PCA9554DB Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
PCA9554DB is an 8-bit I2C I/O expander with interrupt output from Texas Instruments. Features 8 programmable I/O lines, up to 400 kHz I2C clock, and 3-bit address selection supporting up to 8 devices per bus. From $1.11, in stock worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- OBSOLETE
- Datasheet
- PCA9554DB Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $1.1100(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of PCA9554DB?
- 8-bit general-purpose I/O expansion via I2C bus, enabling microcontrollers to control more peripherals
- Supports up to 400 kHz Fast-mode I2C clock frequency for high-speed communication
- 3-bit hardware address pins allow up to 8 devices on the same I2C bus
- Active-low interrupt output signals host controller on any input state change
- Low standby current consumption ideal for battery-powered and energy-sensitive applications
What is PCA9554DB used for?
The PCA9554DB is widely used in embedded systems requiring GPIO expansion, such as industrial control panels, server management boards, and smart home devices. It is commonly deployed in applications where microcontrollers need additional I/O lines to drive LEDs, read button states, or interface with sensors. Its I2C compatibility and interrupt capability also make it suitable for IoT edge nodes and battery-operated portable equipment.
What are the specifications of PCA9554DB?
| YTEOL | 0 |
| Address Bus Width | 8 |
| Clock Frequency-Max | 0.4MHz |
| JESD-30 Code | R-PDSO-G16 |
| JESD-609 Code | e4 |
| Number of Bits | 8 |
| Number of I/O Lines | 8 |
| Number of Ports | 1 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SSOP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max | 0.175mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 2.3V |
| Supply Voltage-Nom | 3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| uPs/uCs/Peripheral ICs Type | PARALLEL IO PORT, GENERAL PURPOSE |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | Malaysia |
Where can I find the PCA9554DB datasheet?
PCA9554DB Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for PCA9554DB?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum I2C clock frequency supported by the PCA9554DB?
The PCA9554DB supports a maximum I2C clock frequency of 400 kHz (Fast-mode), making it compatible with standard 100 kHz and fast 400 kHz I2C buses used in most microcontrollers and SoCs.
How many PCA9554DB devices can be connected on the same I2C bus?
Up to 8 PCA9554DB devices can be connected on the same I2C bus simultaneously. This is achieved through 3 hardware address pins (A0, A1, A2) that allow each device to be assigned a unique 7-bit address, providing up to 64 additional I/O lines from a single bus.
What package type is the PCA9554DB available in?
The PCA9554DB is available in a 16-pin SSOP (Shrink Small Outline Package) with a 0.3-inch body width (JESD-30 code: R-PDSO-G16), suitable for space-constrained PCB designs requiring a small footprint.
What are common applications for the PCA9554DB I/O expander?
The PCA9554DB is commonly used in industrial automation, server management boards, IoT devices, and consumer electronics where additional GPIO lines are needed. Typical use cases include driving LED arrays, reading button/switch states, controlling relays, and interfacing with multiple peripheral sensors via a shared I2C bus.
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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.
More from Texas Instruments
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.3500 | $1.35 |
| 45+ | $1.1250 | $50.63 |
| 10000+ | $1.1100 | $11100.00 |
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