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| 型号： | IL3285 |
| 厂商： | NVE Corp/Isolation Products |
| 文件页数： | 3/18页 |
| 文件大小： | 0K |
| 描述： | IC TXRX RS485 ISOLATED 16SOICW |
| 产品培训模块： | IsoLoop® Isolator |
| 标准包装： | 50 |
| 系列： | IsoLoop® |
| 类型： | 收发器，隔离式 |
| 驱动器/接收器数： | 1/1 |
| 规程： | RS485 |
| 电源电压： | 3.3V，5V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | * |
| 包装： | 管件 |
| 其它名称： | 390-1034-5 |
IL3285/IL3222
11
NVE Corporation
11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
www.isoloop.com
iso-info@nve.com
NVE Corporation
Fail-Safe Biasing
R
B
V
DD
200K
GND
A
5 V
R
FS-EXT
R
T
R
T
R
FS-EXT
R
FS-INT
R
FS-INT
200K
IL32xx
Fail-Safe
RT
Loading
Operation?
None
Four eighth-unit loads (96 k ea.)
283 mV
Yes
120
Four eighth-unit loads (96 k ea.)
1 mV
No
560
120
Four eighth-unit loads (96 k ea.)
254 mV
Yes
510
120
256 eighth-unit loads (96 k ea.)
243 mV
Yes
Nominal VA-B
(inactive)
RFS-EXT
Internal Only
Power Supply Decoupling
Both VDD1 and VDD2 should be bypassed with 47 nF low-ESR ceramic capacitors. These should be placed as close as possible to
VDD pins. VDD2 should also be bypassed with a 10 F tantalum capacitor.
Maintaining Creepage
Creepage distances are often critical in isolated circuits. In addition to meeting JEDEC standards, NVE isolator packages have
unique creepage specifications. Standard pad libraries often extend under the package, compromising creepage and clearance.
Similarly, ground planes, if used, should be spaced to avoid compromising clearance. Package drawings and recommended pad
layouts are included in this datasheet.
Magnetic Field Immunity
IsoLoop Isolators operate by imposing a magnetic field on a GMR sensor, which translates the change in field into a change in
logic state. A magnetic shield and a Wheatstone Bridge configuration provide good immunity to external magnetic fields.
Immunity to external magnetic fields can be enhanced by proper orientation of the device with respect to the field direction and
larger boost capacitors.
An applied field in the “H1” direction is the worst case for magnetic immunity. In this case the external field is in the same
direction as the applied internal field. In one direction it will tend to
help switching; in the other it will hinder switching. This can cause
unpredictable operation.
An applied field in the direction of “H2” has considerably less effect on
the sensor and will result in significantly higher immunity levels as
shown in Table 1.
The greatest magnetic immunity is achieved by adding a larger boost
capacitor across the input resistor. Very high immunity can be achieved
with this method.
Figure 3. Orientation of External Magnetic Field
V
DD1
V
COIL2
GND
1
V
COIL1
GND
2
R
NC
RE
B
DE
A
D
V
DD2
NC
GND
1
GND
2
H1
H2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IL3285-3E | 功能描述:TXRX ISO BUS 5MBPS RS485 16SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:IsoLoop® 标准包装:1,240 系列:GD 类型:收发器 驱动器/接收器数:3/5 规程:RS232 电源电压:4.5 V ~ 5.5 V 安装类型:通孔 封装/外壳:20-DIP（0.300"，7.62mm） 供应商设备封装:20-PDIP 包装:管件 |
| IL3285E | 功能描述:TXRX ISO BUS 1MBS RS485 16SOIC RoHS:是 类别:集成电路 (IC) >> 接口 - 驱动器，接收器，收发器 系列:IsoLoop® 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 类型:收发器 驱动器/接收器数:1/1 规程:RS422，RS485 电源电压:4.75 V ~ 5.25 V 安装类型:通孔 封装/外壳:8-DIP（0.300"，7.62mm） 供应商设备封装:8-PDIP 包装:管件 产品目录页面:1402 (CN2011-ZH PDF) |
| IL3285ETR13 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Fractional Load RS485 and RS422 Transceivers |
| IL3285TR13 | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Fractional Load RS485 and RS422 Transceivers |
| IL329 | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:OPTICALLY COUPLED TELECOM SWITCH |
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