PLRXPL-VC-SH4-21-N
Accelar™ RoHS-Compliant 8.5 Gbps
850 nm eSFP Limiting Transceiver
Picolight Components set the standard for performance and quality
This lead-free and RoHS-compliant Small Form Factor Pluggable (SFP)
transceiver provides superior performance for applications at 8.5Gbps data
high speed, short reach SAN, and intra-POP applications. The transceiver is
intended to be fully compliant with 8G Fibre Channel Specifications as well
as the SFP+ MSA. The 8G Fibre Channel specification, FC-PI-4, and the SFP+
MSA, SFF-8431, have not been completed yet and therefore this data sheet
will be revised as necessary to maintain consistency with those specifications.
Picolight’s improved housing provides superior EMI performance for demanding
8.5Gbps applications. This transceiver features a highly reliable 850nm oxide
vertical-cavity surface-emitting laser (VCSEL) coupled to a LC optical connector.
Its small size allows for high-density board designs that, in turn, enable greater
total aggregate bandwidth.
PLRXPL-VC-SH4-21-N
K
EY
B
ENEFITS
HIGHLIGHTS
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8.5Gbps performance for use at 8G Fibre channel data rates
Lead-Free and RoHS-Compliant
Enhanced Digital Diagnostic
feature set allows real-time monitoring
of transceiver performance and system stability.
Bail mechanism
enables superior ergonomics and functionality in all
port configurations
Serial ID
allows customer and vendor system specific information to be
placed in transceiver
All-metal housing
provides superior EMI performance
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Compliant with industry-wide physical
specifications
Lead-free and RoHS-Compliant
Superior EMI peformance
Cost effective SFP solution
Enables higher port densities
Enables greater bandwidth
Proven high reliability
A
PPLICATIONS
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High-speed storage area networks
• Switch and hub interconnect
• Mass storage systems interconnect
• Host adapter interconnect
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Computer cluster cross-connect
Custom high-speed data pipes
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rates, and is another in Picolight’s family of Accelar products customized for
February 2007
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PRELIMINARY
RoHS-Compliant 8.5 Gbps
850nm Transceivers
850nm
PLRXPL-VC-SH4-21-N F
EATURES
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Utilizes a highly reliable, high-speed, 850nm, oxide VCSEL
Lead-free and RoHS-compliant
All-metal housing for superior EMI performance
Hot Pluggable
Digital Diagnostics; SFF-8472 rev 9.5 compliant
Intended to be compliant with 8G Fibre Channel specifications
Compliant with 4G and 2G Fibre channel
Compatible with 1G Fibre Channel
Low nominal power consumption (400 mW)
0˚C to 70˚C operating temperature range
Single +3.3 V power supply
Bit error rate < 1 x 10
-12
OC Transmit disable, loss of signal and transmitter
fault functions
CDRH and IEC 60825-1 Class 1 laser eye safe
FCC Class B compliant
ESD Class 2 per MIL-STD 883 Method 3015
UL-94 V-0 certified
Internal AC coupling on both transmit and receive data signals
An eye-safe, cost effective serial transceiver, the PLRXPL-VC-SH4-21-N
features a small, low power, pluggable package that manufacturers
can upgrade in the field, adding bandwidth incrementally. The robust
mechanical design features a unique all-metal housing that provides
superior EMI shielding.
ORDERING INFORMATION
Part Number
PLRXPL-VC-SH4-21-N
Temp. Range:
0 to 70˚C
Power Supply
Tolerance:
±10%
Rate
Select
Digital
Diagnostics
X
Contact Information:
Picolight Incorporated
1480 Arthur Avenue
Louisville, CO 80027 USA
Tel: 303.530.3189 Fax: 303.527.4961
Email: sales@picolight.com
Web site: www.picolight.com
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RoHS-Compliant 8.5 Gbps
850nm Transceivers
850nm
SECTION 1 FUNCTIONAL DESCRIPTION
The PLRXPL-VC-SH4-21-N 850 nm VCSEL Gigabit Transceiver is designed to transmit and receive 8B/10B encoded serial
optical data over 50/125 μm or 62.5/125 μm multimode optical fiber.
