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Texas Instruments SN74ABT162245DLR
- Part No.:
- SN74ABT162245DLR
- Manufacturer:
- Texas Instruments
- Package:
- 48-BSSOP (0.295", 7.50mm Width)
- Datasheet:
-
SN74ABT162245DLR.pdf
- Description:
- IC TXRX NON-INVERT 5.5V 48SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,387
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Product details
Overview
SN74ABT162245DLR from Texas Instruments is a 16-bit noninverting 3-state transceiver in SSOP-48 package, designed for synchronous bidirectional data bus communication between A and B buses. It supports ±12 mA A-port drive, 64 mA B-port sink capability, Ioff partial-power-down protection, and features integrated 25-Ω series output resistors to suppress overshoot/undershoot in high-speed digital systems.
For engineers reviewing the SN74ABT162245DLR datasheet, SN74ABT162245DLR pinout, SN74ABT162245DLR application, or SN74ABT162245DLR equivalent, key selection criteria include direction-control (DIR) and output-enable (OE) logic timing, bus-isolation behavior during power sequencing, thermal performance (θJA = 63°C/W), and compatibility with 5-V TTL-level systems requiring robust noise immunity and ground-bounce suppression.
Technical Context
This device implements dual 8-bit or unified 16-bit flow-through transceiver architecture with independent DIR/OE controls per 8-bit section. Its Ioff circuitry actively disables outputs when VCC = 0 V, preventing backflow current during partial power-down - critical for hot-swap and mixed-voltage system designs.
Each A-port output integrates a matched 25-Ω series resistor; B-port outputs deliver higher drive strength (up to 64 mA sink) without external termination. Distributed VCC/GND pins and ground-bounce specification (VOLP < 1 V at 5 V, 25°C) are optimized for low-noise PCB layout in dense synchronous bus environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 4.5 V to 5.5 V - ensures compatibility with standard 5-V TTL logic rails and margin against supply droop. |
| A-port output drive | ±12 mA - sufficient to directly drive multiple TTL loads without external buffers or pull-ups. |
| B-port sink current | 64 mA max - enables robust interfacing with legacy bus loads and high-capacitance traces. |
| Propagation delay | 1 ns to 4.9 ns (A→B), 1.5 ns to 5.2 ns (B→A) - supports >100 MHz bus clocking with tight timing margins. |
| Ioff leakage | ±100 µA at VCC = 0 V - guarantees safe isolation during power sequencing and prevents backfeeding into powered subsystems. |
| Thermal resistance θJA | 63°C/W (DL package) - defines maximum power dissipation limit (≈0.4 W at 85°C ambient) for continuous operation. |
| ESD rating | 2000-V HBM, 200-V MM - exceeds JEDEC standards for handling and board-level reliability in industrial assembly. |
Pinout & Package
SN74ABT162245DLR uses a 48-pin SSOP (Shrink Small Outline Package) with 0.5-mm pitch, 12.6 mm × 6.2 mm body size, and 1.2-mm max height. Pin 1 is located at top-left corner with molded index mark; leads are gull-wing, NIPDAU-plated, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1DIR, 2DIR | Direction control input (per 8-bit section) | Determines data flow direction: DIR = L → B-to-A; DIR = H → A-to-B; enables independent bus arbitration. |
| 1OE, 2OE | Output enable input (per 8-bit section) | Active-low: OE = L enables transceiver; OE = H forces all outputs to high-impedance state for bus isolation. |
| 1A1–1A8, 2A1–2A8 | A-side data I/O terminals | Noninverting inputs/outputs connected to local bus; each includes 25-Ω series resistor for controlled edge rates. |
| 1B1–1B8, 2B1–2B8 | B-side data I/O terminals | Noninverting inputs/outputs connected to remote bus; higher drive strength supports longer trace runs. |
| VCC (pins 7, 20, 33, 46) | Power supply | Distributed VCC pins minimize simultaneous switching noise and reduce IR drop across PCB power planes. |
| GND (pins 4, 11, 24, 37, 44) | Ground reference | Five GND pins provide low-inductance return paths, critical for suppressing ground bounce (VOLP < 1 V). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 25-Ω series resistors on A-port outputs | Eliminates need for external termination resistors, reducing BOM count and PCB area while controlling signal integrity. |
| Ioff partial-power-down support | Prevents damaging current flow when VCC = 0 V, enabling safe insertion/removal in live backplane or modular systems. |
| Flow-through pin architecture | Input and output pins aligned on opposite sides of package - simplifies layer routing and minimizes trace crossovers. |
| Distributed VCC/GND pin placement | Reduces high-frequency switching noise by lowering power loop inductance and improving decoupling effectiveness. |
| Latch-up immunity >500 mA | Meets JESD17 requirements - ensures robust operation under transient overvoltage or ESD stress conditions. |
Applications
| Industrial PLC Backplane Interface | Automotive Diagnostic Bus Bridge |
|---|---|
|
Use Scenario: Isolating CPU subsystem from field I/O modules in programmable logic controllers using separate 5-V domains. IC Role / Device Role / Timing Role: Bidirectional level-shifting transceiver managing synchronous data exchange between processor and isolated I/O cards. Use Value: Ioff protection prevents backfeeding during module hot-swap; distributed power pins suppress noise in electrically noisy factory environments. |
Use Scenario: Bridging microcontroller UART lines to vehicle OBD-II diagnostic port with strict ESD and EMC requirements. IC Role / Device Role / Timing Role: Direction-controlled bus buffer enabling half-duplex communication between host MCU and external scan tools. Use Value: 2000-V HBM ESD rating meets ISO 10605 automotive test levels; 25-Ω series resistors dampen reflections on long cable runs. |
| Test Equipment Data Acquisition Module | Legacy Memory Expansion Interface |
|
