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Texas Instruments SN74LVTH16240DL
- Part No.:
- SN74LVTH16240DL
- Manufacturer:
- Texas Instruments
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74LVTH16240DL.pdf
- Description:
- IC BUFFER INVERT 3.6V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,070
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Product details
Overview
SN74LVTH16240DL from Texas Instruments is a 3.3-V ABT 16-bit inverting buffer/driver with 3-state outputs, designed for memory address, clock, and bus-oriented applications. It features four independent 4-bit sections, active-low output-enable (OE) inputs, bus-hold circuitry on all data inputs, and supports mixed-mode 5-V input/3.3-V VCC operation in industrial systems.
For engineers reviewing the SN74LVTH16240DL datasheet, SN74LVTH16240DL pinout, SN74LVTH16240DL application, or SN74LVTH16240DL equivalent, key selection criteria include its 48-pin SSOP (DL) package, ±64 mA low-level output drive at 3.3 V, Ioff support for hot insertion, and bus-hold elimination of external pullup resistors.
Technical Context
The SN74LVTH16240DL implements an Advanced BiCMOS Technology (ABT) architecture optimized for 3.3-V operation with TTL-compatible interface capability. Its four independent 4-bit sections each feature symmetrical active-low OE control, inverting logic, and distributed VCC/GND pins to suppress high-speed switching noise.
It integrates power-up 3-state and Ioff circuitry to ensure high-impedance outputs during power transitions and prevent backflow current when powered down. Bus-hold circuitry maintains valid logic levels on unused inputs without external components, and the flow-through pinout minimizes trace routing complexity on PCBs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7 V to 3.6 V - enables stable operation under unregulated battery supply down to 2.7 V |
| IOL (max) | 64 mA per output - drives heavy capacitive loads or multiple TTL inputs directly |
| IOH (max) | –32 mA per output - supports robust high-level sourcing into TTL fanout |
| tPLH / tPHL | 2.2 ns to 4.1 ns at VCC = 3.3 V - ensures fast propagation for high-speed address or clock buffering |
| Bus-Hold Current | ±75 µA minimum - actively retains logic state on floating inputs without external resistors |
| Ioff | ±100 µA max at VCC = 0 - blocks damaging current flow during hot-insertion or partial power-down |
| Operating Temp | –40°C to +85°C - qualified for industrial ambient environments |
Pinout & Package
SN74LVTH16240DL is housed in 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 (MSL) is Level-1 (unlimited reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OE, 2OE, 3OE, 4OE | Active-low output-enable control | Each enables/disables one 4-bit section independently; tied high via pullup for default disable |
| 1A1–1A4, 2A1–2A4, 3A1–3A4, 4A1–4A4 | Data inputs (16 total) | All feature integrated bus-hold; tolerate 5-V inputs while operating at 3.3-V VCC |
| 1Y1–1Y4, 2Y1–2Y4, 3Y1–3Y4, 4Y1–4Y4 | Inverting buffered outputs (16 total) | 3-state capable; VOL ≤ 0.55 V at IOL = 64 mA ensures solid TTL logic low |
| VCC (Pins 7, 18, 28, 39) | Power supply | Distributed VCC pins reduce simultaneous switching noise and improve PDN stability |
| GND (Pins 4, 10, 15, 21, 27, 31, 36, 42) | Ground reference | Eight GND pins provide low-inductance return paths for high-speed switching currents |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode voltage tolerance | 5-V-tolerant inputs with 3.3-V VCC - interfaces directly with legacy 5-V logic without level shifters |
| Hot-insertion support | Ioff and power-up 3-state - prevents backfeed and bus contention during live board insertion |
| Bus-hold on all inputs | Eliminates need for 10-kΩ external pullup/pulldown resistors - reduces BOM count and layout area |
| Flow-through pinout | Input and output pins arranged opposite each other per 4-bit section - simplifies layer stacking and minimizes trace crossovers |
| Distributed power/ground | Four VCC and eight GND pins - lowers effective power-supply inductance and improves signal integrity at >100 MHz |
Applications
| Memory Address Buffering | Industrial Backplane Interface |
|---|---|
Use Scenario: Driving 16-bit address lines from a microcontroller to multiple SRAM or Flash devices on a shared bus. IC Role / Device Role / Timing Role: Inverting 3-state buffer isolating CPU address outputs; enables time-multiplexed access to multiple memory banks. Use Value: 64 mA drive strength ensures clean edges into 100 pF+ bus capacitance; bus-hold prevents glitches during address decode gaps. | Use Scenario: Interfacing a 3.3-V FPGA I/O bank to a 5-V legacy backplane carrying control/status signals. IC Role / Device Role / Timing Role: Level-translating buffer with 5-V-tolerant inputs and 3.3-V CMOS outputs; provides isolation and drive gain. Use Value: Eliminates discrete level shifters; Ioff protects FPGA during hot-swap of backplane cards. |
| Clock Distribution Network | Test Equipment Signal Conditioning |
Use Scenario: Fan-out and impedance matching of a 25-MHz system clock to multiple ASIC clock inputs. IC Role / Device Role / Timing Role: Low-skew inverting driver with matched tPLH/tPHL; used as clock buffer with enable gating. Use Value: 0.5 ns max skew (tsk) ensures synchronous edge delivery; distributed VCC/GND minimizes jitter from supply noise. | Use Scenario: Conditioning digital stimulus/response signals in automated test equipment with mixed-voltage DUTs. IC Role / Device Role / Timing Role: Bidirectional 3-state buffer enabling flexible signal routing between 3.3-V controller and 5-V DUT ports. Use Value: Four independent OE controls allow dynamic reconfiguration of signal paths without firmware changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16240DGGR | Lower drive (24 mA IOL), no bus-hold, 1.65–3.6 V VCC range | Suitable only for light-load, fully terminated buses; requires external pullups if inputs float | Choose for cost-sensitive, low-power designs where bus-hold is unnecessary and load is ≤10 pF |
| SN74ALVCH16240DLR | Higher speed (tPLH ≤ 2.0 ns), 1.65–3.6 V VCC, no 5-V tolerance | Not compatible with 5-V input sources; requires level-shifting for mixed-voltage systems | Choose when maximum speed is critical and entire system operates at ≤3.3 V |
Compared with SN74LVC16240DGGR and SN74ALVCH16240DLR, the SN74LVTH16240DL uniquely combines 5-V input tolerance, integrated bus-hold, and 64 mA drive - making it the only option among the three qualified for direct interfacing to legacy 5-V logic without redesign.
