the following example is for you reference.
(NEW and ORIGINAL)
(3.3V Powered, 10Mbps and Slew-Rate Limited, True RS-485/RS-422
- 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
|lead package||High-Power (1.8W) 8-Pin SO Package|
|Interoperable with||+5V Logic|
|Low-Current Shutdown Mode||2nA|
|Common-Mode Input Voltage Range||-7V to +12V|
|Allows up to||32 Transceivers on the Bus|
|Operate from a Single||3.3V Supply|
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-impedance 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.
- Industrial Control Local Area Networks
- Integrated Services Digital Networks
- Low-Power RS-485/RS-422 Transceivers
- Packet Switching
- Transceivers for EMI-Sensitive Applications
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