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PCA9548APW
+NomenclatureIC INTERFACE SPECIALIZED 24TSSOP
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FabricantTexas Instruments
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Pièce fabricant #PCA9548APW
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En stock4278
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Spécifications
| Attribut | Valeur |
| Part Status | Obsolete |
| Base Product Number | PCA9548 |
| Applications | Translating Switch |
| Interface | I2C, SMBus |
| Voltage - Supply | 2.3V ~ 5.5V |
| Package | 24-TSSOP (0.173", 4.40mm Width) |
| Supplier Device Package | 24-TSSOP |
| Mounting Type | Surface Mount |
| Packaging | Tube |
Présentation
Description
The device operates on a supply voltage range of 2.3 V to 5.5 V, making it compatible with various logic levels. It supports standard and fast I2C bus modes, with data transfer speeds up to 400 kHz. The PCA9548APW is packaged in a compact TSSOP (Thin Shrink Small Outline Package), which is suitable for space-constrained applications.
Common applications include embedded systems, microcontroller platforms, and any I2C-based design requiring expansion of the bus. The ability to control multiple devices simultaneously makes the PCA9548APW a valuable component in complex electronic systems, particularly where multiple sensors or ICs need to be interfaced with a single microcontroller.
Equivalent
1. TCA9548A by Texas Instruments: Functionally similar, often considered a drop-in replacement.
2. MAX7369 by Maxim Integrated: Offers I2C expansion capabilities.
3. LTC4306 by Analog Devices: Provides similar I2C bus switching features.
Always ensure compatibility by checking specifications such as voltage, current ratings, and package types before substituting.
Features
1. I²C Interface: It operates on the I²C-bus protocol, allowing easy integration with other I²C devices.
2. 8-channel Expansion: The device features an 8-channel I²C switch, enabling one master to control up to eight separate slave devices or multiple I²C buses.
3. Individual Channel Control: Each channel can be individually enabled or disabled, allowing for flexible control over connected devices.
4. Voltage Range: It supports a wide supply voltage range from 2.3V to 5.5V, making it suitable for various applications.
5. Low Standby Current: The device consumes minimal power in standby mode, which is ideal for battery-powered applications.
6. Addressability: Up to eight PCA9548APW devices can be configured on the same I²C-bus by using the hardware address pins.
7. Interrupt Output: The device features an interrupt output which can be used to alert the master of changes in the input channels.
8. Compact Package: It is available in compact TSSOP and SOIC packages, facilitating space-saving designs.
These features make the PCA9548APW a versatile choice for expanding I²C-bus systems with multiple peripherals.
Pinout
Each of the eight channels can be individually enabled or disabled, allowing for flexible communication with different I2C devices on separate channels. This is particularly useful in applications where multiple identical I2C devices need to be addressed individually without causing address conflicts. The device supports standard, fast, and fast-mode Plus I2C-bus speeds, making it versatile for various I2C applications.
Manufacturer
Application
1. Multi-Channel Data Acquisition: Facilitates multiple sensor connections to a microcontroller.
2. Embedded Systems: Manages multiple I2C peripherals with varying addresses.
3. Test and Measurement Equipment: Enables testing of different devices without reconfiguration.
4. Consumer Electronics: Supports complex device architectures by expanding I2C buses.
5. Industrial Automation: Enhances communication in systems requiring numerous I2C sensors or modules.
6. Communication Systems: Helps manage data flow in complex network setups.
These capabilities make it useful for optimizing I2C network designs across various applications.
Package
Frequently Asked Questions
Q: What is the primary function of the PCA9548APW?
A: It is an 8-channel I2C/SMBus translating switch, allowing multiple I2C devices with different voltage levels to be connected via a single bus.
Q: What is the operating voltage range for this device?
A: It supports a wide supply voltage range from 2.3V to 5.5V, enabling compatibility with both 3.3V and 5V logic systems.
Q: In what package is the PCA9548APW available?
A: It comes in a 24-pin TSSOP package (4.40mm width), with the supplier device package also being 24-TSSOP, suitable for surface mount assembly.
Q: How does this switch handle I2C bus address conflicts?
A: It allows up to eight separate I2C channels, isolating device groups to prevent address conflicts on the main bus.
Q: Can this component be used for voltage level translation?
A: Yes, it functions as a translating switch, enabling seamless communication between I2C buses operating at different voltage levels within the 2.3V to 5.5V range.
Q: Does the PCA9548APW support hot-swap or live insertion?
A: The provided parameters do not specify hot-swap capability; standard I2C bus precautions should be followed for live insertion.
Q: Is this part still in active production?
A: According to the specifications, the part status is "Obsolete," so it may not be recommended for new designs without checking alternative stock.
Q: What mounting method does this device require?
A: It uses surface mount technology (SMT) with the 24-TSSOP package.
