MXL1344ACAG+

Overview

The MXL1344ACAG+T is a +5V multiprotocol cable terminator containing six software-selectable termination networks. It supports V.11 (RS-422, RS-530, RS-530A, RS-449, V.36, X.21) with a 100 Ω differential load, V.35 with a T-network load, and V.28/V.10 with an open-circuit load. The device operates within a supply voltage range of 4.75V to 5.25V and typically utilizes a -5V VEE supply generated by companion transceivers. It features a 24-pin SSOP package and functions across a commercial temperature range of 0°C to +70°C.

Feature Summary

• Supports multiple serial interface protocols including V.11, V.35, V.28, and V.10 through selectable termination modes.
• Enables cable or software selection for protocol configuration and DTE/DCE interface mode determination.
• Integrates six independent termination networks to replace discrete resistor arrays and mechanical relays.

Applications

• Data networking PCI cards
• CSU and DSU telecommunications equipment
• Data routers and data switches

Procurement Notes

Verify the specific suffix 'CAG' corresponds to the commercial temperature range and SSOP package when sourcing. Confirm compatibility with the intended Maxim chipset environment, as proper operation requires using the complete MXL1344A, MXL1543, and MXL1544/MAX3175 set without substituting individual parts from other manufacturers.

Selection Notes

Select this component for designs requiring flexible multiprotocol serial interface termination in a compact form factor. Ensure the system design accommodates the required VCC and VEE supply rails, noting that VEE is often derived from the charge pump of the associated MXL1543 transceiver. Verify that the application does not require extended industrial temperature ranges beyond the specified 0°C to +70°C limit.

Part Context

This part belongs to the MXL1344A series of multiprotocol cable terminators manufactured by Analog Devices / Maxim Integrated. It is designed to work in conjunction with the MXL1543 and MXL1544/MAX3175 transceivers to create complete serial interface ports. The device serves as a direct replacement for older discrete resistor networks and relay-based switching solutions.

Replacement Considerations

The MXL1344A is pin-for-pin compatible with the LTC1344A. However, datasheet specifications mandate that the entire Maxim chipset must be used together; substituting individual chips from other manufacturers on a chip-by-chip basis may result in improper operation.