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參數(shù)資料
| 型號： | PCA9518 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Expandable 5-channel I2C hub |
| 中文描述： | 擴充5通道的I2C樞紐 |
| 文件頁數(shù)： | 2/12頁 |
| 文件大?。?/td> | 109K |
| 代理商： | PCA9518 |
Philips Semiconductors
Product data sheet
PCA9518
Expandable 5-channel I
2
C hub
2
2004 Sep 29
DESCRIPTION
The PCA9518 is a BiCMOS integrated circuit intended for
application in I
2
C and SMBus systems.
While retaining all the operating modes and features of the I
2
C
system, it permits extension of the I
2
C-bus by buffering both the
data (SDA) and the clock (SCL) lines, thus enabling virtually
unlimited buses of 400 pF.
The I
2
C-bus capacitance limit of 400 pF restricts the number of
devices and bus length. Using the PCA9518 enables the system
designer to divide the bus into an unlimited number of segments off
of a hub where any segment to segment transition sees only one
repeater delay and is multiple master capable on each segment.
Using multiple PCA9518 parts, any width hub (in multiples of five)
1
can be implemented using the expansion pins.
A PCA9518 cluster cannot be put in series with a PCA9515/16
or with another PCA9518 cluster.
Multiple PCA9518 devices can
be grouped with other PCA9518 devices into any size cluster thanks
to the EXPxxxx pins that allow the I2C signals to be sent/received
from/to one PCA9518 to/from another PCA9518 within the cluster.
Since there is no direction pin, slightly different “l(fā)egal” low voltage
levels are used to avoid lock up conditions between the input and
the output of individual repeaters in the cluster. A “regular low”
applied at the input of any of the PCA9518 devices will then be
propagated as a “buffered low” with a slightly higher value to all
enabled outputs in the PCA9518 cluster. When this “buffered low” is
applied to a PCA9515 and PCA9516 or separate PCA9518 cluster
(not connected via the EXPxxx pins) in series, the second PCA9515
and PCA9516 or PCA9518 cluster will not recognize it as a “regular
low” and will not propagate it as a “buffered low ” again. The
PCA9510/9511/9513/9514 and PCA9512 cannot be used in series
with the PCA9515 and PCA9516 or PCA9518 but can be used in
series with themselves since they use shifting instead of static
offsets to avoid lock up conditions.
FEATURES
Expandable 5 channel, bi-directional buffer
I
2
C-bus and SMBus compatible
Active-HIGH individual repeater enable inputs
Open-drain input/outputs
Lock-up free operation
Supports arbitration and clock stretching across the repeater
Accommodates standard mode and fast mode I
2
C devices and
multiple masters
Powered-off high-impedance I
2
C pins
Operating supply voltage range of 3.0 V to 3.6 V
5 V tolerant I
2
C and enable pins
0 kHz to 400 kHz clock frequency
2
ESD protection exceeds 2000 V HBM per JESD22-A114,
200 V MM per JESD22-A115, and 1000 V CDM per
JESD22-C101.
Latch-up testing is done to JEDEC Standard JESD78 which
exceeds 100 mA.
Package offerings: SO and TSSOP
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE
20-pin plastic SO
20-pin plastic TSSOP
Standard packing quantities and other packaging data is available at www.standardproducts.philips.com/packaging.
PIN CONFIGURATION
10
1
2
3
4
5
6
7
8
9
11
12
13
14
15
16
17
18
19
20
EXPSCL1
EXPSCL2
SCL0
SDA0
SCL1
SDA1
EN1
SCL2
SDA2
GND
V
CC
EN4
SDA4
SCL4
EN3
SDA3
SCL3
EXPSDA2
EN2
EXPSDA1
SU01595
Figure 1. Pin configuration
PIN DESCRIPTION
PIN
1
EXPSCL1
2
EXPSCL2
3
SCL0
4
SDA0
5
SCL1
6
SDA1
7
EN1
8
SCL2
9
SDA2
10
GND
11
EN2
12
SCL3
13
SDA3
14
EN3
15
SCL4
16
SDA4
17
EN4
18
EXPSDA1
19
EXPSDA2
20
V
CC
SYMBOL
FUNCTION
Expandable serial clock pin 1
Expandable serial clock pin 2
Serial clock bus 0
Serial data bus 0
Serial clock bus 1
Serial data bus 1
Active-HIGH Bus 1 enable Input
Serial clock bus 2
Serial data bus 2
Supply ground
Active-HIGH Bus 2 enable Input
Serial clock bus 3
Serial data bus 3
Active-HIGH Bus 3 enable Input
Serial clock bus 4
Serial data bus 4
Active-HIGH Bus 4 enable Input
Expandable serial data pin 1
Expandable serial data pin 2
Supply power
ORDER CODE
PCA9518D
PCA9518PW
TOPSIDE MARK
PCA9518D
PCA9518
DRAWING NUMBER
SOT163-1
SOT360-1
–40
°
C to +85
°
C
–40
°
C to +85
°
C
1.
2.
Only four ports per device are available if individual Enable is required.
The maximum system operating frequency may be less than 400 kHz because of the delays added by the repeater.
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| PCA9533 | 4-bit I2C LED dimmer |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCA9518A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Expandable 5-channel I2C-bus hub |
| PCA9518AD | 功能描述:接口-I/O擴展器 EXPNDBL 5-CH I2C HUB RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel |
| PCA9518AD,112 | 功能描述:接口-I/O擴展器 EXPNDBL 5-CH I2C HUB RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel |
| PCA9518AD,118 | 功能描述:接口-I/O擴展器 EXPNDBL 5-CH I2C HUB RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel |
| PCA9518AD-T | 功能描述:接口-I/O擴展器 EXPNDBL 5-CH I2C HUB RoHS:否 制造商:NXP Semiconductors 邏輯系列: 輸入/輸出端數(shù)量: 最大工作頻率:100 kHz 工作電源電壓:1.65 V to 5.5 V 工作溫度范圍:- 40 C to + 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:HVQFN-16 封裝:Reel |
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