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Texas Instruments SN74LVC16245ADLR
- Part No.:
- SN74LVC16245ADLR
- Manufacturer:
- Texas Instruments
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74LVC16245ADLR.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,911
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Product details
Overview
SN74LVC16245ADLR from Texas Instruments is a 16-bit dual-octal noninverting bus transceiver with 3-state outputs, designed for asynchronous bidirectional data transfer between 1.65–3.6 V buses. It supports mixed-mode signaling (5.5 V-tolerant inputs at 3.3 V VCC), delivers ≤4 ns propagation delay at 3.3 V, and enables isolated bus communication in industrial backplanes and embedded peripheral interfaces.
For engineers reviewing the SN74LVC16245ADLR datasheet, SN74LVC16245ADLR pinout, SN74LVC16245ADLR application, or SN74LVC16245ADLR equivalent, key selection criteria include Ioff-enabled live insertion support, ±24 mA output drive at 3.3 V, 5.5 V input tolerance, and SSOP-48 package compatibility with legacy 0.635 mm pitch layouts.
Technical Context
The SN74LVC16245ADLR implements two independent 8-bit transceiver channels (A↔B), each controlled by dedicated DIR and OE pins-enabling simultaneous or segregated bidirectional data flow. Its CMOS design ensures balanced output drive, rail-to-rail input voltage acceptance (0–5.5 V), and guaranteed 3-state isolation when OE is high.
It features Ioff circuitry that disables outputs and blocks current backflow during partial power-down, meets JESD 22 ESD ratings (2000-V HBM, 1000-V CDM), and operates across –40°C to +125°C with thermal resistance RθJA = 70.6°C/W in SSOP-48 package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 3.6 V - Enables direct interface with 1.8 V, 2.5 V, and 3.3 V logic domains without level shifters. |
| Input Voltage Tolerance | 0 V to 5.5 V - Allows safe connection to 5 V systems while powered from 3.3 V, supporting mixed-voltage board designs. |
| tpd (Max) | 4.0 ns at VCC = 3.3 V - Supports >100 MHz data rates in short-trace, low-capacitance bus applications. |
| IOL / IOH (Max) | ±24 mA at VCC = 3.0 V - Drives standard TTL loads and multiple LVC inputs without external buffers. |
| Ioff Current | ±20 µA at VI/VO = 5.5 V, VCC = 0 V - Prevents damaging back-current during hot-swap or staggered power sequencing. |
| Operating Temperature | –40°C to +125°C - Qualified for industrial motor drives, telecom infrastructure, and automotive under-hood auxiliary modules. |
| ESD Rating | 2000-V HBM, 1000-V CDM - Meets IEC 61000-4-2 system-level robustness requirements for field-deployable equipment. |
Pinout & Package
SN74LVC16245ADLR is packaged in SSOP-48 (DL package), 15.88 mm × 7.49 mm body size, 0.635 mm lead pitch, RoHS-compliant NiPdAu finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input | Active-HIGH selects A→B data flow; LOW selects B→A - enables independent channel direction management. |
| 1OE, 2OE | Output enable input | Active-LOW enables transceiver; HIGH forces all A/B I/Os into high-impedance - provides per-channel bus isolation. |
| 1A1–1A8, 2A1–2A8 | Port A I/O terminals | Bidirectional data lines tied to one bus segment; tolerate 5.5 V regardless of VCC - serve as 3.3 V domain interface points. |
| 1B1–1B8, 2B1–2B8 | Port B I/O terminals | Bidirectional data lines tied to second bus segment; identical electrical specs to Port A - supports mirrored dual-bus topology. |
| VCC (Pins 7, 18, 31, 42) | Power supply | Four distributed VCC pins reduce IR drop and improve noise immunity across wide 48-pin layout. |
| GND (Pins 4, 10, 15, 21, 28, 34, 39, 45) | Ground reference | Eight GND pins provide low-inductance return paths and minimize ground bounce in high-speed switching. |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-voltage interface | 5.5 V-tolerant inputs allow direct connection to 5 V microcontrollers or FPGAs while operating from 3.3 V VCC - eliminates discrete level translators. |
| Ioff partial-power-down protection | Blocks current flow between powered/unpowered sections during hot-plug or brownout - essential for modular backplane systems. |
| Low ground bounce (VOLP < 0.8 V) | Minimizes signal integrity degradation on shared ground planes during simultaneous switching - critical for noise-sensitive analog co-location. |
| High noise immunity (VOHV > 2 V) | Suppresses false triggering from fast transient coupling on PCB traces - improves reliability in electrically noisy motor drive environments. |
| Widebus™ architecture | Optimized pinout and internal routing reduce crosstalk and skew between adjacent bits - maintains timing margin in parallel 16-bit data paths. |
Applications
| Industrial Backplane Interface | Embedded Peripheral Bridge |
|---|---|
Use Scenario: Isolating CPU local bus from expansion slot peripherals in programmable logic controllers. IC Role / Device Role / Timing Role: Bidirectional data shuttle between 3.3 V ARM processor bus and 5 V legacy I/O modules. Use Value: Eliminates need for separate level-shifting ICs while maintaining <4 ns propagation delay for real-time I/O response. |
Use Scenario: Connecting FPGA-based sensor fusion engine to multi-protocol display and storage interfaces. IC Role / Device Role / Timing Role: Dual-channel transceiver enabling concurrent SPI flash access and RGB display data streaming. Use Value: Per-channel DIR/OE control allows dynamic reconfiguration of data path direction without software overhead. |
| Motor Drive Control Bus | Wearable Health Data Hub |
Use Scenario: Interfacing MCU to isolated gate driver banks and current-sense ADCs in BLDC inverter modules. IC Role / Device Role / Timing Role: Robust 16-bit data conduit tolerant of EMI-rich motor switching noise and supply ripple. Use Value: 125°C rating and 2000-V HBM ESD withstand ensure operation in thermally constrained power stage enclosures. |
