PCA9544APW,112 NXP

PCA9544A 2 4-channel I C-bus multiplexer with interrupt logic Rev. 5 23 April 2014 Product data sheet 1. General description 2 The PCA9544A is a 1-of-4 bidirectional translating multiplexer, controlled via the I C-bus. The SCL/SDA upstream pair fans out to four SCx/SDx downstream pairs, or channels. Only one SCx/SDx channel is selected at a time, determined by the contents of the programmable control register. Four interrupt inputs, INT0 to INT3, one for each of the SCx/SDx downstream pairs, are provided. One interrupt output, INT, which acts as an AND of the four interrupt inputs, is provided. 2 A power-on reset function puts the registers in their default state and initializes the I C-bus state machine with no channels selected. The pass gates of the multiplexer are constructed such that the V pin can be used to DD limit the maximum high voltage which is passed by the PCA9544A. This allows the use of different bus voltages on each SCx/SDx pair, so that 1.8 V, 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 multiplexer 2 I C-bus interface logic compatible with SMBus 4 active LOW interrupt inputs Active LOW interrupt output 2 3 address pins allowing up to 8 devices on the I C-bus 2 Channel selection via I C-bus Power-up with all multiplexer 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: SO20, TSSOP20 and HVQFN20PCA9544A NXP Semiconductors 2 4-channel I C-bus multiplexer with interrupt logic 3. Ordering information Table 1. Ordering information Type number Topside Package marking Name Description Version PCA9544ABS 9544A HVQFN20 plastic thermal enhanced very thin quad flat package SOT662-1 no leads 20 terminals body 5 5 0.85 mm PCA9544AD PCA9544AD SO20 plastic small outline package 20 leads body width 7.5 mm SOT163-1 PCA9544APW PA9544A TSSOP20 plastic thin shrink small outline package 20 leads SOT360-1 body width 4.4 mm 3.1 Ordering options Table 2. Ordering options Type number Orderable Package Packing method Minimum Temperature range part number order quantity PCA9544ABS PCA9544ABS,118 HVQFN20 Reel 13 Q1/T1 6000 T = 40 C to +85 C amb *Standard mark SMD PCA9544AD PCA9544AD,112 SO20 Standard marking 1520 T = 40 C to +85 C amb * ICs tube - DSC bulk pack PCA9544AD,118 SO20 Reel 13 Q1/T1 2000 T = 40 C to +85 C amb *Standard mark SMD PCA9544APW PCA9544APW,112 TSSOP20 Standard marking 1875 T = 40 C to +85 C amb * ICs tube - DSC bulk pack PCA9544APW,118 TSSOP20 Reel 13 Q1/T1 2500 T = 40 C to +85 C amb *Standard mark SMD PCA9544A All information provided in this document is subject to legal disclaimers. NXP Semiconductors N.V. 2014. All rights reserved. Product data sheet Rev. 5 23 April 2014 2 of 31