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Texas Instruments SN74LVTT240PWLE
- Part No.:
- SN74LVTT240PWLE
- Manufacturer:
- Texas Instruments
- Package:
- -
- Datasheet:
-
SN74LVTT240PWLE.pdf
- Description:
- BUS DRIVER, LVT SERIES, 2-FUNC,
- Quantity:
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Inventory:10,000
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Product details
Overview
SN74LVTT240PWLE from Texas Instruments is a 3.3-V Advanced BiCMOS Technology (ABT) octal buffer/driver with dual 4-bit sections, 3-state outputs, and mixed-mode 5-V/3.3-V I/O compatibility. It delivers 64 mA sink current per output at VCC = 3 V, supports live insertion, and operates from –40°C to 85°C in a 20-pin TSSOP (PW) package for space-constrained board-level interfacing.
For engineers reviewing the SN74LVTT240PWLE datasheet, SN74LVTT240PWLE pinout, SN74LVTT240PWLE application, or SN74LVTT240PWLE equivalent, key selection criteria include its 3.3-V ABT logic family compatibility, 5-V tolerant inputs, 3-state enable control timing (tPZH ≤ 5.6 ns), and TSSOP-20 thermal performance (0.7 W max at TA = 55°C).
Technical Context
The SN74LVTT240PWLE implements two independent 4-bit noninverting buffer/driver sections, each with dedicated active-low output-enable (OE) control. Its ABT architecture enables TTL-level signal translation between 5-V legacy subsystems and 3.3-V logic domains without level shifters.
It features robust ESD/latch-up protection (≥500 mA per JESD-17), low ground bounce (VOLP < 0.8 V), and supports unregulated battery operation down to 2.7 V - making it suitable for hot-swap backplane interfaces and mixed-voltage industrial controllers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Operating Range | 2.7 V to 3.6 V - enables direct connection to Li-ion battery rails and low-noise 3.3-V LDOs without regulation overhead |
| IOL / IOH | 64 mA / –32 mA at VCC = 3 V - drives standard TTL loads and multiple CMOS inputs without external buffers |
| tPZH / tPLZ | ≤ 5.6 ns / ≤ 5.8 ns - ensures fast output disable timing for bus arbitration and dynamic power gating |
| VIH / VIL | 2 V / 0.8 V - accepts 5-V TTL input thresholds while powered from 3.3-V supply, eliminating level translators |
| ICC (Active) | 8.6–12 mA - low static power enables use in always-on monitoring circuits with minimal thermal impact |
| IOZL / IOZH | ±5 µA - guarantees high-impedance state integrity during sleep mode or system reset sequences |
Pinout & Package
SN74LVTT240PWLE is housed in a 20-pin Thin Shrink Small-Outline Package (TSSOP, PW), 4.4 mm × 6.5 mm body, 0.65 mm pitch, with exposed pad not present. Pinout matches industry-standard TSSOP-20 footprint for drop-in PCB replacement of compatible TI ABT devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 19 | 1OE, 2OE | Active-low output-enable controls for Section 1 (pins 2–5, 18–15) and Section 2 (pins 11–14, 7–4) |
| 2–5, 15–18 | 1A1–1A4, 2Y1–2Y4 | Section 1 inputs (A) and Section 2 outputs (Y); noninverting data path per buffer |
| 7–10, 11–14 | 2A1–2A4, 1Y1–1Y4 | Section 2 inputs (A) and Section 1 outputs (Y); cross-wired layout supports bidirectional bus buffering |
| 10, 20 | GND, VCC | Power reference and supply pins - decoupling capacitor placement adjacent to pin 20 minimizes switching noise |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode 5-V/3.3-V I/O | 5-V tolerant inputs and 3.3-V outputs eliminate external level-shifting components in hybrid voltage systems |
| Live insertion support | Robust input/output clamp structure (±50 mA) and controlled power-up sequencing prevent bus contention during hot-plug events |
| Low ground bounce (VOLP) | <0.8 V at VCC = 3.3 V ensures signal integrity on shared ground planes with high-speed digital loads |
| High latch-up immunity | Exceeds 500 mA per JEDEC JESD-17 - critical for industrial environments with ESD-prone connectors and long cables |
| Unregulated battery operation | Functional down to 2.7 V VCC enables direct integration into portable equipment with aging or variable battery sources |
Applications
| Industrial PLC Backplane Interface | Legacy System Bus Translator |
|---|---|
|
Use Scenario: Interfacing 5-V TTL-based sensor modules to a 3.3-V microcontroller-based main controller in modular automation racks. IC Role / Device Role / Timing Role: Bidirectional octal buffer providing voltage-domain isolation and bus drive strength amplification. Use Value: Eliminates discrete level shifters and reduces BOM count by 4+ components per interface channel while maintaining <5.8 ns disable timing for real-time fault response. |
Use Scenario: Upgrading aging 5-V ISA-bus peripherals to operate with modern 3.3-V host controllers in test instrumentation. IC Role / Device Role / Timing Role: 3-state octal driver enabling software-controlled bus arbitration and hot-swap capability. Use Value: Supports live insertion without system reboot and tolerates 5-V input transients during peripheral hot-plug, reducing field service downtime. |
| Embedded Data Acquisition Front-End | Automotive Diagnostic Interface Module |
|
Use Scenario: Buffering analog-to-digital converter (ADC) parallel output lines to a 3.3-V FPGA in high-noise factory-floor DAQ systems. IC Role / Device Role / Timing Role: Low-ground-bounce driver isolating sensitive ADC digital outputs from FPGA switching noise. Use Value: VOLP < 0.8 V prevents false sampling triggered by simultaneous output switching, improving effective resolution by ≥1 LSB. |
Use Scenario: Translating diagnostic signals between 5-V CAN transceiver status lines and 3.3-V automotive microcontroller GPIOs. IC Role / Device Role / Timing Role: Voltage-tolerant buffer ensuring reliable communication handshaking across supply domains. Use Value: Operates over –40°C to 85°C and withstands 5-V transients common on vehicle diagnostic buses, meeting ISO 11898-2 EMC requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVT240PW | No 5-V input tolerance; VIH/VIL specified only for 3.3-V logic levels; lower IOL (32 mA) | Suitable only in pure 3.3-V systems; cannot replace SN74LVTT240PWLE in mixed-voltage designs | Select when cost sensitivity outweighs mixed-voltage flexibility and drive strength requirements |
| 74ALVC240PW | Lower ICC (2.5 mA active), but no 5-V input tolerance and reduced latch-up rating (200 mA) | Limited to low-power, single-supply 3.3-V applications; unsuitable for industrial backplanes or hot-swap use | Choose for battery-powered portable devices where ultra-low static current is prioritized over robustness |
Compared with SN74LVT240PW and 74ALVC240PW, the SN74LVTT240PWLE uniquely combines 5-V input tolerance, 64 mA output drive, and >500 mA latch-up immunity - making it the only option among the three qualified for mixed-voltage industrial control and live-insertion applications.
