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Texas Instruments SN74LVC1G240DBVR
- Part No.:
- SN74LVC1G240DBVR
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
SN74LVC1G240DBVR.pdf
- Description:
- IC BUFFER INVERT 5.5V SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:18,463
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Product details
Overview
SN74LVC1G240 from Texas Instruments is a single-channel inverting buffer/driver with 3-state output, designed for signal conditioning and bus isolation in low-voltage digital systems. It operates from 1.65V to 5.5V, delivers ±24mA drive at 3.3V, achieves 3.7ns max propagation delay, and supports 5.5V-tolerant inputs - enabling level translation in mixed-supply applications such as microcontroller I/O expansion.
For engineers reviewing the SN74LVC1G240 datasheet, SN74LVC1G240 pinout, SN74LVC1G240 application, or SN74LVC1G240 equivalent, key selection criteria include its 3-state control timing (enable/disable), Ioff partial-power-down capability, ultra-low ICC (≤10μA), NanoFree™ SOT-23 package footprint, and verified compatibility with 15pF/30pF load conditions across –40°C to 125°C.
Technical Context
The SN74LVC1G240 implements a CMOS-based inverting logic gate with active-low 3-state control: when OE is low, A is inverted and driven to Y; when OE is high, Y enters high-impedance state. Its balanced output stage provides symmetrical sourcing/sinking capability up to ±24mA at 3.3V, supporting clean signal redriving without external biasing.
Input structure includes over-voltage tolerant circuitry (5.5V max VI) and clamp diodes for ESD protection, while Ioff functionality ensures zero current flow during VCC = 0V - critical for hot-swap and partial-power-down systems. The device meets JESD78 Class II latch-up immunity (>100mA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65V to 5.5V - enables interoperability across 1.8V, 2.5V, 3.3V, and 5V logic domains |
| Max Propagation Delay | 3.7ns at 3.3V, CL = 15pF - supports >200MHz signal redriving in compact timing-critical paths |
| Output Drive | ±24mA at 3.3V - sufficient to drive multiple LVC loads or moderate capacitive traces without buffering |
| Ioff Current | ±10μA max - prevents back-drive and leakage during power sequencing or system sleep states |
| Input Voltage Tolerance | Up to 5.5V regardless of VCC - allows interfacing with higher-voltage controllers while powered from lower VCC |
| ICC (Quiescent) | 10μA max - supports always-on monitoring circuits with minimal battery drain |
| Operating Temp | –40°C to +125°C - qualified for automotive under-hood and industrial control environments |
Pinout & Package
SN74LVC1G240 DBVR uses the 5-pin SOT-23 (DBV) package, measuring 2.9mm × 2.8mm overall with a 2.9mm × 1.6mm body. This NanoFree™ package eliminates bond wires and die pad, reducing parasitic inductance and enabling direct die attach on PCBs for improved thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OE | Active-low 3-state enable input | Pulling high disables output (Y = Z); tie to VCC via pullup for power-up high-Z safety |
| 2 - A | Inverting data input | Accepts 0–5.5V signals; logic inversion occurs only when OE = low |
| 3 - GND | Ground reference | Return path for all currents; must be low-impedance to maintain VOL/VOH specs |
| 4 - Y | Inverted 3-state output | Drives inverted A when OE = low; floats to high-Z when OE = high |
| 5 - VCC | Positive supply | Supplies internal logic and output drivers; requires local 0.1μF bypass capacitor |
Key Features
| Feature | Design Value |
|---|---|
| 3-State Output Control | OE pin enables deterministic bus isolation - prevents contention during controller reset or multi-drop sharing |
| Ioff Partial-Power-Down | Blocks current flow between powered/unpowered sections - essential for live insertion and modular system design |
| 5.5V-Tolerant Inputs | Eliminates need for external level shifters when interfacing 5V sensors or legacy peripherals to 3.3V or 1.8V MCUs |
| NanoFree™ Packaging | SOT-23 footprint with chip-scale reliability - reduces board area by ~40% vs. standard SOIC and improves thermal resistance |
| Low Dynamic Power | Cpd = 18pF at 3.3V - minimizes switching noise and EMI in high-density routing near analog or RF sections |
Applications
| LED Indicator Driver | Digital Signal Redriver |
|---|---|
Use Scenario: Driving a status LED from a low-current GPIO pin of an ARM Cortex-M0+ MCU operating at 1.8V. IC Role / Device Role / Timing Role: Inverting buffer with 3-state control acts as current amplifier and polarity adjuster; OE tied low for continuous operation. Use Value: Delivers 24mA sink current at 1.8V - sufficient to illuminate high-brightness LEDs without external transistor, while maintaining <3.7ns edge fidelity. | Use Scenario: Reconditioning a degraded clock or data signal traversing a 10cm PCB trace with 25pF capacitance. IC Role / Device Role / Timing Role: Single-stage inverting redriver restores signal integrity; OE controlled by system supervisor to gate signal during initialization. Use Value: 3.7ns tpd and ±24mA drive ensure <10% rise/fall time degradation at 100MHz, meeting setup/hold margins for downstream FPGA inputs. |
| Transmission Line Driver | Controller Reset Hold Circuit |
