applications. This pair, together with a multimode
parallel fiber ribbon cable, constitute a complete
parallel fiber link. The link provides high-speed
interconnects for use within and between large
capacity switches, routers and data transport
equipment. The transmitter and receiver have a
differential CML interface and support MPX, MPO/
MTP and MT fiber connectors.
Figure 1 - MFR62340-JX: MPX Connector Option
1
MFR62340-J
Absolute Maximum Ratings*
Parameter
1
2
3
4
5
Supply voltage
Voltage on any pin
Operating and storage moisture
Storage temperature
ESD resistance all I/O
Symbol
V
CC
V
PIN
M
OS
T
STG
V
E
Advance Information
Min
-0.5
-0.5
20
-20
-2
Max
4.0
V
CC
+0.3
85
100
2
Unit
V
V
%
°C
kV
* Exceeding these values may cause permanent damage. Functional operation under these conditions is not implied.
Recommended Operating Conditions
Parameter
1
2
3
4
5
6
Case temperature
Supply voltage
Average fiber input power per channel
Data rate per channel
Optical wavelength
CML output load impedance
(Fig. 2)
Symbol
T
CASE
V
CC
P
F
f
D
λ
Z
L
Min
0
3.3-5%
-18
0.155
800
80
Max
80
3.3+5%
-3
2.5
860
120
Unit
°C
V
dBm
Gbps
nm
Ω
Test pattern PRBS 2
31
-1 at 2.5Gbps and 50% duty cycle unless otherwise specified.
Characteristics*
Parameter
1
2
3
4
5
6
7
8
Power consumption
(0.155 to 2.5 Gbps)
Sensitivity (BER 10
-15
)
Sensitivity (BER 10
-12
)
Symbol
P
D
S
15
S
12
DJ
RJ
t
RC
, t
FC
V
OCML
Z
OUT
Min
Typ
1.8
Max
2.4
-15
-18
50
11
100
Unit
W
dBm
dBm
ps
p-p
ps
rms
ps
mV
Ω
Deterministic jitter
Random jitter
(PF = -15dBm, ER = 6dB)
CML differential output rise/fall time
(20-80%, Fig. 3)
CML differential output voltage
(Fig. 2,3)
CML differential output impedance
(Fig. 2)
300
160
350
200
450
240
* Supply voltage and operating temperature are as per Recommended Operating Conditions
2
Advance Information
MFR62340-J
MFR62340 CML Output
+3.3V
100nF
Z
out
=200Ω
Differential
100nF
Recommended CML Input
50Ω
Z
in
=100Ω
Differential
50Ω
Figure 2 - Differential CML Interface
Data
80%
V
OCML
20%
Data Inv
t
RC
t
FC
Figure 3 - Differential CML Timing Diagram
3
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