Hot-pluggable QSFP28 form factor
4 channels full-duplex transceiver module
Supports 103.125Gb/s aggregate bit rate
4 channels 850nm VCSEL array
Operating case temperature range: 0 to 70°C
Description Review
Product Overview
This product is a 100Gb/s transceiver module designed for optical communication applications 
compliant with the QSFP MSA,CWDM4 MSA,100G 4WDM4-10 MSA and portions of IEEE P802.3bm standard. The module converts 4 input channels of 25Gb/s electrical data to 4 channels of CWDM optical signals and then multiplexes them into a single channel for 100Gb/s optical transmission. .Reversely on the receiver side, the module de-multiplexes a 100Gb/s optical input into 4 channels of CWDM optical signals and then converts them to 4 output channels of electrical data.
The central wavelengths of the 4 CWDM channels are 1271, 1291, 1311 and 1331 nm as members of the CWDM wavelength grid defined in CWDM4 MSA and 4WDM4-10 MSA. The high performance Uncooled CWDM DFB transmitters and high sensitivity PIN receivers provide superior performance for 100Gigabit Ethernet applications up to 10km links .
The product is designed with form factor, optical/electrical connection and digital diagnostic interface according to the QSFP+ Multi-Source Agreement (MSA). It has been designed to meet the harshest external operating conditions including temperature, humidity and EMI interference
Product Overview
Pin Logic Symbol Name/Description Ref.
1   GND Module Ground 1
2 CML-I Tx2- Transmitter inverted data input  
3 CML-I Tx2+ Transmitter non-inverted data input  
4   GND Module Ground 1
5 CML-I Tx4- Transmitter inverted data input  
6 CML-I Tx4+ Transmitter non-inverted data input  
7   GND Module Ground 1
8 LVTTL-I MODSEIL Module Select 2
9 LVTTL-I ResetL Module Reset 2
10   VCCRx +3.3v Receiver Power Supply  
11 LVCMOS-I SCL 2-wire Serial interface clock 2
12 LVCMOS-I/O SDA 2-wire Serial interface data 2
13   GND Module Ground 1
14 CML-O RX3+ Receiver non-inverted data output  
15 CML-O RX3- Receiver inverted data output  
16   GND Module Ground 1
17 CML-O RX1+ Receiver non-inverted data output  
18 CML-O RX1- Receiver inverted data output  
19   GND Module Ground 1
20   GND Module Ground 1
21 CML-O RX2- Receiver inverted data output  
22 CML-O RX2+ Receiver non-inverted data output  
23   GND Module Ground 1
24 CML-O RX4- Receiver inverted data output  
25 CML-O RX4+ Receiver non-inverted data output  
26   GND Module Ground 1
27 LVTTL-O ModPrsL Module Present, internal pulled down to GND  
28 LVTTL-O IntL Interrupt output, should be pulled up on host board 2
29   VCCTx +3.3v Transmitter Power Supply  
30   VCC1 +3.3v Power Supply  
31 LVTTL-I LPMode Low Power Mode 2
32   GND Module Ground 1
33 CML-I Tx3+ Transmitter non-inverted data input  
34 CML-I Tx3- Transmitter inverted data input  
35   GND Module Ground 1
36 CML-I Tx1+ Transmitter non-inverted data input  
37 CML-I Tx1- Transmitter inverted data input  
38   GND Module Ground 1
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:      

Product Description Part Number
SFP-QSFP28 SR4, 103.125Gb/s, 850nm, 100m, MMF, MTP/MPO SFP-GQS-MPO101-SR4C
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