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Texas Instruments SN74LVT162245ADLR
- Part No.:
- SN74LVT162245ADLR
- Manufacturer:
- Texas Instruments
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74LVT162245ADLR.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,192
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Product details
Overview
SN74LVT162245ADLR 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 3.3-V and 5-V buses. It features 48-pin SSOP packaging, ±64 mA B-port sink current, integrated 22-Ω series output resistors on A-port, and supports hot insertion via Ioff and power-up 3-state logic.
For engineers reviewing the SN74LVT162245ADLR datasheet, SN74LVT162245ADLR pinout, SN74LVT162245ADLR application, or SN74LVT162245ADLR equivalent, key selection considerations include mixed-mode voltage tolerance (5-V inputs/outputs with 3.3-V VCC), distributed VCC/GND pins for noise reduction, flow-through pin architecture for optimized PCB layout, and guaranteed operation down to 2.7 V for battery-powered systems.
Technical Context
The SN74LVT162245ADLR implements two independent 8-bit transceiver sections (A↔B), each controlled by dedicated DIR and OE signals. Direction control is asynchronous: DIR = LOW enables B→A data flow; DIR = HIGH enables A→B flow; OE = HIGH forces both ports into high-impedance isolation.
Its ABT (Advanced BiCMOS Technology) process delivers TTL-compatible input thresholds (VIH = 2.0 V, VIL = 0.8 V) while operating from a 2.7–3.6 V supply. Input circuits remain active at all times, requiring defined logic levels on all A/B I/Os to prevent excess ICCZ and ensure latch-up immunity (>100 mA per JESD 78 Class II).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply Range | 2.7 V to 3.6 V - supports regulated and unregulated battery operation down to 2.7 V without functional degradation |
| B-Port Sink Current (IOL) | 64 mA max - drives heavy capacitive loads or multiple TTL inputs without external buffers |
| A-Port Output Series Resistance | 22 Ω typical - reduces overshoot/undershoot, eliminating need for external termination resistors |
| Propagation Delay (tPLH/tPHL) | 2.2 ns to 3.9 ns at VCC = 3.3 V - enables high-speed bus bridging up to ~200 MHz effective data rates |
| Hot-Insertion Support | Ioff and power-up 3-state - prevents backflow current and bus contention during live board insertion |
| Input Voltage Tolerance | 0 V to 5.5 V - allows direct interfacing with 5-V logic without level shifters |
| ESD Protection | 2000-V HBM, 200-V MM, 1000-V CDM - exceeds JEDEC standards for robust handling in manufacturing and field use |
Pinout & Package
SN74LVT162245ADLR uses a 48-pin SSOP (Shrink Small Outline Package) with 0.5-mm pitch, 12.4–12.6 mm body length, and 6.0–6.2 mm width. The package features gull-wing leads, exposed thermal pad not present, and RoHS-compliant NiPdAu lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input (per 8-bit section) | LOW = B→A data flow; HIGH = A→B data flow; asynchronous, no internal latching |
| 1OE, 2OE | Output-enable input (per 8-bit section) | HIGH = high-impedance state for corresponding port; LOW = enabled output drivers |
| 1A1–1A8, 2A1–2A8 | A-port data I/Os (dual-octal) | 3.3-V logic interface with 22-Ω series resistance; tolerate 5-V inputs |
| 1B1–1B8, 2B1–2B8 | B-port data I/Os (dual-octal) | 3.3-V outputs with ±64 mA drive capability; accept 5-V inputs |
| VCC (Pins 7, 18, 29, 40) | Power supply | Distributed across package to minimize simultaneous switching noise (SSN) |
| GND (Pins 4, 11, 22, 33, 44) | Ground reference | Five GND pins strategically placed to reduce ground bounce and improve signal integrity |
Key Features
| Feature | Design Value |
|---|---|
| Mixed-mode voltage interface | 5-V-tolerant inputs/outputs with 3.3-V VCC enables seamless interconnection between legacy 5-V and modern low-voltage subsystems |
| Integrated output series resistance | 22-Ω on-chip A-port resistors eliminate external termination components and reduce BOM count and layout area |
