Electronic Components Datasheet Search |
|
MAX253MJA Datasheet(PDF) 1 Page - Maxim Integrated Products |
|
MAX253MJA Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 17 page _______________General Description The MAX253 is a monolithic oscillator/power-driver, specifically designed to provide isolated power for an isolated RS-485 or RS-232 data interface. It 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: 0.4µA ♦♦ Pin-Selectable Frequency: 350kHz or 200kHz ♦♦ 8-Pin DIP, SO, and µMAX® Packages ______________Ordering Information Transformer Driver for Isolated RS-485 Interface ________________________________________________________________ Maxim Integrated Products 1 1 2 3 4 8 7 6 5 D2 GND2 VCC N.C. SD FS GND1 D1 DIP/SO/ μMAX TOP VIEW MAX253 __________________Pin Configuration 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 19-0226; Rev 1; 8/09 For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 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 MAX253MJA -55°C to +125°C 8 CERDIP** * Contact factory for dice specifications. ** Contact factory for availability and processing to MIL-STD-883. µMAX is a registered trademark of Maxim Integrated Products, Inc. |
Similar Part No. - MAX253MJA |
|
Similar Description - MAX253MJA |
|
|
Link URL |
Privacy Policy |
ALLDATASHEET.COM |
Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |