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Name: PCA9641PWJ
Brand: NXP USA Inc.
SKU: PCA9641PWJ
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Any Feature, including a modified Existing Feature, that is not an Existing Feature.

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NXP USA Inc. PCA9641PWJ

Part No.:: PCA9641PWJ

Manufacturer:: NXP USA Inc.

Package:: 16-TSSOP (0.173, 4.40mm Width)

Datasheet:: PCA9641PWJ.pdf

Description:: IC DEMUX 2CHAN 16TSSOP

In Stock:: 4207

Quantity:: Add To Cart

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PCA9641PWJ Typical application Circuitry

PCA9641PWJ

The PCA9641PWJ is a dual bidirectional I²C-bus and SMBus voltage-level translator with an interrupt function and a fixed or programmable direction. It's designed to provide bidirectional voltage-level translation between low-voltage (down to 0.8V) and higher-voltage (2.5V to 5.5V) I²C-bus or SMBus applications.

Features of PCA9641PWJ

1. Voltage Level Translation: The PCA9641PWJ enables voltage-level translation between devices operating at different voltage levels.

2. Dual Bidirectional Channels: It provides two bidirectional channels for data transfer.

3. Interrupt Function: Comes with an interrupt function for improved communication efficiency.

4. Direction Configuration: Offers both fixed and programmable direction settings.

Application Scenario: Multi-Voltage I²C Communication System

In a system where devices operating at different voltage levels need to communicate over the I²C bus, the PCA9641PWJ can be used to facilitate this communication. Here's a detailed guide for connecting this in such a system:

Circuit Connection Details

1. Power Supply (VREF1 - Pin 1, GND1 - Pin 5, VREF2 - Pin 16, GND2 - Pin 12):

- Supplying Power to Both Sides: Connect VREF1 (Pin 1) to the lower voltage domain and VREF2 (Pin 16) to the higher voltage domain. Ground both GND1 (Pin 5) and GND2 (Pin 12).

2. I²C Bus Connection (SDA1, SCL1 - Pins 2 and 3; SDA2, SCL2 - Pins 15 and 14):

- Connecting I²C Lines: Connect SDA1 and SCL1 (Pins 2 and 3) to the I²C data and clock lines of the lower voltage domain device. Similarly, connect SDA2 and SCL2 (Pins 15 and 14) to the I²C data and clock lines of the higher voltage domain device.

3. Interrupt Lines (INT1 - Pin 4, INT2 - Pin 13):

- Handling Interrupts: Connect INT1 (Pin 4) and INT2 (Pin 13) to the interrupt lines of the respective devices if interrupt-driven communication is needed.

4. Direction Control (DIR - Pin 6):

- Setting Direction: If fixed direction is needed, connect DIR (Pin 6) to VREF1 or GND1. If programmable direction is needed, connect DIR to a GPIO pin on the master device to control the direction.

5. Enable Pin (EN - Pin 11):

- Enabling the Device: Connect EN (Pin 11) to VREF1 to enable the PCA9641PWJ. This pin can also be connected to a GPIO pin for controlled enabling.

Design Considerations

When designing a circuit with the PCA9641PWJ, consider the following:

1. Voltage Compatibility: Ensure that the voltage levels of both sides of the system are within the range that the PCA9641PWJ can translate.

2. Pull-up Resistors: Properly size the pull-up resistors on the SDA and SCL lines for both voltage domains to ensure reliable communication.

3. Direction Control: Correctly configure the DIR pin based on whether a fixed or programmable direction is required.

4. Interrupt Handling: Efficiently manage the interrupt signals to ensure that devices can promptly respond to communication requests.

By carefully considering these aspects and utilizing the functionalities and pin configurations of the PCA9641PWJ, one can effectively facilitate I²C communication between devices operating at different voltage levels. The PCA9641PWJ, with its voltage-level translation and dual bidirectional channels, is an excellent choice for complex multi-voltage I²C communication systems.

PCA9641PWJ information

PCA9641PWJ Specifications

Package/Case:
16-TSSOP (0.173, 4.40mm Width)
Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
-
ProductStatus:
Active
Type:
Buffer, Multiplexer
Applications:
I²C
Input:
2-Wire Bus
Output:
2-Wire Bus
DataRate(Max):
-
NumberofChannels:
2
DelayTime:
-
SignalConditioning:
-
Capacitance-Input:
6 pF
Voltage-Supply:
2.3V ~ 3.6V
Current-Supply:
100mA
OperatingTemperature:
-40°C ~ 85°C
MountingType:
Surface Mount

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6. What is the process for return or replacement of PCA9641PWJ?

All goods will implement Pre-Shipment Inspection (PSI), selected at random from all batches of your order to do a systematic inspection before arranging the shipment. If there is something wrong with the PCA9641PWJ we delivered, we will accept the replacement or return of the PCA9641PWJ only when all of the below conditions are fulfilled:

(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

(2)We are informed of the defect described above within 90 days after the delivery of PCA9641PWJ.

(3)The PartNo is unused and only in the original unpacked packaging.

Two processes to return the products:

(1)Inform us within 90 days

(2)Obtain Requesting Return Authorizations