Product Features:
l Supports 212.5Gb/s aggregate bit rate;
l 4x26.5625GBd(PAM4)electrical interface;
l VCSEL Transmitter;
l PIN and TIA array on the receiver side;
l Maximum link length of 100m on;
l OM4 Multimode Fiber (MMF);
l Hot-pluggable QSFP56 footprint;
l Single MPO 12 receptacle;
l Low power Consumption;
l RoHS-6 compliant and lead-free;
l +3.3V single power supply;
l Support Digital Diagnostic Monitor interface;
l Case operating temperature: 0℃ ~ +70 ℃
I. Pin Diagram

II. Pin DFSCRiptions
Pin | Symbol | Name/DFSCRiption | |
1 | GND | Ground | 1 |
2 | Tx2n | Transmitter Inverted Data Input | |
3 | Tx2p | Transmitter Non-Inverted Data Input | |
4 | GND | Ground | 1 |
5 | Tx4n | Transmitter Inverted Data Input | |
6 | Tx4p | Transmitter Non-Inverted Data Input | |
7 | GND | Ground | 1 |
8 | ModSe1L | Module Select | |
9 | ResetL | Module Reset | |
10 | Vcc Rx | +3.3V Power supply receiver | |
11 | SCL | 2-wire serial interface clock | |
12 | SDA | 2-wire serial interface data | |
13 | GND | Ground | 1 |
14 | Rx3p | Receiver Non-Inverted Data Output | |
15 | Rx3n | Receiver Inverted Data Output | |
16 | GND | Ground | 1 |
17 | Rx1p | Receiver Non-Inverted Data Output | |
18 | Rx1n | Receiver Inverted Data Output | |
19 | GND | Ground | 1 |
20 | GND | Ground | 1 |
21 | Rx2n | Receiver Inverted Data Output | |
22 | Rx2p | Receiver Non-Inverted Data Output | |
23 | GND | Ground | 1 |
24 | Rx4n | Receiver Inverted Data Output | |
25 | Rx4p | Receiver Non-Inverted Data Output | |
26 | GND | Ground | 1 |
27 | ModPrSL | Module Present | |
28 | IntL | Interrupt | |
29 | Vcc Tx | +3.3V Power supply transmitter | |
30 | Vcc1 | +3.3V Power Supply | |
31 | LPMode | Low Power Mode | |
32 | GND | Ground | 1 |
33 | Tx3p | Transmitter Non-Inverted Data Input | |
34 | Tx3n | Transmitter Inverted Data Input | |
35 | GND | Ground | 1 |
36 | Tx1p | Transmitter Non-Inverted Data Input | |
37 | Tx1n | Transmitter Inverted Data Input | |
38 | GND | Ground | 1 |
Note:Circuit ground is internally isolated from chassis ground.
III. Absolute Maximum Ratings
Parameter | Symbol | Min. | Typ. | Max. | Unit | Ref. |
Storage Temperature | TS | -40 | 85 | ºC | ||
Storage Ambient Humidity | HA | 0 | 85 | % | ||
Maximum Supply Voltage | VCC | -0.5 | 3.6 | V | ||
Lead Soldering Temperature/Time | TSOLD | 260/10 | ºC/sec | 1 | ||
Lead Soldering Temperature/Time | TSOLD | 360/10 | ºC/sec | 2 |
Note:
1.Suitable for wave soldering.
