Versatile Link
The Versatile Fiber Optic
Connection
Technical Data
HFBR-0501 Series
Features
• Low Cost Fiber Optic
Components
• Enhanced Digital Links
dc-5 MBd
• Extended Distance Links up
to 120 m at 40 kBd
• Low Current Link: 6 mA
Peak Supply Current
• Horizontal and Vertical
Mounting
• Interlocking Feature
• High Noise Immunity
• Easy Connectoring
Simplex, Duplex, and
Latching Connectors
• Flame Retardant
• Transmitters Incorporate a
660 nm Red LED for Easy
Visibility
• Compatible with Standard
TTL Circuitry
Applications
• Reduction of Lightning/Volt-
age Transient Susceptibility
• Motor Controller Triggering
• Data Communications and
Local Area Networks
• Electromagnetic
Compatibility (EMC) for
Regulated Systems: FCC,
VDE, CSA, etc.
• Tempest-Secure Data
Processing Equipment
• Isolation in Test and
Measurement Instruments
• Error Free Signalling for
Industrial and Manufactur-
ing Equipment
• Automotive Communications
and Control Networks
• Noise Immune Communica-
tion in Audio and Video
Equipment
Description
The Versatile Link series is a
complete family of fiber optic link
components for applications
requiring a low cost solution. The
HFBR-0501 series includes trans-
mitters, receivers, connectors and
cable specified for easy design.
This series of components is ideal
for solving problems with voltage
isolation/insulation, EMI/RFI
immunity or data security. The
optical link design is simplified
by the logic compatible receivers
and complete specifications for
each component. The key optical
and electrical parameters of links
configured with the HFBR-0501
family are fully guaranteed from
0° to 70°C.
A wide variety of package config-
urations and connectors provide
the designer with numerous
mechanical solutions to meet
application requirements. The
transmitter and receiver compo-
nents have been designed for use
in high volume/low cost assembly
processes such as auto insertion
and wave soldering.
Transmitters incorporate a 660
nm LED. Receivers include a
monolithic dc coupled, digital IC
receiver with open collector
Schottky output transistor. An
internal pullup resistor is avail-
able for use in the HFBR-25X1/2/
4 receivers. A shield has been
integrated into the receiver IC to
provide additional, localized noise
immunity.
Internal optics have been optim-
ized for use with 1 mm diameter
plastic optical fiber. Versatile
Link specifications incorporate
all connector interface losses.
Therefore, optical calculations for
common link applications are
simplified.
2
HFBR-0501 Series Part Number Guide
HFBR X5XX
1 = Transmitter
2 = Receiver
5 = 600 nm Transmitter and
Receiver Products 1 = 5 MBd High Performance Link
2 = 1 MBd High Performance Link
3 = 40 kBd Low Current/Extended Distance Link
2 = Horizontal Package 4 = 1 MBd Standard Link
3 = Vertical Package 6 = 155 MBd Receiver
7 = 155 MBd Transmitter
8 = 10 MBd High Performance Link
Link Selection Guide
(Links specified from 0 to 70°C, for plastic optical fiber unless specified.)
Signal Rate Distance (m) 25°C Distance (m) Transmitter Receiver
40 kBd 120 110 HFBR-1523 HFBR-2523
1 MBd 20 10 HFBR-1524 HFBR-2524
1 MBd 55 45 HFBR-1522 HFBR-2522
5 Mbd 30 20 HFBR-1521 HFBR-2521
Evaluation Kit
HFBR-0501 1 MBd Versatile Link:
This kit contains: HFBR-1524 Tx, HFBR-2524 Rx, polishing kit, 3 styles of plastic connectors, Bulkhead
feedthrough, 5 meters of 1 mm diameter plastic cable, lapping film and grit paper, and HFBR-0501 data
sheet.
Application Literature
Application Note 1035 (Versatile Link)
VALOX® is a registered trademark of the General Electric Corporation.
Package and Handling
Information
The compact Versatilie Link
package is made of a flame
retardant VALOX® UL V-0
material (UL file # E121562)
material and uses the same pad
layout as a standard, eight pin
dual-in-line package. Vertical and
horizontal mountable parts are
available. These low profile
Versatile Link packages are
stackable and are enclosed to
provide a dust resistant seal.
Snap action simplex, simplex
latching, duplex, and duplex
latching connectors are offered
with simplex or duplex cables.
