STMUX1800E Datasheet, PDF (1/26 Pages) STMicroelectronics – 16-bit to 8-bit MUX/DEMUX for gigabit Ethernet LAN switch with LED switch and enhanced ESD protection

STMUX1800E
16-bit to 8-bit MUX/DEMUX for gigabit Ethernet LAN switch
with LED switch and enhanced ESD protection
Features
■ Low R_ON: 4.0 Ω typical
■ V_CC operating range: 3.0 to 3.6 V
■ Enhanced ESD protection: > 8 kV (contact)
and 15 kV (HBM)
■ Low power mode for minimum power
consumption
■ Channel on capacitance: 9.5 pF typical
■ Switching time speed: 9 ns
■ Near to zero propagation delay: 250 ps
■ Very low crosstalk: -45 dB at 250 MHz
■ Bit-to-bit skew: 200 ps
■ > 600 MHz -3 dB typical bandwidth (or data
frequency)
■ Three SPDT switches for LED support
■ Rail-to-rail switching on data I/O ports
(0 V to 5 V)
■ Package: QFN42
■ Lead-free
Applications
■ 10/100/1000 Mbit Ethernet switching
■ Audio/video switching
QFN42
Description
The STMUX1800E is a 16 to 8-bit multiplexer/
demultiplexer low R_ON bidirectional LAN switch
designed for various standards, such as
10/100/1000 Ethernet. It is designed for very low
crosstalk, low bit-to-bit skew and low I/O
capacitance.
The differential signal from the Gigabit Ethernet
transceiver is multiplexed into one of two selected
outputs while the unselected switch goes to Hi-Z
status.
The device integrates three SPDT (single pole
dual throw) switches, for LED support.
The device can be put into low power mode
consuming minimum power.
Table 1. Device summary
Order code
Package
STMUX1800EQTR QFN42
Packing
Tape and reel
November 2011
Doc ID 16772 Rev 3
1/26
www.st.com
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