PCA9546AD,118

PCA9546A 2 4-channel I C-bus switch with reset Rev. 6 30 April 2014 Product data sheet 1. General description 2 The PCA9546A is a quad bidirectional translating switch controlled via the I C-bus. The SCL/SDA upstream pair fans out to four downstream pairs, or channels. Any individual SCx/SDx channel or combination of channels can be selected, determined by the contents of the programmable control register. An active LOW reset input allows the PCA9546A to recover from a situation where one of 2 the downstream I C-buses is stuck in a LOW state. Pulling the RESET pin LOW resets 2 the I C-bus state machine and causes all the channels to be deselected as does the internal Power-On Reset (POR) function. The pass gates of the switches are constructed such that the V pin can be used to limit DD the maximum high voltage which is passed by the PCA9546A. This allows the use of different bus voltages on each pair, so that 1.8 V or 2.5 V or 3.3 V parts can communicate with 5 V parts without any additional protection. External pull-up resistors pull the bus up to the desired voltage level for each channel. All I/O pins are 5 V tolerant. 2. Features and benefits 1-of-4 bidirectional translating switches 2 I C-bus interface logic compatible with SMBus standards Active LOW reset input 2 3 address pins allowing up to 8 devices on the I C-bus 2 Channel selection via I C-bus, in any combination Power-up with all switch channels deselected Low R switches on Allows voltage level translation between 1.8 V, 2.5 V, 3.3 V and 5 V buses No glitch on power-up Supports hot insertion Low standby current Operating power supply voltage range of 2.3 V to 5.5 V 5 V tolerant Inputs 0 Hz to 400 kHz clock frequency ESD protection exceeds 2000 V HBM per JESD22-A114 and 1000 V CDM per JESD22-C101 Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA Three packages offered: SO16, TSSOP16, and HVQFN16PCA9546A NXP Semiconductors 2 4-channel I C-bus switch with reset 3. Ordering information Table 1. Ordering information Type number Topside Package marking Name Description Version PCA9546ABS 546A HVQFN16 plastic thermal enhanced very thin quad flat package SOT629-1 no leads 16 terminals body 4 4 0.85 mm PCA9546AD PCA9546AD SO16 plastic small outline package 16 leads body width 3.9 mm SOT109-1 PCA9546APW PA9546A TSSOP16 plastic thin shrink small outline package 16 leads SOT403-1 body width 4.4 mm 3.1 Ordering options Table 2. Ordering options Type number Orderable part Package Packing method Minimum Temperature range number order quantity PCA9546ABS PCA9546ABS,118 HVQFN16 Reel 13 Q1/T1 6000 T = 40 Cto+85 C amb *Standard mark SMD PCA9546AD PCA9546AD,112 SO16 Standard marking 1000 T = 40 Cto+85 C amb * ICs tube - DSC bulk pack PCA9546AD,118 SO16 Reel 13 Q1/T1 2500 T = 40 Cto+85 C amb *Standard mark SMD PCA9546APW PCA9546APW,112 TSSOP16 Standard marking 2400 T = 40 Cto+85 C amb * ICs tube - DSC bulk pack PCA9546APW,118 TSSOP16 Reel 13 Q1/T1 2500 T = 40 Cto+85 C amb *Standard mark SMD PCA9546A All information provided in this document is subject to legal disclaimers. NXP Semiconductors N.V. 2014. All rights reserved. Product data sheet Rev. 6 30 April 2014 2 of 30