Overview

Please use GS2988 for new designs.

The GS1678 is a high-speed BiCMOS integrated circuit designed to drive one or two 75Ω 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.

Order Codes

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

PB Free/ROHS

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Features

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