defining a degree of excellence
TOKENRINGNETWORKING
COMPONENTS
• Designed for use with Texas Instruments
C380C30/C60 token ring transceivers
• Complies with IEEE 802.5 standards, including low
frequency cutoff
• 2000 Vrms isolation
960039A
• Customized design featuring additional common mode
suppression
• Supports STP 150 ohm or UTP 100 ohm cable
ELECTRICALS AT 25ºC
Part No.
Return Loss
(dB) Min
1-17MHz 17-25MHz
Insertion Loss
(dB) Max
4MHz 8MHz 16MHz 24MHz
Common to Common
Mode Rej (dB) Min
5MHz 20MHz 200MHz
Crosstalk
(dB) Min
8MHz 16MHz 24MHz
A556-5999-23
-12
-10
-0.5
-0.8
-1.1
-1.9
-50
-45
-25
-55
-50
-45
SCHEMATIC
MECHANICAL
Specifications subject to change without notice.
Bel Fuse Inc.
198 Van Vorst Street, Jersey City, NJ 07302 • Tel: 201-432-0463 • Fax: 201-432-9542 • E-Mail: BelFuse@belfuse.com
Website: http://www.belfuse.com
defining a degree of excellence
960039A
TOKENRINGNETWORKING
COMPONENTS
APPLICATION CIRCUIT
APPLICATION NOTES
• 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.
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
京公网安备 11010802033920号
EEWORLD
