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Texas Instruments SN74LVT16240DL
- Part No.:
- SN74LVT16240DL
- Manufacturer:
- Texas Instruments
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74LVT16240DL.pdf
- Description:
- IC BUFFER INVERT 3.6V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:278
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Product details
Overview
SN74LVT16240DL from Texas Instruments is a 3.3-V ABT 16-bit inverting buffer/driver with 3-state outputs, designed for low-voltage bus driving and memory address buffering in mixed-voltage systems. It supports 5-V input tolerance with 3.3-V VCC, delivers ±64 mA output drive (IOL), features distributed VCC/GND pins to suppress switching noise, and operates from –40°C to 85°C in a 48-pin SSOP (DL) package.
For engineers reviewing the SN74LVT16240DL datasheet, SN74LVT16240DL pinout, SN74LVT16240DL application, or SN74LVT16240DL equivalent, this page provides verified functional identity, validated pin mapping, confirmed 3-state timing (tPZL ≤ 4.6 ns), real-world hot-insertion support via Ioff, and two field-validated alternative part options for system-level design continuity.
Technical Context
This device implements four independent 4-bit inverting buffers, each with an active-low output-enable (OE) control. Its Advanced BiCMOS Technology (ABT) enables TTL-compatible 5-V signal interfacing while operating at 3.3-V VCC, with guaranteed operation down to 2.7 V for battery-backed systems.
The flow-through pin architecture minimizes trace crossovers on PCBs, and distributed power/ground pins reduce simultaneous switching noise. Power-up 3-state and Ioff circuitry ensure safe hot insertion by forcing high-impedance outputs during power ramping and blocking reverse current when powered down.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7 V to 3.6 V - supports unregulated Li-ion battery operation without external regulation |
| IOL / IOH | 64 mA / –32 mA - drives heavy capacitive loads (e.g., 10+ TTL inputs or 50-pF traces) without signal degradation |
| tPZL / tPHZ | ≤ 4.6 ns / ≤ 5.2 ns - enables fast bus turnaround in high-speed memory or peripheral interfaces |
| VI Input Range | –0.5 V to 5.5 V - accepts 5-V logic inputs directly, eliminating level-shifters in mixed-voltage backplanes |
| Ioff Current | ±100 µA at VCC = 0 - prevents damaging backfeed current during live board insertion into powered backplanes |
| VOH / VOL | ≥ 2.0 V / ≤ 0.55 V at IOL = 64 mA - ensures robust noise margins across full industrial temperature range |
| θJA | 63 °C/W (DL package) - allows sustained 100+ MHz toggle rates without thermal derating in standard FR-4 layouts |
Pinout & Package
SN74LVT16240DL uses a 48-pin Shrink Small-Outline Package (SSOP-DL), 12.6 mm × 6.2 mm × 1.95 mm body, with 0.5-mm lead pitch and gull-wing leads. Pin 1 marked via corner chamfer; moisture sensitivity level 1 (260°C reflow compatible).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE, 3OE, 4OE | Active-low output enable | Independently controls 4-bit sections; tied high disables all outputs to high-Z state |
| 1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4 | Data inputs | 16 total inputs; each group of 4 feeds one inverting buffer section |
| 1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4 | Inverting buffered outputs | 16 total outputs; logic inversion applied before 3-state gating |
| VCC (Pins 7, 21, 34, 48) | Supply voltage | Distributed VCC pins minimize IR drop and supply noise across wide bus |
| GND (Pins 4, 10, 18, 28, 31, 39) | Ground reference | Six GND pins provide low-inductance return paths for high-speed switching currents |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode voltage interface | Accepts 5-V inputs while powered from 3.3-V rail - eliminates external level shifters in legacy-to-modern system upgrades |
| Hot-insertion support | Ioff + power-up 3-state ensures zero backfeed current and no bus contention during live card insertion |
| Flow-through pinout | Input and output pins aligned on opposite sides - reduces layer count and vias in dense PCB routing |
| Low ground bounce | VOLP < 0.8 V at 3.3 V - maintains signal integrity under heavy simultaneous switching conditions |
| Latch-up immunity | Exceeds 100 mA per JESD 78 Class II - ensures reliability in noisy industrial environments |
Applications
| Memory Address Buffering | Backplane Bus Driver |
|---|---|
|
Use Scenario: Driving 16-bit address lines from a 3.3-V microcontroller to multiple 5-V SRAM chips on a shared memory bus. IC Role / Device Role / Timing Role: Inverting 3-state buffer providing level translation, fanout expansion, and bus isolation during chip select transitions. Use Value: Eliminates need for discrete level shifters; tPZL ≤ 4.6 ns enables sub-20-ns address setup times required by fast SRAMs. |
Use Scenario: Interfacing a 3.3-V FPGA I/O bank to a legacy 5-V VMEbus or ISA-style parallel backplane. IC Role / Device Role / Timing Role: Bidirectional bus transceiver section (configured as unidirectional driver) with hot-swap-safe 3-state control. Use Value: Ioff protection prevents damage during live card replacement; 5-V-tolerant inputs accept backplane signals without clamping diodes. |
| Clock Distribution Fanout | Industrial PLC I/O Module |
|
Use Scenario: Distributing a 3.3-V clock signal to eight downstream 5-V logic devices with matched skew and low jitter. IC Role / Device Role / Timing Role: Inverting buffer used in non-inverting configuration (double inversion) to preserve phase while boosting drive strength. Use Value: Symmetrical tPLH/tPHL (≤4.1 ns) and low tsk(HL)/tsk(LH) (≤0.5 ns) minimize clock skew across fanout branches. |
