Data Sheet
January 2000
NetLight
®
1417G5 and 1417H5-Type
ATM/SONET/SDH Transceivers with Clock Recovery
s
s
Transmitter disable input
Wide dynamic range receiver with InGaAs PIN
photodetector
LVTTL signal-detect output
Low power dissipation
Raised ECL (PECL) logic data and clock interfaces
Operating case temperature range: –40
°C
to
+85
°C
Agere Systems Inc. Reliability and Qualification
Program for built-in quality and reliability
s
s
s
s
s
Available in a small form factor, RJ-45 size, plastic package,
the 1417G5 and 1417H5-Type are high-performance, cost-
effective transceivers for ATM/SONET/SDH applications at
155 Mbits/s and 622 Mbits/s.
Description
The 1417G5 and 1417H5 transceivers are high-
speed, cost-effective optical transceivers that are
compliant with the International Telecommunication
Union Telecommunication (ITU-T) G.957 specifica-
tions for use in ATM, SONET, and SDH applications.
The 1417G5 operates at the OC-3/STM-1 rate of
155 Mbits/s, and the 1417H5 operates at the OC-12/
STM-4 rate of 622 Mbits/s. The transceiver features
Agere Systems high-reliability optics and is pack-
aged in a narrow-width plastic housing with an LC
duplex receptacle. This receptacle fits into an RJ-45
form factor outline. The 20-pin package and pinout
conform to a multisource transceiver agreement.
The transmitter features differential PECL logic level
data inputs and a LVTTL logic level disable input. The
receiver features differential PECL logic level data
and clock outputs and a LVTTL logic level signal-
detect output.
Features
s
SONET/SDH Compliant (ITU-T G.957 Specifica-
tions)
— IR-1/S1.1, S4.1
Small form factor, RJ-45 size, multisourced 20-pin
package
Requires single 3.3 V power supply
Clock recovery
LC duplex receptacle
Analog alarm outputs
Uncooled 1300 nm laser transmitter with automatic
output power control
s
s
s
s
s
s
NetLight
1417G5 and 1417H5-Type
ATM/SONET/SDH Transceivers with Clock Recovery
Data Sheet
January 2000
Absolute Maximum Ratings
Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are abso-
lute stress ratings only. Functional operation of the device is not implied at these or any other conditions in excess
of those given in the operations sections of the data sheet. Exposure to absolute maximum ratings for extended
periods can adversely affect device reliability.
Parameter
Supply Voltage
Operating Case Temperature Range
Storage Case Temperature Range
Lead Soldering Temperature/Time
Operating Wavelength Range
Symbol
V
CC
T
C
T
stg
—
λ
Min
0
–40
–40
—
1.1
Max
3.6
85
85
250/10
1.6
Unit
V
°C
°C
°C/s
nm
Pin Information
TX
20 19 18 17 16 15 14 13 12 11
20-PIN MODULE - TOP VIEW
RX
1 2 3 4 5 6 7 8 9 10
1-967(F).b
Figure 1. 1417G5 and 1714H5 Transceivers, 20-Pin Configuration, Top View
Table 1. Transceiver Pin Descriptions
Pin
Number
MS
Symbol
Name/Description
Receiver
Mounting Studs.
The mounting studs are provided for transceiver mechani-
cal attachment to the circuit board. They may also provide an optional con-
nection of the transceiver to the equipment chassis ground.
Photodetector Bias.
This lead supplies bias for the PIN photodetector diode.
Logic
Family
NA
MS
1
2
3
4
5
6
7
8
9
10
2
Photode-
tector Bias
Receiver Signal Ground.
V
EER
Receiver Signal Ground.
V
EER
Received Recovered Clock Out.
The rising edge occurs at the rising edge of
CLK–
the received data output. The falling edge occurs in the middle of the received
data bit period.
Received Recovered Clock Out.
The falling edge occurs at the rising edge
CLK+
of the received data output. The rising edge occurs in the middle of the
received data bit period.
Receiver Signal Ground.
V
EER
Receiver Power Supply.
V
CCR
Signal Detect.
SD
Normal operation: logic one output.
Fault condition: logic zero output.
Received DATA Out.
No internal terminations will be provided.
RD–
Received DATA Out.
No internal terminations will be provided.
RD+
NA
NA
NA
PECL
PECL
NA
NA
LVTTL
PECL
PECL
Agere Systems Inc.
