Cable Drivers
  • GS6080
  • Multi Rate 6G UHD-SDI Cable Driver
  • GS6081
  • Multi Rate 6G UHD-SDI Dual Output Cable Driver
  • GS3490
  • Configurable Multi-rate 3G Cable Driver and Adaptive Equalizer
  • GS12181
  • 12G UHD-SDI Retiming Cable Driver
  • GS2988
  • Multi-rate 3G SDI Cable Driver
  • GS2989
  • Multi-rate 3G SDI Dual Output Cable Driver
  • GS2978
  • Multi-rate 3G SDI Cable Driver
  • GS1679
  • Multi-rate Dual Slew-rate Cable Driver for HD-SDI, SD-SDI & DVB-ASI
Semtech GS1678

Semtech GS1678

Multi-rate HD-SDI Cable Driver

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The GS1678 is a high-speed BiCMOS integrated circuit designed to drive one or two 75? coaxial cables. The GS1678 can drive data rates up to 1.485Gb/s, and provides two selectable slew rates in order to achieve compliance to SMPTE 292M, SMPTE 259M and SMPTE 344M.

The GS1678 accepts industry-standard differential input levels, including LVPECL and CML. The DISABLE pin powers-down the output driver, leaving the serial data output in a high-impedance state. The GS1678 features an adjustable output swing using an external bias resistor. The single-ended output swing is adjustable from 600mVpp to 1200mVpp. The GS1678 can be powered from either a 3.3V or a 2.5V supply. Power consumption is typically 110mW using a 2.5V power supply.

The GS1678 is footprint and drop-in compatible with existing GS1578A and LMH0002 designs, with no additional application changes required.


  • Pin-compatible with and replaces the LMH0002
  • SMPTE 292M, SMPTE 259M and SMPTE 344M compliant
  • Supports data rates from 270Mb/s to 1.485Gb/s
  • Supports DVB-ASI at 270Mb/s
  • Wide common-mode range input buffer
    • 100mV sensitivity
    • Supports DC-coupling to industry-standard differential logic
    • on-chip 100? differential data input termination
  • Differential coaxial-cable-driving outputs
    • selectable slew rates
    • adjustable output swing from 600mVpp to 1200mVpp
    • DISABLE control
  • Robust output signal presence function
  • Excellent output eye quality
  • Power supply operation at 3.3V or 2.5V
  • 110mW power consumption (2.5V supply)
  • Operating temperature range: -40°C to +85°C
  • Small footprint QFN package (4mm x 4mm)
  • Drop-in compatible with the GS1578A
  • Pb-free and RoHS compliant


  • Audio De-embedders
  • Audio Embedders
  • Camera
  • Camera Control Unit
  • Distribution Amplifiers
  • Encoders/Decoders
  • Format Detectors
  • Master Control Switchers
  • Monitors, Multiviewers
  • Production Switchers
  • Routers
  • SMPTE 292M and SMPTE 259M coaxial cable serial digital interfaces
  • Test and Measurement Equipment
  • Up/Down/Cross Converters
  • Video Capture Cards
  • Video Servers
  • Video Tape Recorders

Order Codes

  • GS1678-INTE3: Lead-Free, RoHS Compliant, Tape and Reel-250 Pieces
  • GS1678-INE3: Lead-Free, RoHS Compliant, Tray-490 Pieces
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