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Product Detailed Parameters
- Description：IC TRANSCEIVER FULL 1/1 14SOIC
- Mfr：Analog Devices Inc./Maxim Integrated
- Package：Tape & Reel (TR),Cut Tape (CT)
- Series：-
- Type：Transceiver
- Protocol：RS422, RS485
- Number of Drivers/Receivers：1月1日
- Duplex：Full
- Data Rate：16Mbps
- Voltage - Supply：3V ~ 3.6V
- Operating Temperature：-40°C ~ 85°C
- Mounting Type：Surface Mount
- Package / Case：14-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：14-SOIC
- Receiver Hysteresis：100 mV
- Grade：-
- Qualification：-
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Overview
The MAX3079EESD+T is a +3.3V, ±15kV ESD-protected, fail-safe, hot-swap RS-485 transceiver featuring one driver and one receiver in a 14-pin SOIC package. It supports selectable data rates of 250kbps, 500kbps, and 16Mbps via the SRL pin. The device allows half-duplex or full-duplex operation through the H/F pin and includes independent phase control for transmitter (TXP) and receiver (RXP). Supply current is 800µA unloaded, with shutdown current at 10µA.
Feature Summary
- Pin-selectable slew rate limits enable flexible data transmission speeds up to 16Mbps.
- Hot-swap input structure prevents false bus transitions during power-up or insertion.
- Independent phase control pins correct signal polarity for reversed twisted-pair connections.
- Selectable half-duplex or full-duplex modes provide versatile communication configurations.
Applications
- Industrial Control Systems
- Telecommunications Equipment
- Security Systems
- Lighting Systems
Procurement Notes
Verify the specific suffix 'T' indicates tape-and-reel packaging when sourcing components. Confirm that the 'E' designation corresponds to the industrial temperature range of -40°C to +85°C. Ensure compatibility with standard 14-SOIC footprints during PCB layout verification.
Selection Notes
Select this component when variable baud rates are required within a single design. The integrated phase inversion features simplify wiring corrections without external logic. Verify that the 3.3V supply voltage aligns with the system architecture before implementation.
Part Context
This part belongs to the MAX3070E–MAX3079E family of high-speed RS-485 transceivers. Unlike fixed-rate variants, the MAX3079E offers unique configurability for duplex mode and slew rate. It shares common robust protection features with its siblings while providing enhanced flexibility for complex bus topologies.
Replacement Considerations
Direct functional replacements include other MAX3079 variants such as MAX3079EESA+T or MAX3079EAPD+. Verify package dimensions and thermal characteristics when substituting between SOIC and DIP formats.
FAQ
How is the data rate configured on the MAX3079E?
The data rate is set by the SRL pin: leave unconnected for 250kbps, connect to VCC for 500kbps, or connect to GND for 16Mbps.
Can the MAX3079E operate in both half-duplex and full-duplex modes?
Yes, the H/F pin selects the mode. Drive it low or leave unconnected for full-duplex, or drive it high for half-duplex.
What is the purpose of the TXP and RXP pins?
These pins allow independent inversion of the transmitter and receiver phases to compensate for reversed twisted-pair wiring.