Data Sheet
January 2000
NetLight
1417G5 and 1417H5-Type
ATM/SONET/SDH Transceivers with Clock Recovery
Pin Information
(continued)
Table 1. Transceiver Pin Descriptions
(continued)
Pin
Number
11
12
13
14
15
16
17
Logic
Family
NA
NA
LVTTL
PECL
PECL
NA
NA
Symbol
Name/Description
Transmitter
Transmitter Power Supply.
Transmitter Signal Ground.
Transmitter Disable.
Transmitter Data In.
Transmitter Data In Bar.
Transmitter Signal Ground.
Laser Diode Bias Current Monitor—Negative End.
The laser bias current
is accessible as a dc-voltage by measuring the voltage developed across pins
17 and 18.
Laser Diode Bias Current Monitor—Positive End.
See pin 17 description.
Laser Diode Optical Power Monitor—Negative End.
The back-facet diode
monitor current is accessible as a dc-voltage by measuring the voltage devel-
oped across pins 19 and 20.
Laser Diode Optical Power Monitor—Positive End.
See pin 19 description.
V
CCT
V
EET
T
DIS
TD+
TD–
V
EET
B
MON
(–)
18
19
B
MON
(+)
P
MON
(–)
NA
NA
20
P
MON
(+)
NA
Electrostatic Discharge
Caution: This device is susceptible to damage as
a result of electrostatic discharge (ESD).
Take proper precautions during both
handling and testing. Follow
EIA
®
stan-
dard
EIA-625.
Although protection circuitry is designed into the
device, take proper precautions to avoid exposure to
ESD. Agere Systems employs a human-body model
(HBM) for ESD-susceptibility testing and protection-
design evaluation. ESD voltage thresholds are depen-
dent on the critical parameters used to define the
model. A standard HBM (resistance = 1.5 kΩ, capaci-
tance = 100 pF) is widely used and, therefore, can be
used for comparison purposes. The HBM ESD thresh-
old established for the 1417G5 and 1417H5 transceiv-
ers is
±1000
V.
Printed-Wiring Board Layout Considerations
A fiber-optic receiver employs a very high-gain, wide-
bandwidth transimpedance amplifier. This amplifier
detects and amplifies signals that are only tens of nA in
amplitude when the receiver is operating near its sensi-
tivity limit. Any unwanted signal currents that couple
into the receiver circuitry cause a decrease in the
receiver's sensitivity and can also degrade the perfor-
mance of the receiver's signal detect (SD) circuit. To
minimize the coupling of unwanted noise into the
receiver, careful attention must be given to the printed-
wiring board.
At a minimum, a double-sided printed-wiring board
(PWB) with a large component-side ground plane
beneath the transceiver must be used. In applications
that include many other high-speed devices, a multi-
layer PWB is highly recommended. This permits the
placement of power and ground on separate layers,
which allows them to be isolated from the signal lines.
Multilayer construction also permits the routing of sen-
sitive signal traces away from high-level, high-speed
signal lines. To minimize the possibility of coupling
noise into the receiver section, high-level, high-speed
signals such as transmitter inputs and clock lines
should be routed as far away as possible from the
receiver pins.
Application Information
The 1417 receiver section is a highly sensitive fiber-
optic receiver. Although the data outputs are digital
logic levels (PECL), the device should be thought of as
an analog component. When laying out system appli-
cation boards, the 1417 transceiver should receive the
same type of consideration one would give to a sensi-
tive analog component.
Agere Systems Inc.
3
NetLight
1417G5 and 1417H5-Type
ATM/SONET/SDH Transceivers with Clock Recovery
Data Sheet
January 2000
Application Information
(continued)
Noise that couples into the receiver through the power
supply pins can also degrade performance. It is recom-
mended that the pi filter, shown in Figure 2, be used for
both the transmitter and receiver power supplies.
decipher the proper logic levels and can cause transi-
tions to occur where none were intended. Also, by min-
imizing high-frequency ringing, possible EMI problems
can be avoided.
The signal-detect output is LVTTL logic. A logic low at
this output indicates that the optical signal into the
receiver has been interrupted or that the light level has
fallen below the minimum signal detect threshold. This
output should not be used as an error rate indicator,
since its switching threshold is determined only by the
magnitude of the incoming optical signal.
Data Clock and Signal Detect Outputs
The data clock and signal detect outputs of the 1417
transceiver are driven by open-emitter NPN transistors,
which have an output impedance of approximately 7
Ω.
Each output can provide approximately 50 mA maxi-
mum current to a 50
Ω
load terminated to V
CC
– 2.0 V.