Package Orientation
Performance and pinouts for the
vertical and horizontal packages
are identical. To provide addi-
tional attachment support for the
vertical Versatile Link housing,
the designer has the option of
using a self-tapping screw
through a printed circuit board
into a mounting hole at the
bottom of the package. For most
applications this is not necessary.
Package Housing Color
Versatile Link components and
simplex connectors are color
coded to eliminate confusion
3
6.8
(0.270) 10.2
(0.400)
4.2
(0.165)
1.27
(0.050)
2.5
(0.100)
0.51
(0.020)
18.8
(0.740)
2.0
(0.080)
7.71
(0.305)
0.64
(0.025)
7.62
(0.300)
2.8
(0.109) 1.85
(0.073)
0.64 (0.025) DIA.
5.1
(0.200)
3.81 (0.150) MAX.
3.56 (0.140) MIN.
when making connections.
Receivers are blue and transmit-
ters are gray, except for the
HFBR-15X3 transmitter, which is
black.
All of the above transmitters and
receivers are also available in
black versions for applications
where improved housing opacity
is required due to very bright
ambient light or bright flashes of
light.
Handling
Versatile Link components are
auto-insertable. When wave
soldering is performed with
Versatile Link components, the
optical port plug should be left in
to prevent contamination of the
port. Water soluble fluxes, not
rosin based fluxes, are recom-
mended for use with Versatile
Link components.
Versatile Link components are
moisture sensitive devices and
are shipped in a moisture sealed
bag. If the components are
exposed to air for an extended
period of time, they may require
a baking step before the solder-
ing process. Refer to the special
labeling on the shipping tube for
details.
Mechanical Dimensions
Horizontal Modules Vertical Modules
Recommended Chemicals for
Cleaning/Degreasing
Alcohols: methyl, isopropyl,
isobutyl. Aliphatics: hexane,
heptane, Other: soap solution,
naphtha.
Do not use partially halogenated
hydrocarbons such as 1,1.1
trichloroethane, ketones such as
MEK, acetone, chloroform, ethyl
acetate, methylene dichloride,
phenol, methylene chloride, or N-
methylpyrolldone. Also, Agilent
does not recommend the use of
cleaners that use halogenated
hydrocarbons because of their
potential environmental harm.
18.8
0.740
7.6
(0.30)
7.6
(0.30)
4
Versatile Link Printed Board Layout Dimensions
Horizontal Module Vertical Module
Interlocked (Stacked)
Assemblies (refer to
Figure 1)
Horizontal packages may be
stacked by placing units with pins
facing upward. Initially engage
the interlocking mechanism by
sliding the L bracket body from
above into the L slot body of the
lower package. Use a straight
edge, such as a ruler, to bring all
stacked units into uniform
alignment. This technique
prevents potential harm that
could occur to fingers and hands
of assemblers from the package
pins. Stacked horizontal packages
can be disengaged if necessary.
Repeated stacking and unstack-
ing causes no damage to
individual units.
To stack vertical packages, hold
one unit in each hand, with the
pins facing away and the optical
ports on the bottom. Slide the L
bracket unit into the L slot unit.
The straight edge used for
horizontal package alignment is
not needed.
Stacking Horizontal Modules
Figure 1. Interlocked (Stacked) Horizontal or Vertical Packages.
4 13 2
5 6
7.62
(0.300)
1.01 (0.040) DIA.
1.85
(0.073) MIN.
TOP VIEW
2.54
(0.100)
7.62
(0.300)
DIMENSIONS IN MILLIMETERS (INCHES).
PCB EDGE
Stacking Vertical Modules
5
5 MBd Link (HFBR-15X1/25X1)
System Performance 0 to 70°C unless otherwise specified.
Parameter Symbol Min. Typ. Max. Units Conditions Ref.
