PCA6408ABSHP

Series:	--
Packaging:	Tape & Reel (TR)
Lead Free Status / RoHS Status:	--
Part Status:	Active
Moisture Sensitivity Level (MSL):	--
Number of I/O:	8
Interface:	I²C, SMBus
Interrupt Output:	Yes
Features:	POR
Output Type:	Push-Pull
Current - Output Source/Sink:	10mA, 25mA
Clock Frequency:	400kHz
Voltage - Supply:	1.65 V ~ 5.5 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	16-VFQFN Exposed Pad
Supplier Device Package:	16-HVQFN (3x3)
Base Part Number:	PCA6408

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Introduction

PCA6408ABSHP is a peripheral interface IC designed for applications that require high-speed I/O expansion. It offers 8 I/O channels and can be used in a wide range of applications, from industrial motors to complex switching systems. It is an ideal choice for environments where the number of I/O channels needs to be increased and space is a major constraint. The rugged and reliable design of the PCA6408ABSHP makes it ideal for use in any application requiring reliable and high-speed I/O expansion.

Application Fields

The PCA6408ABSHP is primarily used in fields where robust I/O (input/output) expansion is required. It is applicable in the industrial automation, automotive, aerospace and defense, and medical fields. Possible applications include industrial motor controllers, medical instrumentation, robotics, and complex switching systems. It can be used to expand the number of I/O channels, to provide greater interface flexibility in complex systems, and to add robustness to I/O expansion designs.

Working Principle

The PCA6408ABSHP is composed of two distinct parts. The first part consists of eight parallel I/O pins that can be configured as either input or output. The second part is the logic circuitry responsible for the controlling and driving of the outputs. This logic circuitry is composed of two parts: the Control Register and the Data Register. The Control Register sets the direction of the output ports, sets internal latches and enables polarity switching. The Data Register stores the output values necessary to drive the output ports. The basic operating cycle of the PCA6408ABSHP starts with a read-write cycle. On the read cycle, either the Control or Data Register is read, depending on which one is selected. On the write cycle, either the Control or Data Register is written to, depending on the register selection. This read-write cycle is repeated at a rate determined by the bus clock. Once the direction of the output ports has been set, and the desired output value has been stored in the Data Register, the actual output values are driven onto the output pins. This is done by latch enable and data enable signals from the Control Register, which cause the output latches and transistors to turn on, respectively.

Conclusion

The PCA6408ABSHP is an ideal solution for expanding the I/O interfaces of complex systems. It offers a wide range of features, a rugged and reliable design, and is applicable in a number of fields. It is also easy to use and requires very low power, making it a great choice for applications that require high-speed I/O expansion.

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