| Flow-through pin architecture | Input and output pins arranged on opposite sides of package to simplify layer routing and minimize trace crossovers |
| Distributed power/ground network | Four VCC and five GND pins reduce impedance in power delivery path, lowering ground bounce (VOLP < 0.8 V @ 3.3 V) |
| Hot-insertion readiness | Ioff circuitry disables outputs when VCC = 0 V; power-up 3-state prevents bus conflicts during power sequencing |
Applications
| Industrial PLC Backplane Interface | Automotive Body Control Module (BCM) Gateway |
|---|---|
Use Scenario: Bridging legacy 5-V sensor/actuator buses to a 3.3-V microcontroller-based main control unit in programmable logic controller chassis. IC Role / Device Role / Timing Role: Bidirectional level-translating bus transceiver enabling real-time I/O data exchange without external level shifters or buffers. Use Value: Eliminates discrete level-shifting components, reduces PCB space by >15 mm² per channel, and maintains timing margins with sub-4 ns propagation delay. |
Use Scenario: Interfacing 5-V CAN transceiver peripherals and LIN slave nodes to a 3.3-V ARM Cortex-M7 domain controller in vehicle body electronics. IC Role / Device Role / Timing Role: Asynchronous 16-bit bus isolator with direction control, supporting concurrent diagnostic and control traffic across voltage domains. Use Value: Enables single-chip bridging of heterogeneous automotive buses while meeting ISO 11898-2 ESD requirements via built-in 2000-V HBM protection. |
| Medical Patient Monitor Data Acquisition | Test & Measurement Equipment Signal Routing |
Use Scenario: Connecting analog front-end ADCs and DACs (5-V powered) to a low-power 3.3-V FPGA-based processing engine in portable diagnostic devices. IC Role / Device Role / Timing Role: Low-noise, high-drive-strength transceiver ensuring clean digital waveform integrity during high-resolution sensor sampling. Use Value: Integrated 22-Ω series resistors suppress edge ringing on 100+ MHz sample clocks, improving ENOB by ≥0.3 bits in 16-bit acquisition paths. |
Use Scenario: Reconfigurable signal path routing between 5-V DUT interfaces and 3.3-V test instrumentation ASICs in automated benchtop testers. IC Role / Device Role / Timing Role: Hot-pluggable bus switch enabling safe reconfiguration of measurement channels without powering down the system. Use Value: Ioff and power-up 3-state guarantee zero current injection during module swap, preventing damage to sensitive calibration references and precision DACs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit bidirectional bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC16245ADGGR | Lower drive strength (24 mA B-port sink), no integrated series resistors, 1.65–3.6 V VCC range | Better suited for ultra-low-power, lower-speed (<50 MHz) applications where external termination is acceptable | Select when cost sensitivity outweighs need for 64 mA drive or built-in termination |
| SN74ALVC16245DLR | Higher speed (tPLH = 1.9 ns typ), same 48-pin SSOP, but only 3.3-V tolerant (not 5-V input capable) | Requires external level shifters for 5-V bus interfacing; optimized for pure 3.3-V high-speed backplanes | Choose only if system operates exclusively at 3.3 V and demands sub-2 ns propagation |
Compared with SN74LVC16245ADGGR and SN74ALVC16245DLR, the SN74LVT162245ADLR uniquely combines 5-V input tolerance, 64 mA drive, and on-die 22-Ω termination-making it the sole option among these three for robust, component-minimized 3.3/5-V bus bridging in industrial and automotive environments.
Availability
SN74LVT162245ADLR is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive BCM gateways, medical patient monitor data acquisition, and test equipment signal routing requiring stable component supply and long-term manufacturability.
Supply support for SN74LVT162245ADLR 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 over 50 years of innovation in high-reliability interface solutions.
