PCA9673DB,112

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Number of I/O:	16
Interface:	I²C
Interrupt Output:	Yes
Features:	POR
Output Type:	Push-Pull
Current - Output Source/Sink:	100µA, 25mA
Clock Frequency:	1MHz
Voltage - Supply:	2.3 V ~ 5.5 V
Operating Temperature:	-40°C ~ 85°C
Mounting Type:	Surface Mount
Package / Case:	24-SSOP (0.209", 5.30mm Width)
Supplier Device Package:	24-SSOP
Base Part Number:	PCA9673

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PCA9673DB,112 Application Field and Working Principle

The PCA9673DB,112 is a component from NXP Semiconductors, one of the most important semiconductor suppliers in the world. This component belongs to the category of interface - I/O expanders. It is composed of an I/O expander core, complemented with an additional 8 and 16-bit input/output (I/O) port and 16-bit timers. It implements an open drain, low current sink output, with power on reset and power down protection, and operates over a wide range of temperatures.

Application Field

The PCA9673DB,112 is suitable for low power embedded and portable applications. It is particularly suitable for remote control applications and user interface control, such as laptop computers, small digital cameras, and tablet PCs. Its small footprint is suitable for applications with space constraints. Its low power operation remains attractive to a wide variety of portable and battery-powered devices.

Working Principle

The PCA9673DB,112 I/O Expander is an integrated low-current sink output I/O solution that is used to extend the input and output interfaces of a microcontroller or other controller in a single chip solution. It is designed to have an output on-resistance of 0.8 ohms, and provides thermal protection, power on reset, and power down protection. It can operate over a wide temperature range from -40°C to +85°C.The device contains 16 bits of timer input that can be used to program various timer functions, such as timers for wake-up applications, timers for external events, and internal counters for optimal power efficiency. The PCA9673DB,112 also features a low 115 nA standby current for low power consumption.

Conclusion

The PCA9673DB,112 is a single-chip, low-power I/O expander suitable for embedded and portable applications. It contains 16 bits of timer input and can be programmed using various timer functions, such as wake-up timers, external event timers and internal counters. The device is compact, cost effective and operates over a wide temperature range from -40°C to +85°C. PCA9673DB,112 is the ideal solution for low power applications needing interface and I/O expansion.

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