AK2548

Features:

· 7ch E1 transceiver
· Jitter Tolerance: Compliant with ITU-T G.823, I.431
· Transmitter Pulse Shape: Compliant with ITU-T G.703
· Loss of Signal Detection: Compliant with ITU-T G.775
· Return loss: Compliant with ETS 300 166
· Selectable Signal Polarity
· Local/Remote Loopback
· Parallel/Serial Microprocessor Interface
· Single 3.3V±5% Operation
· Low Power Consumption
· Pin-to-pin compatible with AK2546(7 channel T1 transceiver) except serial interface
· Small Plastic Package 144pin LQFP


Pinout




Specifications

Parameter	Symbol	Min	Typ	Max	Units	Condition
DC Supply	VDD	-0.3		6.5	V
Input Voltage	VIN1	-0.3		VDD+0.3	V	Apply to except for RTIPx, RRINGx
	VIN2	-3		VDD+0.3	V	Apply to RTIPx, RRINGx
Input Current	IIN			10	mA
Storage Temperature	Tstg	-55		130	°C

Note) All voltages with respect to ground.
          All negative voltage pins=0V. VDD apply to all positive voltage pins.


Description

The AK2548 is the 7 channel E1 transceiver for a SDH/SONET MUX, M13 MUX, etc.It includes seven independent transmitters, clock and data recovery, LOS detector, control circuit in one LQFP-144 package which saves space, power consumption and the board design time.Internally generated transmit pulse provides the appropriate pulse shape.