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參數(shù)資料
| 型號： | PCA9548PW |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 通用總線功能 |
| 英文描述： | 8-channel I2C switch with reset |
| 中文描述： | 9548 SERIES, 8 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PDSO24 |
| 封裝： | 4.40 MM, PLASTIC, SOT-355-1, MO-153, TSSOP-24 |
| 文件頁數(shù)： | 2/16頁 |
| 文件大?。?/td> | 125K |
| 代理商： | PCA9548PW |
Philips Semiconductors
Product data sheet
PCA9548
8-channel I
2
C switch with reset
2
2004 Sep 30
FEATURES
1-of-8 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: SO24, TSSOP24
DESCRIPTION
The PCA9548 is a octal bi-directional translating switch controlled
by the I
2
C-bus. The SCL/SDA upstream pair fans out to eight
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 PCA9548 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 I2C 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 PCA9548. 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
24-Pin Plastic SO
PCA9548D
SOT137-1
24-Pin Plastic TSSOP
Standard packing quantities and other packaging data are available at www.standardproducts.philips.com/packaging.
PCA9548PW
SOT355-1
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| PCA9549 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Octal bus switch with individually I2C-bus controlled enables |
| PCA9549BS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Octal bus switch with individually I2C-bus controlled enables |
| PCA9549BS,118 | 功能描述:數(shù)字總線開關 IC 8-BIT I2C BUS SWITCH RoHS:否 制造商:Texas Instruments 開關數(shù)量:24 傳播延遲時間:0.25 ns 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TSSOP-56 封裝:Reel |
| PCA9549BS-T | 功能描述:數(shù)字總線開關 IC 8-BIT I2C BUS SWITCH W/RESET RoHS:否 制造商:Texas Instruments 開關數(shù)量:24 傳播延遲時間:0.25 ns 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TSSOP-56 封裝:Reel |
| PCA9549D | 功能描述:數(shù)字總線開關 IC 8-BIT I2C BUS SWITCH W/RESET RoHS:否 制造商:Texas Instruments 開關數(shù)量:24 傳播延遲時間:0.25 ns 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:TSSOP-56 封裝:Reel |
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