HFBR-4663 Просмотр технического описания (PDF) - HP => Agilent Technologies
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HFBR-4663 Datasheet PDF : 15 Pages
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Pin Description (cont.)
Pin Name
Function
1 5 XMT
Indicates that transmission is taking place. Active low LED driver, open
collector. Event is extended with internal timer for visibility.
1 6 RCV
Indicates that the transceiver is receiving a frame from the optical input. Active
low LED driver, open collector. Event is extended with internal timer for
visibility.
17 VCCTx
18 TxOUT
+5 V supply for fiber optic LED driver.
Fiber optic LED driver output.
19 GND
Ground Reference.
20 GND
Ground Reference.
21 VDC
22 VREF
23 VTHADJ
24 AGND
An external capacitor on this pin integrates an error signal which nulls the
offset of the input amplifier. If the DC feedback loop is not being used, this pin
should be connected to VREF.
A 2.5 V reference with respect to GND.
This input pin sets the link monitor threshold.
Analog Filtered Ground.
25 VIN-
26 VIN+
27 AVCC
28 JAB
This input pin should be capacitively coupled to the input source or to filtered
AVCC. (The input resistance is approximately 1.3 kΩ.)
This input pin should be capacitively coupled to the input source or to filtered
AVCC. (The input resistance is approximately 1.3 kΩ.)
Analog Filtered +5 V.
Jabber network status LED. When in the jabber state, this pin will be low and
the transmitter will be disabled. In the jabber “OK” state this pin will be high.
Active low LED, open collector.
Absolute Maximum Ratings[1]
Parameter
Storage Temperature
Operating Temperature
Lead Soldering Cycle
Temperature
Lead Soldering Cycle Time
Power Supply Voltage Range
Input Voltage Range
Input Current
Output Current
Symbol
TS
TA
VCC
Digital Inputs (SQEN, LBDIS)
Tx+, Tx-, VIN+, VIN-
RRSET, RTSET, JAB, CLSN,
XMT, RCV, LMON
TxOUT
Min.
-65
0
Max.
+150
70
260
Units
C
C
C
10
sec
-0.3 6.0
V
-0.3
6.0
V
-0.3 6.0
V
60
mA
70
mA
80
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