Availability
SN74LVTH16240DL is available at Aetrix Electronics and suitable for industrial control systems, memory subsystems, and test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74LVTH16240DL 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 experience in high-reliability industrial and automotive IC design.
The SN74LVTH16240DL belongs to TI's Widebus™ family of advanced bus-interface devices, engineered specifically to increase density and performance of 3-state memory address drivers, clock drivers, and bus transceivers in mixed-voltage systems.
FAQ
What is the maximum output drive capability of the SN74LVTH16240DL?
The SN74LVTH16240DL delivers up to 64 mA of low-level output current (IOL) per pin at VCC = 3.3 V, and –32 mA of high-level output current (IOH). This allows direct driving of multiple TTL loads or high-capacitance traces without external buffers. The SN74LVTH16240DL maintains VOL ≤ 0.55 V under full 64 mA load, ensuring robust logic-level margins in noisy industrial environments.
Does the SN74LVTH16240DL support hot-plug operation?
Yes, the SN74LVTH16240DL supports hot-insertion via dual protection mechanisms: Ioff circuitry disables outputs when VCC = 0, preventing backflow current, and power-up 3-state forces outputs into high-impedance during power ramp-up/down. These features are fully characterized per JEDEC standards and eliminate bus contention risks during live card replacement - a key requirement for the SN74LVTH16240DL in modular industrial backplanes.
Can the SN74LVTH16240DL interface directly with 5-V logic devices?
Yes, the SN74LVTH16240DL accepts 5-V input signals while operating at 3.3-V VCC, enabling seamless connection to legacy 5-V microcontrollers, FPGAs, or peripherals without external level shifters. Input voltage tolerance extends to 5.5 V, and the device maintains guaranteed VIH/VIL thresholds (2.0 V/0.8 V) under all operating conditions - a core specification validated across the full –40°C to +85°C range for the SN74LVTH16240DL.
What is the purpose of bus-hold circuitry on the SN74LVTH16240DL inputs?
The bus-hold circuitry on all 16 data inputs of the SN74LVTH16240DL actively maintains the last-valid logic state when inputs float, eliminating the need for external 10-kΩ pullup or pulldown resistors. This reduces BOM cost, saves PCB area, and prevents undefined states during power-up, reset, or tri-state transitions - a verified behavior confirmed in the SN74LVTH16240DL datasheet with ±75 µA minimum hold current at VCC = 3.6 V.
What package type and dimensions does the SN74LVTH16240DL use?
The SN74LVTH16240DL uses a 48-pin Shrink Small-Outline Package (SSOP-DL) measuring 12.6 mm × 6.2 mm × 1.95 mm with 0.5-mm lead pitch. It is RoHS-compliant, has NIPDAU lead finish, and carries MSL Level-1 rating (unlimited floor life). The DL package is distinct from the pin-compatible TSSOP (DGG) variant and is supplied in tubes of 25 units - a configuration confirmed in TI's official packaging addendum for the SN74LVTH16240DL.
SN74LVTH16240DL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVTH
- 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
SN74LVTH16240DL FAQ
1.How can I place an order for SN74LVTH16240DL through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVTH16240DL 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 SN74LVTH16240DL reliable?
The price and inventory of SN74LVTH16240DL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVTH16240DL is usually 5 days.
3.What payment methods are accepted for SN74LVTH16240DL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVTH16240DL transactions.
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4.How is shipping managed for SN74LVTH16240DL?
SN74LVTH16240DL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVTH16240DL 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 SN74LVTH16240DL?
For technical support, including SN74LVTH16240DL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVTH16240DL requirements.
6.How does Aetrix verify that SN74LVTH16240DL is sourced from the original manufacturer or authorized distributors?
All SN74LVTH16240DL 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 SN74LVTH16240DL meets industry standards.
7.What is the process for return or replacement of SN74LVTH16240DL?
All SN74LVTH16240DL units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVTH16240DL, 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 SN74LVTH16240DL part is unused and in its original packaging.
Return procedure for SN74LVTH16240DL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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