2. Only for soldering by iron.
IV. Recommended Operating Conditions
Data Rate Spcifications | Symbol | Min. | Typ. | Max. | Unit | Ref. |
Supply Voltage | Vcc | 3.13 | 3.3 | 3.47 | V | |
Baud Rate(per channel ) PAM4 | BR | 26.5625 | GBd | 1 | ||
Operating Case Temperature | Tc | 0 | 70 | ℃ | ||
Link distance on OM3 MMF | d | 70 | meters | |||
Link distance on OM4 MMF | d | 100 | meters |
Notes:
1. Supports 200GBASE-SR4 per IEEE 802.3cd.
V. Optical Characteristics
Parameter | Symbol | Min. | Typ. | Max. | Unit | Ref. |
Transmitter(per lane) | ||||||
Average Output Power per lane | POUT | -6.5 | 4 | dBm | ||
Outer Optical Modulation Amplitude per lane | OMAOUT | -4.5 | 3 | dBm | ||
Extinction Ratio | ER | 3 | dB | |||
Center Wavelength | λC | 840 | 860 | nm | ||
RMS Spectral Width | σ | 0.6 | nm | |||
Launch power in OMAOUT minus TDECQ | PTDECQ | -5.9 | dBm | |||
Transmitter and dispersion eye closure (each lane) | TDECQ | 4.5 | dB | |||
Transmitter OFF Output Power | POff | -30 | dBm | |||
Optical Return Loss Tolerance | ORLT | 12 | dB | |||
Receiver(per lane) | ||||||
Input Optical Wavelength | λIN | 840 | 860 | nm | ||
Average Recevive Power per lane | Pin | -8.4 | 4 | dBm | ||
Receiver Power ( OMAOUT ) each lane | ROMA | 3 | dBm | |||
Rx Sensitivity( OMAOUT ) per lane (SECQ=1.4 dB) | RSENS | -6.5 | dBm | 1 | ||
Stressed Rx Sensitivity(OMA) per lane | SRSENS | -3 | dBm | |||
Damage threshold | PDT | 5 | dBm | |||
Receiver Reflectance | Rfl | -12 | dBm | |||
LOS Assert | LOSA | -30 | dBm | |||
LOS De-Assert | LOSD | -9 | dBm | |||
LOS Hysteresis | LOSH | 0.5 | dB | |||
Note:
1. BER<2.4E-4,Pattern PRBS31Q.
VI. Electrical Interface Characteristics
Parameter | Symbol | Min. | Typ. | Max. | Unit | Ref. |
Supply Voltage | VCC 1, VCCTX, VCCRX |
3.15 |
3.45 |
V | ||
Power Dissipation | Pd | 6 | W | |||
Transmitter(per Lane) | ||||||
Input different impedance | Rin | 90 | 100 | 110 | Ω | |
Single ended input voltage tolerance | VinT | -0.3 | 4.0 | V | ||
Differential Input Voltage Amplitude | Vin,pp | 900 | mV | |||
Receiver (per Lane) | ||||||
Error Bit Rate | BER | 2.4E-4 | ||||
Output different impedance | Rout | 90 | 100 | 110 | Ω | |
Single-ended output voltage | VoutR | -0.3 | 4.0 | V | ||
Differential Output Voltage Amplitude | Vout,pp | 900 | mV | |||
VII. Digital Diagnostic Functions
VIII. Recommended Interface Circuit
IX. Mechanical Specifications (Unit: mm)

Product Features
l Supports 212.5Gb/s aggregate bit rate
l 4x26.5625GBd(PAM4)electrical interface
l VCSEL Transmitter
l PIN and TIA array on the receiver side
l Maximum link length of 100m on
l OM4 Multimode Fiber (MMF)
l Hot-pluggable QSFP56 footprint
l Single MPO 12 receptacle
l Low power Consumption
l RoHS-6 compliant and lead-free
l +3.3V single power supply
l Support Digital Diagnostic Monitor interface
l Case operating temperature: 0℃ ~ +70 ℃
Applications | Compliance |
200GBASE-SR4 200G Ethernet | QSFP MSA. |
IEEE802.3cd | |
SFF-8636 | |
RoHS |
Ordering Information
Part NO. | Bit Rate (Gbps) | Laser (nm) | Distance(m) | Media | DDMI | Connector | Temp(℃) |
FSCRMM85-S10C | 212.5 | 850 | 100 (OM4) | multi-mode fiber | YES | MPO 1X12 | 0~70 |