T
RANSMITTER
The transmitter converts 8B/10B encoded serial PECL or CML electrical data into serial optical data compliant with
the 8G Fibre Channel specification. Transmit data lines (TD+ & TD-) are internally AC coupled with 100 Ω differential
termination.
An open collector compatible Transmit Disable (Tx_Dis) is provided. This pin is internally terminated with a 10 kΩ
”
resistor to Vcc
T
. A logic “1, or no connection on this pin will disable the laser from transmitting. A logic “0” on this
pin provides normal operation.
Rate Select_1 (RS1), pin 9, is defined as the TX Rate select pin in SFF-8431 and is connected internally to a 30kΩ pull-
down resistor. A data signal on this pin has no affect on the operation of the transmitter.
An open collector compatible Transmit Fault (TFault) is provided. The Transmit Fault signal must be pulled high on the
host board for proper operation. A logic “1” output from this pin indicates that a transmitter fault has occurred, or the
part is not fully seated and the transmitter is disabled. A logic “0” on this pin indicates normal operation.
R
ECEIVER
The receiver converts 8B/10B encoded serial optical data into serial PECL/CML electrical data. Receive data lines (RD+
& RD-) are internally AC coupled with 100Ω differential source impedance, and must be terminated with a 100Ω dif-
ferential load.
Rate Select_0 (RS0), pin 7, is defined as the RX Rate select pin in SFF-8431 and is connected internally to a 30kΩ pull-
down resistor. A data signal on this pin has no affect on the operation of the receiver.
An open collector compatible Loss of Signal is provided. The LOS must be pulled high on the host board for proper
operation. A logic “0” indicates that light has been detected at the input to the receiver (see Section 2.5 Optical
characteristics, Loss of Signal Assert/Deassert Time on page 10). A logic “1” output indicates that insufficient light has
been detected for proper operation.
Power supply filtering is recommended for both the transmitter and receiver. Filtering should be placed on the host
assembly as close to the Vcc pins as possible for optimal performance.
Recommended “Application Schematics” are shown in Figure 2 on page 6.
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RoHS-Compliant 8.5 Gbps
850nm Transceivers
850nm
10 kΩ
16 Transmitter
Power Supply
3 Transmitter
Disable In
Figure 1
Block Diagram
VCC_TX TX_DIS
TD+
18 Transmitter
Positive Data
TOSA
Laser Driver
TX_GND
TX_FAULT
TD -
100
Ω
19 Transmitter
Negative Data
2 Transmitter
Fault Out
1, 17, 20 Transmitter
Signal Ground
SCL
Management Processor
EEPROM
SDA
5 SCL
Serial ID Clock
4 SDA
Serial ID Data
6 MOD_ABS
15 Receiver
Power Supply
VCC_RX
VCC_RX
RD -
50
Ω
ROSA
RX_GND
Receiver
RD +
RX_GND
LOS
50
Ω
12 Receiver
Negative Data Out
13 Receiver
Positive Data Out
8 Loss of Signal Out
9 AS1 TX Rate Select
Not Functional on
-N modules
7 AS0 RX Rate Select
Not Functional on
-N modules
10, 11, 14 Receiver
Signal Ground
30 kΩ
30 kΩ
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RoHS-Compliant 8.5 Gbps
850nm Transceivers
850nm
SECTION 2 TECHNICAL DATA
Technical data related to Picolight RoHS-Compliant 8.5Gbps 850nm eSFP Transceivers includes:
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Section 2.1 Application Schematics on page 6
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Section 2.2 Pin Function Definitions on page 7 and 8
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Section 2.3 Absolute Maximum Ratings on page 9
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Section 2.4 Electrical Characteristics on page 9
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Section 2.5 Optical Characteristic on page 10
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Section 2.6 Link Length on page 11
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Section 2.7 Regulatory Compliance on page 12
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Section 2.8 Front Panel Opening on page 13
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Section 2.9 Module Outline on page 13
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Section 2.10 Transceiver Belly-to-Belly Mounting on page 14
2.1 A
PPLICATION
S
CHEMATICS
Recommended connections to the PLRXPL-VC-SH4-21-N transceiver are shown in Figure 2 on page 6.
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