Due to the high switching speeds of ECL outputs,
transmission line design must be used to interconnect
components. To ensure optimum signal fidelity, both
data outputs (RD+/RD–) and clock outputs (CLK+/
CLK–) should be terminated identically. The signal
lines connecting the data and clock outputs to the next
device should be equal in length and have matched
impedances. Controlled impedance stripline or micros-
trip construction must be used to preserve the quality
of the signal into the next component and to minimize
reflections back into the receiver, which could degrade
its performance. Excessive ringing due to reflections
caused by improperly terminated signal lines makes it
difficult for the component receiving these signals to
Transceiver Processing
When the process plug is placed in the transceiver's
optical port, the transceiver and plug can withstand
normal wave soldering and aqueous spray cleaning
processes. However, the transceiver is not hermetic,
and should not be subjected to immersion in cleaning
solvents. The transceiver case should not be exposed
to temperatures in excess of 125
°C.
The transceiver
pins can be wave soldered at 250
°C
for up to 10 sec-
onds. The process plug should only be used once.
After removing the process plug from the transceiver, it
must not be used again as a process plug; however, if it
has not been contaminated, it can be reused as a dust
cover.
Transceiver Optical and Electrical Characteristics
Table 2. Transmitter Optical and Electrical Characteristics
(T
C
= –40
°C
to +85
°C;
V
CC
= 3.135 V to 3.465 V)
Parameter
Average Optical Output Power (EOL)
Optical Wavelength:
STM-1 (4 nm spectral width, maximum)
STM-4 (2.5 nm spectral width, maximum)
Dynamic Extinction Ratio
Power Supply Current
Input Data Voltage:
Low
High
Transmit Disable Voltage
Transmit Enable Voltage
Laser Bias Voltage
Laser Back-facet Monitor Voltage
Symbol
P
O
λ
C
1261
1274
EXT
I
CCT
V
IL
V
IH
V
D
V
EN
V
BIAS
V
BF
8.2
—
V
CC
– 1.81
V
CC
– 1.025
V
CC
– 1.3
V
EE
0
0.01
1360
1356
—
150
V
CC
– 1.62
V
CC
– 0.88
V
CC
V
EE
+ 0.8
0.70
0.20
nm
nm
dB
mA
V
V
V
V
V
V
Min
–15.0
Max
–8.0
Unit
dBm
4
Agere Systems Inc.
Data Sheet
January 2000
NetLight
1417G5 and 1417H5-Type
ATM/SONET/SDH Transceivers with Clock Recovery
Transceiver Optical and Electrical Characteristics
(continued)
Table 3. Receiver Optical and Electrical Characteristics
(T
C
= –40
°C
to +85
°C;
V
CC
= 3.135 V to 3.465 V)
Parameter
Average Sensitivity (STM-1/STM-4)*
Maximum Input Power*
Link Status Switching Threshold:
Decreasing Light (STM-1/STM-4)
Increasing Light (STM-1/STM-4)
Link Status Hysteresis
Power Supply Current
Output Data Voltage/Clock Voltage:
Low
High
Output Data/Clock Rise and Fall Times
†
Signal Detect Output Voltage:
Low
High
Clock Duty Cycle
Output Clock Random Jitter
Output Clock Random Jitter Peaking
Clock/Data Alignment: (See Figure 2.)
STM-1
STM-4
Jitter Tolerance/Jitter Transfer
* For 1 x 10
–10
BER with an optical input using 2
23
– 1 PRBS.
† Typical rise and fall time is 360 ps.
Symbol
P
I
P
MAX
LST
D
LST
I
HYS
I
CCR
V
OL
V
OH
t
R
/t
F
V
OL
V
OH
DC
J
C
J
P
TCDA
Min
—
–8
–45
–45
0.5
—
V
CC
– 1.81
V
CC
– 1.025
300
0.0
2.4
45
—
—
–800
–200
Max
–28
—
–29.0
–28.5
—
200
V
CC
– 1.62
V
CC
– 0.88
500
0.8
V
CC
55
0.01
0.1
800
200
Unit
dBm
dBm
dBm
dBm
dB
mA
V
V
ps
V
V
%
UI
dB
ns
ns
Telcordia Technologies
®
GR-253-Core and
ITU-TG.958 Compliant
DATA
OUT
50%
CLOCK
OUT
50%
T
CDA
1-725(F).b
Figure 2. Clock/Data Alignment
Agere Systems Inc.
5
京公网安备 11010802033920号
EEWORLD
