Table 2. Pin Out Table
Pin
Symbol
Mounting Studs
Functional Description
The mounting studs are provided for transceiver mechanical attachment to the circuit board.
They are embedded in the non-conductive plastic housing and are not connected to the
transceiver internal circuit. They should be soldered into plated-through holes on the printed
circuit board.
Receiver Signal Ground
Directly connect this pin to receiver signal ground plane.
Receiver Data Out
Terminate this high-speed, differential, LVPECL output with standard LVPECL techniques at the
follow-on device input pin.
Receiver Data Out Bar
Terminate this high-speed, differential, LVPECL output with standard LVPECL techniques at the
follow-on device input pin.
Signal Detect
Normal input optical levels to the receiver result in a logic "1" output.
Low input optical levels to the receiver result in a fault indication shown by a logic "0" output.
Signal Detect is a single-ended, LVPECL output. This output will operate with 270
W
termination
resistor to V
EE
to achieve LVPECL output levels.
This Signal Detect output can be used to drive a LVPECL input on an upstream circuit, such as,
Signal Detect input and Loss of Signal-bar input.
Receiver Power Supply
Provide +3.3 V dc via the recommended receiver power supply filter circuit.
Locate the power supply filter circuit as close as possible to the V
CCR
pin.
Transmitter Power Supply
Provide +3.3 V dc via the recommended transmitter power supply filter circuit.
Locate the power supply filter circuit as close as possible to the V
CCT
pin.
Transmitter Data In Bar
Terminate this high-speed, differential Transmitter Data input with standard LVPECL techniques at
the transmitter input pin.
Transmitter Data In
Terminate this high-speed, differential Transmitter Data input with standard LVPECL techniques at
the transmitter input pin.
Transmitter Signal Ground
Directly connect this pin to the transmitter signal ground plane.
1
2
V
EER
RD+
3
RD-
4
SD
5
V
CCR
6
V
CCT
7
TD-
8
TD+
9
V
EET
Temperature Range 0°C to +70°C
HFCT-5805B
Black Case
HFCT-5805D
Blue Case
Temperature Range -40°C to +85°C
HFCT-5805A
Black Case
HFCT-5805C
Blue Case
9
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