General Description
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.

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

Applications
   Data Networking
   CSU and DSU
   Data Routers
   PCI Cards
   Telecommunications Equipment