Use Scenario: Interfacing FPGA-based acquisition logic to parallel ADC/DAC arrays with shared 5-V data bus. IC Role / Device Role / Timing Role: High-speed 16-bit transceiver synchronizing sample data transfer between FPGA fabric and analog front-end. Use Value: 1–5 ns propagation delay enables precise timing alignment; 64 mA B-port sink drives heavy capacitive loads of multi-channel converters. |
Use Scenario: Expanding address/data bus of legacy microprocessor (e.g., 80C188) to interface with external SRAM or EPROM banks. IC Role / Device Role / Timing Role: Noninverting 3-state bus transceiver providing bidirectional data path between CPU and memory peripherals. Use Value: Flow-through pinout simplifies PCB layout for narrow-pitch memory sockets; latch-up immunity ensures reliability in unregulated power environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit bidirectional transceiver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC162245DGGR | 3.3-V only operation (1.65–3.6 V), lower drive (24 mA B-port), no integrated series resistors. | Suitable for modern low-voltage FPGAs or ARM SoCs; requires external termination for signal integrity. | Select when migrating to 3.3-V systems and external impedance control is acceptable. |
| SN74ABT16245DLR | Same family, identical pinout and function but lacks A-port 25-Ω resistors; higher A-port drive (±32 mA). | Better suited for driving heavier capacitive loads directly; requires external series resistors if overshoot control is needed. | Choose when maximum A-port current is required and board-level termination is preferred. |
Compared with SN74LVC162245DGGR, SN74ABT162245DLR delivers higher noise immunity and built-in signal conditioning for 5-V legacy systems; versus SN74ABT16245DLR, it trades peak drive strength for simplified layout via integrated A-port termination - reducing component count and improving signal fidelity on high-speed buses.
Availability
SN74ABT162245DLR is available at Aetrix Electronics and suitable for industrial automation, automotive diagnostics, and test equipment applications requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for SN74ABT162245DLR 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 expertise in high-reliability interface ICs and industrial-grade components.
The SN74ABT162245DLR belongs to TI's Widebus™ family of advanced bus-interface devices, engineered specifically for noise-immune, high-speed synchronous data transfer in demanding industrial and automotive control systems.
FAQ
What is the operating temperature range for SN74ABT162245DLR?
The SN74ABT162245DLR is rated for operation from −40°C to +85°C ambient temperature. This industrial-grade range ensures reliable performance in factory automation, motor control, and outdoor instrumentation environments where thermal cycling and extended temperature exposure occur. The DL package's θJA of 63°C/W supports this range under typical power dissipation conditions.
Does SN74ABT162245DLR support hot-swap or partial-power-down operation?
Yes, SN74ABT162245DLR includes Ioff circuitry that disables outputs when VCC = 0 V, limiting current backflow to ±100 µA. This feature enables safe insertion and removal in live backplanes or modular systems where subsystems power up/down independently - a key requirement for telecom shelf management and industrial rack-mounted controllers.
How does the integrated 25-Ω series resistor on the A-port affect signal integrity?
The integrated 25-Ω series resistor on each SN74ABT162245DLR A-port output damps signal reflections and reduces overshoot/undershoot without requiring external components. Measured VOLP < 1 V at 5 V confirms effective ground-bounce suppression, making it ideal for high-speed 5-V bus interfaces where trace impedance matching is critical and board space is constrained.
Can SN74ABT162245DLR be used as two independent 8-bit transceivers?
Yes, SN74ABT162245DLR contains two fully independent 8-bit sections (1A/1B and 2A/2B), each with dedicated DIR and OE controls. This allows concurrent bidirectional communication on separate buses - for example, isolating memory and peripheral interfaces on the same PCB - without timing conflicts or shared control logic overhead.
What is the maximum data rate supported by SN74ABT162245DLR?
Based on propagation delays of 1–5 ns and specified input transition rates (10 ns/V), SN74ABT162245DLR supports reliable operation at bus clock frequencies exceeding 100 MHz in well-designed PCB layouts. Real-world throughput depends on load capacitance, trace length, and termination - but the device's distributed VCC/GND pins and low VOLP ensure stable timing margins even under heavy switching conditions.
SN74ABT162245DLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74ABT
- 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:
- 4.5V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-SSOP
SN74ABT162245DLR FAQ
1.How can I place an order for SN74ABT162245DLR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74ABT162245DLR 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 SN74ABT162245DLR reliable?
The price and inventory of SN74ABT162245DLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74ABT162245DLR is usually 5 days.
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SN74ABT162245DLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74ABT162245DLR 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 SN74ABT162245DLR?
For technical support, including SN74ABT162245DLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74ABT162245DLR requirements.
6.How does Aetrix verify that SN74ABT162245DLR is sourced from the original manufacturer or authorized distributors?
All SN74ABT162245DLR 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 SN74ABT162245DLR meets industry standards.
7.What is the process for return or replacement of SN74ABT162245DLR?
All SN74ABT162245DLR units undergo pre-shipment inspection (PSI). If there is an issue with SN74ABT162245DLR, 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 SN74ABT162245DLR part is unused and in its original packaging.
Return procedure for SN74ABT162245DLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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