23
HFBR-24X2 Low-Cost
5 MBd Receiver
Description
Housed Product
designed for direct interfacing to
popular logic families. The
absence of an internal pull-up
resistor allows the open-collector
output to be used with logic
The HFBR-24X2 fiber optic
receiver is designed to operate
with the Hewlett-Packard HFBR-
14XX fiber optic transmitter and
50/125 µm, 62.5/125 µm, 100/
families such as CMOS requiring
voltage excursions much higher
than V .
CC
®
140 µm, and 200 µm HCS fiber
Both the open-collector “Data”
optic cable. Consistent coupling
into the receiver is assured by the
lensed optical system (Figure 1).
Response does not vary with fiber
size ≤ 0.100 µm.
output Pin 6 and V Pin 2 are
CC
referenced to “Com” Pin 3, 7. The
“Data” output allows busing,
strobing and wired “OR” circuit
configurations. The transmitter is
designed to operate from a single
+5 V supply. It is essential that a
bypass capacitor (0.1 µF
The HFBR-24X2 receiver incor-
porates an integrated photo IC
containing a photodetector and
dc amplifier driving an open-
collector Schottky output
ceramic) be connected from
Pin 2 (V ) to Pin 3 (circuit
CC
common) of the receiver.
transistor. The HFBR-24X2 is
Unhoused Product
PIN FUNCTION
1
2
3
4
V
(5 V)
CC
COMMON
DATA
COMMON
Absolute Maximum Ratings
Parameter
Storage Temperature
Operating Temperature
Symbol
Min.
-55
-40
Max.
+85
+85
+260
10
7.0
25
18.0
40
5
Units
°C
°C
°C
sec
V
mA
V
mW
Reference
T
S
T
A
Lead Soldering Cycle
Temp.
Time
Note 1
Supply Voltage
Output Current
Output Voltage
Output Collector Power Dissipation
Fan Out (TTL)
V
-0.5
-0.5
CC
I
O
V
O
P
O AV
N
Note 2