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MXL1543B：+5V Multiprotocol, 3Tx/3Rx, Software-Selectable Clock/Data Transceivers

The MXL1543B is a three-driver/three-receiver multiprotocol transceiver that operates from a +5V single supply. The MXL1543B, along with the MXL1544/MAX3175 and the MXL1344A, form a complete software-selectable data terminal equipment (DTE) or data communication equipment (DCE) interface port that supports the V.28 (RS-232), V.10/V.11 (RS-449/V.36, EIA-530, EIA-530A, X.21), and V.35 protocols. The MXL1543B transceivers carry the high-speed clock and data signals, while the MXL1544/MAX3175 carry the control signals. The MXL1543B can be terminated by the MXL1344A software-selectable resistor termination network or by discrete termination networks. An internal charge pump and a proprietary low-dropout transmitter output stage allow V.11- , V.28- , and V.35- compliant operation from a +5V single supply. A nocable mode is entered when all mode pins (M0, M1, and M2) are pulled high or left unconnected. In no-cable mode, supply current decreases to 0.5µA and all transmitter and receiver outputs are disabled (high impedance). Short-circuit current limiting and thermal shutdown circuitry protect the drivers against excessive power dissipation.

Key Features MXL1543B, MXL1544/MAX3175, and MXL1344A Chipset Is Pin Compatible with LTC1543, LTC1544, and LTC1344A Supports RS-232, RS-449, EIA-530, EIA-530A, V.35, V.36, and X.21 Software-Selectable Cable Termination Using the MXL1344A Complete DTE or DCE Port with MXL1544/MAX3175, and MXL1344A +5V Single-Supply Operation 0.5µA No-Cable Mode TUV-Certified NET1/NET2 and TBR1/TBR2-Compliant

MXL1543B: Typical Operating Circuit Applications/Uses CSUs/DSUs Data Networking Data Routers PCI Cards Telecommunications Equipment

DataSheet

Parametrics

Quality and Environmental Data

• MXL1543B.pdf

Related Products

• MXL1544：+5V, Multiprotocol, Software-Selectable Control Transceivers
• MXL1344A：+5V Multiprotocol, Software-Selectable Cable Terminator

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