10
1 MBd Link
(High Performance HFBR-15X2/25X2, Standard HFBR-15X4/25X4)
System Performance Under recommended operating conditions unless otherwise specified.
Parameter Symbol Min. Typ. Max. Units Conditions Ref.
High Data Rate dc 1 MBd BER ≤10
-9
, PRBS:2
7
-1
Link Distance 39 m I
Fdc
= 60 mA Fig. 14
(Standard Cable) 47 70 m I
Fdc
= 60 mA, 25°C Notes 1,
3, 4
Link Distance 45 m I
Fdc
= 60 mA Fig. 15
(Improved Cable) 56 78 m I
Fdc
= 60 mA, 25°C Notes 1,
3, 4
Propagation t
PLH
180 250 ns R
L
= 560 Ω, C
L
= 30 pF Fig. 16, 18
Delay t
PHL
100 140 ns I = 0.5 metre Notes 2, 4
P
R
= -24 dBm
Pulse Width t
D
80 ns P
R
= -24 dBm Fig. 16, 17
Distortion t
PLH
-t
PHL
R
L
= 560 Ω, C
L
= 30 pF Note 4
Performance
1 MBd
Parameter Symbol Min. Typ. Max. Units Conditions Ref.
Standard Data Rate dc 1 MBd BER ≤10
-9
, PRBS:2
7
-1
Link Distance 8 m I
Fdc
= 60 mA Fig. 12
(Standard Cable) 17 43 m I
Fdc
= 60 mA, 25°C Notes 1,
3, 4
Link Distance 10 m I
Fdc
= 60 mA Fig. 13
(Improved Cable) 19 48 m I
Fdc
= 60 mA, 25°C Notes 1,
3, 4
Propagation t
PLH
180 250 ns R
L
= 560 Ω, C
L
= 30 pF Fig. 16, 18
Delay t
PHL
100 140 ns I = 0.5 metre Notes 2, 4
P
R
= -20 dBm
Pulse Width t
D
80 ns P
R
= -20 dBm Fig. 16, 17
Distortion t
PLH
-t
PHL
R
L
= 560 Ω, C
L
= 30 pF Note 4
Notes:
1. For I
FPK
> 80 mA, the duty factor must be such as to keep I
Fdc
≤80 mA. In addition, for I
FPK
> 80 mA, the following rules for pulse width apply:
I
FPK
≤160 mA: Pulse width ≤1 ms
I
FPK
> 160 mA: Pulse width ≤1 µS, period ≥20 µS.
2. The propagation delay for one meter of cable is typically 5 ns.
3. Estimated typical link life expectancy at 40°C exceeds 10 years at 60 mA.
4. Pulsed LED operation at I
FPK
> 80 mA will cause increased link t
PLH
propagation delay time. This extended t
PLH
time contributes to increased pulse
width distortion of the receiver output signal.
1 MBd
