PCA9555PWR Texas Instruments In Stock
PCA9555PWR is a 16-bit I2C I/O expander by Texas Instruments, featuring two 8-bit I/O ports with interrupt output. Key specs: 2.3V–5.5V supply, 400kHz I2C, 16 GPIO pins. From $0.459, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- —
- Lifecycle
- ACTIVE
- Datasheet
- N/A
- Price
- From $0.4590(MOQ 25)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of PCA9555PWR?
- 16-bit I/O expansion via I2C bus with up to 8 device addresses
- Wide supply voltage range: 2.3V to 5.5V for versatile system integration
- 400kHz Fast-mode I2C interface for high-speed communication
- Active-low interrupt output for efficient event-driven designs
- Low standby current for power-sensitive applications
What is PCA9555PWR used for?
PCA9555PWR is widely used in industrial control systems and embedded designs where GPIO expansion is needed. It suits applications such as LED matrix driving, keypad scanning, relay control, and sensor interfacing. Its I2C interface and interrupt capability make it ideal for microcontroller-based IoT devices and smart home equipment.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
What are equivalent replacements for PCA9555PWR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the I2C address range of PCA9555PWR?
PCA9555PWR supports up to 8 selectable I2C addresses (0x20–0x27) via three hardware address pins (A0, A1, A2), allowing up to 8 devices to share the same I2C bus without address conflicts.
What voltage does PCA9555PWR operate at?
PCA9555PWR operates over a wide supply voltage range of 2.3V to 5.5V, making it compatible with both 3.3V and 5V logic systems commonly used in microcontrollers and embedded platforms.
What are common applications for PCA9555PWR?
PCA9555PWR is commonly used for GPIO expansion in LED driving, keypad matrix scanning, relay control, and sensor interfacing. Its interrupt output and I2C interface make it well-suited for IoT devices, industrial controllers, and consumer electronics.
What package does PCA9555PWR come in?
PCA9555PWR is available in a 24-pin TSSOP (PWR) surface-mount package, which provides a compact footprint suitable for space-constrained PCB designs in consumer and industrial applications.
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Why Buy from FindMyChip
About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 25+ | $1.3800 | $34.50 |
| 100+ | $1.2300 | $123.00 |
| 250+ | $1.1547 | $288.68 |
| 405+ | $0.4963 | $201.00 |
| 525+ | $0.4776 | $250.74 |
| 655+ | $0.4590 | $300.65 |
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