Supports 39.8 Gb/s to 44.6 Gb/s
18.5 dB link insertion loss budget
Single 3.3V power supply
Uncooled 4x10Gb/s CWDM  transmitter
Operating case temperature range: 0 to 70°C
Description Review
Product Overview
LYCOM’s 40GE QSFP+ ER4 40km Optical Transceiver modules are designed for using in 40 Gigabit Ethernet and 4X10G OTN client interfaces over single mode fiber. They are compliant with the QSFP+ MSA, IEEE 802.3bm 40GBASE-ER4, and OTU3 requirements. The LYCOM technology enables the integration of 4 transmitters, 4 receivers and an optical MUX/DeMUX into a small form factor packag.

Product Overview

Hot-pluggable QSFP  form factor
Supports 39.8 Gb/s to 44.6 Gb/s 
18.5 dB link insertion loss budget
Single 3.3V power supply
Maximum link length of 40km on Single Mode Fiber (SMF)
Uncooled 4x10Gb/s CWDM  transmitter
XLPPI electrical interface
Duplex LC receptacles
Operating case temperature range: 0 to 70°C
3.5W maximum power dissipation
RoHS-6 compliant (lead free)

Pin Descriptions       
Pin Logic Symbol Name/Description
1   GND Module Ground1
2 CML-I Tx2- Transmitter inverted data input
3 CML-I Tx2+ Transmitter non-inverted data input
4   GND Module Ground1
5 CML-I Tx4- Transmitter inverted data input
6 CML-I Tx4+ Transmitter non-inverted data input
7   GND Module Ground1
8 LVTTL-I MODSEIL Module Select2
9 LVTTL-I ResetL Module Reset2
10   VCCRx +3.3V Receiver Power Supply
11 LVCMOS-I SCL 2-wire Serial interface clock2
12 LVCMOS-I/O SDA 2-wire Serial interface data2
13   GND Module Ground1
14 CML-O RX3+ Receiver non-inverted data output
15 CML-O RX3- Receiver inverted data output
16   GND Module Ground1
17 CML-O RX1+ Receiver non-inverted data output
18 CML-O RX1- Receiver inverted data output
19   GND Module Ground1
20   GND Module Ground1
21 CML-O RX2- Receiver inverted data output
22 CML-O RX2+ Receiver non-inverted data output
23   GND Module Ground1
24 CML-O RX4- Receiver inverted data output
25 CML-O RX4+ Receiver non-inverted data output
26   GND Module Ground1
27 LVTTL-O ModPrsL Module Present, internal pulled down to GND
28 LVTTL-O IntL Interrupt output, should be pulled up on host board2
29   VCCTx +3.3V Transmitter Power Supply
30   VCC1 +3.3V Power Supply
31 LVTTL-I LPMode Low Power Mode2
32   GND Module Ground1
33 CML-I Tx3+ Transmitter non-inverted data input
34 CML-I Tx3- Transmitter inverted data input
35   GND Module Ground1
36 CML-I Tx1+ Transmitter non-inverted data input
37 CML-I Tx1- Transmitter inverted data input
38   GND Module Ground1
1. Module circuit ground is isolated from module chassis ground within the module.
2. Open collector should be pulled up with 4.7K to 10K ohms on host board to a voltage between 3.15V and 3.6V.


Ordering Information:     

Part Number Product Description
SFP-GQS-SPO400-ER4C 40GE/OTU3 QSFP ER4, 40km on single-mode fiber
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