LTC1321 LINER [Linear Technology], LTC1321 Datasheet - Page 15

• Manufacturer Part Number: LTC1321
• Description: RS232/EIA562/RS485 Transceivers
• Manufacturer: LINER [Linear Technology]

A
TXDEN
TXDEN
PPLICATI
RXEN
RXDO
RXEN
RXDO
RXO
RXO
TXD
TXD
RXO
RXO
TXI
TXI
2
1
4
8
9
3
5
6
7
2
1
4
7
8
9
3
5
6
LTC1320
LTC1320
O
U
S
17
13
18
16
15
14
12
11
10
RFI
17
13
18
16
15
14
12
11
10
I FOR ATIO
TXD
TXD
5V
RXD
5V
RXD
TXD
TXD
TXO
RXI
RXI
RXD
=
5V
RXD
U
– 5V
–
+
–
+
–
+
–
+
22
RFI
RFI
RFI
RFI
RFI
RFI
RFI
RFI
RFI
RFI
RFI
1k
W
22
100pF
Figure 16. AppleTalk Direct Connect Using LTC1320
for DTE and LTC1335 for DCE Transceivers
1k
120
120
Figure 15. Apple LocalTalk Implemented Using
LTC1320 and LTC1335 Transceivers
120
U
RFI
=
22
22
100pF
120
LTC1321/LTC1322/LTC1335
120
120
SEL2, 5V
SEL1, 5V
1k
1k
SEL1, 5V
SEL2
RFI
OE
RFI
RFI
RFI
RFI
RFI
RFI
RFI
RFI
RFI
RFI
OE
10
12
11
10
12
11
8
9
3
4
5
1
2
6
7
8
3
4
5
9
1
2
6
7
LTC1335
LTC1335
15
19
18
16
14
1321/22/35 F15
24
23
21
20
17
15
13
22
19
18
14
1321/22/35 F16
24
23
20
17
16
15
13
22
21
R
DE1
D
5V
5V
5V
–5V
R
DE1
R
D
D
D
5V
5V
5V
–5V
A1
Y1
A1
A2
Y1
Y2
Z2