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Texas Instruments 74LVC2G240DCURG4
- Part No.:
- 74LVC2G240DCURG4
- Manufacturer:
- Texas Instruments
- Package:
- 8-VFSOP (0.091", 2.30mm Width)
- Datasheet:
-
74LVC2G240DCURG4.pdf
- Description:
- IC BUFFER INVERT 5.5V 8VSSOP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
74LVC2G240DCURG4 from Texas Instruments is a dual noninverting buffer/driver with 3-state outputs, designed for 1.65-V to 5.5-V VCC operation. It features ±24-mA output drive at 3.3 V, 4.6 ns max propagation delay at 3.3 V, and Ioff support for live insertion and partial-power-down applications. It serves as a bus-oriented receiver/transmitter in low-voltage embedded control and memory address buffering.
For engineers reviewing the 74LVC2G240DCURG4 datasheet, 74LVC2G240DCURG4 pinout, 74LVC2G240DCURG4 application, or 74LVC2G240DCURG4 equivalent, key selection criteria include 3-state output timing (ten/tdis), voltage translation capability (inputs accept up to 5.5 V while operating at 1.65–5.5 V VCC), and NanoFree™ package compatibility with high-density PCB layouts.
Technical Context
This device implements two independent 1-bit noninverting buffers, each with dedicated output-enable (OE) control. Each buffer passes A→Y when OE is low; outputs enter high-impedance state when OE is high. The Ioff circuitry actively disables outputs during power-down, preventing back-drive current and enabling hot-swap capability.
Input thresholds are VIL ≤ 0.3×VCC and VIH ≥ 0.7×VCC across 1.65–5.5 V supply range. Output drive strength scales with VCC: ±24 mA at 3.3 V, ±32 mA at 4.5 V. Ground bounce (VOLP) and undershoot (VOHV) are characterized at 3.3 V, confirming signal integrity in fast-switching digital interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 5.5 V - Enables interoperability across mixed-voltage systems (e.g., 1.8 V logic driving 3.3 V buses). |
| Max tpd | 4.6 ns at 3.3 V - Supports >200 MHz data rates in buffered clock or address paths with tight timing budgets. |
| Output Drive | ±24 mA at 3.3 V - Drives 50-Ω transmission lines or multiple CMOS loads without external buffering. |
| Ioff Current | ±10 µA max at 125°C - Ensures safe live insertion and prevents back-current damage during partial power-down. |
| Input Voltage Range | –0.5 V to 5.5 V - Allows down-translation: 5.5 V inputs safely interface to lower VCC rails (e.g., 2.5 V or 1.8 V). |
| ESD Rating | 2000-V HBM, 1000-V CDM - Meets industrial-grade robustness requirements for board-level handling and operation. |
| Operating Temp | –40°C to +125°C - Qualified for automotive under-hood, industrial motor control, and extended-temperature embedded systems. |
Pinout & Package
VSSOP-8 (DCU) package: 2.3 mm × 2.0 mm body, 0.5-mm lead pitch, 0.9-mm max height, exposed pad not present, RoHS-compliant NiPdAu finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | 1OE | Active-low enable for Buffer 1 - Pull high via resistor to ensure high-Z during power-up; ties directly to control logic for dynamic bus gating. |
| 2 | 1A | Input for Buffer 1 - Accepts 0–5.5 V signals regardless of VCC; enables level-shifting from higher-voltage domains. |
| 3 | 2Y | Output for Buffer 2 - 3-state capable; sinks/sourses ±24 mA at 3.3 V; requires no external pull-up for open-bus operation. |
| 4 | GND | Digital ground reference - Shared return path for both buffers; must be low-inductance connection to minimize switching noise coupling. |
| 5 | 2A | Input for Buffer 2 - Independent of Buffer 1; supports dual-channel isolation in address/data multiplexing or redundant signal paths. |
| 6 | 1Y | Output for Buffer 1 - Noninverting output; matches input timing within 4.6 ns (3.3 V); used for fanout expansion or bus isolation. |
| 7 | 2OE | Active-low enable for Buffer 2 - Enables independent control of each buffer's output state; critical for time-multiplexed bus arbitration. |
