78P7200
E3/DS3/STS-1
Line Interface Unit
Page: 6 of 11
© 2005 Teridian Semiconductor Corporation
Rev 3.0
ELECTRICAL SPECIFICATIONS
(TA = -40°C to 85°C, Vcc = 5V ±5%, unless otherwise noted.) Currents flowing into the chip are positive. Current
maximums are currents with the largest absolute value. Operation above absolute maximum ratings may
permanently damage the device.
ABSOLUTE MAXIMUM RATINGS
PARAMETER
RATING
Positive 5V supply: TVcc, RVcc, DVcc
6V
Storage Temperature
-65 to 150°C
Soldering Temperature (10 sec.)
260 °C
Ambient Operating Temperature, TA
-40 to +85°C
Pin Ratings: LOUT+, LOUT-
Vcc -2 to Vcc +2V
LIN+, LIN-, TPOS, TNEG, TCLK, LBO, RFO, LF2, LF1,
OPT!, OPT@ Pins
-0.3 to Vcc +0.3V
RPOS, RNEG, RCLK, LOWSIG Pins
-0.3 to Vcc +0.3V or +12 mA
SUPPLY CURRENTS AND POWER
PARAMETER
CONDITIONS
MIN
NOM
MAX
UNIT
Supply Current
ICC
Outputs unloaded, normal
operation, transmit and receive
all 1's pattern
155
190
mA
Power Dissipation
P
Outputs unloaded, TA = 85°C
0.93
W
EXTERNAL COMPONENTS (Common to STS-1/DS3/E3, nominal value)
Loop filter resistor
RLF1
1% tolerance
6.04
k
Ω
Loop filter resistor
RLF2
1%
100
k
Ω
Loop filter capacitor
CLF1
5%
0.22
µF
Peak detector capacitor
CPD
10%
0.022
µF
Input Filter
R1, R2
1%
75
Ω
Input Filter
C1
5%
1000
pF
Input Filter
C2
5%
82
pF
Input Filter
C3
20% (See Note)
0.01
µF
Input Filter
L1
5%
0.47
µH
Input Filter
L2
5%
6.8
µH
Transformer Turns Ratio
T1, T2
3%
1:2
Receiver Termination ResistorRTR
1%
422
Ω
Note: Optional capacitor to reduce common mode noise.
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