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參數(shù)資料
| 型號： | PCA9546 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | 4-channel I2C switch with reset |
| 中文描述： | 4通道的I2C開關(guān)與復(fù)位 |
| 文件頁數(shù)： | 2/17頁 |
| 文件大?。?/td> | 139K |
| 代理商： | PCA9546 |
Philips Semiconductors
Product data sheet
PCA9546
4-channel I
2
C switch with reset
2
2004 Sep 30
FEATURES
1-of-4 bi-directional translating switches
I
2
C interface logic; compatible with SMBus standards
Active LOW Reset Input
3 address pins allowing up to 8 devices on the I
2
C-bus
Channel selection via I
2
C-bus, in any combination
Power–up with all switch channels deselected
Low Rds
ON
switches
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 stand-by current
Operating power supply voltage range of 2.3 V to 5.5 V
5 V tolerant Inputs
0 kHz to 400 kHz clock frequency
ESD protection exceeds 2000 V HBM per JESD22-A114,
150 V MM per JESD22-A115 and 1000 V per JESD22-C101
Latchup testing is done to JESDEC Standard JESD78 which
exceeds 100 mA
Packages offered: SO16, TSSOP16
DESCRIPTION
The PCA9546 is a quad bi-directional translating switch controlled
by the I
2
C-bus. The SCL/SDA upstream pair fans out to four
downstream pairs, or channels. Any individual SCx/SDx channel or
combination of channels can be selected, determined by the
contents of the programmable Control Register.
An active-LOW reset input allows the PCA9546 to recover from a
situation where one of the downstream I
2
C-buses is stuck in a LOW
state. Pulling the RESET pin LOW resets the I
2
C state machine and
causes all the channels to be deselected as does the internal power
on reset function.
The pass gates of the switches are constructed such that the V
DD
pin can be used to limit the maximum high voltage which will be
passed by the PCA9546. This allows the use of different bus
voltages on each 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.
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE
–40
°
C to +85
°
C
–40
°
C to +85
°
C
ORDER CODE
DRAWING NUMBER
16-Pin Plastic SO
PCA9546D
SOT109-1
16-Pin Plastic TSSOP
Standard packing quantities and other packaging data are available at www.standardproducts.philips.com/packaging.
PCA9546PW
SOT403-1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PCA9546D | 4-channel I2C switch with reset |
| PCA9546PW | 4-channel I2C switch with reset |
| PCA9549 | Octal bus switch with individually I2C-bus controlled enables |
| PCA9555N | 16-bit I2C and SMBus I/O port with interrupt |
| PCA9555 | 16-bit I2C and SMBus I/O port with interrupt |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCA9546A | 制造商:TI 制造商全稱:Texas Instruments 功能描述:4-CHANNEL I2C AND SMBus SWITCH WITH RESET FUNCTION |
| PCA9546A_1 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:4-CHANNEL I2C AND SMBus SWITCH WITH RESET FUNCTION |
| PCA9546A_2 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:4-CHANNEL I2C AND SMBus SWITCH WITH RESET FUNCTION |
| PCA9546A_3 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:4-CHANNEL I2C AND SMBus SWITCH WITH RESET FUNCTION |
| PCA9546ABS | 制造商:NXP Semiconductors 功能描述: |
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