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參數(shù)資料
| 型號： | 935272002118 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 編、解碼器及復(fù)用、解復(fù)用 |
| 英文描述： | 2 LINE TO 1 LINE MULTIPLEXER, TRUE OUTPUT, PQCC20 |
| 封裝： | 5 X 5 MM, 0.85 MM HEIGHT, HEAT SINK, PLASTIC, MO-220, SOT-662-1, VQFN-20 |
| 文件頁數(shù)： | 9/16頁 |
| 文件大?。?/td> | 137K |
| 代理商： | 935272002118 |
Philips Semiconductors
Product data
PCA9544
4-channel I2C multiplexer with interrupt logic
2
2002 Jul 26
853–2178 28672
FEATURES
1-of-4 bi-directional translating multiplexer
I2C interface logic; compatible with SMBus
4 Active Low Interrupt Inputs
Active Low Interrupt Output
3 address pins allowing up to 8 devices on the I2C bus
Channel selection via I2C bus
Power up with all multiplexer 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 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
Three packages offered: SO20, TSSOP20, and HVQFN20
DESCRIPTION
The PCA9544 is a 1-of-4 bi-directional translating multiplexer,
controlled via the I2C bus. The SCL/SDA upstream pair fans out to
four SCx/SDx downstream pairs, or channels. Only one SCx/SDx
channel is selected at a time, determined by the contents of the
programmable control register. Four interrupt inputs, INT0 to INT3,
one for each of the SCx/SDx downstream pairs, are provided. One
interrupt output, INT, which acts as an AND of the four interrupt
inputs, is provided.
A power-on reset function puts the registers in their default state and
initializes the I2C state machine with no channels selected.
The pass gates of the multiplexer are constructed such that the VDD
pin can be used to limit the maximum high voltage which will be
passed by the PCA9544. This allows the use of different bus
voltages on each SCx/SDx 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
ORDER CODE
TOPSIDE MARK
DRAWING NUMBER
20-Pin Plastic SO
–40 to +85
°C
PCA9544D
SOT163-1
20-Pin Plastic TSSOP
–40 to +85
°C
PCA9544PW
PCA9544
SOT360-1
20-Pin Plastic HVQFN
–40 to +85
°C
PCA9544BS
9544
SOT662-1
Standard packing quantities and other packaging data are available at www.philipslogic.com/packaging.
I2C is a trademark of Philips Semiconductors Corporation.
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