Analog Devices / Maxim Integrated MAX348x & MAX349x RS-485/RS-422 Transceivers
Analog Devices MAX348x and MAX349x RS-485/RS-422 Transceivers are 3.3V, low-power transceivers for RS-485 and RS-422 communication. Each part contains one driver and one receiver. The Analog Devices MAX3483 and MAX3488 feature slew-rate-limited drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission at data rates up to 250kbps. The partially slew-rate-limited MAX3486 transmits up to 2.5Mbps. The MAX3485, MAX3490, and MAX3491 transmit at up to 10Mbps.
The Analog Devices MAX348x and MAX349x RS-485/RS-422 Transceivers are short-circuited current limited and are protected against excessive power dissipation by thermal shutdown circuitry that places the driver outputs into a high-impedance state. The MAX3488, MAX3490, and MAX3491 feature full-duplex communication, while the MAX3483, MAX3485, and MAX3486 are designed for half-duplex communication.
Features
- Operate from a Single 3.3V Supply; No Charge Pump
- Interoperable with +5V Logic
- 8ns Max Skew (MAX3485, MAX3490, MAX3491)
- Slew-Rate Limited for Errorless Data Transmission (MAX3483, MAX3488)
- 2nA Low-Current Shutdown Mode (MAX3483, MAX3485, MAX3486, MAX3491)
- -7V to +12V Common-Mode Input Voltage Range
- Allows up to 32 Transceivers on the Bus
- Full-Duplex and Half-Duplex Versions Available
- Industry Standard 75176 Pinout (MAX3483, MAX3485, MAX3486)
- Current-Limiting and Thermal Shutdown for Driver Overload Protection
Applications
- Industrial Control Local Area Networks
- Integrated Services Digital Networks
- Low-Power RS-485/RS-422 Transceivers
- Packet Switching
- Telecommunications
- Transceivers for EMI-Sensitive Applications
Related Products
Analog Devices / Maxim Integrated MAX22507E & MAX22508E Full-Duplex Transceivers
Optimized for highspeed communication up to 50Mbps.
Analog Devices / Maxim Integrated MAX22506E Half-Duplex RS-485/RS-422 Transceiver
Optimized for high-speed communication up to 50Mbps.
Analog Devices / Maxim Integrated MAX33070E/MAX33071E Half-Duplex Transceivers
Fault-protected with high ±65V protection for overvoltage conditions on the communication bus lines.
Analog Devices / Maxim Integrated MAX33045E/MAX33046E RS-485/RS-422 Transceivers
Offer flexibility by operating at either a 3.3V or 5.0V supply rail.
Typical Application Circuits
