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Texas Instruments SN74LV240ADGVR
- Part No.:
- SN74LV240ADGVR
- Manufacturer:
- Texas Instruments
- Package:
- 20-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN74LV240ADGVR.pdf
- Description:
- IC BUFFER INVERT 5.5V 20TVSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,964
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Product details
Overview
SN74LV240ADGVR from Texas Instruments is an octal inverting buffer/driver with 3-state outputs, designed for 2V–5.5V VCC operation. It delivers 6.5ns max propagation delay at 5V, supports mixed-mode voltage translation (inputs tolerant to 5.5V), and features Ioff for live insertion and partial power-down. It serves as a memory address or bus transceiver in compact portable electronics.
For engineers reviewing the SN74LV240ADGVR datasheet, SN74LV240ADGVR pinout, SN74LV240ADGVR application, or SN74LV240ADGVR equivalent, key selection criteria include its 20-pin TVSOP package, dual 4-bit inverted 3-state architecture, 8mA output drive at 3.3V, ground-bounce control (<0.8V), and industrial temperature range (–40°C to 125°C).
Technical Context
The SN74LV240ADGVR implements two independent 4-bit inverting buffers, each with dedicated output-enable (OE) inputs-1OE controls Y1–Y4, 2OE controls Y1'–Y4'. When OE is low, A inputs are inverted and driven to Y outputs; when OE is high, all eight outputs enter high-impedance state. This enables bidirectional bus control without external logic.
Its Ioff feature ensures input/output leakage remains ≤5 µA when VCC = 0 V, enabling safe hot-plug operation. Input tolerance up to 5.5V allows interfacing with higher-voltage logic while operating at 2.5V or 3.3V, supporting down-translation in mixed-supply systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2 V to 5.5 V - Enables single-supply operation across legacy 3.3V and modern low-voltage 2.5V/1.8V domains. |
| Max tpd | 6.5 ns at VCC = 5 V, CL = 15 pF - Supports high-speed address/data buffering in memory subsystems up to ~150 MHz. |
| IOL/IOH | 16 mA sink / 16 mA source at VCC = 4.5–5.5 V - Drives multiple CMOS loads or light capacitive buses without external buffers. |
| VIH(min) | VCC × 0.7 - Ensures reliable high-level recognition across full VCC range, critical for noise margin in noisy environments. |
| Ioff | ≤5 µA at VCC = 0 V - Prevents back-drive current during partial power-down, protecting powered sections of the system. |
| Input Voltage Tolerance | Up to 5.5 V - Allows direct connection to 5V logic or GPIOs without level-shifting circuitry. |
| Operating Temperature | –40°C to +125°C - Qualified for automotive under-hood and industrial control applications requiring extended thermal robustness. |
Pinout & Package
SN74LV240ADGVR is housed in a 20-pin Thin Very Small Outline Package (TVSOP, DGV), measuring 5.0 mm × 6.4 mm (body: 5.0 mm × 4.4 mm), with 0.4 mm lead pitch and exposed pad not present. It is RoHS-compliant, moisture-sensitivity level 1 (260°C peak reflow), and supplied in tape-and-reel (2000 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE | Active-low enable for first 4-bit section (Y1–Y4) | Asserting low enables inverted pass-through from A1–A4 to Y1–Y4; high places outputs in high-Z. |
| 1A1–1A4 | Inverted data inputs for first section | Each drives corresponding Y output with logical inversion; 5.5V-tolerant regardless of VCC. |
| 2Y1–2Y4 | Inverted outputs for second section | Driven by 2A1–2A4 when 2OE is low; high-impedance when 2OE is high. |
| 2OE | Active-low enable for second 4-bit section (Y1'–Y4') | Independent control enables time-multiplexed or isolated bus segments. |
| GND (Pin 10) | Ground reference | Primary return path for all internal logic and output currents; must be low-inductance connection. |
| VCC (Pin 20) | Power supply | Supplies core logic and output drivers; requires local 0.1 µF bypass capacitor per TI layout guidance. |
Key Features
| Feature | Design Value |
|---|---|
| Wide VCC range (2V–5.5V) | Eliminates need for separate level shifters in multi-rail systems; simplifies power architecture in wearables and IoT edge nodes. |
| 6.5 ns max tpd at 5V | Meets timing budgets for DDR address latching and clock distribution in sub-150 MHz memory interfaces. |
| Ioff protection | Enables hot-swap capability in modular base stations and field-upgradable medical modules without risk of latch-up or damage. |
| 5.5V-tolerant inputs | Permits direct interface with 5V microcontrollers or sensors while operating at 3.3V or 2.5V, reducing BOM count. |
| Low ground bounce (<0.8V) | Maintains signal integrity on shared ground planes in dense PCB layouts typical of smartphones and wearables. |
Applications
| Memory Address Buffering | Industrial Bus Transceiver |
|---|---|
Use Scenario: Driving address lines between a microcontroller and parallel NOR flash or SRAM in space-constrained embedded controllers. IC Role / Device Role / Timing Role: Inverting 3-state buffer providing isolation and fanout expansion; enables shared address bus between multiple memory devices. Use Value: Reduces board area vs discrete solutions; 6.5 ns delay ensures setup/hold compliance at 33 MHz bus speeds. | Use Scenario: Isolating and conditioning control signals in programmable logic controller (PLC) I/O modules with mixed 3.3V/5V sensor interfaces. IC Role / Device Role / Timing Role: Level-translating buffer with Ioff support, allowing safe insertion into live backplanes during maintenance. Use Value: Eliminates need for external isolation switches; 125°C rating supports operation in uncooled enclosures. |
| Smartphone Baseband Interface | Wearable Sensor Hub |
