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NXP Semiconductors PCA9614DPZ
- Part No.:
- PCA9614DPZ
- Manufacturer:
- NXP Semiconductors
- Category:
- Signal Buffers, Repeaters, Splitters
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
PCA9614DPZ.pdf
- Description:
- IC REDRIVER I2C 2CH 10TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,476
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Product details
Overview
PCA9614DPZ from NXP Semiconductors is a 2-channel Fast-mode Plus (1 MHz) differential I²C-bus buffer that converts single-ended I²C/SMBus signals to noise-immune dI²C differential pairs for long-cable or high-noise environments. It features dual supply rails (VDD(A): 2.3–5.5 V, VDD(B): 3.0–5.5 V), 30 mA SDA/SCL drive strength, and automatic bidirectional signal translation without direction control. It enables robust I²C communication across cabinets in industrial power control systems.
For engineers reviewing the PCA9614DPZ datasheet, PCA9614DPZ pinout, PCA9614DPZ application, or PCA9614DPZ equivalent, this page delivers verified technical context, validated pin functions, real-world use cases in electrically noisy deployments, and confirmed alternative options for dI²C bus extension designs requiring ground-offset tolerance up to ±2.5 V and cable runs ≥3 m.
Technical Context
The PCA9614DPZ implements two independent single-ended-to-differential channels-one for SCL and one for SDA-each with static level offset on the card side to prevent bus latch-up. Its differential receivers reject common-mode noise and ground offsets up to 0.5 × VDD(B), enabling operation across isolated voltage domains without shared ground.
Signal direction is fully automatic and protocol-transparent; no external control or timing coordination is needed. The EN pin (active HIGH, internal pull-up to VDD(A)) places both channels into high-impedance state, supporting fault isolation and power-up sequencing in multi-node dI²C systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Bus Speed | Up to 1 MHz Fast-mode Plus - supports high-speed sensor/control data transfer over extended dI²C links. |
| Differential Output | 1.5 V p-p nominal - ensures reliable detection above ±200 mV receiver sensitivity despite cable attenuation. |
| Cable Length | ≥3 m at 1 MHz; longer at reduced clock rates - enables inter-cabinet I²C routing without repeaters. |
| Supply Voltages | VDD(A): 2.3–5.5 V (card side); VDD(B): 3.0–5.5 V (line side) - allows level translation between 3.3 V controllers and 5 V dI²C lines. |
| Input Impedance | 1 MΩ typical - minimizes loading on legacy I²C buses and preserves timing margins. |
| ESD Protection | >2000 V HBM - sustains handling and system-level ESD events in industrial assembly environments. |
| Operating Temperature | −40 °C to +85 °C - qualified for deployment in commercial lighting, HVAC, and remote monitoring enclosures. |
Pinout & Package
TSSOP10 package (SOT552-1), 3 mm body width, 0.5 mm pitch - surface-mount compatible with standard reflow profiles and space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD(A) | I²C-bus side supply | Reference rail for card-side logic (2.3–5.5 V); tolerant to 5.5 V - powers input receivers and EN pull-up. |
| SDA | Single-ended data I/O | Open-drain interface to standard I²C devices; requires external pull-up - connects to local controller/target bus. |
| EN | Enable control input | Active HIGH with internal 300 kΩ pull-up to VDD(A); disables both channels to high-Z - used for hot-swap isolation and startup sequencing. |
| SCL | Single-ended clock I/O | Open-drain interface synchronized with SDA; shares same pull-up constraints - maintains I²C protocol integrity. |
| VSS | Ground reference | Common return for both sides; only one GND pin - mandates careful layout to avoid ground bounce coupling into differential receivers. |
| DSCLM / DSCLP | Differential clock pair | Complementary open-drain outputs/inputs for dI²C clock; require 100 Ω twisted-pair termination - rejects common-mode noise on long cables. |
| DSDAP / DSDAM | Differential data pair | Complementary open-drain outputs/inputs for dI²C data; identical termination requirements - enables bidirectional arbitration across differential link. |
| VDD(B) | Differential side supply | Main power for line drivers/receivers (3.0–5.5 V); best performance at 5 V - defines common-mode range and output swing. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic bidirectional translation | No direction pin or control logic required - preserves I²C arbitration, clock stretching, and ACK/NACK timing transparently. |
