MAX487
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The MAX487 is a low-power transceiver for RS-485 and RS-422 communication. It is designed for half-duplex data transmission and operates from a single 5V power supply. The MAX487 offers low power consumption and high data rate capabilities, making it suitable for applications requiring efficient and reliable communication over long distances. It is capable of driving up to 32 transceivers on a single bus, allowing for extended network configurations.
Key Features:
- Low power consumption: 1.2mA (max) supply current
- Half-duplex communication
- Meets RS-485 and RS-422 standards
- Data rates up to 250 kbps
- Single 5V supply operation
- Short-circuit current limiting
- Thermal shutdown protection
- Allows up to 32 transceivers on the bus
- High input impedance
- Available in 8-pin DIP and SOIC packages
- Supply Voltage (VCC): 4.75V to 5.25V
- Driver Differential Output Voltage: ±1.5V (min)
- Receiver Input Sensitivity: ±200mV
- Receiver Input Resistance: 12kΩ (min)
- High-Level Input Voltage (VIH): 2V (min)
- Low-Level Input Voltage (VIL): 0.8V (max)
- High-Level Output Voltage (VOH): 3.5V (min) at Iout = -4mA
- Low-Level Output Voltage (VOL): 0.4V (max) at Iout = 4mA
- Data Rate: Up to 250 kbps
- Operating Temperature Range: -40°C to +85°C
- Package: 8-pin DIP/SOIC
- Industrial Automation: Ensures reliable communication in factory automation and process control systems.
- Building Automation: Used in HVAC control, lighting control, and security systems.
- Embedded Systems: Provides robust data transfer in microcontroller-based projects.
- Networking Equipment: Enables data transmission over long distances in networking hardware.
- Telecommunications: Facilitates communication in telecom systems and devices.
- Security Systems: Used in surveillance and access control systems for reliable data transfer.
Technical Specifications:
- Logic Family: CMOS
- Number of Channels: 3
- Switch Configuration: Single-Pole Double-Throw (SPDT)
- Supply Voltage Range: 3V to 15V
- “ON” Resistance (R_ON): 125Ω typical at V_DD = 10V
- “OFF” Leakage Current (I_OFF): ±100pA typical at V_DD = 10V
- Control Input Voltage (V_IH): 0.7 V_DD min, 0.3 V_DD max
- Maximum Operating Frequency: 40 MHz at V_DD = 10V
Applications:
- Signal routing and switching
- Analog and digital multiplexing
- Audio and video signal processing
- Data acquisition systems
- Test equipment