參數(shù)資料
型號(hào)： PCA9512
廠商： NXP Semiconductors N.V.
英文描述： Level shifting hot swappable I2C and SMBus buffer
中文描述： 電平移動(dòng)熱插拔I2C和SMBus緩沖器
文件頁(yè)數(shù)： 7/16頁(yè)
文件大?。?/td> 176K
代理商： PCA9512
Philips Semiconductors
Product data sheet
PCA9512
Level shifting hot swappable I
2
C and SMBus buffer
2004 Oct 05
7
Hot Swapping and Capacitance Buffering
Application
Figures 7 through 9 illustrate the usage of the PCA9512 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
PCA9512 on the edge of each card, however, isolates the card
capacitance from the backplane. For a given I/O card, the PCA9512
drives the capacitance of everything on the card and the backplane
must drive only the 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 Bufferfor more
information on applications and technical assistance.
C1
0.01
μ
F
R4
10 k
R5
10 k
POWER SUPPLY
HOT SWAP
I/O PERIPHERAL CARD 1
R6
10 k
R3 5.1
C2
0.01
μ
F
V
CC
V
CC2
SDAIN
SCLIN
SDAOUT
SCLOUT
ACC
GND
CARD1_SDA
CARD1_SCL
PCA9512
C3
0.01
μ
F
R8
10 k
R9
10 k
POWER SUPPLY
HOT SWAP
I/O PERIPHERAL CARD 2
R10
10 k
R7 5.1
C4
0.01
μ
F
V
CC
V
CC2
SDAIN
SCLIN
SDAOUT
SCLOUT
ACC
GND
CARD2_SDA
CARD2_SCL
PCA9512
C5
0.01
μ
F
R12
10 k
R13
10 k
POWER SUPPLY
HOT SWAP
I/O PERIPHERAL CARD N
R14
10 k
C6
0.01
μ
F
V
CC
V
CC2
SDAIN
SCLIN
SDAOUT
SCLOUT
ACC
GND
CARDN_SDA
CARDN_SCL
PCA9512
R1
10 k
R2
10 k
V
CC2
V
CC
SDA
SCL
BD_SEL
BACKPLANE
BACKPLANE
CONNECTOR
SW02117
R11 5.1
S
S
S
NOTE:
Application assumes bus capacitance within “proper operation” region of Figures 5 and 6.
Figure 7. Hot swapping multiple I/O cards into a backplane using the PCA9512 in a CompactPCI, VME, and AdvancedTCA system
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PCA9512A 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Level shifting hot swappable I2C-bus and SMBus bus buffer
PCA9512AD 制造商:PHILIPS-SEMI 功能描述:
PCA9512AD,112 功能描述:緩沖器和線路驅(qū)動(dòng)器 LEVSHIFT I2C/SMBUS BUFF 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
PCA9512AD,118 功能描述:緩沖器和線路驅(qū)動(dòng)器 LEVSHIFT 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
PCA9512AD112 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:
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