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HFCT-5964ATG Datasheet(PDF) 7 Page - Agilent(Hewlett-Packard) |
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HFCT-5964ATG Datasheet(HTML) 7 Page - Agilent(Hewlett-Packard) |
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7 / 17 page  6 Pin Descriptions: Pin 1 Photo Detector Bias, VpdR: This pin enables monitoring of photo detector bias current. It must be connected directly to VCCRX, or to VCCRX through a resistor (Max. 200 Ω) for monitoring photo detector bias current. Pins 2, 3, 6 Receiver Signal Ground VEE RX: Directly connect these pins to the receiver ground plane. Pins 4, 5 DO NOT CONNECT Pin 7 Receiver Power Supply VCC RX: 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 VCC RX pin. Note: the filter circuit should not cause VCC to drop below minimum specification. Pin 8 Signal Detect SD: Normal optical input levels to the receiver result in a logic “1” output. Low optical input levels to the receiver result in a logic “0” output. This Signal Detect output can be used to drive a +3.3 V TTL input on an upstream circuit, such as Signal Detect input or Loss of Signal-bar. Pin 9 Receiver Data Out Bar RD-: No internal terminations are provided. See recommended circuit schematic. Pin 10 Receiver Data Out RD+: No internal terminations are provided. See recommended circuit schematic. Pin 11 Transmitter Power Supply VCC TX: 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 VCC TX pin. Pins 12, 16 Transmitter Signal Ground VEE TX: Directly connect these pins to the transmitter signal ground plane. Pin 13 Transmitter Disable TDIS: Optional feature, connect this pin to +3.3 V TTL logic high “1” to disable module. To enable module connect to TTL logic low “0”. Pin 14 Transmitter Data In TD+: No internal terminations are provided. See recommended circuit schematic. Pin 15 Transmitter Data In Bar TD-: No internal terminations are provided. See recommended circuit schematic. Pin 17 Laser Diode Bias Current Monitor - Negative End BMON– The laser diode bias current is accessible by measuring the voltage developed across pins 17 and 18. Dividing the voltage by 10 Ohms (internal) will yield the value of the laser bias current. Pin 18 Laser Diode Bias Current Monitor - Positive End BMON+ See pin 17 description. Pin 19 Laser Diode Optical Power Monitor - Negative End PMON– The back facet diode monitor current is accessible by measuring the voltage developed across pins 19 and 20. The voltage across a 200 Ohm resistor between pins 19 and 20 will be proportional to the photo current. Pin 20 Laser Diode Optical Power Monitor - Positive End PMON+ See pin 19 description. Mounting Studs/Solder Posts The two mounting studs are provided for transceiver mechanical attachment to the circuit board. It is recommended that the holes in the circuit board be connected to chassis ground. Package Grounding Tabs Connect four package grounding tabs to signal ground. Connection Diagram Figure 5. Pin Out Diagram (Top View) LASER DIODE OPTICAL POWER MONITOR - POSITIVE END LASER DIODE OPTICAL POWER MONITOR - NEGATIVE END LASER DIODE BIAS CURRENT MONITOR - POSITIVE END LASER DIODE BIAS CURRENT MONITOR - NEGATIVE END TRANSMITTER SIGNAL GROUND TRANSMITTER DATA IN BAR TRANSMITTER DATA IN TRANSMITTER DISABLE TRANSMITTER SIGNAL GROUND TRANSMITTER POWER SUPPLY RX TX o o o o o o o o o o 1 2 3 4 5 6 7 8 9 10 o o o o o o o o o o 20 19 18 17 16 15 14 13 12 11 PHOTO DETECTOR BIAS RECEIVER SIGNAL GROUND RECEIVER SIGNAL GROUND NOT CONNECTED NOT CONNECTED RECEIVER SIGNAL GROUND RECEIVER POWER SUPPLY SIGNAL DETECT RECEIVER DATA OUTPUT BAR RECEIVER DATA OUTPUT Top View Mounting Studs/ Solder Posts Package Grounding Tabs |
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Similar Description - HFCT-5964ATG |
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