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PCA9549 Datasheet(PDF) 4 Page - NXP Semiconductors |
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PCA9549 Datasheet(HTML) 4 Page - NXP Semiconductors |
4 / 24 page PCA9549_1 © Koninklijke Philips Electronics N.V. 2006. All rights reserved. Product data sheet Rev. 01 — 11 July 2006 4 of 24 Philips Semiconductors PCA9549 Octal bus switch with individually I2C-bus controlled enables 5.2 Pin description [1] HVQFN package die supply ground is connected to both the VSS pin and the exposed center pad. The VSS pin must be connected to supply ground for proper device operation. For enhanced thermal, electrical, and board-level performance, the exposed pad needs to be soldered to the board using a corresponding thermal pad on the board, and for proper heat conduction through the board thermal vias need to be incorporated in the PCB in the thermal pad region. Table 3. Pin description Symbol Pin Description SO, TSSOP HVQFN A0 1 22 address input 0 A1 2 23 address input 1 RESET 3 24 active LOW reset input 1A 4 1 input 1B 5 2 output 2A 6 3 input 2B 7 4 output 3A 8 5 input 3B 9 6 output 4A 10 7 input 4B 11 8 output VSS 12 9[1] supply ground 5B 13 10 output 5A 14 11 input 6B 15 12 output 6A 16 13 input 7B 17 14 output 7A 18 15 input 8B 19 16 output 8A 20 17 input A2 21 18 address input 2 SCL 22 19 serial clock line SDA 23 20 serial data line VDD 24 21 supply voltage |
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