MAX9242

www.DataSheet4U.com 19-3954; Rev 0; 1/06 21-Bit Deserializers with Programmable Spread Spectrum and DC Balance General Description The MAX9242/MAX9244/MAX9246 deserialize three LVDS serial-data inputs into 21 single-ended LVCMOS/ LVTTL outputs. A separate parallel-rate LVDS clock provides the timing for deserialization. The MAX9242/ MAX9244/MAX9246 feature spread-spectrum capability, allowing the output data and clock frequency to spread over a specified range to reduce EMI. The single-ended data and clock outputs are programmable for a frequency spread of ±2%, ±4%, or no spread. The spread-spectrum function is also available when the MAX9242/MAX9244/ MAX9246 operate in non-DC-balanced mode. The modulation rate of the spread is 32kHz for a 33MHz LVDS clock input and scales linearly with frequency. The singleended outputs have a separate supply, allowing +1.8V to +5V output logic levels. The MAX9242/MAX9244/MAX9246 feature programmable DC balance, allowing isolation between a serializer and deserializer using AC-coupling. The MAX9242/ MAX9244/MAX9246 operate with the MAX9209/ MAX9213 serializers and are available with a risingedge strobe (MAX9242) or falling-edge strobe (MAX9244/MAX9246). The LVDS inputs meet ISO 10605 ESD specifications with ±30kV Air-Gap Discharge and ±6kV Contact Discharge ratings. The MAX9242/MAX9244/MAX9246 are available in a 48-pin TSSOP package and operate over the -40°C to +85°C temperature range. Features ♦ Programmable ±4%, ±2%, or OFF Spread-Spec...