High Data Rate dc 5 MBd BER ≤10-9, PRBS:27-1
Link Distance 19 m IFdc = 60 mA Fig. 3
(Standard Cable) 27 48 m IFdc = 60 mA, 25°C Note 3
Link Distance 22 m IFdc = 60 mA Fig. 4
(Improved Cable) 27 53 m IFdc = 60 mA, 25°C Note 3
Propagation tPLH 80 140 ns RL = 560 Ω, CL = 30 pF Fig. 5, 8
Delay tPHL 50 140 ns fiber length = 0.5 m Notes 1, 2
-21.6 ≤PR ≤-9.5 dBm
Pulse Width tD30 ns PR = -15 dBm Fig. 5, 7
Distortion tPLH-tPHL RL = 560 Ω, CL = 30 pF
Notes:
1. The propagation delay for one metre of cable is typically 5 ns.
2. Typical propagation delay is measured at PR = -15 dBm.
3. Estimated typical link life expectancy at 40°C exceeds 10 years at 60 mA.
Figure 2. Typical 5 MBd Interface Circuit.
Figure 4. Guaranteed System Performance with Improved
Cable (HFBR-15X1/25X1).
Figure 3. Guaranteed System Performance with Standard
Cable (HFBR-15X1/25X1).
Performance
5 MBd
10
0
50
40
30
20
10
501020304050
I – FORWARD CURRENT (mA)
F
– CABLE LENGTH – METRES
60
25°C
0°C–70°C
OVERDRIVE
UNDERDRIVE
10
0
50
40
30
20
10
50 1020 304050
I – FORWARD CURRENT (mA)
F
– CABLE LENGTH – METRES
OVERDRIVE
UNDERDRIVE
25°C
0°C–70°C
6
Figure 5. 5 MBd Propagation Delay Test Circuit.
Figure 8. Typical Link Propagation Delay vs. Optical Power.Figure 7. Typical Link Pulse Width Distortion vs.
Optical Power.
Figure 6. Propagation Delay Test Waveforms.
t
D
– PULSE WIDTH DISTORTION – ns
-25
500
200
0
P
R
– INPUT OPTICAL POWER – dBm
-20 -15 -5
400
100
300
-10 0
70°C
25°C
0°C
HFBR-15X1/25X1
HFBR-15X2/25X2
HFBR-15X4/25X4
70°C
25°C
0°C
t
p
– PROPAGATION DELAY – ns
-25
500
200
0
P
R
– INPUT OPTICAL POWER – dBm
-20 -15 -5
400
100
300
-10 0
HFBR-15X1/25X1
HFBR-15X2/25X2
HFBR-15X4/25X4
t
pLH
t
pHL
t
pLH
7
Absolute Maximum Ratings
Parameter Symbol Min. Max. Units Reference
Storage Temperature TS-40 +75 °C
Operating Temperature T
A0 +70 °C
Lead Soldering Cycle Temp. 260 °C Note 1
Time 10 sec
Forward Input Current IFPK 1000 mA Note 2, 3
IFdc 80
Reverse Input Voltage VBR 5V
Notes:
1. 1.6 mm below seating plane.
2. Recommended operating range between 10 and 750 mA.
3. 1 µs pulse, 20 µs period.
Pin # Function
1 Anode
2 Cathode
3 Open
4 Open
5 Do not connect
8 Do not connect
Note: Pins 5 and 8 are for mounting and
retaining purposes only. Do not
electrically connect these pins.
HFBR-15X1 Transmitter
All HFBR-15XX LED transmitters are classified as IEC 825-1 Accessible
Emission Limit (AEL) Class 1 based upon the current proposed draft scheduled
to go into effect on January 1, 1997. AEL Class 1 LED devices are considered
eye safe. Contact your local Agilent sales representative for more information.
ANODE 1
CATHODE 2
N.C. 3
N.C. 4
8 DO NOT CONNECT
5 DO NOT CONNECT
8
Transmitter Electrical/Optical Characteristics 0°C to 70°C unless otherwise specified.
Parameter Symbol Min. Typ.[5] Max. Units Conditions Ref.
Transmitter Output PT-16.5 -7.6 dBm IFdc = 60 mA Notes 1, 2
-14.3 -8.0 dBm IFdc = 60 mA, 25°C
Output Optical Power ∆PT/∆T -0.85 %/°C
Temperature Coefficient
Peak Emission λPK 660 nm
Wavelength
Forward Voltage VF1.45 1.67 2.02 V IFdc = 60 mA
Forward Voltage ∆VF/∆T -1.37 mV/°C Fig. 9
Temperature Coefficient
Effective Diameter D 1 mm
Numerical Aperture NA 0.5
Reverse Input Breakdown VBR 5.0 11.0 V IFdc = 10 µA,
Voltage TA = 25°C
Diode Capacitance CO86 pF VF = 0, f = MHz
Rise Time tr80 ns 10% to 90%, Note 3
Fall Time tf40 ns
Notes:
1. Measured at the end of 0.5 m standard fiber optic cable with large area detector.
2. Optical power, P (dBm) = 10 Log [P(µW)/1000 µW].
3. Rise and fall times are measured with a voltage pulse driving the transmitter and a series connected 50 Ω load. A wide bandwidth
optical to electrical waveform analyzer, terminated to a 50 Ω input of a wide bandwidth oscilloscope, is used for this response time
measurement.
