PI4MSD5V9546A 4 Channel I2C bus Switch with Reset Features Description 1-of-4 bidirectional translating multiplexer The PI4MSD5V9546A is a quad bidirectional translating I2C-bus interface logic switch controlled via the I2C bus. The SCL/SDA upstream Operating power supply voltage:1.65 V to 5.5 V pair fans out to four downstream pairs, or channels. Any Allows voltage level translation between 1.2V, 1.8V,2.5 individual SCx/SDx channel or combination of channels can V, 3.3 V and 5 V buses be selected, determined by the contents of the programmable Low standby current control register. Low Ron switches An active LOW reset input allows the PI4MSD5V-9546A Channel selection via I2C bus to recover from a situation where one of the downstream Power-up with all multiplexer channels deselected buses is stuck in a LOW state. Pulling the RESET pin LOW Capacitance isolation when channel disabled resets the I2C bus state machine and causes all the channels to No glitch on power-up be deselected as does the internal Power-On Reset (POR) Supports hot insertion function. 5 V tolerant inputs The pass gates of the switches are constructed such that the 0 Hz to 400 kHz clock frequency VCC pin can be used to limit the maximum high voltage ESD protection exceeds 8000 V HBM per JESD22- which is passed by the PI4MSD5V9546A. This allows the use A114, and 1000 V CDM per JESD22-C101 of different bus voltages on each pair, so that1.2V, 1.8 V or Latch-up testing is done to JEDEC Standard JESD78 2.5 V or 3.3 V parts can communicate with 5 V parts without which exceeds 100 mA any additional protection. External pull-up resistors pull the Packages offered: SOIC-16W,TSSOP-16L, TQFN4*4- bus up to the desired voltage level for each channel. All I/O 16ZY pins are 5 V tolerant. Pin Configuration Pin Description Pin No. Pin No. Pin (TSSOP, Type Description (TQFN) Name SOIC) 1 15 A0 Input address input 0 2 16 A1 Input address input 1 TSSOP active LOW reset 3 1 Input RESET SOIC pin 4 2 SD0 I/O serial data 0 5 3 SC0 I/O serial clock 0 6 4 SD1 I/O serial data 1 7 5 SC1 I/O serial clock 1 8 6 GND Ground supply ground 9 7 SD2 I/O serial data 2 10 8 SC2 I/O serial clock 2 11 9 SD3 I/O serial data 3 TQFN 12 10 SC3 I/O serial clock 3 13 11 A2 Input address input 2 14 12 SCL I/O serial clock line 15 13 SDA I/O serial data line 16 14 VCC Power supply voltage All trademarks are property of their respective owners. www.diodes.com 1/18/2017 2017-01-0005 PT0527-5 1 PI4MSD5V9546A 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 I/O Pin Voltage GND - 5.5 V IO t /V - - 10 ns/V Input transition rise or fall time T 40 - +85 C A Operating Temperature Range All trademarks are property of their respective owners. www.diodes.com 1/18/2017 2017-01-0005 PT0527-5 2