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STX Datasheet(PDF) 6 Page - OPLINK Communications Inc.

Part No. STX
Description  SONET/SDH Transmitters & Receivers
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Maker  OPLINK [OPLINK Communications Inc.]
Homepage  http://www.oplink.com
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6
21737-0400, Rev. O
2-7-2002
Transmitter Electrical Interface
Receiver Electrical Interface
Transmitter: When the DATA+ input is at logic HIGH
and DATA- input is at logic LOW, the LD is ON; and vice
versa. In single-ended applications, the unused input pin
should be biased to V
CC - 1.29 V. The transmitter is normally
enabled (i.e. when the DISABLE control input is not
connected). When the DISABLE control input voltage is
higher than V
CC - 2 V, the laser is disabled (less than -30dBm
output power) independent of the input data.
Receiver: Both differential DATA+ and DATA- outputs
are PECL/ECL levels requiring termination (50 ohms to
V
CC - 2 volts or 510 ohms to VEE is recommended). For
optimum performance, both outputs should be terminated
in the same manner, even if only one is used.
STX / SRX
Application Notes
Pin Assignments (Top View)
The Signal Detect circuit monitors the level of the incoming
optical signal and generates a logic LOW signal when
insufficient photocurrent is produced. The SIGNAL
DETECT outputs are PECL/ECL level requiring
termination (510 ohms to V
EE is recommended). If TTL
interfaces for SIGNAL DETECT outputs are required, the
SRX-12-L receivers can be used.
Laser Safety: All transmitters are Class I Laser products
per FDA/CDRH and IEC-825 standards. They must be
operated under specified operating conditions.
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
CASE
BIAS MONITOR +
N/C
V
V
TRANSMIT DISABLE
N/C
EE
CC
BIAS MONITOR -
V
V
CC
CC
CASE
FACET MONITOR +
FACET
DATA+
DATA -
N/C
V
MONITOR -
V
CASE
V
CC
EE
CC
Transmitter
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
CASE
N/C
N/C
N/C
N/C
V
DATA+
EE
V
DATA -
V
EE
PD
CASE
N/C
N/C
N/C
N/C
SIGNAL DETECT -
CASE
SIGNAL DETECT+
VCC
VEE
Receiver
N/C: No internal
connection
Parameter
Symbol
Minimum
Typical
Maximum
Units
Supply Voltage 1
VCC - VEE
4.75
5.0
5.5
V
Supply Current
receptacled-DFB
I
-90
150
mA
all others
-
70
130
Input HIGH Voltage
VIH
VCC - 1.165
-
VCC - 0.880
V
Input LOW Voltage
VIL
VCC - 1.810
-
VCC - 1.475
V
Transmitter Disable Voltage
VDIS
VCC - 2.0
-
VCC
V
Transmitter Enable Voltage
VEN
VEE
-
VEE + 0.8
V
Differential Bias Monitor
Voltage
at 25Ā°C
VBM,DIF
-
80
120
mV
at 85Ā°C
-
280
500
Differential Back Facet Monitor Voltage
VFM,DIF
20
100
200
mV
1 For - 5V single supply, connect V
CC to 0V (circuit ground) and VEE to - 5V.
For +5V single supply, connect VCC to +5V and VEE to 0V (circuit ground).
CASE is always connected to circuit ground.
Parameter
Symbol
Minimum
Typical
Maximum
Units
Supply Voltage 1
VCC - VEE
4.75
5.0
5.5
V
VPD
- 10.0
- 5.0
- 2.0
V
Supply Current
I
-85
120
mA
Output HIGH Voltage
VOH
VCC - 1.06
-
VCC - 0.85
V
Output LOW Voltage
VOL
VCC - 1.86
-
VCC - 1.59
V
1 For +5V & - 5V dual supply: V
CC = +5V, VEE = CASE = 0V (circuit ground) and VPD = - 5V.
For +5V single supply
: VCC = +5V and VEE = VPD = CASE = 0V (circuit ground).
For - 5V single supply
: VCC = CASE = 0V (circuit ground) and VEE = VPD = - 5V.
CASE is always connected to circuit ground.
Optical Communication Products, Inc.
DATE OF MANUFACTURE:
MANUFACTURED IN THE USA
This product complies with
21 CFR 1040.10 and 1040.11
Meets Class I Laser Safety Requirements




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