IF = 60 mA
Figure 9. Typical Forward Voltage vs. Drive Current. Figure 10. Normalized Typical Output Power vs. Drive
Current.
Optical Power
V
F
– FORWARD VOLTAGE – V
2
1.8
1.6
1.4
I
Fdc
– TRANSMITTER DRIVE CURRENT (mA)
10
1.7
1.5
100
70°C
25°C
0°C
P
T
– NORMALIZED OUTPUT POWER – dB
2
5
-5
-20
I
Fdc
– TRANSMITTER DRIVE CURRENT (mA)
10
0
-15
100
-10
9
Receiver Electrical/Optical Characteristics
0°C to 70°C, 4.75 V ≤VCC ≤5.25 V unless otherwise specified
Parameter Symbol Min. Typ. Max. Units Conditions Ref.
Input Optical Power PR(L) -21.6 -9.5 dBm VOL = 0.5 V Notes 1,
Level for Logic “0” IOL = 8 mA 2, 4
-21.6 -8.7 VOL = 0.5 V
IOL = 8 mA, 25°C
Input Optical Power PR(H) -43 dBm VOL = 5.25 V Note 1
Level for Logic “1” IOH ≤250 µA
High Level Output Current IOH 5 250 µAV
O
= 18 V, PR = 0 Note 3
Low Level Output Current VOL 0.4 0.5 V IOL = 8 mA, Note 3
PR = PR(L)MIN
High Level Supply ICCH 3.5 6.3 mA VCC = 5.25 V, Note 3
Current PR = 0
Low Level Supply Current ICCL 6.2 10 mA VCC = 5.25 V Note 3
PR = -12.5 dBm
Effective Diameter D 1 mm
Numerical Aperture NA 0.5
Internal Pull-up Resistor RL680 1000 1700 Ω
Notes:
1. Optical flux, P (dBm) = 10 Log [P (µW)/1000 µW].
2. Measured at the end of the fiber optic cable with large area detector.
3. RL is open.
4. Pulsed LED operation at IF > 80 mA will cause increased link tPLH propagation delay time. This extended tPLH time contributes to
increased pulse width distortion of the receiver output signal.
Absolute Maximum Ratings
Parameter Symbol Min. Max. Units Reference
Storage Temperature TS-40 +75 °C
Operating Temperature T
A0 +70 °C
Lead Soldering Cycle Temp. 260 °C Note 1
Time 10 sec
Supply Voltage VCC -0.5 7 V Note 2
Output Collector Current IOAV 25 mA
Output Collector Power Dissipation POD 40 mW
Output Voltage VO-0.5 18 V
Pull-up Voltage VP-5 VCC V
Fan Out (TTL) N 5
Notes:
1. 1.6 mm below seating plane.
2. It is essential that a bypass capacitor 0.01 µF be connected from pin 2 to pin 3 of the receiver. Total lead length between both ends
of the capacitor and the pins should not exceed 20 mm.
Pin # Function
1V
O
2 Ground
3V
CC
4R
L
5 Do not connect
8 Do not connect
Note: Pins 5 and 8 are for mounting and
retaining purposes only. Do not
electrically connect these pins.
