PCA9516AD,118 NXP

PCA9516A 2 5-channel I C-bus hub Rev. 03 23 April 2009 Product data sheet 1. General description 2 The PCA9516A is a CMOS integrated circuit intended for application in I C-bus and SMBus systems. 2 While retaining all the operating modes and features of the I C-bus system, it permits 2 extension of the I C-bus by buffering both the data (SDAn) and the clock (SCLn) lines, thus enabling ve buses of 400 pF. 2 The I C-bus capacitance limit of 400 pF restricts the number of devices and bus length. Using the PCA9516A enables the system designer to divide the bus into ve segments off of a hub where any segment-to-segment transition sees only one repeater delay. It can also be used to run different buses at 5 V and 3.3 V or 400 kHz and 100 kHz buses where the 100 kHz bus is isolated when 400 kHz operation of the other bus is required. Two or more PCA9516As cannot be put in series. The PCA9516A design does not allow this conguration. Since there is no direction pin, slightly different legal low voltage levels are used to avoid lock-up conditions between the input and the output of each repeater in the hub. A regular LOW applied at the input of a PCA9516A will be propagated as a buffered LOW with a slightly higher value on all the enabled outputs. When this buffered LOW is applied to another PCA9515A, PCA9516A, or PCA9518A in series, the second PCA9515A, PCA9516A, or PCA9518A will not recognize it as a regular LOW and will not propagate it as a buffered LOW again. The PCA9510A/9511A/9513A/9514A and PCA9512A cannot be used in series with the PCA9515A, PCA9516A, or PCA9518A, but can be used in series with themselves since they use shifting instead of static offsets to avoid lock-up conditions. 2. Features n 5 channel, bidirectional buffer 2 n I C-bus and SMBus compatible n Active HIGH individual repeater enable input n Open-drain input/outputs n Lock-up free operation n Supports arbitration and clock stretching across the repeater 2 n Accommodates Standard-mode and Fast-mode I C-bus devices and multiple masters 2 n Powered-off high-impedance I C-bus pins n Operating supply voltage range of 2.3 V to 3.6 V 2 n 5.5 V tolerant I C-bus and enable pinsPCA9516A NXP Semiconductors 2 5-channel I C-bus hub 1 n 0 Hz to 400 kHz clock frequency n ESD protection exceeds 2000 V HBM per JESD22-A114, 200 V MM per JESD22-A115, and 1000 V CDM per JESD22-C101 n Latch-up testing is done to JEDEC Standard JESD78 which exceeds 100 mA n Packages offered: SO16 and TSSOP16 3. Ordering information Table 1. Ordering information Type number Package Name Description Version PCA9516AD SO16 plastic small outline package 16 leads SOT109-1 body width 3.9 mm PCA9516APW 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 Topside mark Temperature range PCA9516AD PCA9516AD T = - 40 C to +85 C amb PCA9516APW PA9516A T = - 40 C to +85 C amb 1. The maximum system operating frequency may be less than 400 kHz because of the delays added by the repeater. PCA9516A 3 NXP B.V. 2009. All rights reserved. Product data sheet Rev. 03 23 April 2009 2 of 19