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MAX3440EEPA Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX3440EEPA Datasheet(HTML) 1 Page - Maxim Integrated Products |
1 / 19 page Selector Guide General Description The MAX3440E–MAX3444E fault-protected RS-485 and J1708 transceivers feature ±60V protection from signal faults on communication bus lines. Each device contains one differential line driver with three-state output and one differential line receiver with three-state input. The 1/4-unit- load receiver input impedance allows up to 128 trans- ceivers on a single bus. The devices operate from a 5V supply at data rates of up to 10Mbps. True fail-safe inputs guarantee a logic-high receiver output when the receiver inputs are open, shorted, or connected to an idle data line. Hot-swap circuitry eliminates false transitions on the data bus during circuit initialization or connection to a live backplane. Short-circuit current-limiting and ther- mal shutdown circuitry protect the driver against exces- sive power dissipation, and on-chip ±15kV ESD protection eliminates costly external protection devices. The MAX3440E–MAX3444E are available in 8-pin SO and PDIP packages and are specified over industrial and automotive temperature ranges. Applications RS-422/RS-485 Communications Truck and Trailer Applications Industrial Networks Telecommunications Systems Automotive Applications HVAC Controls Features ♦ ±15kV ESD Protection ♦ ±60V Fault Protection ♦ Guaranteed 10Mbps Data Rate (MAX3441E/MAX3443E) ♦ Hot Swappable for Telecom Applications ♦ True Fail-Safe Receiver Inputs ♦ Enhanced Slew-Rate-Limiting Facilitates Error-Free Data Transmission (MAX3440E/MAX3442E/MAX3444E) ♦ Allow Up to 128 Transceivers on the Bus ♦ -7V to +12V Common-Mode Input Range ♦ Automotive Temperature Range (-40°C to +125°C) ♦ Industry-Standard Pinout ±15kV ESD-Protected, ±60V Fault-Protected, 10Mbps, Fail-Safe RS-485/J1708 Transceivers ________________________________________________________________ Maxim Integrated Products 1 TOP VIEW 1 2 3 4 8 5 VCC GND DI DE/RE RO FAULT R D Rt Rt 7 6 D R DE/RE FAULT DI RO A B 1 2 3 4 8 7 6 5 VCC B A GND DI DE/RE RO FAULT + + DIP/SO DIP/SO B A MAX3440E MAX3441E R D Pin Configurations and Typical Operating Circuits Ordering Information 19-2666; Rev 2; 11/10 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 MAX3440EESA+ -40°C to +85°C 8 SO MAX3440EEPA+ -40°C to +85°C 8 PDIP MAX3440EASA+ -40°C to +125°C 8 SO MAX3440EAPA+ -40°C to +125°C 8 PDIP PART TYPE DATA RATE (Mbps) LOW-POWER SHUTDOWN RECEIVER/DRIVER ENABLE TRANSCEIVERS ON BUS HOT SWAP MAX3440E RS-485 0.25 No Yes 128 Yes MAX3441E RS-485 2.5 to 10 No Yes 128 Yes MAX3442E RS-485 0.25 Yes Yes 128 Yes MAX3443E RS-485 2.5 to 10 Yes Yes 128 Yes MAX3444E J1708 0.25 Yes Yes 128 Yes (only RE) + Denotes a lead(Pb)-free/RoHS-compliant package. Ordering Information continued at end of data sheet. Pin Configurations and Typical Operating Circuits continued at end of data sheet. |
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