PCA9540BGD,125 NXP

PCA9540B 2 2-channel I C-bus multiplexer Rev. 7.1 19 January 2018 Product data sheet 1. General description 2 The PCA9540B is a 1-of-2 bidirectional translating multiplexer, controlled via the I C-bus. The SCL/SDA upstream pair fans out to two 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. 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 that is passed by the PCA9540B. 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 can pull the bus up to the desired voltage level for this channel. All I/O pins are 5 V tolerant. 2. Features and benefits 1-of-2 bidirectional translating multiplexer 2 I C-bus interface logic compatible with SMBus standards 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 Packages offered: SO8, TSSOP8, XSON8PCA9540B NXP Semiconductors 2 2-channel I C-bus multiplexer 3. Ordering information Table 1. Ordering information Type number Topside Package marking Name Description Version PCA9540BD PA9540B SO8 plastic small outline package 8 leads body width 3.9 mm SOT96-1 PCA9540BDP 9540B TSSOP8 plastic thin shrink small outline package 8 leads SOT505-1 body width 3 mm PCA9540BDP/Q900 9540B TSSOP8 plastic thin shrink small outline package 8 leads SOT505-1 body width 3 mm PCA9540BGD 40B XSON8 plastic extremely thin small outline package no leads SOT996-2 8 terminals body 3 2 0.5 mm 1 PCA9540BDP/Q900 is AEC-Q100 compliant. Contact your NXP account team, distribution partner or i2c.support nxp.com for PPAP. 3.1 Ordering options Table 2. Ordering options Type number Orderable part number Package Packing method Minimum Temperature order range quantity PCA9540BD PCA9540BD,118 SO8 Reel 13 Q1/T1 2500 T = 40 C to amb *Standard mark SMD +85 C PCA9540BDP PCA9540BDP,118 TSSOP8 Reel 13 Q1/T1 2500 T = 40 C to amb *Standard mark SMD +85 C PCA9540BDP/Q900 PCA9540BDP/Q900,118 TSSOP8 Reel 13 Q1/T1 2500 T = 40 C to amb *Standard mark SMD +105 C PCA9540BGD PCA9540BGD,125 XSON8 Reel 7 Q3/T4 3000 T = 40 C to amb *Standard mark +85 C PCA9540B All information provided in this document is subject to legal disclaimers. NXP Semiconductors N.V. 2018. All rights reserved. Product data sheet Rev. 7.1 19 January 2018 2 of 28