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參數(shù)資料
| 型號(hào)： | PCA9517 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Level translating I2C-bus repeater |
| 中文描述： | 級(jí)別翻譯I2C總線中繼器 |
| 文件頁(yè)數(shù)： | 2/13頁(yè) |
| 文件大?。?/td> | 107K |
| 代理商： | PCA9517 |
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Philips Semiconductors
PCA9517
Level translating I
2
C-bus repeater
Product data sheet
2
2004 Oct 05
DESCRIPTION
The PCA9517 is a CMOS integrated circuit that provides level
shifting between low voltage (down to 0.9 V) and higher voltage
(2.7 V to 5.5 V) I
2
C or SMBus applications. While retaining all the
operating modes and features of the I
2
C system during the level
shifts, it also permits extension of the I
2
C-bus by providing
bi-directional buffering for both the data (SDA) and the clock (SCL)
lines, thus enabling two buses of 400 pF. Using the PCA9517
enables the system designer to isolate two halves of a bus for both
voltage and capacitance. The SDA and SCL pins are over voltage
tolerant and are high-impedance when the PCA9517 is unpowered.
The 2.7 V to 5.5 V bus B side drivers behave much like the drivers
on the PCA9515A device while the adjustable voltage bus A side
drivers drive more current and eliminate the static offset voltage.
This results in a LOW on the B side translating into a nearly 0 V
LOW on the A side which accommodates smaller voltage swings of
lower voltage logic.
The static offset design of the B side PCA9517 I/O drivers prevent
them from being connected to another PCA9510, PCA9511, PCA9512,
PCA9513, PCA9514, PCA9515A, PCA9516A, PCA9517 (B side), or
PCA9518. The A side of two or more PCA9517s can be connected
together, however, to allow a star topography with the A side on the
common bus, and the A side can be connected directly to any other
buffer with static or dynamic offset voltage. Multiple PCA9517s can
be connected in series, A side to B side, with no build-up in offset
voltage with only time of flight delays to consider.
The PCA9517 drivers are not enabled unless V
CCA
is above 0.8 V
and V
CC
is above 2.5 V. The EN pin can also be used to turn the
drivers on and off under system control. Caution should be observed
to only change the state of the enable pin when the bus is idle.
FEATURES
2 channel, bi-directional buffer isolates capacitance and allows
400 pF on either side of the device
Voltage level translation from 0.9 V to 5.5 V and from
2.7 V to 5.5 V
Footprint and functions replacement for PCA9515/15A
I
2
C-bus and SMBus compatible
Active-HIGH repeater enable input
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 2.7 V to 3.6 V
5 V tolerant I
2
C and enable pins
0 kHz to 400 kHz clock frequency
1
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.
Packages offered: SO8, TSSOP8 (MSOP8)
ORDERING INFORMATION
PACKAGES
TEMPERATURE RANGE
–40 to +85
°
C
–40 to +85
°
C
ORDER CODE
TOPSIDE MARK
DRAWING NUMBER
8-pin plastic SO
PCA9517D
PCA9517
SOT96-1
8-pin plastic TSSOP (MSOP)
PCA9517DP
9517
SOT505-1
Standard packing quantities and other packaging data are available at www.standardproducts.philips.com/packaging/.
PIN CONFIGURATION
1
2
3
4
GND
SDAA
SCLB
SDAB
EN
5
6
7
8
V
CCB
SCLA
SU01790
V
CCA
Figure 1. Pin configuration
PIN DESCRIPTION
PIN
SYMBOL
FUNCTION
1
V
CCA
SCLA
A side supply voltage (0.9 V to 5.5 V)
2
Serial clock A side bus
3
SDAA
Serial data A side bus
4
GND
Supply ground
5
EN
Active-HIGH repeater enable input
6
SDAB
Serial data B side bus
7
SCLB
Serial clock B side bus
8
V
CCB
B side and device supply voltage
(2.7 V to 3.6 V)
1.
The maximum system operating frequency may be less than 400 kHz because of the delays added by the repeater.
相關(guān)PDF資料 |
PDF描述 |
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| PCA9517D | H 1/14D RED BD |
| PCA9517DP | Level translating I2C-bus repeater |
| PCA9518 | Expandable 5-channel I2C hub |
| PCA9530 | 2-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 |
|---|---|
| PCA9517A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Level translating I2C-bus repeater |
| PCA9517AD | 功能描述:轉(zhuǎn)換 - 電壓電平 LEVEL TRANSL I2C BUS REPEATER RoHS:否 制造商:Micrel 類型:CML/LVDS/LVPECL to LVCMOS/LVTTL 傳播延遲時(shí)間:1.9 ns 電源電流:14 mA 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MLF-8 |
| PCA9517AD,112 | 功能描述:轉(zhuǎn)換 - 電壓電平 LEVEL TRANSL I2C BUS RoHS:否 制造商:Micrel 類型:CML/LVDS/LVPECL to LVCMOS/LVTTL 傳播延遲時(shí)間:1.9 ns 電源電流:14 mA 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MLF-8 |
| PCA9517AD,118 | 功能描述:轉(zhuǎn)換 - 電壓電平 LEVEL TRANSL I2C BUS RoHS:否 制造商:Micrel 類型:CML/LVDS/LVPECL to LVCMOS/LVTTL 傳播延遲時(shí)間:1.9 ns 電源電流:14 mA 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MLF-8 |
| PCA9517ADMR2G | 制造商:ONSEMI 制造商全稱:ON Semiconductor 功能描述:Level-Translating I2C-Bus Repeater |
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