Use Scenario: Driving a 50Ω coaxial cable carrying UART data between two isolated subsystems. IC Role / Device Role / Timing Role: Impedance-matched driver with source termination support; output configured as push-pull inverter with series resistor. Use Value: Balanced ±24mA output stage minimizes reflections; 5.5V-tolerant inputs accept 3.3V logic while VCC = 2.5V for voltage domain bridging. | Use Scenario: Holding a peripheral's enable line low during microcontroller reset to prevent spurious activation. IC Role / Device Role / Timing Role: Inverting buffer with OE tied to reset signal - asserts active-low enable only after reset deassertion. Use Value: Guaranteed high-Z during power-up (via OE pullup) prevents glitch on enable line; 10μA ICC avoids loading reset supervisor output. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar inverting buffer with 3-state output applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74LVC1G04GW,125 (Nexperia) | No 3-state output; fixed inverter only - lacks OE control and high-Z mode | Cannot isolate buses or share lines; limited to point-to-point signal inversion | Select only if 3-state functionality is unnecessary and board space allows SOT353 package |
| SN74AUP1G240DBVR (TI) | Lower ICC (500nA), slower tpd (6.1ns @ 3.3V), same pinout and function | Better for ultra-low-power battery systems where speed <100MHz is acceptable | Drop-in replacement for power-constrained designs; retains identical OE/A/Y/GND/VCC mapping |
Compared with SN74LVC1G240, the SN74AUP1G240DBVR trades 3.7ns speed for 20× lower quiescent current, while the 74LVC1G04GW,125 omits 3-state entirely - making SN74LVC1G240 the only choice when bus contention avoidance or dynamic signal gating is required.
Availability
SN74LVC1G240 is available at Aetrix Electronics and suitable for industrial automation interfaces, automotive body control modules, and portable medical device I/O expansion requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for SN74LVC1G240 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 logic solutions, with over 90 years of innovation in power management, signal chain, and interface technologies.
The SN74LVC1G240 belongs to TI's LVC (Low-Voltage CMOS) logic family, engineered for robust voltage translation, low-noise operation, and seamless integration into mixed-voltage digital systems from consumer IoT to automotive ECUs.
FAQ
What is the maximum capacitive load SN74LVC1G240 can drive while maintaining specified timing?
The SN74LVC1G240 is characterized for CL = 15pF and CL = 30pF/50pF loads. At 3.3V, it maintains ≤3.7ns tpd up to 15pF and ≤4.5ns up to 50pF. For loads >50pF, add a series damping resistor (e.g., 22Ω–33Ω) near the output to limit peak current and suppress ringing - verified in TI's layout guidelines for transmission line driving.
Does SN74LVC1G240 support hot-swap or live insertion?
Yes. SN74LVC1G240 incorporates Ioff circuitry that disables all outputs when VCC = 0V, limiting Ioff to ±10μA. This prevents back-driving powered circuitry during card insertion/removal and satisfies JEDEC JESD78 Class II latch-up immunity (>100mA), making it suitable for modular backplane and docking station designs.
Can SN74LVC1G240 interface a 5V sensor output to a 1.8V microcontroller input?
Yes. SN74LVC1G240 accepts input voltages up to 5.5V independent of VCC. When powered at 1.8V, it safely translates 5V sensor signals to 1.8V-compatible logic levels at its output Y (inverted), eliminating external level shifters - confirmed by VIH/VIL specs and over-voltage tolerant input structure.
What is the recommended pullup resistor value for OE to ensure reliable high-impedance during power-up?
Texas Instruments recommends tying OE to VCC through a pullup resistor to guarantee high-Z at power-on. The minimum value depends on the driver's sink capability; for typical MCU GPIOs (±20mA), a 10kΩ resistor is optimal - providing sufficient noise margin while limiting current to <0.5mA at 5V, per TI application note SCBA059.
How does the NanoFree™ DBV package of SN74LVC1G240 improve thermal performance versus standard SOT-23?
The NanoFree™ DBV package used in SN74LVC1G240 replaces wire bonding with copper pillar interconnects and direct die attach, reducing RθJA to 357.1°C/W (vs. ~400°C/W for legacy SOT-23). This lowers junction temperature rise by ~15% under 24mA continuous drive - critical for sustained operation in enclosed industrial enclosures.
SN74LVC1G240DBVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, 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:
- SOT-23-5
SN74LVC1G240DBVR FAQ
1.How can I place an order for SN74LVC1G240DBVR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC1G240DBVR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
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The price and inventory of SN74LVC1G240DBVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC1G240DBVR is usually 5 days.
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For technical support, including SN74LVC1G240DBVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC1G240DBVR requirements.
6.How does Aetrix verify that SN74LVC1G240DBVR is sourced from the original manufacturer or authorized distributors?
All SN74LVC1G240DBVR 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 SN74LVC1G240DBVR meets industry standards.
7.What is the process for return or replacement of SN74LVC1G240DBVR?
All SN74LVC1G240DBVR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC1G240DBVR, 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 SN74LVC1G240DBVR part is unused and in its original packaging.
Return procedure for SN74LVC1G240DBVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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