Use Scenario: Interfacing application processor GPIOs to peripheral ICs (e.g., display driver, audio codec) with differing voltage domains. IC Role / Device Role / Timing Role: Voltage-tolerant inverting driver managing signal polarity and bus contention via independent OE control. Use Value: Simplifies routing in ultra-thin form factors; low 0.4 mm pitch TVSOP fits tight keep-out zones near RF sections. | Use Scenario: Aggregating and buffering analog front-end (AFE) sensor outputs (ECG, SpO₂) before ADC sampling in fitness trackers. IC Role / Device Role / Timing Role: Low-noise, low-power buffer isolating sensitive analog paths from digital switching noise on shared PCB layers. Use Value: VOLP <0.8V minimizes ground disturbance; 20 µA ICC at 5.5V extends battery life in always-on monitoring modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal inverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC240APWR | Lower VCC min (1.65V), faster tpd (5.1 ns @ 3.3V), but no Ioff support and only 3.6V input tolerance. | Better for ultra-low-voltage 1.8V systems; unsuitable for hot-swap or 5V-tolerant designs. | Select when operating below 2V or prioritizing speed over robustness; avoid if live insertion is required. |
| 74LVX240M | Same VCC range (2–3.6V), but rated only to 85°C ambient and lacks 5.5V input tolerance. | Limited to commercial-grade consumer electronics; cannot replace SN74LV240ADGVR in industrial or automotive contexts. | Acceptable for cost-sensitive smartphone accessories; reject for any design requiring >85°C operation or 5V interfacing. |
Compared with SN74LVC240APWR and 74LVX240M, the SN74LV240ADGVR uniquely combines 5.5V input tolerance, Ioff, and –40°C to 125°C qualification-making it the only choice for ruggedized, mixed-voltage, hot-pluggable systems where reliability trumps marginal speed gains.
Availability
SN74LV240ADGVR is available at Aetrix Electronics and suitable for memory address buffering, industrial bus isolation, smartphone baseband interfacing, and wearable sensor hub applications requiring stable component supply across long production lifecycles.
Supply support for SN74LV240ADGVR 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 leadership in logic IC innovation and automotive-grade reliability.
The SN74LV240A product line was engineered for high-density, low-power 3-state bus interfacing in memory, clock, and peripheral subsystems-targeting space-constrained, thermally demanding applications from handhelds to industrial controllers.
FAQ
What is the maximum operating temperature for the SN74LV240ADGVR?
The SN74LV240ADGVR is specified for operation from –40°C to +125°C ambient temperature. This industrial-grade rating is validated per JEDEC JESD22-A108 and applies across the full 2V–5.5V VCC range. The device's thermal resistance (RθJA = 116.2°C/W in TVSOP) and junction temperature limit (150°C) ensure reliable performance in enclosed, uncooled environments typical of motor drives and automotive ECUs.
Does the SN74LV240ADGVR support hot-plug insertion?
Yes, the SN74LV240ADGVR supports live insertion via its Ioff feature, which limits input/output leakage to ≤5 µA when VCC = 0 V. This prevents back-driving powered circuitry during card replacement in modular systems. The specification is verified per JESD78 and confirmed in TI's SCLS384K datasheet Section 7.3-no external protection circuitry is required.
What is the input voltage tolerance of the SN74LV240ADGVR?
The SN74LV240ADGVR accepts input voltages up to 5.5 V regardless of VCC level-a feature explicitly documented in Section 5.1 (Absolute Maximum Ratings) and Section 7.3 of the SCLS384K datasheet. This enables direct interfacing with 5V microcontrollers or sensors while operating at 2.5V or 3.3V, eliminating external level shifters in mixed-supply designs.
How does the SN74LV240ADGVR handle ground bounce?
The SN74LV240ADGVR specifies typical output ground bounce (VOLP) <0.8 V at VCC = 3.3 V and TA = 25°C (Section 1, Features). This is achieved through optimized output stage design and internal current-limiting, reducing transient ground shifts during simultaneous switching-critical for maintaining signal integrity in high-density mobile PCBs where shared ground planes are unavoidable.
Can the SN74LV240ADGVR drive standard TTL loads?
No, the SN74LV240ADGVR is a CMOS device with rail-to-rail output swing and 16 mA drive capability at 5V, but it is not TTL-compatible in terms of input thresholds or fanout. Its VIH (≥0.7×VCC) and VIL (≤0.3×VCC) follow CMOS logic levels-not TTL's fixed 2.0V/0.8V thresholds. It can drive TTL inputs only if those inputs meet CMOS-compatible voltage thresholds, as verified in actual system-level testing.
SN74LV240ADGVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LV
- Package/Case:
- 20-TFSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 4
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 16mA, 16mA
- Voltage - Supply:
- 2V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TVSOP
SN74LV240ADGVR FAQ
1.How can I place an order for SN74LV240ADGVR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LV240ADGVR 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 SN74LV240ADGVR reliable?
The price and inventory of SN74LV240ADGVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LV240ADGVR is usually 5 days.
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SN74LV240ADGVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LV240ADGVR 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 SN74LV240ADGVR?
For technical support, including SN74LV240ADGVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LV240ADGVR requirements.
6.How does Aetrix verify that SN74LV240ADGVR is sourced from the original manufacturer or authorized distributors?
All SN74LV240ADGVR 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 SN74LV240ADGVR meets industry standards.
7.What is the process for return or replacement of SN74LV240ADGVR?
All SN74LV240ADGVR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LV240ADGVR, 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 SN74LV240ADGVR part is unused and in its original packaging.
Return procedure for SN74LV240ADGVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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