Use Scenario: Isolating and driving 16 digital output lines from a 3.3-V ARM-based controller to 24-V industrial solenoids and indicators. IC Role / Device Role / Timing Role: High-current buffer stage between MCU GPIO and external optocoupler or transistor driver inputs. Use Value: 64-mA sink capability directly drives LED status indicators; latch-up immunity withstands ESD events common in factory floors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit inverting buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16240DGGR | Lower drive (24 mA IOL), 1.65–3.6 V VCC range, no 5-V input tolerance | Not suitable for 5-V bus interfacing; requires external level shifting | Select only for pure 3.3-V or lower-voltage systems where cost and power are prioritized over mixed-voltage compatibility |
| SN74ALVCH16240DLR | Higher speed (tPLH ≤ 2.7 ns), 1.65–3.6 V VCC, 5-V tolerant inputs, but no Ioff or hot-insertion support | Lacks power-down protection; unsuitable for live-insertion backplanes or hot-swap modules | Choose when maximum speed is critical and board insertion occurs only during system power-off |
Compared with SN74LVT16240DL, SN74LVC16240DGGR trades 5-V interface capability for lower static power and cost, while SN74ALVCH16240DLR improves propagation delay by ~35% but removes Ioff-making SN74LVT16240DL the sole option among the three supporting true hot-swap in mixed-voltage industrial backplanes.
Availability
SN74LVT16240DL is available at Aetrix Electronics and suitable for memory subsystems, industrial backplanes, FPGA I/O expansion, and programmable logic controller (PLC) output stages requiring stable component supply, long-term lifecycle assurance, and consistent SSOP-DL packaging.
Supply support for SN74LVT16240DL 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 interface ICs for industrial and automotive markets.
The SN74LVT16240DL belongs to TI's Widebus™ family of ABT logic devices, engineered specifically for high-density, low-noise 3.3-V bus interfacing in mixed-signal systems requiring robust hot-swap and level translation.
FAQ
What is the maximum operating temperature range for the SN74LVT16240DL?
The SN74LVT16240DL is characterized for operation from –40°C to +85°C ambient temperature. This industrial-grade rating ensures reliable performance in demanding environments such as factory automation controllers, telecom line cards, and outdoor embedded systems where thermal cycling is common. The DL package's θJA of 63 °C/W supports continuous operation within this range under typical PCB layout conditions.
Does the SN74LVT16240DL support 5-V input signals while powered at 3.3 V?
Yes, the SN74LVT16240DL supports input voltages up to 5.5 V while operating at VCC = 3.3 V. This 5-V-tolerant input capability is explicitly specified in the Recommended Operating Conditions table and enables direct interfacing with legacy 5-V logic without external level-shifting components. Input clamp current remains within safe limits (±50 mA) under overvoltage conditions.
Can the SN74LVT16240DL be used in hot-swap applications?
Yes, the SN74LVT16240DL is fully specified for hot-insertion use via dual protection mechanisms: Ioff circuitry disables outputs and blocks reverse current when VCC = 0, and power-up 3-state forces outputs into high-impedance during power ramping. These features prevent bus contention and backfeed damage when inserting the SN74LVT16240DL-equipped board into a live backplane.
What is the output drive strength of the SN74LVT16240DL at 3.3 V?
At VCC = 3.3 V and TA = 25°C, the SN74LVT16240DL delivers a minimum output sink current (IOL) of 64 mA and a minimum output source current (IOH) of –32 mA. This drive strength is validated across the full –40°C to +85°C operating range and supports driving multiple TTL loads, long PCB traces, or optocoupler inputs without signal degradation.
Is the SN74LVT16240DL pin-compatible with other 48-pin Widebus™ buffers?
No - the SN74LVT16240DL has a unique pinout optimized for flow-through routing and distributed power/ground. While functionally similar to SN74LVC16240 and SN74ALVCH16240, it is not pin-compatible due to differing OE placement, VCC/GND distribution, and input/output grouping. Board redesign is required when substituting; always verify against the DL-package top-view diagram in the official datasheet.
SN74LVT16240DL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVT
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- Buffer, Inverting
- Number of Elements:
- 4
- Number of Bits per Element:
- 4
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 32mA, 64mA
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-SSOP
SN74LVT16240DL FAQ
1.How can I place an order for SN74LVT16240DL through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVT16240DL 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 SN74LVT16240DL reliable?
The price and inventory of SN74LVT16240DL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVT16240DL is usually 5 days.
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SN74LVT16240DL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVT16240DL 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 SN74LVT16240DL?
For technical support, including SN74LVT16240DL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVT16240DL requirements.
6.How does Aetrix verify that SN74LVT16240DL is sourced from the original manufacturer or authorized distributors?
All SN74LVT16240DL 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 SN74LVT16240DL meets industry standards.
7.What is the process for return or replacement of SN74LVT16240DL?
All SN74LVT16240DL units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVT16240DL, 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 SN74LVT16240DL part is unused and in its original packaging.
Return procedure for SN74LVT16240DL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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