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Texas Instruments SN74LVTH16245ADL
- Part No.:
- SN74LVTH16245ADL
- Manufacturer:
- Texas Instruments
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74LVTH16245ADL.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:602
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Product details
Overview
SN74LVTH16245ADL from Texas Instruments is a 3.3-V ABT 16-bit dual-octal noninverting bus transceiver with 3-state outputs, designed for asynchronous bidirectional data transfer between two 8-bit buses in mixed-voltage systems. It supports 5-V-tolerant inputs/outputs at 3.3-V VCC, delivers ±64 mA output drive, features bus-hold circuitry to eliminate external pull resistors, and operates from –40°C to 85°C in SSOP-48 package.
For engineers reviewing the SN74LVTH16245ADL datasheet, SN74LVTH16245ADL pinout, SN74LVTH16245ADL application, or SN74LVTH16245ADL equivalent, key selection criteria include its 3.3-V ABT logic family compatibility, hot-insertion support via Ioff and power-up 3-state, distributed VCC/GND pins for noise suppression, flow-through pinout for optimized PCB layout, and 2.7–3.6 V supply range enabling unregulated battery operation.
Technical Context
The SN74LVTH16245ADL implements dual 8-bit bidirectional transceivers using Advanced BiCMOS Technology (ABT), enabling TTL-level interfacing between 3.3-V and 5-V domains without level shifters. Its DIR and OE control inputs independently enable A→B or B→A data flow or place both ports in high-impedance isolation mode.
Active bus-hold circuitry maintains valid logic states on undriven A/B port inputs, eliminating external biasing. Ioff protection disables outputs during power-down to prevent backflow current, while power-up 3-state ensures outputs remain high-Z during VCC ramp-up from 0 V to 1.5 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.7 V to 3.6 V - supports unregulated battery operation and stable 3.3-V rail tolerance |
| IOL / IOH | 64 mA / –32 mA - drives heavy capacitive loads and interfaces directly with legacy 5-V TTL inputs |
| tPLH / tPHL | 2.3 ns / 2.1 ns @ VCC = 3.3 V - enables high-speed 16-bit bus communication up to ~200 MHz effective throughput |
| VIH / VIL | 2.0 V / 0.8 V - compatible with both 3.3-V CMOS and 5-V TTL input thresholds |
| Bus-Hold Current | ±75 µA @ VCC = 3.6 V - actively holds floating inputs without external resistors, reducing BOM count and board space |
| IOZPU / IOZPD | ±100 µA - ensures high-impedance state during power-up/down transitions, preventing bus contention |
| θJA | 63 °C/W (DL package) - defines thermal derating for continuous operation at ambient ≤ 70°C under typical airflow |
Pinout & Package
SN74LVTH16245ADL uses a 48-pin SSOP (Shrink Small-Outline Package) with 0.5-mm pitch, 12.6 mm × 6.1 mm body size, and 1.2 mm max height per JEDEC MO-153. Pin 1 is located at top-left corner with notch or index mark.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input | Selects data flow direction: low = B→A, high = A→B for respective 8-bit section |
| 1OE, 2OE | Output enable input | Low enables outputs; high forces both A and B ports into high-impedance state |
| A1–A8, B1–B8 (×2) | Bidirectional data I/O | Each pair connects to one 8-bit bus; input circuits always active, requiring defined logic levels |
| VCC (×4), GND (×6) | Power distribution | Distributed supply and ground pins minimize simultaneous switching noise and improve signal integrity |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode voltage operation | 5-V-tolerant I/Os at 3.3-V VCC enable direct interface with legacy 5-V systems without level translators |
| Flow-through architecture | Input and output pins arranged on opposite sides of package to simplify layer routing and reduce trace crossovers |
| Hot-insertion support | Ioff and power-up 3-state prevent damage and bus conflicts during live board insertion or removal |
| Bus-hold circuitry | Eliminates need for external pullup/pulldown resistors on unused data lines, saving PCB area and assembly cost |
| Distributed VCC/GND | Multiple power/ground pins reduce ground bounce (VOLP < 0.8 V) and improve high-speed switching stability |
Applications
| Industrial Backplane Interface | Memory Expansion Subsystem |
|---|---|
|
Use Scenario: Isolating and translating address/data between a 3.3-V FPGA controller and legacy 5-V SRAM modules on a modular PLC backplane. IC Role / Device Role / Timing Role: Bidirectional bus transceiver managing synchronous 16-bit parallel transfers with direction controlled by FPGA GPIO. Use Value: Enables drop-in replacement of older 5-V transceivers while maintaining timing margins due to sub-2.5 ns propagation delay. |
Use Scenario: Extending DRAM bus width in an embedded test instrument where main SoC operates at 3.3 V but memory module uses 5-V signaling. IC Role / Device Role / Timing Role: Level-shifting transceiver buffering read/write data paths between SoC and memory controller, with OE synchronized to memory access strobes. Use Value: Eliminates discrete level shifters and reduces BOM count by integrating bus-hold and hot-swap protection in single DL-package device. |
| Hot-Swappable I/O Module | Legacy Peripheral Bridge |
|
Use Scenario: Enabling safe insertion/removal of field I/O cards in a 3.3-V industrial controller rack without powering down the system. IC Role / Device Role / Timing Role: Isolation buffer on card-edge connector, with Ioff disabling outputs during partial insertion to prevent backdrive. Use Value: Meets MIL-STD-1399 hot-insertion requirements via guaranteed high-Z state below 1.5 V VCC and ±100 µA Ioff leakage. |
