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參數(shù)資料
| 型號： | PCA9514A |
| 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)： | 9/25頁 |
| 文件大?。?/td> | 142K |
| 代理商： | PCA9514A |
PCA9513A_PCA9514A_1
Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet
Rev. 01 — 11 October 2005
9 of 25
Philips Semiconductors
PCA9513A; PCA9514A
Hot swappable I
2
C-bus and SMBus bus buffer
8.9 Hot swapping and capacitance buffering application
Figure 8
through
Figure 11
illustrate the usage of the PCA9513A and PCA9514A in
applications that take advantage of both its hot swapping and capacitance buffering
features. In all of these applications, note that if the I/O cards were plugged directly into
the backplane, all of the backplane and card capacitances would add directly together,
making rise and fall time requirements difficult to meet. Placing a bus buffer on the edge of
each card, however, isolates the card capacitance from the backplane. For a given I/O
card, the PCA9513A and PCA9514A drive the capacitance of everything on the card, and
the backplane must drive only the capacitance of the bus buffer, which is less than 10 pF,
the connector, trace, and all additional cards on the backplane.
See Application Note AN10160, ‘Hot Swap Bus Buffer’for more information on
applications and technical assistance.
Fig 6.
Bus requirements for 3.3 V systems
Fig 7.
Bus requirements for 5 V systems
C
b
(pF)
0
400
300
100
200
002aab582
10
20
30
R
PU
(k
)
0
recommended
pull-up
rise time > 300 ns
R
max
= 24 k
C
b
(pF)
0
400
300
100
200
002aab583
10
5
15
20
R
PU
(k
)
0
recommended
pull-up
rise time > 300 ns
R
max
= 16 k
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCA9514AD | 制造商:NXP Semiconductors 功能描述: |
| PCA9514AD,112 | 功能描述:緩沖器和線路驅(qū)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| PCA9514AD,118 | 功能描述:緩沖器和線路驅(qū)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
| PCA9514ADP | 制造商:NXP Semiconductors 功能描述:IC BUFFER I2C/SMBUS 8TSSOP 制造商:NXP Semiconductors 功能描述:IC, BUFFER, I2C/SMBUS, 8TSSOP 制造商:NXP Semiconductors 功能描述:IC, BUFFER, I2C/SMBUS, 8TSSOP; Logic Device Type:Bidirectional; Supply Voltage Min:2.7V; Supply Voltage Max:5.5V; Logic Case Style:TSSOP; No. of Pins:8; Operating Temperature Min:-40C; Operating Temperature Max:85C; MSL:MSL 2 - 1 ;RoHS Compliant: Yes |
| PCA9514ADP,118 | 功能描述:緩沖器和線路驅(qū)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(fēng)格:SMD/SMT 封裝 / 箱體:MSOP-8 封裝:Reel |
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