MXL1344A：+5V Multiprotocol, Software-Selectable Cable Terminator

Save Board Space and Cost Replacing Discrete Resistor Networks and Relays

The MXL1344A contains six software-selectable, multiprotocol cable termination networks. Each network is capable of terminating V.11 (RS-422, RS-530, RS-530A, RS-449, V.36 and X.21) with a 100Ω differential load, V.35 with a T-network load, or V.28 (RS-232) and V.10 (RS-423) with an open-circuit load for use with transceivers having on-chip termination. The termination protocol can be selected by the serial interface cable wiring or by software control. The MXL1344A replaces discrete resistor termination networks and expensive relays required for multiprotocol termination, saving space and cost. The MXL1344A terminator is designed to form a complete +5V cable- or software-selectable multiprotocol DCE/DTE interface port when used with the MXL1543 and MXL1544/MAX3175 transceiver ICs. The MXL1344A terminator can use the VEE power generated by the MXL1543 charge pump, simplifying system design. The MXL1344A, MXL1543, and MXL1544/MAX3175 are pin-for-pin compatible with the LTC1344A, LTC1543, and LTC1544, but for proper operation the entire Maxim chipset must be used without substituting other manufacturer's parts on a chip-by-chip basis. The MXL1344A is available in a 24-pin SSOP package and is specified for the 0°C to +70°C commercial temperature range.

Key Features

Certified TBR-1 and TBR-2-Compliant Chipset (NET1 and NET2)—Pending Completion of Testing
Supports V.10 (RS-423), V.11 (RS-422, RS-530, RS-530A, RS-449, V.36, and X.21), V.28 (RS-232) and V.35 Termination
Cable- or Software-Selectable Termination
Cable- or Software-Selectable DTE/DCE
Replaces Discrete Resistor Termination Networks and Expensive Relays
Available in Small 24-Pin SSOP Package

MXL1344A: Typical Operating Circuit

Applications/Uses

CSUs/DSUs
Data Networking
Data Routers
Data Switches
PCI Cards
Telecommunications Equipment

DataSheet

title	Download file
MXL1344A Data Sheet	MXL1344A.pdf

Parametrics

Part Number	Functions	RS-232 Data Rate (Mbps)	RS-485 Data Rate (Mbps)	Single Ended Tx/Rx	Diff. Tx/Rx	Shutdn	Supported Protocols	DCE/ DTE Interchg.	Rx Glitch Rejection	Tx Fault Protect.	On Chip Charge Pump	I_CC (mA)	Package/Pins	Budgetary Price
Part Number	Functions	max	max	Single Ended Tx/Rx	Diff. Tx/Rx	Shutdn	Supported Protocols	DCE/ DTE Interchg.	Rx Glitch Rejection	Tx Fault Protect.	On Chip Charge Pump	max	Package/Pins	See Notes
MXL1344A	Multiprotocol Cable Terminators	2	2	0/0	0/0	No	RS-232 RS-449 RS-485 RS-530 RS-530A V.10 V.11 V.28 V.35 V.36 X.21	Yes	No	No	No	1	SSOP/24	$6.96 @1k

Quality and Environmental Data

MXL1344A.pdf

Ordering Information

Part Number	Status	Recommended Replacement	Package	Temp	RoHS
MXL1344ACAG	No Longer Available	MXL1344ACAG+	SSOP,;24 pin;65.8 mm²	0°C to +70°C	No
MXL1344ACAG+	Active		SSOP,;24 pin;65.8 mm²	0°C to +70°C	Lead Free
MXL1344ACAG+T	Active		SSOP,;24 pin;65.8 mm²	0°C to +70°C	Lead Free
MXL1344ACAG-G05	No Longer Available		SSOP;	0°C to +70°C	See data sheet
MXL1344ACAG-T	No Longer Available	MXL1344ACAG+T	SSOP,;24 pin;65.8 mm²	0°C to +70°C	No
MXL1344ACAG-TG05	No Longer Available		SSOP,;24 pin;65.8 mm²	0°C to +70°C	No

MXL1344A.pdf MXL1344A