corresponds to transceiver solu-
tions combining the HFBR-0400
series components and various
recommended transceiver design
circuits using off-the-shelf
example of typical link perform-
ance for a given design and does
not call out any link limitations.
Please refer to the appropriate
application note given for each
link to obtain more information.
The following technical data is
taken from 4 popular links using
the HFBR-0400 series: the 5 MBd
link, Ethernet 20 MBd link,
Token Ring 32 MBd link, and the
155 MBd link. The data given
electrical components. This data
is meant to be regarded as an
Link Performance -40°C to +85°C unless otherwise specified
Optical Power Budget
with 50/125 µm fiber
Optical Power Budget
with 62.5/125 µm fiber
Optical Power Budget
with 100/140 µm fiber
Optical Power Budget
with 200 µm fiber
OPB
OPB
OPB
OPB
4.2
8.0
8.0
12
9.6
15
15
20
dB
dB
dB
dB
HFBR-14X4/24X2
NA = 0.2
HFBR-14X4/24X2
NA = 0.27
HFBR-14X2/24X2
NA = 0.30
HFBR-14X2/24X2
NA = 0.37
Note 1
Note 1
Note 1
Note 1
Note 2
50
62.5
100
200
Date Rate Synchronous
Asynchronous
dc
dc
5
2.5
MBd
MBd
Note 3,
Fig. 7
Propagation Delay
LOW to HIGH
Propagation Delay
HIGH to LOW
System Pulse Width
Distortion
Bit Error Rate
t
t
t
72
46
26
ns
ns
ns
T = 25°C,
P = -21 dBm Peak
R
Figs. 6, 7, 8
PLH
PHL
A
-t
Fiber cable
length = 1 m
Data Rate <5 Bd
PLH PHL
-9
BER
10
P > -24 dBm Peak
R
1. OPB at T = -40 to 85°C, V = 5.0 V dc, I
= 60 mA. P = -24 dBm peak.
R
A
CC
F ON
2. Synchronous data rate limit is based on these assumptions: a) 50% duty factor modulation, e.g., Manchester I or BiPhase
Manchester II; b) continuous data; c) PLL Phase Lock Loop demodulation; d) TTL threshold.
3. Asynchronous data rate limit is based on these assumptions: a) NRZ data; b) arbitrary timing-no duty factor restriction; c) TTL
threshold.
55