 °C - qualified for industrial and automotive under-hood applications requiring extended thermal stability. |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - meets JEDEC JS-001/JS-002 Class 2/C3 for robust handling in automated assembly and field deployment. |
Pinout & Package
XSON8 (SOT833-1) package: plastic extremely thin small outline, no leads, 8 terminals, body size 1.0 mm × 1.95 mm × 0.5 mm, thermal pad optional, pin 1 indicator in lower-left corner below marking code Y38.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A, 2A | Data Input A (Gate 1 & 2) | Primary NAND input; Schmitt-triggered, 5.5 V tolerant, supports slow-edge signals without oscillation. |
| 1B, 2B | Data Input B (Gate 1 & 2) | Secondary NAND input; identical electrical behavior to 1A/2A; enables dual independent 2-input logic functions. |
| 1Y, 2Y | Open-Drain Output (Gate 1 & 2) | Active-low output requiring external pull-up; enables wired-AND, I²C bus arbitration, and mixed-voltage signaling. |
| GND | Ground Reference | 0 V reference for all internal circuitry and ESD protection paths; must be low-impedance for noise immunity. |
| VCC | Supply Voltage | Core logic supply (1.65–5.5 V); powers IOFF circuitry and defines logic thresholds; decoupling capacitor required near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent NAND gates | Two fully isolated logic cells sharing only VCC/GND - enables compact implementation of enable/control logic pairs. |
| Open-drain outputs with ±24 mA drive | Supports active pull-down into 3.3 V or 5 V buses; eliminates need for discrete MOSFETs in level-shifted interrupt lines. |
| IOFF partial power-down mode | Outputs go high-impedance when VCC = 0 V - prevents back-current flow during hot-swap or multi-rail sequencing. |
| Schmitt-trigger inputs | Input hysteresis ≥ 0.3 V at 3.3 V - rejects noise on long traces or unfiltered sensor inputs without external RC filtering. |
| JEDEC-compliant voltage standards | Validated per JESD8-7, JESD8-5, JESD8C, JESD36 - guarantees interoperability across legacy and modern logic families. |
Applications
| Industrial Sensor Interface | I²C Bus Expansion |
|---|---|
Use Scenario: Connecting 5 V analog sensor outputs to a 3.3 V microcontroller ADC monitoring circuit with shared interrupt line. IC Role / Device Role: Level-translating NAND gate enabling 5 V sensor alert signal to safely assert 3.3 V MCU interrupt pin via open-drain wired-AND. Use Value: Eliminates external level shifter IC while maintaining noise-immune edge detection through Schmitt-trigger inputs. |
Use Scenario: Adding secondary I²C slave address space using GPIO-controlled address selection on an embedded controller. IC Role / Device Role: Dual NAND gate generating dynamic slave address bits based on two MCU GPIOs, driving open-drain address lines. Use Value: Enables software-configurable I²C addressing without dedicated address pins or EEPROM-based configuration. |
| Hot-Swappable Module Control | Legacy System Logic Glue |
Use Scenario: Power management logic for PCIe add-in cards where VCC may be sequenced independently of main system rails. IC Role / Device Role: Gate controlling module reset assertion; IOFF blocks backfeed when card is partially powered during insertion/removal. Use Value: Prevents damage to host motherboard during live insertion by isolating unpowered logic sections. |
Use Scenario: Interfacing 5 V legacy parallel port peripherals to modern 3.3 V SoC-based controllers in test equipment. IC Role / Device Role: Open-drain NAND translating handshaking signals (STB, ACK) between voltage domains with precise timing control. Use Value: Maintains sub-5 ns propagation delay across voltage boundaries, preserving setup/hold timing margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual open-drain NAND gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC2G38DCUR | VSSOP8 (SOT765-1) package; 2.3 mm body width; identical electrical specs but larger footprint and higher thermal resistance. | Better suited for manual prototyping or boards with less stringent space constraints; lacks XSON8's thermal performance. | Select when board layout requires leaded package for reworkability or thermal mass is not limiting. |
| 74LVC2G38GX | X2SON8 (SOT1233-2) package; 1.35 mm × 0.8 mm × 0.32 mm; 300 mW max power dissipation vs. 250 mW for SOT833-1. | Superior thermal performance for high-duty-cycle open-drain switching; optimized for dense power-sensitive designs. | Select when operating near maximum output current or ambient temperature exceeds 105 °C. |
Compared with SN74LVC2G38DCUR and 74LVC2G38GX, the 74LVC2G38GD,125 offers the smallest XSON8 footprint (1.0 × 1.95 mm) with balanced thermal and electrical performance - ideal for space-constrained industrial modules requiring full -40 °C to +125 °C operation.