| Differential noise immunity | Rejects impulse noise and ground offsets up to ±2.5 V - eliminates false ACKs and bus hangs in motor-drive or power-supply proximity. |
| Multi-drop dI²C support | Twisted-pair bus accepts multiple nodes without repeaters - simplifies star or daisy-chain topologies for distributed sensor networks. |
| Lock-up free operation | Powered-off pins remain high-impedance; static level offset prevents latch-up with other I²C buffers - ensures safe integration into mixed-buffer systems. |
| 1 MHz Fast-mode Plus compatibility | 30 mA sink capability on SDA/SCL - drives higher bus capacitance (up to 540 pF) while maintaining timing compliance. |
Applications
| Industrial Power Supply Control | Remote Environmental Monitoring |
|---|---|
Use Scenario: Controlling multiple AC/DC power modules located in separate equipment cabinets, where ground potential differs by up to 2.5 V between cabinets. IC Role / Device Role / Timing Role: PCA9614DPZ acts as a galvanically isolated I²C translator, converting controller-side single-ended signals to differential dI²C for inter-cabinet communication. Use Value: Eliminates ground-loop-induced communication failures and enables reliable telemetry and configuration updates over 3+ meter shielded twisted-pair cables. |
Use Scenario: Connecting temperature, humidity, and leak sensors mounted in electrically noisy mechanical rooms to a central controller in an adjacent control room. IC Role / Device Role / Timing Role: PCA9614DPZ serves as a noise-immune bridge between legacy I²C sensors and the main controller, operating at 400 kHz Fast-mode. Use Value: Prevents false readings and bus lockups caused by EMI from HVAC compressors or variable-frequency drives near sensor wiring. |
| Commercial Lighting Systems | Industrial HVAC Zone Control |
Use Scenario: Distributing I²C commands from a central lighting controller to LED driver modules installed across large retail spaces with long cable runs. IC Role / Device Role / Timing Role: PCA9614DPZ extends the I²C bus beyond 1-meter limits using differential signaling, enabling centralized dimming and fault reporting. Use Value: Supports up to 1 MHz operation over 3 m CAT5 cable, reducing need for intermediate repeaters and lowering BOM cost per fixture zone. |
Use Scenario: Linking thermostats, valve actuators, and airflow sensors across multiple HVAC zones powered from independent supplies with floating grounds. IC Role / Device Role / Timing Role: PCA9614DPZ provides ground-offset-tolerant I²C connectivity between zone controllers and the building management system (BMS). Use Value: Enables deterministic communication despite >2 V ground differentials, avoiding intermittent timeouts and manual reset requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential I²C-bus extension applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PCA9615DPZ | Same pinout and function but adds integrated 100 Ω termination resistors on dI²C outputs - reduces external component count. | Preferred where board space is constrained and fixed 100 Ω termination suffices; not suitable for custom impedance or multi-drop stub optimization. | Select PCA9615DPZ when minimizing external passives is critical and cable impedance is stable at 100 Ω. |
| TUSB1210 | USB-to-I²C bridge with integrated dI²C transceiver - includes USB interface logic, not pure buffer; larger QFN24 package. | Used when host connection is USB-based rather than native I²C; adds firmware dependency and latency not present in PCA9614DPZ. | Choose TUSB1210 only if USB host interface is mandatory; otherwise PCA9614DPZ offers lower latency and simpler integration. |
Compared with PCA9615DPZ, PCA9614DPZ gives full flexibility in external termination design and supports optimized stub lengths in multi-drop dI²C; versus TUSB1210, it delivers deterministic, zero-latency I²C extension without USB protocol overhead or host driver requirements.
Availability
PCA9614DPZ is available at Aetrix Electronics and suitable for industrial power control, remote environmental monitoring, commercial lighting systems, and HVAC zone management requiring stable component supply amid ongoing product discontinuation transitions.
Supply support for PCA9614DPZ 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 headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT applications.
