COM20020I3V-HT 查看數據表（PDF） - SMSC -> Microchip

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COM20020I3V-HT

5Mbps ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM

SMSC -> Microchip 

5Mbps ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM

CABLE TYPE

RG-62 Belden #86262

RG-59/U Belden #89108

RG-11/U Belden #89108

IBM Type 1* Belden #89688

IBM Type 3* Telephone Twisted

Pair Belden #1155A

COMCODE 26 AWG Twisted

Pair Part #105-064-703

Table 1 - Typical Media

NOMINAL

IMPEDANCE

ATTENUATION PER 1000 FT.

AT 5 MHz

93Ω

5.5dB

75Ω

7.0dB

75Ω

5.5dB

150Ω

7.0dB

100Ω

17.9dB

105Ω

16.0dB

*Non-plenum-rated cables of this type are also available.

Note: For more detailed information on Cabling options including RS-485, transformer-coupled RS-485 and Fiber Optic

interfaces, please refer to TN7-5 – Cabling Guidelines for the COM20020I 3V ULANC, available from Standard

Microsystems Corporation.

SMSC COM20020I 3.3V Rev.E

Page 23

DATASHEET

Revision 09-11-06

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