PCF8575CDBG4 Texas Instruments Integrated Circuit (Small Outline Packages) In Stock
PCF8575CDBG4 is a Texas Instruments 16-bit I2C/SMBus GPIO expander operating up to 5.5 V with 0.4 MHz clock, 16 I/O lines across 2 ports, in a 24-pin SSOP package. Available in stock with competitive pricing and worldwide shipping.
- Manufacturer
- Texas Instruments
- Package
- Small Outline Packages
- Pin Count
- 24
- Lifecycle
- OBSOLETE
- Datasheet
- PCF8575CDBG4 Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 16-bit bidirectional I/O expansion over 2-wire I2C/SMBus interface at up to 0.4 MHz for minimal pin overhead
- Wide supply voltage tolerance up to 5.5 V covering both 3.3 V and 5 V system designs without level shifters
- 24-pin SSOP (JESD-30 R-PDSO-G24) RoHS-compliant package enabling compact board layout in space-constrained applications
Applications
PCF8575CDBG4 is ideal for microcontroller-based systems needing additional GPIO capacity without extra MCU pins, such as industrial control panels, keyboard/LED matrix drivers, and embedded HMI interfaces. With 16 I/O lines organized in 2 ports over a 2-wire I2C bus, it integrates easily into multi-device I2C networks operating at standard 400 kHz. Its 5.5 V compatibility makes it a versatile drop-in expander for both legacy 5 V and modern 3.3 V designs.
Specifications
| YTEOL | 0 |
| Clock Frequency-Max | 0.4MHz |
| JESD-30 Code | R-PDSO-G24 |
| JESD-609 Code | e4 |
| Number of Bits | 16 |
| Number of I/O Lines | 16 |
| Number of Ports | 2 |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SSOP24,.3 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, SHRINK PITCH |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max | 0.2mA |
| Supply Voltage-Max | 5.5V |
| Supply Voltage-Min | 4.5V |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | NICKEL PALLADIUM GOLD |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.65mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| 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 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for PCF8575CDBG4:
Frequently Asked Questions
How many I/O lines does the PCF8575CDBG4 provide and how are they organized?
The PCF8575CDBG4 provides 16 bidirectional I/O lines arranged as 2 ports of 8 bits each, giving a total of 16 bits of GPIO expansion. All 16 lines are accessible over the 2-wire I2C/SMBus interface, allowing the host MCU to read or write all ports in a single 16-bit I2C transaction.
At what clock frequency does the PCF8575CDBG4 I2C interface operate, and does it support fast-mode?
The PCF8575CDBG4 supports I2C clock frequencies up to 0.4 MHz (400 kHz), which corresponds to I2C Fast Mode. This allows latency-efficient GPIO reads and writes in real-time control applications, and the device is fully backward compatible with standard 100 kHz I2C hosts.
In what supply voltage range does the PCF8575CDBG4 operate, and can it interface directly with 3.3 V microcontrollers?
The PCF8575CDBG4 operates with a supply voltage up to 5.5 V and is compatible with both 5 V and 3.3 V logic systems. When powered from a 3.3 V rail, it can directly interface with 3.3 V microcontrollers without level shifters, simplifying mixed-voltage board designs and reducing component count.
What package does the PCF8575CDBG4 use and how does it compare to DIP alternatives for PCB layout?
PCF8575CDBG4 uses a 24-pin SSOP (JESD-30 code R-PDSO-G24) surface-mount package with 0.635 mm pitch. Compared to a 24-pin DIP package, the SSOP footprint is roughly 60% smaller in board area, enabling denser PCB layouts in compact embedded systems and IoT nodes while still supporting hand soldering in prototyping.
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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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