Ethernet 20 MBd Link (HFBR-14x4/24x6)
(refer to Application Note 1038 for details)
Typical Link Performance
Parameter
Receiver Sensitivity
Symbol
Typ [1, 2]
-34.4
Units
dBm average
Conditions
20 MBd D2D2 hexadecimal data
2 km 62.5/125 µm fiber
ECL Out Receiver
TTL Out Receiver
20 MBd D2D2 hexadecimal data
20 MBd D2D2 hexadecimal data
Peak I
F,ON
= 60 mA
1 MHz square wave input
Link Jitter
7.56
7.03
0.763
P
T
t
r
t
f
|t
r
- t
f
|
BER
-15.2
ns pk-pk
ns pk-pk
ns pk-pk
dBm average
Transmitter Jitter
Optical Power
LED Rise Time
LED Fall Time
Mean Difference
Bit Error Rate
Output Eye Opening
Data Format 50% Duty Factor
1.30
3.08
1.77
10
-10
36.7
20
ns
ns
ns
ns
MBd
At AUI receiver output
Notes:
1. Typical data at T
A
= +25 °C, V
CC
= 5.0 V dc.
2. Typical performance of circuits shown in Figure 1 and Figure 3 of AN-1038 (see applications support section).
Token Ring 32 MBd Link (HFBR-14x4/24x6)
(refer to Application Note 1065 for details)
Typical Link Performance
Parameter
Receiver Sensitivity
Symbol
Typ [1, 2]
-34.1
Units
dBm average
Conditions
32 MBd D2D2 hexadecimal data
2 km 62.5/125 µm fiber
ECL Out Receiver
TTL Out Receiver
32 MBd D2D2 hexadecimal data
Transmitter TTL in I
F ON
= 60 mA,
I
F OFF
= 1 mA
1 MHz square wave input
Link Jitter
6.91
5.52
0.823
P
T
ON
P
T
OFF
t
r
t
f
|t
r
- t
f
|
BER
-12.2
-82.2
1.3
3.08
1.77
10
-10
32
ns pk-pk
ns pk-pk
ns pk-pk
dBm peak
Transmitter Jitter
Optical Power Logic Level "0"
Optical Power Logic Level "1"
LED Rise Time
LED Fall Time
Mean Difference
Bit Error Rate
Data Format 50% Duty Factor
ns
ns
ns
MBd
Notes:
1. Typical data at T
A
= +25 °C, V
CC
= 5.0 V dc.
2. Typical performance of circuits shown in Figure 1 and Figure 3 of AN-1065 (see applications support section)
13
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