PI4MSD5V9543A 2 Channel I2C bus switch with interrupt logic and Reset Features contents of the programmable control register. Two 1-of-2 bidirectional translating multiplexer upstream pair fans out to two downstream pairs, or the I2C-bus interface logic interrupt inputs, INT0 and INT1, one for each of the Operating power supply voltage:1.65 V to 5.5 V downstream pairs, are provided. One interrupt output, Allows voltage level translation between 1.2V, INT, which acts as an AND of the two interrupt inputs, 1.8V,2.5 V, 3.3 V and 5 V buses is provided. Low standby current An active LOW reset input allows the Low Ron switches PI4MSD5V9543A to recover from a situation where one Channel selection via I2C bus of the downstream buses is stuck in a LOW state. Power-up with all multiplexer channels deselected Pulling the RESET pin LOW resets the I2C bus state Capacitance isolation when channel disabled machine and causes all the channels to be deselected, as No glitch on power-up does the internal power-on reset function. Supports hot insertion The pass gates of the switches are constructed such 5 V tolerant inputs that the VCC pin can be used to limit the maximum high 0 Hz to 400 kHz clock frequency voltage which will be passed by the PI4MSD5V9543A. ESD protection exceeds 8000 V HBM per JESD22- This allows the use of different bus voltages on each A114, and 1000 V CDM per JESD22-C101 SCx/SDx pair, so that 1.2V,1.8 V, 2.5 V, or 3.3 V parts Latch-up testing is done to JEDEC Standard can communicate with 5 V parts without any additional JESD78 which exceeds 100 mA protection. External pull-up resistors pull the bus up to Packages offered: SOIC-14W,TSSOP-14L the desired voltage level for each channel. All I/O pins are 5 V tolerant. Description The PI4MSD5V9543A is a bidirectional translating Pin Description switch, controlled by the I2C bus. The SCL/SDA channels. Any individual SCx/SDx channels or Pin Pin combination of channels can be selected, determined by Type Description No Name 1 A0 Input address input 0 Pin Configuration 2 A1 Input address input 1 3 Input active LOW reset input RESET 4 Input active LOW interrupt input 0 INT0 I/O 5 SD0 serial data 0 6 SC0 I/O serial clock 0 Ground 7 GND supply ground TSSOP14 SOP14 8 Input active LOW interrupt input 1 INT1 I/O 9 SD1 serial data 1 10 SC1 I/O serial clock 1 11 Output active LOW interrupt output INT I/O 12 SCL serial clock line 13 SDA I/O serial data line 14 VCC Power supply voltage All trademarks are property of their respective owners. www.diodes.com 1/18/2017 2017-01-0004 PT0524-5 PI4MSD5V9543A 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 V Positive DC Supply Voltage 1.65 - 5.5 V CC CCA V GND - 5.5 V Enable Control Pin Voltage EN V GND - 5.5 V I/O Pin Voltage IO t /V Input transition rise or fall time - - 10 ns/V T 40 - +85 C Operating Temperature Range A All trademarks are property of their respective owners. www.diodes.com 1/18/2017 2017-01-0004 PT0524-5 2