COM20020I3V-DZD-TR Standard Microsystems (SMSC), COM20020I3V-DZD-TR Datasheet - Page 16

• Manufacturer Part Number: COM20020I3V-DZD-TR
• Manufacturer: Standard Microsystems (SMSC)

Specifications of COM20020I3V-DZD-TR

• Number Of Transceivers: 1
• Operating Supply Voltage (typ): 3.3V
• Operating Temperature (max): 85C
• Operating Temperature (min): -40C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 28
• Lead Free Status / RoHS Status: Compliant

Revision 12-06-06
nPULSE
nPULSE
FIGURE 2 - MULTIPLEXED, 8051-LIKE BUS INTERFACE WITH RS-485 INTERFACE
TXEN
RXIN
GND
8051
BACKPLANE
AD0-
RESET
XTAL1
XTAL2
nINT1
ALE
A15
nWR
FIGURE A
nRD
DATASHEET
A0/nMU
AD0-AD2, D3-
A2/BAL
nRESET
nRD/nD
nWR/DI
27 pF
nCS
+3.3V
nINTR
100
16
XTAL1
COM20020I
20 MHz
XTAL
5Mbps ARCNET (ANSI 878.1) Controller with 2K x 8 On-Chip RAM
nPULSE
XTAL2
NOTE: COM20020 must be in backplane mode
RXIN
nPULSE
nPULSE
nTXEN
RXIN
GND
27 pF
3.3V-5V Converter
FIGURE B
Differential
Configuratio
*
Media
with Figure A, B or
may be
+5V
+5V
LTC1480 or
Equiv.
2
6
7
3
2
6
7
2 Fiber
(ST
HFD3212-
HFE4211-
Transmitte
Receive
SMSC COM20020I 3.3V