PCA9517DP,118

Delay Time:	--
Base Part Number:	PCA9517
Supplier Device Package:	8-TSSOP
Package / Case:	8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Operating Temperature:	-40°C ~ 85°C
Current - Supply:	5mA
Voltage - Supply:	2.7 V ~ 5.5 V
Capacitance - Input:	6pF
Signal Conditioning:	--
Series:	--
Number of Channels:	2
Data Rate (Max):	400kHz
Output:	2-Wire Bus
Input:	2-Wire Bus
Applications:	I²C
Type:	Buffer, ReDriver
Part Status:	Active
Packaging:	Tape & Reel (TR)

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PCA9517DP, 118 Application Field and Working PrincipleThe PCA9517DP, 118 is an interface-signal buffer, repeater, and splitter manufactured by Texas Instruments. The device functions as a device-level bridge between two buses, allowing the devices on one bus to communicate with those on the other bus while providing electrical isolation. The PCA9517DP, 118 provides means to increase the distance between buses, thus allowing buses to be remotely located. This device can be used in either consumer electronic or industrial automation circuits, allowing for the connection of multiple buses and peripherals simultaneously.The device can be configured to either buffer or drive any of four I/O lines or isolate any combination of them. The four I/O lines are divided up into two busses, the A bus and the B bus. All four I/O lines are always driven, and the direction of the drive is determined by the configuration of the device. If the I/O lines are configured as buffers, only the A bus is driven. If the I/O lines are configured as drivers, they will drive the A and B buses in opposite direction.The PCA9517DP, 118 uses open-drain logic, which provides the ability to output a low signal but not a high signal. This is accomplished using an N-channel MOSFET, which is connected to a pull-up resistor. When the input of the PCA9517DP, 118 is high, the MOSFET is off, the pull-up resistor is in effect and the output of the device is high. When the input of the PCA9517DP, 118 is low, the MOSFET turns on and the pull-up resistor is disconnected, resulting in a low output from the device.The device also features an auto-fault feature, which can detect power-related hardware or software problems. If a problem is detected, the auto-fault feature will cause the device to change its output state to low in order to protect the device from damage due to over-current or over-voltage. The auto-fault feature can be used to protect the entire system from damage due to failures in the system.The PCA9517DP, 118 is a highly integrated device that can be used in a variety of applications. It is ideal for applications that require electrical isolation and long buses. The device\'s open-drain logic makes it a suitable choice for applications that require driving the I/O lines in different directions and the auto-fault feature makes it a reliable choice for protecting the entire system from faults.

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