IES5507 buffered 4-channel 2-wire bus switch
IES5507 - buffered 4-channel multiplexer for your I2C, 2-Wire, SMBus, PMBus The IES5507 is a buffered 4-channel switch in 2-wire bus applications including I2C, SMBus, PMbus, and other systems based on similar principles. Unlike other 2-wire bus switches, the IES5507 is a buffered switch and is designed to suit the standard, fast and fast mode plus application. The four outputs of the IES5507 may be independently enabled in any combination as determined by the contents of the programmable control register. Each I/O is also impedance isolated from all others, thus allowing a total of five branches of 2-wire bus with the maximum specified load. For example, in Fm+ application, a maximum capacitance loading of 5 x 400pF at 1MHz is possible. More than one IES5507 may be used in series, providing a substantial fan-out capability. The IES5507 has excellent application for expanding 2-wire bus address and increasing of maximum load capacitance. Very large LED displays are a perfect application of IES5507.
features
Each I/O is impedance isolated from all others allowing maximum capacitance on all branches 30mA static sink capability on all ports Fast switching times allow operation in excess of 1MHz Driving of large loads (eg. 5x 400pF for I2C Fm+, or 5x 4nF at lower frequencies)	Hysteresis on I/O increases noise immunity Operating voltages from 2.7V to 5.5V Compatible with I2C (Standard, Fast Mode and Fm+) Compatible with SMBus (Standard and High Power Mode) and PMBus
applications
Large arrays of I2C components LED board displays Power management systems Game consoles Computers / Servers	RAID systems Interface for buses with different operating frequency Suitable for address conflict resolution and sub branch isolation
IES5507 block diagram
I2CTM is a trademark of NXP Semiconductors B.V. SMBusTM and PMBusTM are trademarks of System Management Interface Forum (SMIF) Inc