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NXP Semiconductors P82B96TD,112
- Part No.:
- P82B96TD,112
- Manufacturer:
- NXP Semiconductors
- Category:
- Signal Buffers, Repeaters, Splitters
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
P82B96TD,112.pdf
- Description:
- IC REDRIVER I2C 2CH 400KHZ 8SO
- Quantity:
- Payment:
- Shipping:
Inventory:45,181
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Product details
Overview
P82B96TD,112 from NXP Semiconductors is a bipolar dual bidirectional I²C-bus buffer IC that isolates local and remote I²C segments while supporting voltage-level translation (2 V to 15 V), 400 kHz operation over 20 m cables, and 60 mA sink capability on Tx/Ty outputs. It enables robust interconnection between standard I²C-bus nodes and higher-voltage, low-impedance, or galvanically isolated buses.
For engineers reviewing the P82B96TD,112 datasheet, P82B96TD,112 pinout, P82B96TD,112 application, or P82B96TD,112 equivalent, this device is selected for long-distance I²C extension, SMBus interface compatibility, opto-isolated node bridging, and mixed-voltage system integration where capacitance isolation and latch-free operation are critical.
Technical Context
The P82B96TD,112 implements two independent bidirectional signal paths - each with separate forward (Sx→Tx, Sy→Ty) and reverse (Rx→Sx, Ry→Sy) logic channels - enabling true non-latching bus buffering without direction control pins. Its Sx/Sy inputs maintain I²C-compliant logic thresholds independent of VCC, while Rx/Ry inputs reference 42 %–58 % of VCC for reliable level detection.
Each Tx/Ty output is an open-collector driver capable of sinking ≥60 mA statically and ~100 mA dynamically, allowing direct connection to pull-ups up to 15 V and driving high-capacitance or low-impedance lines. The effective input capacitance per pin is <7 pF across all operating conditions, including VCC = 0 V, ensuring minimal bus loading and fail-safe behavior during supply loss.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 2 V to 15 V - supports wide-range host and remote bus voltages without level-shifter circuitry |
| I²C-bus side input threshold | Independent of VCC: VIH(min) = 650 mV, VIL(max) = 600 mV - ensures compatibility with standard 3.3 V/5 V I²C masters/slaves |
| Tx/Ty sink current | ≥60 mA static - drives low-impedance lines or long cables with enhanced noise immunity |
| Bus capacitance isolation | 400 pF on Sx/Sy side, 4000 pF on Tx/Ty side - decouples local bus loading from extended remote segments |
| Propagation delay | 70 ns (falling), 90 ns (rising) Sx→Tx - preserves timing margins in 400 kHz Fast-mode systems |
| Input capacitance | <7 pF per pin - negligible impact on rise time, even with VCC unpowered |
| ESD protection | 3500 V HBM, 1000 V CDM - meets industrial-grade reliability requirements |
| Operating temperature | −40 °C to +85 °C - qualified for industrial ambient environments |
Pinout & Package
Package: SO8 (SOT96-1), plastic small outline package, 8 leads, 3.9 mm body width.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Sx) | I²C-bus data (SDA) or clock (SCL) interface | Local-side bidirectional I²C signal; logic thresholds independent of VCC; max 15 V rating |
| 2 (VCC) | Positive supply voltage | Power rail for internal logic and Rx/Ry input thresholds; also powers Tx/Ty pull-down drivers |
| 3 (Rx) | Remote receive input | Unidirectional input sensing buffered bus state; threshold = 0.42–0.58 × VCC |
| 4 (GND) | Negative supply reference | Common ground reference for all signals and internal circuitry |
| 5 (Ty) | Remote transmit output (SCL path) | Open-collector output for buffered SCL; sinks ≥60 mA; connects to external pull-up ≤15 V |
| 6 (Ry) | Remote receive input (SCL path) | Unidirectional input for remote SCL feedback; same VCC-referenced threshold as Rx |
| 7 (Sy) | I²C-bus data (SDA) or clock (SCL) interface | Second local-side I²C signal; identical function and specs to Sx |
