參數(shù)資料
型號: PE-68629
廠商: Exar Corporation
英文描述: E3/DS3/STS-1 LINE INTERFACE UNIT
中文描述: E3/DS3/STS-1線路接口單元
文件頁數(shù): 14/55頁
文件大?。?/td> 608K
代理商: PE-68629
XRT7300
E3/DS3/STS-1 LINE INTERFACE UNIT
REV. 1.1.1
á
10
ELECTRICAL CHARACTERISTICS
* Not applicable to pins with pull-up/pull-down resistors.
DC ELECTRICAL CHARACTERISTICS (T
A
= 25
°
C, V
DD
= 5.0V + 5%,
UNLESS
OTHERWISE
SPECIFIED
)
S
YMBOL
P
ARAMETER
M
IN
.
T
YP
.
M
AX
.
U
NITS
V
DDD
DC Supply Voltage
4.75
5
5.25
V
V
DDA
DC Supply Voltage
4.75
5
5.25
V
I
CC
Supply Current (Measured while Transmitting and Receiving all “1’s”)
DS-3 Mode
167
200
mA
STS-1 Mode
180
220
mA
V
IL
Input Low Voltage
0.8
V
V
IH
Input High Voltage
2.0
VDD
V
V
OL
Output Low Voltage, IOUT = -4.0mA
0
0.4
V
V
OH
Output High Voltage, IOUT = 4.0mA
2.8
VDD
V
I
L
Input Leakage Current*
±10
mA
AC ELECTRICAL CHARACTERISTICS (T
A
= 25
°
C, V
DD
= 5.0V + 5%,
UNLESS
OTHERWISE
SPECIFIED
)
S
YMBOL
P
ARAMETER
M
IN
.
T
YP
.
M
AX
.
U
NITS
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
t
RTX
TCLK Clock Rise Time (10% to 90%)
4
ns
t
FTX
TCLK Clock Fall Time (90% to 10%)
4
ns
t
TSU
TPDATA/TNDATA to TCLK Falling Set up time
3
ns
t
THO
TPDATA/TNDATA to TCLK Falling Hold time
3
ns
t
LCVO
RCLK to rising edge of LCV output delay
2.5
ns
t
TDY
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
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