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Texas Instruments SN74LVT162245ADL
- Part No.:
- SN74LVT162245ADL
- Manufacturer:
- Texas Instruments
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74LVT162245ADL.pdf
- Description:
- IC TXRX NON-INVERT 3.6V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:132
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Product details
Overview
SN74LVT162245ADL 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 (DL) packaging, ±12 mA A-port drive capability, integrated 22-Ω series output resistors, and supports hot insertion via Ioff and power-up 3-state logic.
For engineers reviewing the SN74LVT162245ADL datasheet, SN74LVT162245ADL pinout, SN74LVT162245ADL application, or SN74LVT162245ADL equivalent, key selection considerations include mixed-mode voltage tolerance (5-V inputs with 3.3-V VCC), directional control per octet (1DIR/2DIR), independent output-enable (1OE/2OE), and guaranteed operation down to 2.7 V supply.
Technical Context
The SN74LVT162245ADL implements two independent 8-bit transceiver sections-each with dedicated DIR and OE controls-enabling simultaneous or isolated A↔B data flow. Its ABT (Advanced BiCMOS Technology) architecture delivers TTL-compatible output levels while operating from a 3.3-V supply, with input thresholds compatible with both 3.3-V and 5-V logic families.
Directional control is edge-independent and level-sensitive: when OE is low, the port selected by DIR (A→B if DIR = HIGH; B→A if DIR = LOW) drives its outputs; both ports enter high-impedance when OE is high. Input circuits remain active at all times, requiring defined logic states on unused I/Os to prevent excess ICCZ.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply Range | 2.7 V to 3.6 V - enables stable operation under unregulated battery or marginally regulated 3.3-V rails |
| A-Port Output Drive | ±12 mA - sufficient to directly drive standard TTL loads without external termination |
| B-Port Output Drive | ±24 mA (min) at VCC = 3 V - supports heavier capacitive loads and longer traces in backplane or motherboard interconnects |
| Input Voltage Tolerance | Up to 5.5 V - allows direct connection to 5-V systems without level-shifting circuitry |
| Propagation Delay | 2.2 ns (typ, A→B, VCC = 3.3 V) - ensures timing compatibility with high-speed synchronous buses up to ~200 MHz |
| Hot-Insertion Support | Ioff ≤ ±100 µA at VCC = 0 - prevents backflow current during live board insertion into powered backplanes |
| ESD Protection | 2000-V HBM, 200-V MM, 1000-V CDM - meets industrial-grade robustness requirements for handling and assembly |
Pinout & Package
SN74LVT162245ADL uses a 48-pin SSOP (Shrink Small Outline Package) with 0.5-mm pitch, 12.6 mm × 6.2 mm body, and 1.2 mm max height. Pin 1 is marked by a beveled corner and located at top-left when viewed from top with marking side up.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input (per octet) | High = A→B data flow; Low = B→A data flow - enables independent bidirectional control of each 8-bit channel |
| 1OE, 2OE | Output-enable input (per octet) | Low = enable outputs; High = place both A and B ports in high-impedance - provides granular bus isolation |
| 1A1–1A8, 2A1–2A8 | A-port data I/Os | Active inputs always; outputs enabled only when corresponding OE = LOW and DIR selects A→B - A-port drivers include built-in 22-Ω series resistors |
| 1B1–1B8, 2B1–2B8 | B-port data I/Os | Active inputs always; outputs enabled only when corresponding OE = LOW and DIR selects B→A - B-port outputs support higher sink current (up to 64 mA) |
| VCC | Power supply | Distributed across multiple pins (e.g., pins 7, 18, 29, 40) - reduces switching noise and improves power integrity for high-speed operation |
| GND | Ground reference | Distributed across 8 pins (e.g., pins 4, 11, 16, 27, 32, 37, 44, 47) - minimizes ground bounce and enhances signal integrity |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 22-Ω series output resistors (A-port) | Eliminates need for external source-series termination, reducing BOM count and PCB area for point-to-point or short-bus applications |
| Mixed-mode voltage interface | Accepts 5-V inputs while powered from 3.3-V VCC - enables seamless bridging between legacy 5-V logic and modern low-voltage subsystems |
| Flow-through pin architecture | A- and B-port signals enter and exit on opposite sides of package - simplifies PCB routing and reduces layer count in dense layouts |
| Power-up 3-state and Ioff protection | Outputs remain high-Z during power ramping and when VCC = 0 - prevents bus contention and backdrive damage in hot-swap systems |
| Distributed VCC/GND pinning | 12 total power/ground pins interleaved across package - lowers effective power loop inductance and suppresses simultaneous switching noise |
Applications
| Industrial Backplane Interconnect | Automotive Body Control Module |
|---|---|
Use Scenario: Bidirectional data exchange between 3.3-V microcontroller and 5-V sensor cluster across a 20-cm backplane trace. IC Role / Device Role / Timing Role: Level-translating bus transceiver managing direction and isolation per CAN/LIN subnetwork segment. Use Value: Eliminates discrete level shifters and pull-up networks; 2.2 ns propagation delay preserves timing margin in 50-MHz control loops. |
Use Scenario: Isolating MCU GPIOs from 5-V lighting drivers and relay interfaces in a centralized body controller. IC Role / Device Role / Timing Role: Hot-pluggable I/O expander buffer enabling safe field-replacement of module without powering down main ECU. Use Value: Ioff < ±100 µA prevents backfeed into unpowered MCU domains; 2000-V HBM withstands automotive ESD events. |
| Telecom Line Card Interface | Test Equipment Signal Routing |
Use Scenario: Multiplexing between 3.3-V FPGA configuration bus and 5-V legacy PHY registers on a modular line card. IC Role / Device Role / Timing Role: Dual-channel direction-controlled transceiver synchronizing register reads/writes across voltage domains. Use Value: Independent 1DIR/2DIR and 1OE/2OE allow concurrent A→B and B→A transfers without arbitration overhead. |
