defining a degree of excellence

Corporate Office

Bel Fuse Inc.

198 Van Vorst Street, Jersey City, NJ 07302-4496

Tel: 201-432-0463

Fax: 201-432-9542

E-Mail: BelFuse@belfuse.com

Internet: http://www.belfuse.com

Far East Office

Bel Fuse Ltd.

8F/8 Luk Hop Street

San Po Kong

Kowloon, Hong Kong

Tel: 852-2328-5515

Fax: 852-2352-3706

European Office

Bel Fuse Europe Ltd.

Preston Technology Management Centre

Marsh Lane, Preston PR1 8UD

Lancashire, U.K.

Tel: 44-1772-556601

Fax: 44-1772-888366

960039A

APPLICATION NOTES

APPLICATION CIRCUIT

TOKENRINGNETWORKING

COMPONENTS

• This Bel token ring networking component has been developed for use with the Texas Instruments C30 integrated

comm processor and transceiver and C60 transceiver only. This Bel module provides signal shaping and high voltage

isolation, impedance matching, and EMI and noise suppression for both transmit and receive channels. This module

can be used in either 150 ohm STP or 100 ohm UTP cable environments.

• Suppression of board induced noise can be achieved with precision layout instructions, along with careful consideration

of the selection and placement of discrete components for the interface circuit.

• Do not connect both UTP and STP simultaneously. Only one media connection can be supported at any one time.

• Additional common mode chokes are available for further suppression of unwanted signals.