Datasheet

General Description
The MAX3483, MAX3485, MAX3486, MAX3488,
MAX3490, and MAX3491 are 3.3V, low-power transceivers for
RS-485 and RS-422 communication. Each part contains
one driver and one receiver. The 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.
Drivers are short-circuit current-limited and are protected
against excessive power dissipation by thermal shutdown
circuitry that places the driver outputs into a high-imped-
ance state. The receiver input has a fail-safe feature that
guarantees a logic-high output if both inputs are open
circuit.
The MAX3488, MAX3490, and MAX3491 feature full-
duplex communication, while the MAX3483, MAX3485, and
MAX3486 are designed for half-duplex communication.
Applications
Low-Power RS-485/RS-422 Transceivers
Telecommunications
Transceivers for EMI-Sensitive Applications
Industrial-Control Local Area Networks
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
19-0333; Rev 1; 5/19
Ordering Information continued at end of data sheet.
* Contact factory for for dice specifications.
PART TEMP. RANGE PIN-PACKAGE
MAX3483CPA 0°C to +70°C 8 Plastic DIP
MAX3483CSA 0°C to +70°C 8 SO
MAX3483C/D 0°C to +70°C Dice*
MAX3483EPA -40°C to +85°C 8 Plastic DIP
MAX3483ESA -40°C to +85°C 8 SO
MAX3485CPA 0°C to +70°C 8 Plastic DIP
MAX3485CSA 0°C to +70°C 8 SO
MAX3485C/D 0°C to +70°C Dice*
MAX3485EPA -40°C to +85°C 8 Plastic DIP
MAX3485ESA -40°C to +85°C 8 SO
PART
NUMBER
GUARANTEED
DATA RATE
(Mbps)
SUPPLY
VOLTAGE
(V)
HALF/FULL
DUPLEX
SLEW-RATE
LIMITED
DRIVER/
RECEIVER
ENABLE
SHUTDOWN
CURRENT
(nA)
PIN
COUNT
MAX3483 0.25
3.0 to 3.6
Half Yes Yes 2 8
MAX3485 10 Half No Yes 2 8
MAX3486 2.5 Half Yes Yes 2 8
MAX3488 0.25 Full Yes No 8
MAX3490 10 Full No No 8
MAX3491 10 Full No Yes 2 14
MAX3483/MAX3485/
MAX3486/MAX3488/
MAX3490/MAX3491
3.3V-Powered, 10Mbps and Slew-Rate-Limited
True RS-485/RS-422 Transceivers
Selection Table
Ordering Information
Click here for production status of specic part numbers.

Summary of content (17 pages)