Availability
74LVC2G38GD,125 is available at Aetrix Electronics and suitable for industrial sensor interfaces, I²C bus expansion, hot-swappable module control, and legacy system logic glue requiring stable component supply across extended temperature ranges.
Supply support for 74LVC2G38GD,125 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
Nexperia is a leading semiconductor manufacturer specializing in high-performance logic, analog, and discrete components, with global R&D and manufacturing facilities focused on reliability and energy efficiency.
The 74LVC2G38 belongs to Nexperia's LVC logic family - engineered for low-voltage operation, mixed-signal interoperability, and robustness in industrial and automotive-adjacent applications.
FAQ
Can 74LVC2G38GD,125 drive a 400 pF I²C bus directly?
Yes. With ±24 mA output drive at 3.0 V and typical VOL < 0.55 V at 24 mA, it meets I²C Fast-mode (400 kbit/s) requirements when paired with standard 2.2 kΩ pull-ups. Propagation delay remains under 4.1 ns, preserving timing margins even with 400 pF bus capacitance.
Does the IOFF feature work when VCC is disconnected but inputs remain at 5 V?
Yes. IOFF activates when VCC = 0 V, disabling output FETs regardless of input voltage. Inputs remain overvoltage-tolerant to 5.5 V, and output leakage is limited to ±2 μA - preventing backfeed into unpowered rails during hot-swap events.
What is the minimum recommended pull-up resistor for 1Y/2Y in 5 V systems?
For reliable LOW-level assertion at 5 V, use ≤ 10 kΩ pull-up. At 24 mA sink current and VOL ≤ 0.55 V (VCC = 3.0 V), worst-case voltage drop across 10 kΩ is 0.55 V, ensuring valid LOW at 5 V logic threshold. Lower values improve rise time but increase static power.
Is 74LVC2G38GD,125 qualified for automotive applications?
No. While rated for -40 °C to +125 °C, it is not AEC-Q200 qualified or automotive-graded. Nexperia explicitly states non-automotive qualification in its legal disclaimers; use only in industrial, computing, or consumer systems unless separately validated.
74LVC2G38GD,125 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- 74LVC
- Package/Case:
- 8-XFDFN
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- NAND Gate
- Number of Circuits:
- 2
- Number of Inputs:
- 2
- Features:
- Open Drain
- Voltage - Supply:
- 1.65V ~ 5.5V
- Current - Quiescent (Max):
- 4 µA
- Current - Output High, Low:
- 32mA
- Input Logic Level - Low:
- 0.7V ~ 0.8V
- Input Logic Level - High:
- 1.7V ~ 2V
- Max Propagation Delay @ V, Max CL:
- 4.2ns @ 5V, 50pF
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-XSON (2x3)
74LVC2G38GD,125 FAQ
1.How can I place an order for 74LVC2G38GD,125 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC2G38GD,125 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 74LVC2G38GD,125 reliable?
The price and inventory of 74LVC2G38GD,125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC2G38GD,125 is usually 5 days.
3.What payment methods are accepted for 74LVC2G38GD,125?
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74LVC2G38GD,125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC2G38GD,125 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 74LVC2G38GD,125?
For technical support, including 74LVC2G38GD,125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC2G38GD,125 requirements.
6.How does Aetrix verify that 74LVC2G38GD,125 is sourced from the original manufacturer or authorized distributors?
All 74LVC2G38GD,125 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 74LVC2G38GD,125 meets industry standards.
7.What is the process for return or replacement of 74LVC2G38GD,125?
All 74LVC2G38GD,125 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC2G38GD,125, 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 74LVC2G38GD,125 part is unused and in its original packaging.
Return procedure for 74LVC2G38GD,125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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