TMC2005 Ver la hoja de datos (PDF) - SMSC -> Microchip
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TMC2005 Datasheet PDF : 32 Pages
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Example 5: An on-board type HUB with a COM20020 and four RS485 transceivers.
+5V
1
R
nRE 2
SN75176
3
DE
D4
1
R
nRE 2
SN75176 DE 3
D4
R1
2
nRE
SN75176 DE 3
D4
R1
nRE 2
SN75176 DE 3
D4
15
nPULSE1
nTXEN 18
COM20020
17
RXIN
UA
1
3
2
1
46
47
48
49
50
RXINA0
SA
TXENA0
LA
51
52
53
54
55
56
57
RXINA1
MA
TXENA1
VDD6
VSS8
RXINB0
SB
58 TXENB0
59
60
LB
RXINB1
MB
TMC2005
30
VSS5
VSS3
AVSS
AGS
29
28
27
26
LP
RO
AVDD
VDD3
VDD4
VSS4
XTLO
25
24
23
22
21
20
19
XTLI 18
VDD2
nPLLTST
RXFLT
17
16
FIGURE 5 - APPLICATION EXAMPLE 5
Only the TMC2005 and four transceivers with the COM20020 are indicated in the above figure. Connect the other
pins adequately.
SMSC DS – TMC2005
Page 17
Rev. 10/24/2000
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