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參數(shù)資料
| 型號： | PCA9510A |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Hot swappable I2C-bus and SMBus bus buffer |
| 中文描述： | 熱插拔I2C總線和SMBus總線緩沖器 |
| 文件頁數(shù)： | 4/23頁 |
| 文件大?。?/td> | 140K |
| 代理商： | PCA9510A |
PCA9510A_1
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 01 — 8 September 2005
4 of 23
Philips Semiconductors
PCA9510A
Hot swappable I
2
C-bus and SMBus bus buffer
7.
Pinning information
7.1 Pinning
7.2 Pin description
8.
Functional description
Refer to
Figure 1 “Block diagram of PCA9510A”
.
8.1 Start-up
An undervoltage and initialization circuit holds the parts in a disconnected state which
presents high-impedance to all SDAn and SCLn pins during power-up. A LOW on the
ENABLE pin also forces the parts into the low current disconnected state when the I
CC
is
essentially zero. As the power supply is brought up and the ENABLE is HIGH or the part is
powered and the ENABLE is taken from LOW to HIGH, it enters an initialization state
where the internal references are stabilized and the precharge circuit is enabled. At the
end of the initialization state the ‘Stop Bit And Bus Idle’ detect circuit is enabled. With the
ENABLE pin HIGH long enough to complete the initialization state (t
en
) and remaining
HIGH when all the SDAn and SCLn pins have been HIGH for the bus idle time or when all
pins are HIGH and a STOP condition is seen on the SDAIN and SCLIN pins, SDAIN is
connected to SDAOUT and SCLIN is connected to SCLOUT. The 1 V precharge circuitry
Fig 2.
Pin configuration for SO8
Fig 3.
Pin configuration for TSSOP8
ENABLE
V
CC
SCLOUT
SDAOUT
SCLIN
SDAIN
GND
READY
002aab782
1
2
3
4
6
5
8
7
PCA9510AD
PCA9510ADP
ENABLE
V
CC
SDAOUT
SCLOUT
SCLIN
SDAIN
GND
READY
002aab783
1
2
3
4
6
5
8
7
Table 3:
Symbol
ENABLE
Pin description
Pin
1
Description
Chip enable. Grounding this input puts the part in a Low current (< 1
μ
A)
mode. It also disables the rise time accelerators, isolates SDAIN from
SDAOUT and isolates SCLIN from SCLOUT.
serial clock output to and from the SCL bus on the card
serial clock input to and from the SCL bus on the backplane
ground supply; connect this pin to a ground plane for best results
open-drain output which pulls LOW when SDAIN and SCLIN are
disconnected from SDAOUT and SCLOUT, and goes HIGH when the two
sides are connected
serial data input to and from the SDA bus on the backplane
serial data output to and from the SDA bus on the card
power supply
SCLOUT
SCLIN
GND
READY
2
3
4
5
SDAIN
SDAOUT
V
CC
6
7
8
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| PCA9510AD | 功能描述:緩沖器和線路驅動器 HOT SWAP I2C/SMBUS BUS BUFFER RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| PCA9510AD,112 | 功能描述:緩沖器和線路驅動器 HOT SWAP I2C/SMBUS RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| PCA9510AD,118 | 功能描述:緩沖器和線路驅動器 HOT SWAP I2C/SMBUS RoHS:否 制造商:Micrel 輸入線路數(shù)量:1 輸出線路數(shù)量:2 極性:Non-Inverting 電源電壓-最大:+/- 5.5 V 電源電壓-最小:+/- 2.37 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| PCA9510AD112 | 制造商:Rochester Electronics LLC 功能描述: 制造商:NXP 功能描述: 制造商:NXP Semiconductors 功能描述: |
| PCA9510ADP | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Hot swappable I2C-bus and SMBus bus buffer |
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