HFBR-25X1 Receiver
4
3
2
1
DO NOT CONNECT 5
DO NOT CONNECT 8
R
L
V
CC
GROUND
V
O
1000 Ω
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:27-1
Link Distance 39 m IFdc = 60 mA Fig. 14
(Standard Cable) 47 70 m IFdc = 60 mA, 25°C Notes 1,
3, 4
Link Distance 45 m IFdc = 60 mA Fig. 15
(Improved Cable) 56 78 m IFdc = 60 mA, 25°C Notes 1,
3, 4
Propagation tPLH 180 250 ns RL = 560 Ω, CL = 30 pF Fig. 16, 18
Delay tPHL 100 140 ns I = 0.5 metre Notes 2, 4
PR = -24 dBm
Pulse Width tD80 ns PR = -24 dBm Fig. 16, 17
Distortion tPLH-tPHL RL = 560 Ω, CL = 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:27-1
Link Distance 8 m IFdc = 60 mA Fig. 12
(Standard Cable) 17 43 m IFdc = 60 mA, 25°C Notes 1,
3, 4
Link Distance 10 m IFdc = 60 mA Fig. 13
(Improved Cable) 19 48 m IFdc = 60 mA, 25°C Notes 1,
3, 4
Propagation tPLH 180 250 ns RL = 560 Ω, CL = 30 pF Fig. 16, 18
Delay tPHL 100 140 ns I = 0.5 metre Notes 2, 4
PR = -20 dBm
Pulse Width tD80 ns PR = -20 dBm Fig. 16, 17
Distortion tPLH-tPHL RL = 560 Ω, CL = 30 pF Note 4
Notes:
1. For IFPK > 80 mA, the duty factor must be such as to keep IFdc ≤80 mA. In addition, for IFPK > 80 mA, the following rules for
pulse width apply:
IFPK ≤160 mA: Pulse width ≤1 ms
IFPK > 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 IFPK > 80 mA will cause increased link tPLH propagation delay time. This extended tPLH time contributes
to increased pulse width distortion of the receiver output signal.
1 MBd
11
Figure 11. Required 1 MBd Interface Circuit.
Figure 15. Guaranteed System Performance for the
HFBR-15X2/25X2 Link with Improved Cable.
Figure 14. Guaranteed System Performance for the
HFBR-15X2/25X2 Link with Standard Cable.
Figure 13. Guaranteed System Performance for the
HFBR-15X4/25X4 Link with Improved Cable.
Figure 12. Guaranteed System Performance for the
HFBR-15X4/25X4 Link with Standard Cable.
80
70
50
60
40
30
05 2010 2515
I – FORWARD CURRENT (mA)
F
– CABLE LENGTH – METRES
10
0
90
20
HFBR-15X4/25X4
0°C–70°C
25°C
80
70
50
60
40
30
02010 30
I – FORWARD CURRENT (mA)
F
– CABLE LENGTH – METRES
10
0
90
20
HFBR-15X4/25X4
0°C–70°C
25°C
100
50
40
30
20
10
50 1020 304050
I
F
– FORWARD CURRENT (mA)
– CABLE LENGTH – METRES
UNDERDRIVE
25°C
0°C–70°C
100
50
40
30
20
10
501020304050
I
F
– FORWARD CURRENT (mA)
– CABLE LENGTH – METRES
60
25°C
0°C–70°C
UNDERDRIVE
The HFBR-25X2 receiver can not be overdriven when using the
required interface circuit shown in Figure 11.
12
Figure 17. Pulse Width Distortion vs.
Optical Power.
Figure 16. 1 MBd Propagation Delay Test Circuit.
Figure 19. Propagation Delay Test
Waveforms.
Figure 18. Typical Link Propagation
Delay vs. Optical Power.
t
D
– PULSE WIDTH DISTORTION – ns
-25
500
200
0
P
R
– INPUT OPTICAL POWER – dBm
-20 -15 -5
400
100
300
-10 0
70°C
25°C
0°C
HFBR-15X1/25X1
HFBR-15X2/25X2
HFBR-15X4/25X4
70°C
25°C
0°C
t
p
– PROPAGATION DELAY – ns
-25
500
200
0
P
R
– INPUT OPTICAL POWER – dBm
-20 -15 -5
400
100
300
-10 0
HFBR-15X1/25X1
HFBR-15X2/25X2
HFBR-15X4/25X4
t
pLH
t
pHL
t
pLH
13
Pin # Function
1 Anode
2 Cathode
3 Open
4 Open
5 Do not connect
8 Do not connect
Note: Pins 5 and 8 are for mounting and
retaining purposes only. Do not
electrically connect these pins.
HFBR-15X2/15X4 Transmitters
All HFBR-15XX LED transmitters are classified as IEC 825-1 Accessible
Emission Limit (AEL) Class 1 based upon the current proposed draft scheduled
to go into effect on January 1, 1997. AEL Class 1 LED devices are considered
eye safe. Contact your Agilent sales representative for more information.
