Datasheet Maxim MAX253CSA-T
| Manufacturer | Maxim |
| Series | MAX253 |
| Part Number | MAX253CSA-T |
1W Primary-Side Transformer H-Bridge Driver for Isolated Supplies
Datasheets
Transformer Driver for Isolated RS-485 Interface
Prices
Detailed 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.
Model Line
- MAX253C/D MAX253CPA MAX253CPA+ MAX253CSA MAX253CSA+ MAX253CSA+T MAX253CSA+TG002 MAX253CSA-T MAX253CUA MAX253CUA+ MAX253CUA+T MAX253CUA-T MAX253EPA MAX253EPA+ MAX253ESA MAX253ESA+ MAX253ESA+T MAX253ESA+TG002 MAX253ESA-T MAX253ESA/V+ MAX253ESA/V+T MAX253EUA MAX253EUA+ MAX253EUA+T MAX253MJA MAX253MSA/PR MAX253MSA/PR+ MAX253MSA/PR+T
Manufacturer's Classification
- Power > Isolated Power Supplies
Other Names:
MAX253CSAT, MAX253CSA T