| 8 | VCC | Supply voltage - Powers both buffers and OE logic; bypass capacitor (0.1 µF) required within 3 mm of pin for stable high-speed switching. |
Key Features
| Feature | Design Value |
|---|---|
| NanoFree™ packaging | Dies-as-package reduces footprint to 2.3 mm × 2.0 mm - eliminates wirebond and mold compound, enabling ultra-thin (<0.9 mm) and high-density routing. |
| Live-insertion support | Ioff limits leakage to ±10 µA at 125°C - permits safe hot-plug into powered backplanes or modular subsystems without system reset. |
| Voltage translation | Inputs tolerate 5.5 V while VCC = 1.65–5.5 V - eliminates discrete level-shifters when interfacing legacy 5-V peripherals to modern low-voltage MCUs. |
| Low ground bounce | VOLP < 0.8 V at 3.3 V - maintains signal integrity in multi-buffered systems by minimizing simultaneous switching output (SSO) noise. |
| High-speed timing | tdis = 5.5 ns max at 3.3 V - ensures rapid bus release for time-critical protocols like SPI slave select or memory chip-enable deassertion. |
Applications
| Memory Address Buffering | Industrial Bus Interface |
|---|---|
|
Use Scenario: Driving address lines from an MCU to multiple SRAM or Flash devices on a shared bus. IC Role / Device Role / Timing Role: Dual buffer isolates MCU outputs and fans out to parallel memory chips; 3-state enables bus sharing among multiple peripherals. Use Value: 4.6 ns propagation delay ensures setup/hold timing margins are preserved across temperature; ±24-mA drive sustains signal integrity over 10-cm traces. |
Use Scenario: Interfacing a 3.3-V PLC controller CPU to legacy 5-V fieldbus transceivers (e.g., RS-485 drivers). IC Role / Device Role / Timing Role: Down-translates 3.3-V control signals (DE/RE) to 5-V logic levels while maintaining noise immunity and timing precision. Use Value: Input tolerance up to 5.5 V allows direct connection to 5-V transceiver control pins without external resistors or level shifters. |
| Hot-Swappable Module Control | Low-Power Sensor Hub Interface |
|
Use Scenario: Enabling/disabling power delivery and communication lines to removable sensor modules in a medical diagnostic platform. IC Role / Device Role / Timing Role: Buffers isolate host processor from module-side circuits; Ioff blocks back-current during module insertion/removal. Use Value: ±10 µA Ioff at 125°C guarantees zero disruptive current flow into powered host logic, meeting IEC 60601-1 safety requirements. |
Use Scenario: Aggregating digital outputs from multiple ultra-low-power environmental sensors (e.g., I²C GPIO expanders) to a central microcontroller. IC Role / Device Role / Timing Role: Provides clean, slew-controlled signal buffering between heterogeneous sensor nodes and host; low ICC (10 µA max) preserves battery life. Use Value: 10-µA max ICC at 125°C minimizes quiescent drain in always-on sensor hubs; 1.65-V minimum VCC supports energy harvesting power sources. |
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 |
|---|---|---|---|
| SN74LVC2G240DCUR | No G4 suffix; identical DCU package, same electrical specs, RoHS-compliant NiPdAu finish but unspecified reflow profile variant. | Same functional behavior and pinout; differs only in tape-and-reel packaging marking (C40R vs C40J/C40Q). | Select 74LVC2G240DCURG4 for guaranteed MSL Level-1-260°C-UNLIM compliance and TI's standard production traceability. |
| SN74LVC1G125DBVR | Single-channel, SOT-23-5 package; lacks second buffer and independent 2OE; 5.5 ns tpd at 3.3 V. | Requires two units for dual-channel use; occupies more PCB area; no 2A/2Y pin pairing for compact dual-path routing. | Choose 74LVC2G240DCURG4 when space-constrained designs demand dual independent buffers in one 2.3×2.0 mm footprint. |
Compared with SN74LVC2G240DCUR, the 74LVC2G240DCURG4 offers assured reflow compatibility and full lifecycle documentation; versus SN74LVC1G125DBVR, it delivers 50% smaller area per channel and native dual-control architecture for synchronized bus management.
Availability
74LVC2G240DCURG4 is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and portable medical instrumentation requiring stable component supply and long-term manufacturability.
Supply support for 74LVC2G240DCURG4 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
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies, with decades of experience in high-reliability logic and interface solutions.
The SN74LVC2G240 product line targets space-constrained, mixed-voltage digital systems-designed specifically to improve density and performance in memory address drivers, clock distribution networks, and bus-oriented receivers/transmitters.
FAQ
What is the maximum input voltage rating for 74LVC2G240DCURG4?
The 74LVC2G240DCURG4 accepts input voltages from –0.5 V to 5.5 V, independent of VCC level. This allows it to function as a down-translator-for example, interfacing 5-V sensors or legacy peripherals to a 1.8-V or 2.5-V microcontroller without external level-shifting circuitry. The absolute maximum rating is strictly limited to 5.5 V; exceeding this risks permanent damage.
Does 74LVC2G240DCURG4 support hot-swap or live-insertion applications?
Yes, 74LVC2G240DCURG4 supports live insertion via its Ioff feature, which disables outputs and limits leakage to ±10 µA at 125°C when VCC = 0 V. This prevents damaging back-current flow during module insertion into a powered backplane. To implement safely, tie OE pins to VCC through a pullup resistor and ensure GND connections mate before VCC during mating sequences.
What is the recommended power supply decoupling for 74LVC2G240DCURG4?
A 0.1-µF ceramic capacitor placed within 3 mm of the VCC pin (Pin 8) and GND pin (Pin 4) is mandatory for stable high-speed operation. For systems with multiple 74LVC2G240DCURG4 devices or heavy switching loads, add a 4.7-µF bulk capacitor nearby. Avoid shared vias between VCC and GND traces to minimize impedance and suppress ground bounce (VOLP < 0.8 V is verified at 3.3 V).
Can 74LVC2G240DCURG4 operate at 1.65 V VCC while driving 24-mA loads?
No. The ±24-mA output drive specification applies only at VCC = 3.3 V. At 1.65 V, the device meets ±4 mA (IOL/IOH) per output per datasheet Electrical Characteristics table. Attempting 24-mA loads at 1.65 V will cause excessive VOL/VOH deviation and potential timing violations. Use 3.3 V or 5 V VCC for full drive strength.
Is the pinout of 74LVC2G240DCURG4 compatible with other SN74LVC2Gxxx dual-buffer variants?
Yes-the 74LVC2G240DCURG4 shares identical pinout (VSSOP-8, DCU) and logic function with SN74LVC2G125 (dual noninverting buffer, active-high OE) and SN74LVC2G126 (dual noninverting buffer, active-high OE), differing only in OE polarity. However, it is not pin-compatible with SN74LVC2G241 (inverting) or SN74LVC2G34 (noninverting, no 3-state). Always verify OE polarity and truth table before substitution.
74LVC2G240DCURG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 8-VFSOP (0.091", 2.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Logic Type:
- Buffer, 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:
- 8-VSSOP
74LVC2G240DCURG4 FAQ
1.How can I place an order for 74LVC2G240DCURG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVC2G240DCURG4 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 74LVC2G240DCURG4 reliable?
The price and inventory of 74LVC2G240DCURG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVC2G240DCURG4 is usually 5 days.
3.What payment methods are accepted for 74LVC2G240DCURG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVC2G240DCURG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVC2G240DCURG4?
74LVC2G240DCURG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVC2G240DCURG4 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 74LVC2G240DCURG4?
For technical support, including 74LVC2G240DCURG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVC2G240DCURG4 requirements.
6.How does Aetrix verify that 74LVC2G240DCURG4 is sourced from the original manufacturer or authorized distributors?
All 74LVC2G240DCURG4 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 74LVC2G240DCURG4 meets industry standards.
7.What is the process for return or replacement of 74LVC2G240DCURG4?
All 74LVC2G240DCURG4 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVC2G240DCURG4, 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 74LVC2G240DCURG4 part is unused and in its original packaging.
Return procedure for 74LVC2G240DCURG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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