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RXIN
nPULSE1
nPULSE2
nTXEN
GND
Traditional Hybrid
Configuration
RXIN
nPULSE1
nPULSE2
17, 19,
4, 13, 14
5.6K
1/2W
5.6K
1/2W
0.01 uF
1KV
12
11
-5V
0.47
uF
10
uF
+
3
0.47
uF
+
+5V
uF
10
6
FIGURE C
D0-D7
nIRQ1
nRES
nIOS
R/nW
A7
D0-D7
nCS
nRESET IN
nRD/nDS
nWR/nDIR
nINTR
A0/nMUX
A0
XTAL1
XTAL2
X
T
A
L
1
X
T
A
L
2
A1
A1
A2/BALE
A2
27 pF
27 pF
RXIN
nPULSE1
nPULSE2
TXEN
GND
Differential Driver
Configuration
6801
FIGURE 3 - NON-MULTIPLEXED, 6801-LIKE BUS INTERFACE WITH RS-485 INTERFACE
COM20020
Media Interface
HYC9088
HYC9068 or
may be replaced
with Figure A, B or C.
*
N/C
75176B or
Equiv.
2
0
M
H
z
X
T
A
L