XRT7300 View Datasheet(PDF) - Exar Corporation
Part Name
Description
MFG CO.
'XRT7300' PDF : 55 Pages View PDF
XRT7300
E3/DS3/STS-1 LINE INTERFACE UNIT
REV. 1.1.1
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ELECTRICAL CHARACTERISTICS
DC ELECTRICAL CHARACTERISTICS (TA = 25°C, VDD = 5.0V + 5%, UNLESS OTHERWISE SPECIFIED)
SYMBOL
PARAMETER
MIN.
TYP.
MAX.
UNITS
VDDD DC Supply Voltage
4.75
5
5.25
V
VDDA DC Supply Voltage
4.75
5
5.25
V
ICC
Supply Current (Measured while Transmitting and Receiving all “1’s”)
DS-3 Mode
167
200
mA
STS-1 Mode
180
220
mA
VIL
Input Low Voltage
0.8
V
VIH
Input High Voltage
2.0
VOL Output Low Voltage, IOUT = -4.0mA
0
VOH Output High Voltage, IOUT = 4.0mA
2.8
IL
Input Leakage Current*
VDD
V
0.4
V
VDD
V
±10
mA
* Not applicable to pins with pull-up/pull-down resistors.
AC ELECTRICAL CHARACTERISTICS (TA = 25°C, VDD = 5.0V + 5%, UNLESS OTHERWISE SPECIFIED)
SYMBOL
PARAMETER
MIN.
TYP.
MAX.
UNITS
Terminal Side Timing Parameters (See Figure 3 & Figure 4)
TCLK Clock Duty Cycle (DS3/STS-1)
30
50
70
%
TCLK Clock Duty Cycle (E3)
30
50
70
%
TCLK Frequency (SONET STS-1)
51.84
MHz
TCLK Frequency (DS3)
44.736
MHz
TCLK Frequency (E3)
34.368
MHz
tRTX TCLK Clock Rise Time (10% to 90%)
4
ns
tFTX TCLK Clock Fall Time (90% to 10%)
4
ns
tTSU TPDATA/TNDATA to TCLK Falling Set up time
3
ns
tTHO TPDATA/TNDATA to TCLK Falling Hold time
3
ns
tLCVO RCLK to rising edge of LCV output delay
2.5
ns
tTDY TTIP/TRING to TCLK Rising Propagation Delay time
0.6
14
ns
RCLK Clock Duty Cycle
45
50
55
%
RCLK Frequency (SONET STS-1)
51.84
MHz
RCLK Frequency (DS3)
44.736
MHz
RCLK Frequency (E3)
34.368
MHz
10
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