PCF8574RGTRIn StockTexas Instruments
PCF8574RGTR is a remote 8-bit I/O expander for I2C-bus, supporting up to 8 bidirectional I/O ports with interrupt output, 100kHz clock frequency, and 7-bit addressing. Available from $0.5565, in stock with worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Quad Flat No-Lead
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- PCF8574RGTR Datasheet PDF
- Category
- Integrated Circuit
- Price
- From $0.5565(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 8-bit quasi-bidirectional I/O port expansion over I2C bus with minimal external components
- Supports up to 8 device addresses via A0-A2 pins, allowing up to 8 devices on a single bus
- Active-low interrupt output for real-time notification of I/O state changes
- Wide operating voltage range of 2.5V to 6V for flexible system integration
- Low standby current consumption for power-sensitive applications
Applications
The PCF8574RGTR is widely used in embedded systems requiring GPIO expansion, such as driving LCD displays, LED matrices, and relay arrays via a simple 2-wire I2C interface. It is ideal for industrial automation panels, smart home controllers, and IoT sensor hubs where microcontroller I/O pins are limited. Its interrupt-driven design also makes it suitable for keyboard scanning and low-power remote monitoring applications.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Address Bus Width | 8 |
| Clock Frequency-Max | 0.1MHz |
| JESD-30 Code | S-PQCC-N16 |
| 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 | LCC16,.12SQ,20 |
| Package Shape | SQUARE |
| Package Style | CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max | 0.1mA |
| Supply Voltage-Max | 6V |
| Supply Voltage-Min | 2.5V |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Nickel/Palladium/Gold (Ni/Pd/Au) |
| Terminal Form | NO LEAD |
| Terminal Pitch | 0.5mm |
| Terminal Position | QUAD |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| uPs/uCs/Peripheral ICs Type | PARALLEL IO PORT, GENERAL PURPOSE |
| Package | Quad Flat No-Lead |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.90 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the maximum clock frequency supported by the PCF8574RGTR?
The PCF8574RGTR supports a maximum I2C clock frequency of 100kHz (standard mode). This makes it compatible with virtually all microcontrollers and single-board computers that implement the standard I2C protocol, including Arduino, STM32, and Raspberry Pi platforms.
How many PCF8574RGTR devices can be connected on a single I2C bus?
Up to 8 PCF8574RGTR devices can be connected on a single I2C bus simultaneously, since the device supports 3 configurable address pins (A0, A1, A2), providing 8 unique 7-bit addresses. This allows expansion to 64 additional I/O lines from a single bus.
What package type is the PCF8574RGTR and what are its key dimensions?
The PCF8574RGTR comes in a 16-pin Quad Flat No-Lead (QFN/VQFN) package (JESD-30 code: S-PQCC-N16). This compact, lead-free surface-mount package is suitable for space-constrained PCB designs and complies with RoHS environmental requirements.
What are typical applications for the PCF8574RGTR?
The PCF8574RGTR is commonly used for LCD and LED display control, relay and motor driver interfaces, keyboard matrix scanning, and general-purpose I/O expansion in industrial control, consumer electronics, and IoT devices where the host microcontroller has limited available GPIO pins.
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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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $1.8550 | $1.85 |
| 10+ | $1.1500 | $11.50 |
| 14+ | $0.9275 | $12.98 |
| 25+ | $0.9169 | $22.92 |
| 66+ | $0.5565 | $36.73 |
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