The PCA9614DPZ belongs to NXP's differential I²C buffer product line, engineered specifically to extend legacy I²C infrastructure into electrically harsh, multi-cabinet, and ground-isolated environments without protocol modification.
FAQ
What is the primary function of the PCA9614DPZ in an I²C system?
The PCA9614DPZ serves as a 2-channel differential I²C-bus buffer that converts standard single-ended I²C signals (SCL/SDA) into robust differential dI²C pairs for noise immunity and ground-offset tolerance. It enables reliable I²C communication over distances exceeding 3 meters in electrically noisy or multi-ground environments without altering the underlying I²C protocol - making PCA9614DPZ ideal for inter-cabinet control and distributed sensor networks.
Does the PCA9614DPZ require external direction control or configuration?
No, the PCA9614DPZ operates fully autonomously: signal direction is determined by the I²C protocol itself, and no external control lines, registers, or configuration are needed. The EN pin is the only control input, and it simply enables or disables both channels simultaneously. This makes PCA9614DPZ plug-and-play compatible with existing I²C controllers and targets - no firmware changes or timing adjustments are required to deploy PCA9614DPZ.
Can the PCA9614DPZ operate with different supply voltages on its two sides?
Yes - PCA9614DPZ supports independent supplies: VDD(A) (2.3–5.5 V) powers the single-ended I²C side, while VDD(B) (3.0–5.5 V) powers the differential dI²C side. This allows level translation, such as interfacing a 3.3 V microcontroller bus to a 5 V dI²C cable segment. Both supplies must be within their respective ranges, and VDD(B) should ideally be 5 V for optimal noise margin and output swing in PCA9614DPZ implementations.
What is the maximum recommended cable length for the PCA9614DPZ at 1 MHz?
The PCA9614DPZ supports ≥3 meters of twisted-pair cable (e.g., CAT5) at full 1 MHz Fast-mode Plus speed under typical conditions. Longer runs are possible at reduced clock frequencies - for example, up to 10 meters may be feasible at 100 kHz. Performance depends on cable quality, termination accuracy (100 Ω), stub length minimization, and ambient noise; actual length should be validated per installation using signal integrity testing with PCA9614DPZ in the target system.
Is the PCA9614DPZ still in active production, and what does "drop-in replacement" mean for this part?
The PCA9614DPZ was discontinued per NXP Discontinued Notice 202104010DN, but remains supported as a drop-in replacement per PCN 202104008A - meaning it retains identical pinout, electrical behavior, and functional specifications as its predecessor (PCA9614DP). Aetrix Electronics maintains legacy inventory and offers lifecycle coordination support for PCA9614DPZ to ensure continuity in deployed systems where redesign is impractical or costly.
PCA9614DPZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Buffer, ReDriver
- Applications:
- I2C
- Input:
- 2-Wire Bus
- Output:
- 2-Wire Bus
- Data Rate (Max):
- 400kHz
- Number of Channels:
- 2
- Delay Time:
- 150ns
- Signal Conditioning:
- -
- Capacitance - Input:
- 7 pF
- Voltage - Supply:
- 2.3V ~ 3V, 3V ~ 5.5V
- Current - Supply:
- 16µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-TSSOP
PCA9614DPZ FAQ
1.How can I place an order for PCA9614DPZ through Aetrix?
Please submit a Request for Quotation (RFQ) for PCA9614DPZ 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 PCA9614DPZ reliable?
The price and inventory of PCA9614DPZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PCA9614DPZ is usually 5 days.
3.What payment methods are accepted for PCA9614DPZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PCA9614DPZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PCA9614DPZ?
PCA9614DPZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PCA9614DPZ 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 PCA9614DPZ?
For technical support, including PCA9614DPZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PCA9614DPZ requirements.
6.How does Aetrix verify that PCA9614DPZ is sourced from the original manufacturer or authorized distributors?
All PCA9614DPZ 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 PCA9614DPZ meets industry standards.
7.What is the process for return or replacement of PCA9614DPZ?
All PCA9614DPZ units undergo pre-shipment inspection (PSI). If there is an issue with PCA9614DPZ, 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 PCA9614DPZ part is unused and in its original packaging.
Return procedure for PCA9614DPZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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