DS42BR400 Series

Quad 4.25-Gbps CML transceiver with transmit de-emphasis & receive equalization

Catalog

Quad 4.25-Gbps CML transceiver with transmit de-emphasis & receive equalization

Part	Supplier Device Package	Data Rate	Mounting Type	Package / Case	Number of Drivers/Receivers [custom]	Number of Drivers/Receivers [custom]	Operating Temperature [Max]	Operating Temperature [Min]	Type	Duplex	Voltage - Supply [Max]	Voltage - Supply [Min]	Utilized IC / Part	Supplied Contents	Function
Texas Instruments DS42BR400TSQ	60-WQFN (9x9)	4.25 Gbps	Surface Mount	60-WFQFN Exposed Pad	4	4	85 °C	-40 °C	Transceiver	Full	3.465 V	3.135 V
Texas Instruments DS42BR400TSQ/NOPB	60-WQFN (9x9)	4.25 Gbps	Surface Mount	60-WFQFN Exposed Pad	4	4	85 °C	-40 °C	Transceiver	Full	3.465 V	3.135 V
Texas Instruments DS42BR400-EVK									Interface				DS42BR400	Board(s)	Transceiver CML

Catalog

Quad 4.25-Gbps CML transceiver with transmit de-emphasis & receive equalization

Key Features

• 250 Mbps – 4.25 Gbps Fully Differential Data PathsOptional Fixed Input EqualizationSelectable Output De-emphasisIndividual Loopback ControlsOn-Chip TerminationLead-less WQFN-60 Pin Package (9 mm x 9 mm x 0.8 mm, 0.5 mm Pitch)−40°C to +85°C Industrial Temperature Range6 kV ESD Rating, HBMAll trademarks are the property of their respective owners.250 Mbps – 4.25 Gbps Fully Differential Data PathsOptional Fixed Input EqualizationSelectable Output De-emphasisIndividual Loopback ControlsOn-Chip TerminationLead-less WQFN-60 Pin Package (9 mm x 9 mm x 0.8 mm, 0.5 mm Pitch)−40°C to +85°C Industrial Temperature Range6 kV ESD Rating, HBMAll trademarks are the property of their respective owners.

Description

The DS42BR400 is a quad 250 Mbps – 4.25 Gbps CML transceiver, or 8-channel buffer, for use in backplane and cable applications. With operation down to 250 Mbps, the DS42BR400 can be used in applications requiring both low and high frequency data rates. Each input stage has a fixed equalizer to reduce ISI distortion from board traces. The equalizers are grouped in fours and are enabled through two control pins. These control pins provide customers flexibility where ISI distortion may vary from one direction to another. All output drivers have four selectable steps of de-emphasis to compensate against transmission loss across long FR4 backplanes. The de-emphasis blocks are also grouped in fours. In addition, the DS42BR400 also has loopback control capability on four channels. All CML drivers have 50Ω termination to VCC. All receivers are internally terminated with differential 100Ω. The DS42BR400 is a quad 250 Mbps – 4.25 Gbps CML transceiver, or 8-channel buffer, for use in backplane and cable applications. With operation down to 250 Mbps, the DS42BR400 can be used in applications requiring both low and high frequency data rates. Each input stage has a fixed equalizer to reduce ISI distortion from board traces. The equalizers are grouped in fours and are enabled through two control pins. These control pins provide customers flexibility where ISI distortion may vary from one direction to another. All output drivers have four selectable steps of de-emphasis to compensate against transmission loss across long FR4 backplanes. The de-emphasis blocks are also grouped in fours. In addition, the DS42BR400 also has loopback control capability on four channels. All CML drivers have 50Ω termination to VCC. All receivers are internally terminated with differential 100Ω.