Overview
The TCA9554APWR, manufactured by Texas Instruments, is an 8-bit I/O expander designed for I²C and SMBus interfaces. This component is widely used in applications requiring additional I/O ports, particularly in systems with limited GPIO capabilities. Its market positioning targets embedded systems, industrial automation, and consumer electronics, offering a cost-effective solution for expanding I/O functionality. The TCA9554APWR stands out for its low power consumption, wide operating voltage range, and robust interrupt functionality, making it a competitive choice in its category.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| I/O Ports | 8 | ||
| Output Type | Push-Pull | ||
| Clock Frequency | 400 | kHz | |
| Supply Voltage | 1.65 to 5.5 | V | |
| Operating Temperature | -40 to +85 | °C | |
| Mounting Type | SMT | ||
| Package/Case | TSSOP-16 | 5.00 x 4.40mm | |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | ||
| Interrupt Output | Yes | ||
| RoHS Compliance | Yes |
Key Features
- Supports I²C and SMBus protocols with a clock frequency of up to 400 kHz.
- Wide operating voltage range (1.65V to 5.5V) for compatibility with various systems.
- Interrupt output for efficient event-driven applications.
- Hardware address pins allowing up to 8 devices on the same bus.
- Low standby current consumption, ideal for battery-powered devices.
- Built-in power-on reset and noise filtering for reliable operation.
Applications
The TCA9554APWR is suitable for a wide range of applications, including industrial automation, server management, personal computers, and consumer electronics such as gaming consoles. Its ability to expand I/O ports makes it particularly useful in systems with limited GPIOs, such as embedded controllers. Additionally, its robust design and low power consumption make it ideal for battery-operated devices and harsh industrial environments.
Q & A
1. What is the maximum clock frequency supported by the TCA9554APWR?
The TCA9554APWR supports a maximum clock frequency of 400 kHz.
2. What is the operating voltage range of this component?
It operates within a voltage range of 1.65V to 5.5V.
3. Does the TCA9554APWR support interrupt functionality?
Yes, it features an interrupt output for efficient event handling.
4. How many I/O ports does this expander provide?
It provides 8 I/O ports.
5. Is the TCA9554APWR RoHS compliant?
Yes, it is RoHS compliant.
6. What is the package type of the TCA9554APWR?
It comes in a TSSOP-16 package.
7. Can multiple TCA9554APWR devices be used on the same bus?
Yes, up to 8 devices can be used on the same bus using hardware address pins.
8. What is the typical application of this component?
It is commonly used in industrial automation, server management, and consumer electronics.
9. Does the TCA9554APWR have built-in noise filtering?
Yes, it includes noise filtering on the SCL/SDA inputs.
10. What is the moisture sensitivity level (MSL) of this component?
It has an MSL of 1, meaning it is suitable for unlimited floor life.
