參數(shù)資料
型號： MAX253CSA
廠商： Maxim Integrated Products
文件頁數(shù)： 1/18頁
文件大?。?/td> 0K
描述： IC XFRMR DRIVER RS485 8-SOIC
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 100
類型： 驅(qū)動器
驅(qū)動器/接收器數(shù)： 1/0
規(guī)程： RS232，RS485
電源電壓： 4.5 V ~ 5.5 V
安裝類型： 表面貼裝
封裝/外殼： 8-SOIC（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝： 8-SOIC
包裝： 管件
AVAILABLE
Functional Diagrams
Pin Configurations appear at end of data sheet.
Functional Diagrams continued at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
_______________General Description
The MAX253 monolithic oscillator/power-driver is
specifically designed to provide isolated power for an
isolated RS-485 or RS-232 data interface. The device
drives a center-tapped transformer primary from a 5V
or 3.3V DC power supply. The secondary can be
wound to provide any isolated voltage needed at power
levels up to 1W.
The MAX253 consists of a CMOS oscillator driving a
pair of N-channel power switches. The oscillator runs
at double the output frequency, driving a toggle flip-flop
to ensure 50% duty cycle to each of the switches.
Internal delays are arranged to ensure break-before-
make action between the two switches.
The SD pin puts the entire device into a low-power
shutdown state, disabling both the power switches and
oscillator.
________________________Applications
Isolated RS-485/RS-232 Power-Supply
Transformer Driver
High Noise-Immunity Communications Interface
Isolated and/or High-Voltage Power Supplies
Bridge Ground Differentials
Medical Equipment
Process Control
____________________________Features
Power-Supply Transformer Driver for Isolated
RS-485/RS-232 Data-Interface Applications
Single 5V or 3.3V Supply
Low-Current Shutdown Mode: 0.4A
Pin-Selectable Frequency: 350kHz or 200kHz
8-Pin DIP, SO, and MAX Packages
______________Ordering Information
MAX253
Transformer Driver for
Isolated RS-485 Interface
MAX253
D1
D2
FS
GND1
GND2
VCC
1
8
46
27
3
VIN
SD
FREQUENCY
SWITCH
C3
C1
C2
5V @ 200mA
OUTPUT
5V
ON / OFF
__________Typical Operating Circuit
PART
TEMP RANGE
PIN-PACKAGE
MAX253CPA
0°C to +70°C
8 Plastic DIP
MAX253CSA
0°C to +70°C
8 SO
MAX253CUA
0°C to +70°C
8 μMAX
MAX253C/D
0°C to +70°C
Dice*
MAX253EPA
-40°C to +85°C
8 Plastic DIP
MAX253ESA
-40°C to +85°C
8 SO
MAX253ESA/V
-40°C to +85°C
8 SO
MAX253MJA
-55°C to +125°C
8 CERDIP**
*
Contact factory for dice specifications.
**
Contact factory for availability and processing to MIL-STD-883.
Devices are also available in a lead(Pb)-free/RoHS-compliant
package. Specify lead-free by adding a (+) to the part number
when ordering.
/V Denotes an automotive qualified part.
MAX is a registered trademark of Maxim Integrated Products, Inc.
__________Typical Operating Circuit
19-0226; Rev 2; 4/10
MAX253
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX253CSA+ 功能描述:功率驅(qū)動器IC Transformer Driver for Iso RS-485 Int RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube
MAX253CSA+T 功能描述:功率驅(qū)動器IC Transformer Driver for Iso RS-485 Int RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube
MAX253CSA-T 功能描述:功率驅(qū)動器IC RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube
MAX253CUA 功能描述:功率驅(qū)動器IC RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube
MAX253CUA+ 功能描述:功率驅(qū)動器IC Transformer Driver for Iso RS-485 Int RoHS:否 制造商:Micrel 產(chǎn)品:MOSFET Gate Drivers 類型:Low Cost High or Low Side MOSFET Driver 上升時間: 下降時間: 電源電壓-最大:30 V 電源電壓-最小:2.75 V 電源電流: 最大功率耗散: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube
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