Use Scenario: Interfacing a modern 3.3-V microcontroller to legacy 5-V RS-422 transceivers and optocouplers in factory automation gateways. IC Role / Device Role / Timing Role: Voltage-tolerant bus repeater driving multiple 5-V receivers while receiving signals from 5-V sensors. Use Value: Supports 5.5-V absolute max input rating and 2.7–3.6 V supply range, allowing operation across degraded battery rails and noisy industrial supplies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16245ADGGR | Lower drive strength (±24 mA), no bus-hold, LVC family (not ABT), 1.65–3.6 V VCC | Suitable only for light-load, 3.3-V-only systems; lacks 5-V tolerance and hot-swap capability | Choose when cost sensitivity outweighs mixed-voltage and robustness requirements |
| SN74ALVCH16245DLR | Higher speed (tPLH/tPHL ≈ 1.9 ns), ALVC family, same 48-pin SSOP, no bus-hold | Requires external pull resistors; better for high-frequency clock domains but less tolerant of floating inputs | Prefer when propagation delay is critical and system design guarantees defined input states |
Compared with SN74LVC16245ADGGR and SN74ALVCH16245DLR, the SN74LVTH16245ADL uniquely combines 5-V I/O tolerance, integrated bus-hold, and Ioff-enabled hot insertion-making it the only choice for legacy-interfacing industrial modules requiring zero external biasing and live-card replacement.
Availability
SN74LVTH16245ADL is available at Aetrix Electronics and suitable for industrial backplane interfaces, hot-swappable I/O modules, memory expansion subsystems, and legacy peripheral bridges requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74LVTH16245ADL 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 over 90 years of innovation in industrial, automotive, and communications infrastructure markets.
The SN74LVTH16245ADL belongs to TI's Widebus™ ABT logic family, engineered specifically for robust 3.3-V bus interfacing in mixed-voltage systems requiring hot insertion, noise immunity, and legacy compatibility.
FAQ
What is the maximum operating temperature range for the SN74LVTH16245ADL?
The SN74LVTH16245ADL is rated for operation from –40°C to +85°C, meeting industrial temperature requirements. This range is specified in the official Texas Instruments datasheet SCBS143R and confirmed across all DL-package variants including SN74LVTH16245ADL and SN74LVTH16245ADLR. Operation outside this range may compromise electrical performance or reliability.
Does the SN74LVTH16245ADL support true 5-V input tolerance?
Yes, the SN74LVTH16245ADL supports input voltages up to 5.5 V regardless of VCC level, as verified in the Absolute Maximum Ratings table (VI = –0.5 V to 7 V) and Recommended Operating Conditions (VI = 5.5 V). This allows direct connection to 5-V TTL outputs without external level-shifting circuitry.
Can the SN74LVTH16245ADL be used in hot-swap applications?
Yes, the SN74LVTH16245ADL is explicitly designed for hot insertion, featuring Ioff circuitry that disables outputs when VCC = 0 V and power-up 3-state that maintains high-impedance during VCC ramp-up. These capabilities are documented in the Functional Description and Electrical Characteristics sections of the TI datasheet.
What package type does the SN74LVTH16245ADL use?
The SN74LVTH16245ADL uses a 48-pin SSOP (Shrink Small-Outline Package), designated "DL" in TI's packaging nomenclature. Mechanical drawings confirm dimensions of 12.6 mm × 6.1 mm × 1.2 mm max height, compliant with JEDEC MO-153 standard.
Is bus-hold functionality enabled by default on the SN74LVTH16245ADL?
Yes, bus-hold circuitry is internal and always active on all A- and B-port inputs of the SN74LVTH16245ADL. It eliminates the need for external pullup/pulldown resistors on unused or undriven lines, as stated in the Functional Description and Electrical Characteristics (II(hold) parameter).
SN74LVTH16245ADL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVTH
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Logic Type:
- Transceiver, Non-Inverting
- Number of Elements:
- 2
- Number of Bits per Element:
- 8
- 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
SN74LVTH16245ADL FAQ
1.How can I place an order for SN74LVTH16245ADL through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVTH16245ADL on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
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The price and inventory of SN74LVTH16245ADL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVTH16245ADL is usually 5 days.
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Once your SN74LVTH16245ADL 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 SN74LVTH16245ADL?
For technical support, including SN74LVTH16245ADL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVTH16245ADL requirements.
6.How does Aetrix verify that SN74LVTH16245ADL is sourced from the original manufacturer or authorized distributors?
All SN74LVTH16245ADL 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 SN74LVTH16245ADL meets industry standards.
7.What is the process for return or replacement of SN74LVTH16245ADL?
All SN74LVTH16245ADL units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVTH16245ADL, 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 SN74LVTH16245ADL part is unused and in its original packaging.
Return procedure for SN74LVTH16245ADL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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