My Inquiry
My Account
Texas Instruments SN74LVC1G240DBVT
- Part No.:
- SN74LVC1G240DBVT
- Manufacturer:
- Texas Instruments
- Package:
- SC-74A, SOT-753
- Datasheet:
-
SN74LVC1G240DBVT.pdf
- Description:
- IC BUFFER INVERT 5.5V SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:6,597
Please send an inquiry. Send us your inquiry, and we will respond immediately.
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 use in mixed-voltage interfaces such as microcontroller GPIO expansion or LED driver control.
For engineers reviewing the SN74LVC1G240 datasheet, SN74LVC1G240 pinout, SN74LVC1G240 application, or SN74LVC1G240 equivalent, key selection criteria include 3-state enable timing (tdis/ten), Ioff-enabled live insertion capability, overvoltage-tolerant inputs, and NanoFree™ SOT-23 package compatibility with high-density PCB layouts.
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 mode. Its balanced output stage provides symmetrical sourcing/sinking capability up to ±24mA at 3.3V, supporting clean signal redriving across transmission lines or capacitive loads ≤50pF.
It features Ioff circuitry that disables all outputs during partial power-down (VCC = 0V), preventing back-drive current and enabling hot-plug operation. Input voltage tolerance up to 5.5V - independent of VCC - allows interfacing with higher-voltage controllers while powered from 1.8V or 3.3V rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65V to 5.5V - enables direct interface with 1.8V, 2.5V, 3.3V, and 5V logic families without level shifters |
| tpd (max) | 3.7ns at 3.3V, CL = 15pF - ensures sub-4ns signal propagation for high-speed data redriving |
| Output Drive | ±24mA at 3.3V - sufficient to directly drive LEDs, small FET gates, or terminate short transmission lines |
| Ioff Leakage | ±10μA at 5.5V - guarantees safe live insertion and prevents back-current flow during system power sequencing |
| Input Voltage Tolerance | Up to 5.5V regardless of VCC - permits connection to 5V controllers while operating from 1.8V supply |
| ICC (max) | 10μA - ultra-low static power ideal for battery-powered or always-on monitoring circuits |
| ESD Rating (HBM) | ±2000V - meets industrial-grade ESD robustness requirements per JS-001 |
Pinout & Package
SN74LVC1G240DBVT uses the DBV (SOT-23-5) package: 2.9mm × 2.8mm footprint, 5-pin surface-mount, lead-free and RoHS-compliant. The NanoFree™ packaging integrates die directly into the solderable pad structure, eliminating bond wires and reducing parasitic inductance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OE | Active-low 3-state enable input | Drives Y to high-impedance when high; ties to VCC via pullup resistor for power-up safety |
| 2 - A | Inverting data input | Accepts 0–5.5V logic levels; CMOS-compatible with fast transition requirement (≤10 ns/V at 3.3V) |
| 3 - GND | Ground reference | Return path for all output currents and supply leakage; requires low-impedance PCB plane connection |
| 4 - Y | Inverted, 3-state output | Provides true inversion of A when OE is low; floats to high-Z when OE is high - enables bus sharing |
| 5 - VCC | Positive supply | Supplies internal logic and output drivers; requires local 0.1μF ceramic bypass capacitor |
Key Features
| Feature | Design Value |
|---|---|
| 5.5V-tolerant inputs | Enables direct connection to legacy 5V controllers without external level-shifting components |
| Ioff partial-power-down protection | Prevents back-driving and latch-up during board hot-swap or asymmetric power sequencing |
| NanoFree™ SOT-23-5 package | Reduces board area by >30% vs. standard SOT-23; eliminates bond wire inductance for cleaner edge integrity |
| Balanced ±24mA output drive | Supports bidirectional signal integrity on stubbed buses and minimizes ground bounce in shared return paths |
| Low ICC (10μA max) | Extends battery life in portable sensors and reduces thermal load in dense FPGA I/O banks |
Applications
| LED Indicator Control | Digital Signal Redriving |
|---|---|
Use Scenario: Driving discrete status LEDs from low-current MCU GPIO pins. IC Role / Device Role / Timing Role: Inverting buffer with 3-state output acts as current-boosting interface between 2mA-capable MCU pin and 10–20mA LED load. Use Value: Eliminates need for discrete transistor stage; ±24mA drive ensures full brightness at 3.3V while maintaining logic-level compatibility. |
Use Scenario: Restoring signal integrity on long or branched PCB traces carrying clock or data signals. IC Role / Device Role / Timing Role: Single inverter reconditions degraded edges and provides impedance-matched output drive to reload fanout. Use Value: 3.7ns tpd and low Cpd (18pF) preserve timing margins; 3-state allows dynamic bus disabling during idle periods. |
| Transmission Line Termination | Controller Reset Hold |
Use Scenario: Driving short (<12cm), unterminated microstrip traces connecting FPGA to ADC or sensor. IC Role / Device Role / Timing Role: Active buffer isolates source from trace capacitance and provides controlled edge rate via CMOS drive strength. Use Value: Balanced ±24mA output mitigates ground bounce; 5.5V-tolerant inputs accept 5V test equipment signals during bring-up. |
Use Scenario: Holding peripheral reset line in active state during microcontroller boot sequence. IC Role / Device Role / Timing Role: Inverter with OE tied to controller's ready signal holds reset low until firmware initialization completes. Use Value: 3-state output releases reset line cleanly after boot; Ioff prevents current leakage when host is unpowered. |
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 bus-sharing capability | Suitable only for permanent signal inversion; cannot support shared-bus or dynamic disable use cases | Select only if 3-state functionality is unnecessary and board space allows SOT-353 (2.1×1.25mm) vs. DBV (2.9×2.8mm) |
| NC7SZ240P5X (ON Semiconductor) |
Same function and pinout; slightly higher tpd (4.5ns max at 3.3V) and lower drive (±16mA at 3.3V) | Acceptable for lower-speed or lower-current applications; not recommended for 24mA LED or transmission-line loads | Valid drop-in alternative where timing margin ≥0.8ns and drive margin ≥8mA are acceptable |
Compared with SN74LVC1G240, the Nexperia 74LVC1G04GW omits 3-state control entirely - limiting use to static inversion - while the ON Semiconductor NC7SZ240P5X matches pinout and function but trades 0.8ns speed and 8mA drive for broader temperature range (−40°C to +125°C vs. TI's −40°C to +125°C same spec).
