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參數(shù)資料
| 型號(hào)： | PCA9512D |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 其它接口 |
| 英文描述： | Level shifting hot swappable I2C and SMBus buffer |
| 中文描述： | SPECIALTY INTERFACE CIRCUIT, PDSO8 |
| 封裝： | 3.90 MM, PLASTIC, MS-012, SOT-96-1, SOP-8 |
| 文件頁(yè)數(shù)： | 2/16頁(yè) |
| 文件大?。?/td> | 176K |
| 代理商： | PCA9512D |
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Philips Semiconductors
Product data sheet
PCA9512
Level shifting hot swappable I
2
C and SMBus buffer
2
2004 Oct 05
DESCRIPTION
The PCA9512 is a hot swappable I
2
C and SMBus buffer that allows
I/O card insertion into a live backplane without corruption of the data
and clock buses and includes two dedicated supply voltage pins to
provide level shifting between 3.3 V and 5 V systems while
maintaining the best noise margin for each voltage level. Either pin
may be powered with supply voltages ranging from 2.7 V to 5.5 V
with no constraints on which supply voltage is higher. Control
circuitry prevents the backplane from being connected to the card
until a stop bit or bus idle occurs on the backplane without bus
contention on the card. When the connection is made, the PCA9512
provides bi-directional buffering, keeping the backplane and card
capacitances isolated.
The dynamic offset design of the PCA9510/11/12/13/14 I/O drivers
allow them to be connected to another PCA9510/11/12/13/14 device
in series or in parallel and to the A side of the PCA9517. The
PCA9510/11/12/13/14 can
not
connect to the static offset I/Os used
on the PCA9515/15A/16/16A/17 B side and PCA9518.
FEATURES
Bi-directional buffer for SDA and SCL lines increases fanout and
prevents SDA and SCL corruption during live board insertion and
removal from multi-point backplane systems
Compatible with I
2
C standard mode, I
2
C fast mode, and SMBus
standards
V/
t rise time accelerators on all SDA and SCL lines with ability
to disable
V/
t rise time accelerators through the ACC pin for
lightly loaded systems
5 V to 3.3 V level translation with optimum noise margin
High-impedance SDA, SCL pins for V
CC
or V
CC2
= 0 V
1 V precharge on all SDA and SCL lines
Supports clock stretching and multiple master
arbitration/synchronization
Operating power supply voltage range: 2.7 V to 5.5 V
5.5 V tolerant I/Os
0 kHz to 400 kHz clock frequency
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 JESDEC Standard JESD78 which
exceeds 100 mA
Packages offered: SO8, TSSOP8 (MSOP8)
APPLICATION
cPCI, VME, AdvancedTCA cards and other multi-point backplane
cards that are required to be inserted or removed from an
operating system.
PIN CONFIGURATION
1
2
3
4
V
CC2
GND
SCLIN
SDAOUT
SDAIN
ACC
5
6
7
8
V
CC
SCLOUT
SW02070
TOP VIEW
Figure 1. Pin configuration.
PIN DESCRIPTION
PIN
SYMBOL
DESCRIPTION
1
V
CC2
Supply voltage for devices on the card
I
2
C-buses. Connect pull-up resistors from
SDAOUT and SCLOUT to this pin.
2
SCLOUT
Serial clock output to and from the SCL bus
on the card.
3
SCLIN
Serial clock input to and from the SCL bus
on the backplane.
4
GND
Ground. Connect this pin to a ground plane
for best results.
5
ACC
CMOS threshold digital input pin that
enables and disables the rise-time
accelerators on all four SDA and SCL pins.
ACC enables all accelerators when set to
V
CC2
, and turns them off when set to GND.
Serial data input to and from the SDA bus on
the backplane/long distance bus.
6
SDAIN
7
SDAOUT
Serial data output to and from the SDA bus
on the card.
8
V
CC
Power supply. From the backplane, connect
pull-up resistors from SDAIN and SCLIN to
this pin.
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE
ORDER CODE
TOPSIDE MARK
DRAWING NUMBER
8-pin plastic SO
–40
°
C to +85
°
C
PCA9512D
PCA9512
SOT96-1
8-pin plastic TSSOP (MSOP)
Standard packing quantities and other packaging data are available at www.standardproducts.philips.com/packaging.
–40
°
C to +85
°
C
PCA9512DP
9512
SOT505-1
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PCA9512DP | Level shifting hot swappable I2C and SMBus buffer |
| PCA9513A | Hot swappable I2C-bus and SMBus bus buffer |
| PCA9514A | Hot swappable I2C-bus and SMBus bus buffer |
| PCA9516A | 5-channel I2C hub |
| PCA9519 | 4-channel level translating I2C-bus/SMBus repeater |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCA9512D,112 | 功能描述:緩沖器和線路驅(qū)動(dòng)器 LEVSHIFT 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 |
| PCA9512D,118 | 功能描述:緩沖器和線路驅(qū)動(dòng)器 LEVSHIFT 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 |
| PCA9512DP | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Level shifting hot swappable I2C and SMBus buffer |
| PCA9512DP,118 | 功能描述:緩沖器和線路驅(qū)動(dòng)器 LEVSHIFT 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 |
| PCA9513 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Level translating I2C-bus repeater |
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