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TI PCF8574APW product image
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TI PCF8574APWRoHS

Manufacturer
TI
MPN
PCF8574APW
LCSC Part #
C2867171
Packaging
TSSOP-20
Customer #
Key Attributes
PCF8574A Remote 8-Bit I/O Expander for I2C Bus
Datasheetpdf iconTI PCF8574APW
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QtyUnit Price(Reference Only)Total Amount
1+$ 5.8092$ 5.81
200+$ 2.2482$ 449.64
500+$ 2.169$ 1084.50
1,000+$ 2.1309$ 2130.90
Standard Packaging70/Full Tube
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Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Interface/I/O Expanders
ManufacturerTI
PackagingTSSOP-20
Interrupt OutputInterrupt Output
Operating Temperature-40℃~+85℃
Output Type-
Number of I/O8
FeaturesBuilt-in LED driver;Cascade and address expansion;Reset function
Voltage - Supply2.5V~6V
Current - Output High(IOH)-
InterfaceI2C
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Additional Information

TypeDetails
Minimum1
Multiple1
Standard Packaging70
Sales UnitPiece

Introduction

AI Translation

This 8-bit input/output (I/O) expander for the two-wire bidirectional bus (I²C) is designed to operate between 2.5V and 6V VCC. The PCF8574A device provides general-purpose remote I/O expansion for most microcontroller families through the I²C interface [serial clock (SCL), serial data (SDA)]. The device features an 8-bit quasi-bidirectional I/O port (P0–P7), which includes latched outputs with high-current drive capability for directly driving LEDs. Each quasi-bidirectional I/O can be used as an input or an output (without the need for a data direction control signal). Upon power-up, these I/Os are at a high level. In this mode, only a current source connected to VCC is active.

Features

AI Translation
  • 10 μA low standby current consumption (maximum)
  • I2C to parallel port expander
  • Open-drain interrupt output
  • Compatible with most microcontrollers
  • Latched outputs with high-current drive capability for direct LED driving
  • Latch-up performance exceeds 100mA per JESD 78 Class II

Applications

AI Translation
  • Telecom shelters: filter units
  • Servers
  • Routers (telecom switching equipment)
  • Personal computers
  • Personal electronics
  • Industrial automation
  • Products with GPIO-constrained processors