# NT74804 10 Base-T LAN Modules with CMC

## Features

· Meets 802.3 10 Base-T Specification
· Compact SMD package
· Available in Tape & Reel format

## Electrical Specifications (at 25°C)

Key Parameters

· Turns Ratio: 1CT:1CT ±5% (various pin combinations measured with HP4284A)
· Insertion Loss: 1.0 dB MAX (Tx & Rx Channel, HP8751A @ 1-10 MHz)
· Cutoff Frequency: 17 MHz typ. (Tx & Rx Channel, HP8751A @ 3 dB)
· Attenuation:
- 30 dB MIN (Tx Channel, HP8751A @ 30 MHz)
- 35 dB MIN (Tx Channel, HP8751A @ 50 & 100 MHz)
- 25 dB MIN (Rx Channel, HP8751A @ 30 MHz)
- 30 dB MIN (Rx Channel, HP8751A @ 50 & 100 MHz)
· Return Loss:
- 18 dB MIN (@ 100Ω Load, Tx & Rx Channel, HP8751A @ 5-10 MHz)
- 15 dB MIN (@ 98±13Ω Load, Tx & Rx Channel, HP8751A @ 5-10 MHz)
· CMRR:
- 60 dB MIN (Tx & Rx Channel, HP8751A @ 5-10 MHz)
- 55 dB MIN (Tx & Rx Channel, HP8751A @ 50 MHz)
- 50 dB MIN (Tx & Rx Channel, HP8751A @ 100 MHz)
- 45 dB MIN (Tx & Rx Channel, HP8751A @ 200 MHz)
· Cross Talk: 35 dB MIN (Tx Channel to Rx Channel, HP8751A @ 5-10 MHz)
· HI-POT: 1500 VAC (Chip Side to Cable Side)

## Mechanical Details

· Seating Plane Co-planarity: 0.004 (0.1)
· Dimensions provided in inches (mm) with tolerances of +/- 0.010 (0.25)
· Dimensions exclude solder.

## Contact Information

· Datatronic:
- 28151 Highway 74, Romoland, CA 92585
- Tel: 951-928-7700, Toll Free: 888-889-5391
- Fax: 951-928-7701
- Email: ddisales@datatronics.com
· Hong Kong:
- 499 King’s Road
- Tel: (852) 2562 3858, (852) 2564 8477
- Fax: (852) 2565 7214, (852) 2563 1290