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Manufacturer Part #


SY89543L Series 3.3 V 3.2 Gbps Dual Differential 2:1 LVDS Multiplexer - MLF-32

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Mfr. Name: Microchip
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Product Specification Section
Technical Attributes
Attributes Table
Type: Multiplexer
Configuration: 2 x 2:1
No of Channels: 4
Supply Voltage: 3V to 3.6V
Package Style:  MLF-32
Mounting Method: Surface Mount
Features & Applications

The SY89543LMG TR includes two precision, high-speed 2:1 differential Muxes with LVDS (350 mV) compatible outputs with a guaranteed data rate throughput of 3.2 Gbps over temperature and voltage.

The SY89543L differential inputs include a unique, 3-pin internal termination that allows access to the termination network through a VT pin. This feature allows the device to easily interface to different logic standards, both AC- and DC-coupled without external resistor-bias and termination networks. The result is a clean, stub-free, low jitter interface solution. The SY89543L operates from a single 3.3 V supply, and is guaranteed over the full industrial temperature range (–40°C to +85°C). For applications that require a 2.5 V supply, consider the SY89542U. The SY89543L is part of a Micrel’s Precision Edge® product family.

Key Features:

  • Dual 2:1 multiplexer.
  • Guaranteed AC performance over temp and voltage:
  • DC-to > 3.2 Gbps data rate throughput.
  • < 510ps In-to-Out tpd.
  • < 150ps tr/tf.
  • Ultra-low jitter design:
  • < 1 psRMS random jitter.
  • < 10 psPP deterministic jitter.
  • < 10 psPP total jitter (clock).
  • < 0.7 psRMS crosstalk-induced jitter.
  • Unique input isolation design minimizes crosstalk.
  • Internal input termination.
  • Unique input termination and VT pin accepts DCcoupled.
  • and AC-coupled inputs (LVDS, LVPECL, CML).
  • 350 mV LVDS output swing.
  • CMOS/TTL compatible MUX select.
  • Power supply 3.3 V +10%.
  • –40 to +85°C temperature range.
  • Available in 32-pin (5 mm x 5 mm) MLF® package.


  • Redundant clock/data switchover.
  • SONET/SDH multi-channel select applications.
  • Fiber Channel applications.
  • GigE applications.
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