Transmitter Electrical/Optical Characteristics 0°C to 70°C unless otherwise specified.
For forward voltage and output power vs. drive current graphs.
Parameter Symbol Min. Typ. Max. Units Conditions Ref.
Transmitter HFBR-15X2 PT-13.6 -4.5 dBm IFdc = 60 mA
-11.2 -5.1 IFdc = 60 mA, 25°C
HFBR-15X4 PT-17.8 -4.5 dBm IFdc = 60 mA
-15.5 -5.1 IFdc = 60 mA, 25°C
Output Optical Power ∆PT/∆T -0.85 %/°C
Temperature Coefficient
Peak Emission Wavelength λPK 660 nm
Forward Voltage VF1.45 1.67 2.02 V IFdc = 60 mA
Forward Voltage ∆VF/∆T -1.37 mV/°C Fig. 11
Temperature Coefficient
Effective Diameter DT1mm
Numerical Aperture NA 0.5
Reverse Input Breakdown VBR 5.0 11.0 V IFdc = 10 µA,
Voltage T
A = 25°C
Diode Capacitance CO86 pF VF = 0, f = 1 MHz
Rise Time tr80 ns 10% to 90%, Note 1
Fall Time tf40 ns
Note:
1. Rise and fall times are measured with a voltage pulse driving the transmitter and a series connected 50 Ω load. A wide bandwidth
optical to electrical waveform analyzer, terminated to a 50 Ω input of a wide bandwidth oscilloscope, is used for this response time
measurement.
IF = 60 mA
Output
Optical
Power
ANODE 1
CATHODE 2
N.C. 3
N.C. 4
8 DO NOT CONNECT
5 DO NOT CONNECT
Absolute Maximum Ratings
Parameter Symbol Min. Max. Units Reference
Storage Temperature TS-40 +75 °C
Operating Temperature TA0 +70 °C
Lead Soldering Cycle Temp. 260 °C Note 1
Time 10 sec
Forward Input Current IFPK 1000 mA Note 2, 3
IFdc 80
Reverse Input Voltage VBR 5V
Notes:
1. 1.6 mm below seating plane.
2. Recommended operating range between 10 and 750 mA.
3. 1 µs pulse, 20 µs period.
14
Receiver Electrical/Optical Characteristics 0°C to 70°C, 4.75 V ≤VCC ≤5.25 V unless otherwise
specified.
Parameter Symbol Min. Typ. Max. Units Conditions Ref.
Receiver HFBR-2522 PR(L) -24 dBm VOL = 0 V Notes 1, 2, 3
IOL = 8 mA
HFBR-2524 -20 Note 4
Optical Input Power PR(H) -43 dBm VOH = 5.25 V
Level Logic 1 IOH = ≤250 µA
High Level Output Current IOH 5 250 µAV
O
= 18 V, PR = 0 Note 5
Low Level Output Voltage VOL 0.4 0.5 V IOL = 8 mA Note 5
PR = PR(L)MIN
High Level Supply Current ICCH 3.5 6.3 mA VCC = 5.25 V, Note 5
PR = 0
Low Level Supply Current ICCL 6.2 10 mA VCC = 5.25 V, Note 5
PR = -12.5 dBm
Effective Diameter D 1 mm
Numerical Aperture NA 0.5
Internal Pull-up Resistor RL680 1000 1700 Ω
Notes:
1. Measured at the end of the fiber optic cable with large area detector.
2. Pulsed LED operation at IF > 80 mA will cause increased link tPLH propagation delay time. This extended tPLH time contributes to
increased pulse width distortion of the receiver output signal.
3. The LED drive circuit of Figure 11 is required for 1 MBd operation of the HFBR-25X2/25X4.
4. Optical flux, P (dBm) = 10 Log [P(µW)/1000 µW].
5. RL is open.
Absolute Maximum Ratings
Parameter Symbol Min. Max. Units Reference
Storage Temperature TS-40 +75 °C
Operating Temperature TA0 +70 °C
Lead Soldering Cycle Temp. 260 °C Note 1
Time 10 sec
Supply Voltage VCC -0.5 7 V Note 2
Output Collector Current IOAV 25 mA
Output Collector Power Dissipation POD 40 mW
Output Voltage VO-0.5 18 V
Pull-up Voltage VP-5 VCC V
Fan Out (TTL) N 5
Notes:
1. 1.6 mm below seating plane.
