PCA9548ABS,118 NXP

PCA9548A 2 8-channel I C-bus switch with reset Rev. 5.1 1 October 2015 Product data sheet 1. General description 2 The PCA9548A is an octal bidirectional translating switch controlled via the I C-bus. The SCL/SDA upstream pair fans out to eight 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 PCA9548A 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 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 will be passed by the PCA9548A. 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 6 V tolerant. 2. Features and benefits 1-of-8 bidirectional translating switches 2 I C-bus interface logic compatible with SMBus standards Active LOW reset input 2 Three address pins allowing up to eight 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 6 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: SO24, TSSOP24, and HVQFN24PCA9548A NXP Semiconductors 2 8-channel I C-bus switch with reset 3. Ordering information Table 1. Ordering information Type number Topside Package marking Name Description Version PCA9548ABS 548A HVQFN24 plastic thermal enhanced very thin quad flat package SOT616-1 no leads 24 terminals body 4 4 0.85 mm PCA9548AD PCA9548AD SO24 plastic small outline package 24 leads body width 7.5 mm SOT137-1 PCA9548APW PCA9548A TSSOP24 plastic thin shrink small outline package 24 leads SOT355-1 body width 4.4 mm 3.1 Ordering options Table 2. Ordering options Type number Orderable Package Packing method Minimum Temperature part number order quantity PCA9548ABS PCA9548ABS,118 HVQFN24 Reel 13 Q1/T1 6000 T = 40 Cto+85 C amb *Standard mark SMD PCA9548ABSHP HVQFN24 Reel 13 Q2/T3 6000 T = 40 Cto+85 C amb *Standard mark SMD PCA9548AD PCA9548AD,112 SO24 Standard marking 1200 T = 40 Cto+85 C amb ICs tube - DSC bulk pack PCA9548AD,118 SO24 Reel 13 Q1/T1 1000 T = 40 Cto+85 C amb *Standard mark SMD PCA9548APW PCA9548APW,112 TSSOP24 Standard marking 1575 T = 40 Cto+85 C amb ICs tube - DSC bulk pack PCA9548APW,118 TSSOP24 Reel 13 Q1/T1 2500 T = 40 Cto+85 C amb *Standard mark SMD PCA9548A All information provided in this document is subject to legal disclaimers. NXP B.V. 2015. All rights reserved. Product data sheet Rev. 5.1 1 October 2015 2 of 30