The SN74LVT162245ADLR belongs to TI's Widebus™ family of ABT transceivers, engineered specifically for mixed-voltage system integration in industrial automation, automotive electronics, and communications infrastructure where signal integrity and interoperability across voltage domains are critical.
FAQ
What is the maximum operating temperature range for the SN74LVT162245ADLR?
The SN74LVT162245ADLR is rated for operation from –40°C to +85°C ambient temperature. This industrial-grade temperature range is validated per TI's recommended operating conditions and ensures reliable performance in demanding environments such as factory automation controllers and automotive under-hood modules. The device's thermal impedance (θJA = 63°C/W in DL package) supports this rating under standard PCB copper pour conditions.
Does the SN74LVT162245ADLR require external pull-up resistors on OE or DIR pins?
No external pull-up resistors are required on OE or DIR for normal operation. However, to guarantee high-impedance state when VCC is above 1.5 V during power-up, TI recommends tying OE to VCC through a pullup resistor - minimum value determined by the driver's current-sinking capability. DIR has no such requirement and may be driven directly from logic sources. The SN74LVT162245ADLR includes internal circuitry that places outputs in high-Z when VCC is between 0 and 1.5 V.
Can the SN74LVT162245ADLR safely interface with 5-V CMOS logic inputs?
Yes, the SN74LVT162245ADLR supports 5-V-tolerant inputs on both A and B ports, with VI absolute maximum rating of 7 V and recommended input voltage up to 5.5 V. Its input structure handles 5-V signals while powered from 3.3 V VCC, making it suitable for direct connection to 5-V CMOS outputs without level-shifting circuitry. This capability is confirmed in the "Recommended Operating Conditions" table of the official datasheet SCBS714D.
What is the purpose of the multiple VCC and GND pins on the SN74LVT162245ADLR?
The SN74LVT162245ADLR features four VCC and five GND pins distributed across the 48-pin SSOP package to minimize high-speed switching noise and ground bounce. This layout reduces power delivery impedance, improves signal integrity for 16-bit parallel buses, and lowers VOLP (output ground bounce) to <0.8 V at VCC = 3.3 V. The distributed configuration is essential for maintaining timing margins in systems with fast edge rates and high fanout.
Is the SN74LVT162245ADLR pin-compatible with other 48-pin transceivers like the SN74LVC16245A?
No, the SN74LVT162245ADLR is not pin-compatible with SN74LVC16245A or SN74ALVC16245A. Although all three use 48-pin SSOP packages, their pinouts differ significantly - particularly in VCC/GND placement, DIR/OE assignment, and I/O grouping. The SN74LVT162245ADLR uses a flow-through architecture with A-ports on one side and B-ports on the opposite side, whereas LVC variants follow different I/O mapping. PCB redesign is required for substitution.
SN74LVT162245ADLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVT
- 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:
- 12mA, 12mA; 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
SN74LVT162245ADLR FAQ
1.How can I place an order for SN74LVT162245ADLR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVT162245ADLR 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 SN74LVT162245ADLR reliable?
The price and inventory of SN74LVT162245ADLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVT162245ADLR is usually 5 days.
3.What payment methods are accepted for SN74LVT162245ADLR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVT162245ADLR transactions.
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4.How is shipping managed for SN74LVT162245ADLR?
SN74LVT162245ADLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVT162245ADLR 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 SN74LVT162245ADLR?
For technical support, including SN74LVT162245ADLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVT162245ADLR requirements.
6.How does Aetrix verify that SN74LVT162245ADLR is sourced from the original manufacturer or authorized distributors?
All SN74LVT162245ADLR 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 SN74LVT162245ADLR meets industry standards.
7.What is the process for return or replacement of SN74LVT162245ADLR?
All SN74LVT162245ADLR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVT162245ADLR, 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 SN74LVT162245ADLR part is unused and in its original packaging.
Return procedure for SN74LVT162245ADLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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