2. It is essential that a bypass capacitor 0.01 µF be connected from pin 2 to pin 3 of the receiver. Total lead length between both ends
of the capacitor and the pins should not exceed 20 mm.
Pin # Function
1V
O
2 Ground
3V
CC
4R
L
5 Do not connect
8 Do not connect
Note: Pins 5 and 8 are for mounting and
retaining purposes only. Do not
electrically connect these pins.
HFBR-25X2/25X4 Receivers
Optical Input
Power Level
Logic 0
4
3
2
1
DO NOT CONNECT 5
DO NOT CONNECT 8
R
L
V
CC
GROUND
V
O
1000 Ω
15
40 kBd Link
System Performance Under recommended operating conditions unless otherwise specified.
Parameter Symbol Min. Typ. Max. Units Conditions Ref.
Data Rate dc 40 kBd BER ≤10-9, PRBS: 27 - 1
Link Distance 13 41 m IFdc = 2 mA Fig. 21
(Standard Cable) 94 138 m IFdc = 60 mA Note 1
Link Distance 15 45 m IFdc = 2 mA Fig. 22
(Improved Cable) 111 154 m IFdc = 60 mA Note 1
Propagation tPLH 4µsR
L
= 3.3 kΩ, CL = 30 pF Fig. 22, 25
Delay tPHL 2.5 µsP
R
= -25 dBm, 1 m fiber Note 2
Pulse Width tD7µs -39 ≤PR≤- 14 dBm Fig. 23, 24
Distortion tPLH-tPHL RL = 3.3 kΩ, CL = 30 pF
Notes:
1. Estimated typical link life expectancy at 40°C exceeds 10 years at 60 mA.
2. The propagation delay for one metre of cable is typically 5 ns.
Figure 20. Typical 40 kBd Interface Circuit.
Figure 22. Guaranteed System Performance with Improved
Cable.
Figure 21. Guaranteed System Performance with
Standard Cable.
12
0
60
40
10
20
6
4
0 1020304050
I – FORWARD CURRENT (mA)
F
– CABLE LENGTH – METRES
60
HFBR-15X3/25X3
0°C–70°C
25°C
70 80 90 100
10
0
80
2
1
12
0
60
40
10
20
6
4
01020304050
I – FORWARD CURRENT (mA)
F
– CABLE LENGTH – METRES
60 70 80 90 100
10
0
80
2110
HFBR-15X3/25X3
0°C–70°C
25°C
16
Figure 23. 40 kBd Propagation Delay Test Circuit.
Figure 26. Propagation Delay Test Waveforms.
Figure 25. Typical Link Propagation Delay vs. Optical
Power.
Figure 24. Typical Link Pulse Width Distortion vs.
Optical Power.
5
3
4
2
1
-40 -28-34 -10
t – PULSE WIDTH DISTORTION – µs
D
6
0-22 -16
P – INPUT OPTICAL POWER, dBm
R
5
3
4
2
1
-40 -28-34 -10
t – PROPAGATION DELAY – µs
P
6
0-22 -16
P – INPUT OPTICAL POWER, dBm
R
7
8
tPLH
tPHL
17
Transmitter Electrical/Optical Characteristics 0°C to 70°C unless otherwise specified.
For forward voltage and output power vs. drive current graphs.
Parameter Symbol Min. Typ. Max. Units Conditions Ref.
Transmitter Output PT-11.2 -5.1 dBm IFdc = 60 mA, 25°C Notes 3, 4
Optical Power -13.6 -4.5 IFdc = 60 mA
-35.5 IFdc = 2 mA, 0-70°C Fig. 9, 10
Output Optical Power ∆PT/∆T -0.85 %/°C
Temperature Coefficient
Peak Emission λPK 660 nm
Wavelength
Forward Voltage VF1.45 1.67 2.02 V IFdc = 60 mA
Forward Voltage ∆VF/∆T -1.37 mV/°C Fig. 18
Temperature Coefficient
Effective Diameter D 1 mm
Numerical Aperture NA 0.5
Reverse Input Breakdown VBR 5.0 11.0 V IFdc = 10 µA,
Voltage TA = 25°C
Diode Capacitance CO86 pF VF = 0, f = 1 MHz
Rise Time tr80 ns 10% to 90%, Note 1
Fall Time tf40
Note:
1. Rise and fall times are measured with a voltage pulse driving the transmitter and a series connected 50 Ω load. A wide bandwidth
optical to electrical waveform analyzer, terminated to a 50 Ω input of a wide bandwidth oscilloscope, is used for this response time
measurement.