Availability
SN74LVC1G240 is available at Aetrix Electronics and suitable for LED indicator control, digital signal redriving, and transmission line termination requiring stable component supply, consistent parametric performance across voltage/temperature, and long-term industrial lifecycle support.
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 decades of expertise in high-reliability, low-power logic families.
The SN74LVC1G240 belongs to TI's LVC (Low-Voltage CMOS) logic series - engineered for interoperability across 1.65V–5.5V supply domains, optimized for signal integrity in space-constrained portable and industrial systems.
FAQ
What is the maximum operating temperature for SN74LVC1G240?
The SN74LVC1G240 is rated for continuous operation from –40°C to +125°C ambient temperature. This extended range is validated across all electrical specifications including tpd, VOH/VOL, and Ioff, making SN74LVC1G240 suitable for under-hood automotive modules, industrial motor drives, and outdoor IoT edge nodes where thermal cycling is expected.
Can SN74LVC1G240 drive a 5V logic input while powered from 3.3V?
Yes - SN74LVC1G240 supports 5.5V-tolerant inputs, meaning its A and OE pins accept voltages up to 5.5V regardless of VCC. When powered from 3.3V, SN74LVC1G240 can safely receive 5V control signals or data, but its output Y will swing only from 0V to 3.3V (VOH ≈ 3.2V at –24mA). For 5V output, a level shifter is required.
How should the OE pin be handled during power-up to ensure safe default state?
To guarantee Y remains in high-impedance during power-up, tie OE to VCC through a pullup resistor. TI specifies minimum resistance based on driver sink capability; a 10kΩ resistor is standard and ensures OE stays high until firmware asserts it low. Leaving OE floating risks undefined output states and potential bus contention.
Does SN74LVC1G240 support live insertion in backplane applications?
Yes - SN74LVC1G240 includes Ioff circuitry that disables all outputs when VCC = 0V, limiting Ioff leakage to ±10μA even with 5.5V applied to A or Y. This prevents back-driving powered slots and satisfies JEDEC JESD78 Class II latch-up immunity (>100mA), making SN74LVC1G240 appropriate for hot-pluggable modules in telecom and server backplanes.
What is the recommended bypass capacitor for SN74LVC1G240DBVT?
A 0.1μF X7R ceramic capacitor placed as close as possible between VCC and GND pins is mandatory for SN74LVC1G240DBVT. TI's layout guidelines specify <2mm trace length, wide copper pours, and shared ground plane beneath the capacitor to minimize inductance. For noise-sensitive systems, add a parallel 1μF capacitor to suppress lower-frequency ripple.
SN74LVC1G240DBVT 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
SN74LVC1G240DBVT FAQ
1.How can I place an order for SN74LVC1G240DBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC1G240DBVT 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 SN74LVC1G240DBVT reliable?
The price and inventory of SN74LVC1G240DBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC1G240DBVT is usually 5 days.
3.What payment methods are accepted for SN74LVC1G240DBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC1G240DBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC1G240DBVT?
SN74LVC1G240DBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC1G240DBVT 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 SN74LVC1G240DBVT?
For technical support, including SN74LVC1G240DBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC1G240DBVT requirements.
6.How does Aetrix verify that SN74LVC1G240DBVT is sourced from the original manufacturer or authorized distributors?
All SN74LVC1G240DBVT 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 SN74LVC1G240DBVT meets industry standards.
7.What is the process for return or replacement of SN74LVC1G240DBVT?
All SN74LVC1G240DBVT units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC1G240DBVT, 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 SN74LVC1G240DBVT part is unused and in its original packaging.
Return procedure for SN74LVC1G240DBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN74LVC1G240DBVT Tags
-
SN74LVC1G17DBVR
Texas Instruments
-
SN74LVC1G07DCKR
Texas Instruments
-
SN74LVC1G17DCKR
Texas Instruments
-
SN74LVC1G07DBVR
Texas Instruments
-
SN74LVC1G125DCKR
Texas Instruments
-
SN74AHCT1G126DBVR
Texas Instruments
-
SN74LVC1G125DBVR
Texas Instruments
-
SN74AHCT1G125DBVR
Texas Instruments
-
SN74LVC2G17DBVR
Texas Instruments
-
SN74LVC2G07DCKR
Texas Instruments
-
SN74LVC1G34DCKR
Texas Instruments
-
SN74LVC2G17DCKR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
