PI4MSD5V9540B 2 Channel I2C bus Multiplexer Features Description 1-of-2 bidirectional translating multiplexer The PI4MSD5V9540B is a 1-of-2 bidirectional I2C-bus interface logic translating multiplexer, controlled via the I2C bus Operating power supply voltage:1.65 V to 5.5 V The SCL/SDA upstream pair fans out to two Allows voltage level translation between 1.2V, SCx/SDx downstream pairs, or channels. Only one 1.8V,2.5 V, 3.3 V and 5 V buses SCx/SDx channel is selected at a time, determined Low standby current by the contents of the programmable control register. Low Ron switches A power-on reset function puts the registers in their Channel selection via I2C bus default state and initializes the I2C bus state machine Power-up with all multiplexer channels deselected with no channels selected. Capacitance isolation when channel disabled The pass gates of the multiplexer are constructed No glitch on power-up such that the VCC pin can be used to limit the maximum Supports hot insertion high voltage that is passed by the PI4MSD5V9540B. 5 V tolerant inputs This allows the use of different bus voltages on each 0 Hz to 400 kHz clock frequency SCx/SDx pair, so that1.2V, 1.8 V, 2.5 V or 3.3 V parts ESD protection exceeds 8000 V HBM per JESD22- can communicate with 5 V parts without any additional A114, and 1000 V CDM per JESD22-C101 protection. External pull-up resistors can pull the bus up Latch-up testing is done to JEDEC Standard to the desired voltage level for this channel. All I/O pins JESD78 which exceeds 100 mA are 5 V tolerant. Packages offered: SOIC-8W,MSOP- 8U,TDFN2x3-8ZE Pin Configuration Pin Description Pin No Pin Name Type Description 1 SCL I/O serial clock line MSOP 2 SDA I/O serial data line SOIC 3 VCC Power supply voltage 4 SD0 I/O serial data 0 5 SC0 I/O serial clock 0 6 GND GND supply ground 7 SD1 I/O serial data 1 TDFN 8 SC1 I/O serial clock 1 All trademarks are property of their respective owners. www.diodes.com 1/18/2017 2017-01-0003 PT0522-5 1 PI4MSD5V9540B Block Diagram Figure 1: Block Diagram Maximum Ratings Note: Storage Temperature .................................................55C to +125C Stresses greater than those listed under MAXIMUM Supply Voltage port B .................................................0.5V to +6.0V RATINGS may cause permanent damage to the Supply Voltage port A ................................................0.5V to +6.0V device. This is a stress rating only and functional DC Input Voltage ....................................................... 0.5V to +6.0V operation of the device at these or any other condi- Control Input Voltage (EN) .................................. 0.5V to +6.0V tions above those indicated in the operational sec- (1) Total power dissipation .......................................................100mW tions of this specification is not implied. Exposure Input current(EN,VCCA,VCCB,GND).....................................50mA to absolute maximum rating conditions for extended ESD: HBM Mode .....................................................................8000V periods may affect reliability. Recommended operation conditions Symbol Parameter Min Typ Max Unit V 1.65 - 5.5 V V Positive DC Supply Voltage CC CCA V GND - 5.5 V Enable Control Pin Voltage EN V GND - 5.5 V IO I/O Pin Voltage t /V - - 10 ns/V Input transition rise or fall time T 40 - +85 C Operating Temperature Range A All trademarks are property of their respective owners. www.diodes.com 1/18/2017 2017-01-0003 PT0522-5 2