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PCA9512A

NXP
Part Number PCA9512A
Manufacturer NXP
Description Level shifting hot swappable I2C-bus and SMBus bus buffer
Published Sep 4, 2017
Detailed Description PCA9512A; PCA9512B Level shifting hot swappable I2C-bus and SMBus bus buffer Rev. 6 — 1 March 2013 Product data sheet...
Datasheet PDF File PCA9512A PDF File

PCA9512A
PCA9512A

Overview
PCA9512A; PCA9512B Level shifting hot swappable I2C-bus and SMBus bus buffer Rev.
6 — 1 March 2013 Product data sheet 1.
General description The PCA9512A/B is a hot swappable I2C-bus and SMBus buffer that allows I/O card insertion into a live backplane without corruption of the data and clock buses and includes two dedicated supply voltage pins to provide level shifting between 3.
3 V and 5 V systems while maintaining the best noise margin for each voltage level.
Either pin may be powered with supply voltages ranging from 2.
7 V to 5.
5 V with no constraints on which supply voltage is higher.
Control circuitry prevents the backplane from being connected to the card until a stop bit or bus idle occurs on the backplane without bus contention on the card.
When the connection is made, the PCA9512A/B provides bidirectional buffering, keeping the backplane and card capacitances isolated.
Both the PCA9512A and PCA9512B use identical silicon (PCN201012007F dated 13 Dec 2010), so the PCA9512...


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