PCA9549 Просмотр технического описания (PDF) - NXP Semiconductors.
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PCA9549 Datasheet PDF : 25 Pages
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NXP Semiconductors
PCA9549
Octal bus switch with individually I2C-bus controlled enables
5.2 Pin description
Table 3.
Symbol
A0
A1
RESET
1A
1B
2A
2B
3A
3B
4A
4B
VSS
5B
5A
6B
6A
7B
7A
8B
8A
A2
SCL
SDA
VDD
Pin description
Pin
SO24, TSSOP24
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
HVQFN24
22
23
24
1
2
3
4
5
6
7
8
9[1]
10
11
12
13
14
15
16
17
18
19
20
21
Description
address input 0
address input 1
active LOW reset input
input
output
input
output
input
output
input
output
supply ground
output
input
output
input
output
input
output
input
address input 2
serial clock line
serial data line
supply voltage
[1] HVQFN24 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.
PCA9549_2
Product data sheet
Rev. 02 — 13 July 2009
© NXP B.V. 2009. All rights reserved.
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