CS61305A

Features:

· Provides Analog Transmission Line Interface for T1 and E1 Applications
· Provides Line Driver, Jitter Attenuator and Clock Recovery Functions
· Transmit Side Jitter Attenuation Starting at 3 Hz, with > 300 UI of Jitter Tolerance
· B8ZS/HDB3/AMI Encoders/Decoders
· Compatible with SONET, M13 , CCITT G.742, and Other Asynchronous Muxes
· 50 mA Transmitter Short-Circuit Current Limiting


Application

· Interfacing network transmission equipment such as SONET multiplexor and M13 to a DSX-1 cross connect.
· Interfacing customer premises equipment to a CSU.


Pinout





Specifications

Parameter	Symbol	Min	Max	Unit
DC Supply                          (referenced to RGND=TGND=0 V)	RV+ TV+	- -	6.0 (RV+) + 0.3	V V
Input Voltage, Any Pin                                             (Note 1)	Vin	RGND - 0.3	(RV+) + 0.3	V
Input Current, Any Pin                                             (Note 2)	Iin	-10	10	mA
Ambient Operating Temperature	TA	-40	85	°C
Storage Temperature	Tstg	-65	150	°C

Description

The CS61305A combines the complete analog transmit and receive line interface for T1 or E1 applications in a low power, 28-pin device operating from a +5V supply. The CS61305A is a pin-compatible replacement for the LXT305A in most applications.

The CS61305A provides a transmitter jitter attenuator making it ideal for use in asynchronous multiplexor systems with gapped transmit clocks. The transmitter features internal pulse shaping and a low impedance output stage allowing the use of external resistors for transmitter impedance matching. The receiver uses a digital Delay-Locked-Loop clock and data recovery circuit which is continuously calibrated from a crystal reference to provide excellent stability and jitter tolerance.