Pin # Function
1 Anode
2 Cathode
3 Open
4 Open
5 Do not connect
8 Do not connect
Note: Pins 5 and 8 are for mounting and
retaining purposes only. Do not
electrically connect these pins.
HFBR-15X3 Transmitter
All HFBR-15XX LED transmitters are classified as IEC 825-1 Accessible
Emission Limit (AEL) Class 1 based upon the current proposed draft scheduled
to go into effect on January 1, 1997. AEL Class 1 LED devices are considered
eye safe. Contact your Agilent sales representative for more information.
IF = 60 mA
ANODE 1
CATHODE 2
N.C. 3
N.C. 4
8 DO NOT CONNECT
5 DO NOT CONNECT
Absolute Maximum Ratings
Parameter Symbol Min. Max. Units Reference
Storage Temperature TS-40 +75 °C
Operating Temperature T
A0 +70 °C
Lead Soldering Cycle Temp. 260 °C Note 1
Time 10 sec
Forward Input Current IFPK 1000 mA Note 2, 3
IFdc 80
Reverse Input Voltage VBR 5V
Notes:
1. 1.6 mm below seating plane.
2. Recommended operating range between 10 and 750 mA.
3. 1 µs pulse, 20 µs period.
Absolute Maximum Ratings
Parameter Symbol Min. Max. Units Reference
Storage Temperature TS-40 +75 °C
Operating Temperature T
A0 +70 °C
Lead Soldering Cycle Temp. 260 °C Note 1
Time 10 sec
Supply Voltage VCC -0.5 7 V Note 2
Average Output Collector Current IO-1 5 mA
Output Collector Power Dissipation POD 25 mW
Output Voltage VO-0.5 7 V
Notes:
1. 1.6 mm below seating plane.
2. It is essential that a bypass capacitor 0.01 µF be connected from pin 2 to pin 3 of the receiver.
Pin # Function
1V
O
2 Ground
3 Open
4V
CC
5 Do not connect
8 Do not connect
Note: Pins 5 and 8 are for mounting and
retaining purposes only. Do not
electrically connect these pins.
HFBR-25X3 Receiver
Receiver Electrical/Optical Characteristics 0°C to 70°C, 4.5 V ≤VCC ≤5.5 V unless otherwise
specified.
Parameter Symbol Min. Typ. Max. Units Conditions Ref.
Input Optical Power PR(L) -39 -13.7 dBm VO = VOL, IOL = 3.2 mA Notes 1,
Level Logic 0 -39 -13.3 VO = VOL,
IOH = 8 mA, 25°C
Input Optical Power PR(H) -53 dBm VOH = 5.5 V Note 3
Level Logic 1 IOH = ≤40 µA
High Level Output Voltage VOH 2.4 V IO = -40 µA, PR = 0 µW
Low Level Output Voltage VOL 0.4 V IOL = 3.2 mA Note 4
PR = PR(L)MIN
High Level Supply Current ICCH 1.2 1.9 mA VCC = 5.5 V, PR = 0 µW
Low Level Supply Current ICCL 2.9 3.7 mA VCC = 5.5 V, Note 4
PR = PRL (MIN)
Effective Diameter D 1 mm
Numerical Aperture NA 0.5
Notes:
1. Measured at the end of the fiber optic cable with large area detector.
2. Optical flux, P (dBm) = 10 Log P(µW)/1000 µW.
3. Because of the very high sensitivity of the HFBR-25X3, the digital output may switch in response to ambient light levels when a
cable is not occupying the receiver optical port. The designer should take care to filter out signals from this source if they pose a
hazard to the system.
4. Including current in 3.3 k pull-up resistor.
2, 3
4
3
2
1
DO NOT CONNECT 5
DO NOT CONNECT 8
OPEN
V
CC
GROUND
V
O
18
www.semiconductor.agilent.com
Data subject to change.
Copyright © 1999 Agilent Technologies, Inc.
Obsoletes 5965-1657E
5968-1712E (11/99)
