Monday, September 28, 2020

Texas Instrument with TCA4307 Hot swappable I2C bus and SMBus buffer with stuck bus recovery

Eltronicschool. -This is one of the Texas Instrument product with the name TCA4307 IC as hot swappable I2C bus and SMBus buffer with stuck bus recovery. This IC is is a hot-swappable I2C bus buffer that supports I/O card insertion into a live backplane without corruption of the data and clock lines. 

Image Courtesy of Electronics-lab


In this post we will give you global description and specification of  TCA4307 Hot swappable I2C bus and SMBus buffer with stuck bus recovery and the last we will give you the link to get more information about this product.
Description

Based on Electronicslab site describe that Texas Instruments’ TCA4307 is a hot-swappable I2C bus buffer that supports I/O card insertion into a live backplane without corruption of the data and clock lines. Control circuitry prevents the backplane-side I2C lines (in) from being connected to the card-side I2C lines (out) until a stop command or bus idle condition occurs on the backplane without bus contention on the card. When the connection is made, this device provides bidirectional buffering, keeping the backplane and card capacitances isolated. During insertion, the SDA and SCL lines are pre-charged to 1 V to minimize the current required to charge the parasitic capacitance of the device.

The TCA4307 has stuck bus recovery, which automatically disconnects the bus if it detects either SDAOUT or SCLOUT are low for about 40 ms. Once the bus is disconnected, the device automatically generates up to 16 pulses on SCLOUT to attempt to reset the device which is holding the bus low. When the I2C bus is idle, the TCA4307 can be put into shutdown mode by setting the EN-pin low, reducing power consumption. When EN is pulled high, the TCA4307 resumes normal operation. This buffer includes an open-drain READY output pin, which indicates that the backplane and card sides are connected. When READY is high, the SDAIN and SCLIN are connected to SDAOUT and SCLOUT.


Specification

Features Buffer, Enable Pin, Hot swap, Stuck bus recovery
Frequency (Max) (kHz) 400
VCCA (Min) (V) 2.3
VCCA (Max) (V) 5.5
VCCB (Min) (V) 2.3
VCCB (Max) (V) 5.5
Supply restrictions VCC Single Supply
Approx. price (US$)
1ku | 1.90
Rating Catalog
Operating temperature range (C) -40 to 125

For more information, please visit the original source using link HERE



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