PI4MSD5V9548A 8 Channel I2C bus Switch with Reset Features Description 1-of-8 bidirectional translating switch The PI4MSD5V9548A is an octal bidirectional translating I2C-bus interface logic switch controlled via the I2C bus. The SCL/SDA upstream Operating power supply voltage from 1.65V to 5.5V pair fans out to eight 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 PI4MSD5V9548A Active LOW reset input to recover from a situation where one of the downstream Channel selection via I2C bus buses is stuck in a LOW state. Pulling the RESET pin LOW Power-up with all switches channels deselected resets the I2C bus state machine and causes all the channels to Capacitance isolation when channel disabled be deselected as does the internal Power-on reset function. No glitch on power-up The pass gates of the switches are constructed such that Supports hot insertion the VCC pin can be used to limit the maximum high voltage 5 V tolerant inputs which will be passed by the PI4MSD5V9548A. This allows 0 Hz to 400 kHz clock frequency the use of different bus voltages on each pair, so that 1.2V,1.8 ESD protection exceeds 8000 V HBM per JESD22- V or 2.5 V or 3.3 V parts can communicate with 5 V parts A114, and 1000 V CDM per JESD22-C101 without any additional protection. External pull-up resistors Latch-up testing is done to JEDEC Standard JESD78 pull the bus up to the desired voltage level for each channel. which exceeds 100 mA All I/O pins are 5 V tolerant. Packages offered: TSSOP-24L,TQFN-24ZD Pin Description Pin No. Pin No. Pin Pin Configuration (TSSOP, Type Description (TQFN) Name SOIC) 1 22 A0 I address input 0 2 23 A1 I address input 1 active LOW reset 3 24 I RESET input 4 1 SD0 I/O serial data 0 TSSOP T 5 2 SC0 I/O serial clock 0 6 3 SD1 I/O serial data 1 7 4 SC1 I/O serial clock 1 8 5 SD2 I/O serial data 2 9 6 SC2 I/O serial clock 2 10 7 SD3 I/O serial data 3 11 8 SC3 I/O serial clock 3 12 9 GND Ground supply ground 13 10 SD4 I/O serial data 4 14 11 SC4 I/O serial clock 4 15 12 SD5 I/O serial data 5 16 13 SC5 I/O serial clock 5 17 14 SD6 I/O serial data 6 18 15 SC6 I/O serial clock 6 TQFN 19 16 SD7 I/O serial data 7 20 17 SC7 I/O serial clock 7 21 18 A2 I address input 2 22 19 SCL I/O serial clock line 23 20 SDA I/O serial data line 24 21 VCC Power supply voltage All trademarks are property of their respective owners. www.diodes.com 1/18/2017 2017-01-0002 PT0545-5 1 PI4MSD5V9548A 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,VCC,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 EN Enable Control Pin Voltage V GND - 5.5 V I/O Pin Voltage IO 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 2017-01-0002 PT0545-5 2