Use Scenario: Aggregating biometric sensor streams (ECG, SpO₂, motion) onto a low-power Bluetooth SoC. IC Role / Device Role / Timing Role: Low-voltage (1.8 V) compatible transceiver enabling energy-efficient burst-mode data transfers. Use Value: Ioff support permits safe insertion of sensor daughterboards while main SoC remains active - no system reset required. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16245ADGGR | TSSOP-48 package (12.50 mm × 6.10 mm); higher RθJA (67.1°C/W); same electrical specs. | Better suited for space-constrained PCBs where thermal dissipation is managed via copper pour or airflow. | Select when footprint area is prioritized over thermal margin and hand-soldering is not required. |
| SN74ALVC16245DLR | ALVC variant: 1.65–3.6 V VCC, but lower VOLP (0.5 V typ), faster tpd (3.2 ns max at 3.3 V), higher ICC. | Preferred in ultra-low-jitter clock distribution or high-frequency memory bus extensions requiring tighter timing margins. | Choose only if sub-3.5 ns propagation delay is mandatory and increased static current is acceptable. |
Compared with SN74LVC16245ADLR, the TSSOP alternative offers smaller footprint but reduced thermal headroom, while the ALVC version trades higher quiescent power for improved speed and noise performance - neither is pin-compatible without layout revision due to differing SSOP vs TSSOP land patterns.
Availability
SN74LVC16245ADLR is available at Aetrix Electronics and suitable for industrial backplanes, motor drive control interfaces, and wearable health data hubs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for SN74LVC16245ADLR 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 solutions, with decades of expertise in logic interface ICs and industrial-grade reliability validation.
The SN74LVC16245ADLR belongs to TI's Widebus™ family - engineered specifically for high-speed, low-voltage bidirectional bus interfacing in mixed-signal industrial and communications systems.
FAQ
What is the maximum data rate supported by the SN74LVC16245ADLR?
The SN74LVC16245ADLR achieves a maximum propagation delay (tpd) of 4.0 ns at 3.3 V, enabling reliable operation up to ~100 MHz in well-terminated, low-capacitance bus configurations. Actual achievable data rate depends on trace length, load capacitance, and signal integrity design - the device itself does not implement clocked serialization, so it supports asynchronous parallel transfers only.
Does the SN74LVC16245ADLR support hot-swap or live-insertion applications?
Yes, the SN74LVC16245ADLR supports live insertion via its Ioff feature: when VCC = 0 V, input and output leakage remains below ±20 µA even with 5.5 V applied, preventing damaging back-current flow. This allows safe insertion into powered backplanes - provided OE is held high during insertion to maintain 3-state isolation until power stabilizes.
Can the SN74LVC16245ADLR interface a 5 V microcontroller with a 3.3 V FPGA?
Yes - the SN74LVC16245ADLR accepts input voltages up to 5.5 V regardless of VCC (1.65–3.6 V), making it ideal for translating between 5 V MCU GPIOs and 3.3 V FPGA I/O banks. Its outputs swing rail-to-rail within the VCC range, ensuring clean logic levels on both sides without external biasing or resistors.
What is the recommended bypass capacitor configuration for the SN74LVC16245ADLR?
TI recommends placing a 0.1 µF ceramic capacitor near each VCC pin (pins 7, 18, 31, 42) of the SN74LVC16245ADLR, with shortest possible trace length to GND. For enhanced high-frequency noise suppression, a parallel 1 µF tantalum or ceramic capacitor may be added per power domain. Avoid shared vias between bypass caps and signal returns.
How does the SN74LVC16245ADLR handle unused input pins?
All unused control inputs (1DIR, 2DIR, 1OE, 2OE) on the SN74LVC16245ADLR must be tied to VCC or GND - floating inputs cause undefined direction/output states and increased ICC. Unused I/O pins (e.g., A1–A4 if only 12-bit mode is used) may be left unconnected, but tying them to GND or VCC reduces noise susceptibility and EMI.
SN74LVC16245ADLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 48-BSSOP (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 24mA, 24mA
- Voltage - Supply:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-SSOP
SN74LVC16245ADLR FAQ
1.How can I place an order for SN74LVC16245ADLR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC16245ADLR 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 SN74LVC16245ADLR reliable?
The price and inventory of SN74LVC16245ADLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC16245ADLR is usually 5 days.
3.What payment methods are accepted for SN74LVC16245ADLR?
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4.How is shipping managed for SN74LVC16245ADLR?
SN74LVC16245ADLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC16245ADLR 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 SN74LVC16245ADLR?
For technical support, including SN74LVC16245ADLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC16245ADLR requirements.
6.How does Aetrix verify that SN74LVC16245ADLR is sourced from the original manufacturer or authorized distributors?
All SN74LVC16245ADLR 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 SN74LVC16245ADLR meets industry standards.
7.What is the process for return or replacement of SN74LVC16245ADLR?
All SN74LVC16245ADLR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC16245ADLR, 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 SN74LVC16245ADLR part is unused and in its original packaging.
Return procedure for SN74LVC16245ADLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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