| 8 (Tx) | Remote transmit output (SDA path) | Open-collector output for buffered SDA; identical specs and drive strength to Ty |
Key Features
| Feature | Design Value |
|---|---|
| Latch-free bipolar architecture | Eliminates risk of bus lockup during voltage transients or hot-plug events; no external reset required |
| Capacitance isolation | 400 pF local / 4000 pF remote separation enables >20 m cable runs without violating I²C bus capacitance limits |
| Galvanic isolation readiness | Dedicated Tx/Rx and Ty/Ry pairs simplify optocoupler or transformer-based isolation without added logic |
| VCC-fail safe operation | All I/Os become high-impedance when VCC = 0 V; no bus contention or leakage into unpowered systems |
| Mixed-voltage interoperability | Sx/Sy side operates at standard I²C levels (e.g., 3.3 V/5 V), while Tx/Ty side interfaces to 15 V or SMBus (350 µA) buses |
Applications
| Industrial Sensor Hub Interfacing | I²C-to-SMBus Bridge |
|---|---|
|
Use Scenario: Connecting multiple 3.3 V I²C sensors to a central controller located 15 m away via twisted-pair wiring in factory automation. IC Role / Device Role / Timing Role: P82B96TD,112 buffers and isolates SDA/SCL, translating local 3.3 V logic to 12 V differential signaling while maintaining 400 kHz timing integrity. Use Value: Enables noise-immune communication over long distances without violating I²C 400 pF capacitance limit on the controller side. |
Use Scenario: Integrating legacy SMBus 350 µA-compliant power management ICs with a modern 5 V I²C microcontroller. IC Role / Device Role / Timing Role: P82B96TD,112 acts as a protocol-transparent voltage/current translator, matching SMBus sink strength and logic thresholds to I²C bus requirements. Use Value: Eliminates need for discrete resistor networks or active level shifters while preserving full I²C timing compliance. |
| Opto-Isolated I²C Node Extension | Long-Distance DDC Bus Extension |
|
Use Scenario: Adding galvanic isolation between a PC motherboard's DDC bus and an external display enclosure using PC817 optocouplers. IC Role / Device Role / Timing Role: P82B96TD,112 splits SDA/SCL into unidirectional Tx/Rx and Ty/Ry signals compatible with optocoupler input/output stages. Use Value: Supports 400 kHz DDC communication across isolation barrier without clock stretching or protocol modification. |
Use Scenario: Extending Display Data Channel (DDC) bus from GPU to monitor over 10 m cable in AV equipment with EMI-sensitive analog video paths. IC Role / Device Role / Timing Role: P82B96TD,112 buffers and isolates DDC SDA/SCL, reducing capacitive coupling into RGB video lines while sustaining sub-100 kHz timing. Use Value: Prevents video noise injection and eliminates ground-loop artifacts without requiring shielded I²C cabling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar I²C bus buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCA9515DP,118 | CMOS process; lower supply current (1.5 mA vs. 2.5 mA); max VCC = 5.5 V; no 15 V support | Restricted to 3.3 V/5 V systems; lacks high-voltage drive and SMBus compatibility | Select PCA9515DP,118 only for low-power, single-supply 5 V designs where extended voltage range is unnecessary |
| P82B96DP,118 | Identical electrical specs and pinout; TSSOP8 package (3 mm width) instead of SO8 (3.9 mm) | Same functionality but requires PCB layout change for footprint; thermal resistance differs (Rth(j-pcb) = 110 K/W vs. 127 K/W) | Choose P82B96DP,118 for space-constrained boards where TSSOP8 footprint is preferred and thermal margin allows |
Compared with PCA9515DP,118 and P82B96DP,118, the P82B96TD,112 uniquely supports 2 V–15 V operation, 60 mA output drive, and fail-safe VCC-off behavior - making it the only option for mixed-voltage, long-cable, or industrial isolation use cases requiring robustness beyond standard CMOS buffers.