Use Scenario: Reconfigurable signal path switching in automated test equipment connecting DUT I/Os to measurement instruments. IC Role / Device Role / Timing Role: Programmable bidirectional bus gate enabling dynamic re-routing of digital stimulus/response channels. Use Value: Flow-through pinout minimizes trace skew; ±24 mA B-port drive ensures clean edges into 50-Ω instrument inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bus transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC162245ADL | Lower drive strength (±24 mA B-port), no integrated 22-Ω resistors, 1.65–3.6 V VCC range | Suitable for lower-power, cost-sensitive designs where external termination is acceptable | Select when system-level noise budget allows external resistors and 3.3-V-only interfacing suffices |
| SN74ALVCH162245DL | Higher speed (1.8 ns typ A→B), 1.65–3.6 V VCC, no hot-insertion support (Ioff not specified) | Better for high-frequency memory or FPGA interconnect where hot-swap is not required | Choose for maximum timing margin in 200+ MHz applications where Ioff protection is secondary |
Compared with SN74LVC162245ADL and SN74ALVCH162245DL, the SN74LVT162245ADL uniquely combines integrated A-port termination, 5-V tolerant inputs, and certified hot-insertion capability-making it optimal for industrial backplanes and automotive modules requiring robust mixed-voltage interoperability and live maintenance.
Availability
SN74LVT162245ADL is available at Aetrix Electronics and suitable for industrial backplane interconnect, automotive body control modules, telecom line card interfaces, and test equipment signal routing requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for SN74LVT162245ADL 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 logic and interface solutions.
The SN74LVT162245ADL belongs to TI's Widebus™ family of advanced bus transceivers, engineered specifically for robust, low-noise bidirectional communication between mixed-voltage digital subsystems in industrial, automotive, and communications infrastructure.
FAQ
What is the minimum VCC voltage required for functional operation of the SN74LVT162245ADL?
The SN74LVT162245ADL is fully specified to operate down to 2.7 V VCC across the full industrial temperature range (–40°C to 85°C). Below 2.7 V, outputs enter high-impedance mode, but the device remains electrically safe; operation below 2.7 V is not guaranteed per datasheet specifications. The SN74LVT162245ADL maintains valid logic thresholds and drive strength throughout this range.
Can the SN74LVT162245ADL safely interface a 5-V microcontroller with a 3.3-V FPGA?
Yes - the SN74LVT162245ADL accepts 5-V inputs on both A and B ports while operating from a 3.3-V VCC, making it ideal for bidirectional interfacing between 5-V and 3.3-V logic domains. Its 5.5-V absolute maximum input rating and TTL-compatible VIH/VIL thresholds ensure reliable recognition of 5-V signals without external level shifters. This capability is explicitly validated for the SN74LVT162245ADL in TI's SCBS714D datasheet.
Does the SN74LVT162245ADL support hot insertion, and how is it implemented?
Yes, the SN74LVT162245ADL supports hot insertion via two complementary mechanisms: Ioff circuitry limits current to ±100 µA when VCC = 0, preventing damaging backflow; and power-up 3-state logic forces outputs into high-impedance during power ramping (VCC < 1.5 V). These features are production-tested and documented in the Absolute Maximum Ratings and Electrical Characteristics tables of the SN74LVT162245ADL datasheet.
What is the purpose of the 22-Ω series resistors on the A-port outputs of the SN74LVT162245ADL?
The 22-Ω series resistors integrated into the A-port outputs of the SN74LVT162245ADL serve to damp signal reflections and reduce overshoot/undershoot on transmission lines, particularly in point-to-point or short-bus configurations. They eliminate the need for external source-series termination resistors, simplifying layout and reducing BOM count. This feature is unique to the LVT family and confirmed in the SN74LVT162245ADL datasheet Feature list.
How does the SN74LVT162245ADL handle unused input pins?
All unused data I/O pins (A or B ports) on the SN74LVT162245ADL must be held at a defined logic HIGH or LOW - preferably tied to VCC or GND - to prevent excess ICC and ICCZ current and ensure predictable operation. Floating inputs are explicitly prohibited per TI's SCBA004 application report referenced in the SN74LVT162245ADL datasheet. Direction and enable inputs (DIR/OE) follow the same rule.
SN74LVT162245ADL 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:
- 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
SN74LVT162245ADL FAQ
1.How can I place an order for SN74LVT162245ADL through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVT162245ADL 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 SN74LVT162245ADL reliable?
The price and inventory of SN74LVT162245ADL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVT162245ADL is usually 5 days.
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SN74LVT162245ADL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVT162245ADL 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 SN74LVT162245ADL?
For technical support, including SN74LVT162245ADL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVT162245ADL requirements.
6.How does Aetrix verify that SN74LVT162245ADL is sourced from the original manufacturer or authorized distributors?
All SN74LVT162245ADL 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 SN74LVT162245ADL meets industry standards.
7.What is the process for return or replacement of SN74LVT162245ADL?
All SN74LVT162245ADL units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVT162245ADL, 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 SN74LVT162245ADL part is unused and in its original packaging.
Return procedure for SN74LVT162245ADL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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