The Cisco GLC-SX-MM operates on ordinary multi-mode fiber optic link spans of up to 550 m in length on the 850-nm wavelength.

Cisco's industry-standard SFP is a hot-swappable input/output device that plugs into a Gigabit Ethernet port/slot, linking the port with the fiber-optic network. SFPs can be used and interchanged on a wide variety of Cisco products and can be intermixed in combinations of IEEE 802.3z- compliant 1000BaseSX, 1000BaseLX/LH, or 1000BaseZX interfaces on a port-by-port basis.

Features:

*Hot-pluggable capability

*Digital diagnostic monitoring

*MQW FP Structure or DFB Laser

*Duplex LC connector

*Single +3.3V supply & LVPECL data interface

*LVTTL logic level RX LOS

*Class 1 Laser Safety Compliance

*Detailed product information in EEPROM

*Excellent EMI & ESD protection

*Qualified to meet the intent of Bellcore reliability practices

*Compliant with SFP MSA specification and SFF-8472

*Links of narrow, intermediate or long reach with single or Multi-mode fiber

Applications:

*ATM

*SONT/SDH/PDH

*FDDI

*Fiber Channel

*CWDM

Function de scription:

The SFP (Small Form Factor Pluggable ) transceivers is compliant with SFP MSA (Multi-Source Agreement ) and SFF-8472. All modules satisfy Class I Laser Safety requirements in accordance with the international IEC-825 standards.The transmit and receive functions are contained in a SFP 20 pin package with a Duplex LC or SC connector interface.

The transmitter incorporates a highly reliable 1310 nm or 1550 nm Laser (FP laser for narrow, Intermediate distance and DFB laser for long distance)

and a driver circuit which converts data to light with APC function. The output power can be disable via he single TX_Disable pin. Logic LVTTL HIGH

level disables the transmitter. The receiver incorporates an efficient InGaAs/InP PIN or APD photodiode receiver converting the light signal into an

electrical current which is amplified and regenerated into data. The transimpedance amplifier IC has internal AGC for wide dynamic range.

The postamplifier is AC coupled to preamplifier through a capacitor and a low pass filter. It can be enough to pass the signal from 100Mb/s to

2.5Gb/s without significant sensitivity. A Signal Detect status output flag is also provided.

The transceiver operates from a single +3.3V power supply over an operating temperature range of 0 to +70C. The transceiver uses the SFP 20-pin connector to allow hot plug capability. Detailed product information in EEPROM and digital diagnostic monitoring is offered.