Availability
SN74LVTT240PWLE is available at Aetrix Electronics and suitable for industrial PLC backplane interfaces, legacy bus translator modules, and embedded data acquisition front-ends requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74LVTT240PWLE 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 company founded in 1930, specializing in analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The SN74LVTT240PWLE belongs to TI's Advanced BiCMOS Technology (ABT) logic family, engineered specifically for robust mixed-voltage interfacing in industrial control, test equipment, and telecom infrastructure.
FAQ
What is the maximum operating temperature range for the SN74LVTT240PWLE?
The SN74LVTT240PWLE is characterized for operation from –40°C to +85°C ambient temperature. This industrial-grade rating ensures reliable functionality in factory automation cabinets, outdoor telecom enclosures, and vehicle-mounted diagnostic tools where thermal cycling and sustained elevated temperatures occur. The device maintains full electrical specifications across this range without derating.
Does the SN74LVTT240PWLE support live insertion in backplane applications?
Yes, the SN74LVTT240PWLE supports live insertion due to its robust input/output clamp structure (±50 mA), high latch-up immunity (>500 mA per JESD-17), and controlled power-up behavior. When OE is tied to VCC via a pullup resistor, outputs remain in high-impedance until supply stabilizes - preventing bus contention during hot-plug events in modular rack systems.
Can the SN74LVTT240PWLE accept 5-V inputs while powered from a 3.3-V supply?
Yes, the SN74LVTT240PWLE accepts 5-V input signals with VCC = 3.3 V. Its input voltage range extends to 7 V, and VIH is specified at 2 V - enabling direct connection to 5-V TTL logic without external level shifters. This mixed-mode capability is explicitly validated in the SCES005 datasheet under recommended operating conditions.
What is the output drive strength of the SN74LVTT240PWLE at 3.3-V supply?
At VCC = 3.3 V, the SN74LVTT240PWLE delivers 64 mA sink current (IOL) and –32 mA source current (IOH) per output. These values are confirmed in the "Electrical Characteristics" table of the SCES005 datasheet and ensure compatibility with standard TTL loads and fan-out of ≥10 LS-TTL inputs without signal degradation.
Which package type does the SN74LVTT240PWLE use, and is it RoHS-compliant?
The SN74LVTT240PWLE uses a 20-pin Thin Shrink Small-Outline Package (TSSOP, PW) with 0.65 mm lead pitch and 4.4 mm × 6.5 mm body dimensions. While the original SCES005 datasheet predates RoHS, TI's current manufacturing process for PW-packaged ABT logic devices complies with RoHS Directive 2011/65/EU - verified via TI's official product change notices and material declarations.
SN74LVTT240PWLE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Elements:
- -
- Number of Bits per Element:
- -
- Input Type:
- -
- Output Type:
- -
- Current - Output High, Low:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
SN74LVTT240PWLE FAQ
1.How can I place an order for SN74LVTT240PWLE through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVTT240PWLE 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 SN74LVTT240PWLE reliable?
The price and inventory of SN74LVTT240PWLE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVTT240PWLE is usually 5 days.
3.What payment methods are accepted for SN74LVTT240PWLE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVTT240PWLE transactions.
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4.How is shipping managed for SN74LVTT240PWLE?
SN74LVTT240PWLE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVTT240PWLE 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 SN74LVTT240PWLE?
For technical support, including SN74LVTT240PWLE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVTT240PWLE requirements.
6.How does Aetrix verify that SN74LVTT240PWLE is sourced from the original manufacturer or authorized distributors?
All SN74LVTT240PWLE 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 SN74LVTT240PWLE meets industry standards.
7.What is the process for return or replacement of SN74LVTT240PWLE?
All SN74LVTT240PWLE units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVTT240PWLE, 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 SN74LVTT240PWLE part is unused and in its original packaging.
Return procedure for SN74LVTT240PWLE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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