Features: ` MXL1543, 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
` 0.5A No-Cable Mode
` TUV-Certified NET1/NET2 and TBR1/TBR2- CompliantApplication·Data Networking
·CSU and DSU
·Data Routers
·PCI Cards
·Telecommunications
·EquipmentPinout
SpecificationsAll Voltages Referenced to GND Unless Otherwise Noted.
Supply Voltages
VCC...........................................................................-0.3V to +6V
VDD........................................................................-0.3V to +7.3V
VEE.........................................................................+0.3V to -6.5V
VDD to VEE (Note 1)...............................................................13V
Logic Input Voltages
M0, M1, M2, DTE/DTE, T_IN ......................................-0.3V to +6V
Logic Output Voltages
R_OUT.........................................................-0.3V to (VCC + 0.3V)
Transmitter Outputs
T_OUT_, T3OUT_/R1IN_..........................................-15V to +15V
Short-Circuit Duration...............................................Continuous
Receiver Input
R_IN_T3OUT_/R1IN_..............................................-15V to +15V
Continuous Power Dissipation (TA = +70)
28-Pin SSOP (derate 11.1mW/ above +70) .............889mW
Operating Temperature Range
MXL1543CAI .............................................................0 to 70
Junction Temperature .......................................................150
Storage Temperature Range ............................-65 to +150
Lead Temperature (soldering, 10s) ...............................+300
Note 1: VDD and VEE absolute difference cannot exceed 13V.
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
DescriptionThe MXL1543 is a three-driver/three-receiver multiprotocol transceiver that operates from a +5V single supply. The MXL1543, 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 MXL1543 transceivers carry the high-speed clock and data signals while the MXL1544/MAX3175 carry the control signals. The MXL1543 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) of MXL1543 are pulled high or left unconnected. In nocable mode, supply current decreases to 0.5A 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.
MXL1543 Data Sheet