Availability
P82B96TD,112 is available at Aetrix Electronics and suitable for industrial sensor interfacing, SMBus protocol bridging, opto-isolated I²C extension, and long-distance DDC bus applications requiring stable component supply and guaranteed lifecycle continuity.
Supply support for P82B96TD,112 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
NXP Semiconductors is a global semiconductor company specializing in secure connectivity solutions for automotive, industrial, and IoT applications, with leadership in interface, power management, and embedded processing technologies.
The P82B96TD,112 belongs to NXP's I²C-bus interface and system-level buffer product line, designed specifically to solve signal integrity, voltage translation, and physical layer extension challenges in multi-node, mixed-voltage embedded systems.
FAQ
What is the maximum cable length supported by P82B96TD,112 at 400 kHz?
The P82B96TD,112 supports 400 kHz operation over at least 20 meters of wire under typical conditions, as verified in Application Note AN10148. Performance beyond 20 m depends on cable capacitance, pull-up resistor values, and termination - with documented examples achieving 25 m at 390 kHz and 100 m at 185 kHz using optimized layouts and drive strength.
Does P82B96TD,112 require external direction control signals?
No, the P82B96TD,112 operates bidirectionally without any direction control pins. It uses asymmetric logic thresholds on Sx/Sy versus Rx/Ry to prevent latching, enabling transparent, protocol-agnostic buffering of standard I²C-bus SDA and SCL signals.
Can P82B96TD,112 be used with 15 V I²C-bus segments?
Yes, the P82B96TD,112 supports Tx/Ty outputs rated up to 15 V and can interface I²C-bus logic to 15 V-level buses. Its Sx/Sy inputs tolerate up to 18 V, and its Rx/Ry inputs scale thresholds to VCC - making it suitable for high-voltage industrial bus extensions.
What happens to P82B96TD,112 I/Os if VCC is removed?
When VCC is removed, all P82B96TD,112 I/Os (Sx, Sy, Tx, Ty, Rx, Ry) become high-impedance - neither pulling up nor down. This prevents bus contention and allows safe hot-swap or power-fail scenarios without affecting connected devices.
Is P82B96TD,112 pin-compatible with other P82B96 variants?
Yes, the P82B96TD,112 shares identical pinout and electrical specifications with P82B96DP,118 (TSSOP8) and P82B96TD/S900,118 (SO8, −40 °C to +125 °C). Only package dimensions and temperature grade differ - no PCB redesign is needed when substituting within the same package family.
P82B96TD,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Last Time Buy
- Type:
- Buffer, ReDriver
- Applications:
- I2C
- Input:
- 2-Wire Bus
- Output:
- 2-Wire Bus
- Data Rate (Max):
- 400kHz
- Number of Channels:
- 2
- Delay Time:
- -
- Signal Conditioning:
- -
- Capacitance - Input:
- 7 pF
- Voltage - Supply:
- 2V ~ 15V
- Current - Supply:
- 900µA
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
P82B96TD,112 FAQ
1.How can I place an order for P82B96TD,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for P82B96TD,112 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 P82B96TD,112 reliable?
The price and inventory of P82B96TD,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for P82B96TD,112 is usually 5 days.
3.What payment methods are accepted for P82B96TD,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for P82B96TD,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for P82B96TD,112?
P82B96TD,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your P82B96TD,112 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 P82B96TD,112?
For technical support, including P82B96TD,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your P82B96TD,112 requirements.
6.How does Aetrix verify that P82B96TD,112 is sourced from the original manufacturer or authorized distributors?
All P82B96TD,112 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 P82B96TD,112 meets industry standards.
7.What is the process for return or replacement of P82B96TD,112?
All P82B96TD,112 units undergo pre-shipment inspection (PSI). If there is an issue with P82B96TD,112, 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 P82B96TD,112 part is unused and in its original packaging.
Return procedure for P82B96TD,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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