LTC1334
O U
W
U
PPLICATI
A
S I FOR ATIO
1
2
3
28
27
26
25
24
LTC1323CS-16
0.1µF
0.1µF
1
2
3
4
16
LTC1334
5V
CHARGE
PUMP
0.33µF
15
14
13
12
5V
0.1µF
0.33µF
1µF
4
NC
EMI
TXD
1k
R
5
6
A1
TXDEN
EMI
EMI
–
+
TXD
23
22
DE1
5
EMI
SHDN
120Ω
120Ω
1k
1k
6
7
8
11 TXD
7
D
Y1
RXEN
RXDO
EMI
EMI
EMI
EMI
–
+
10 RXD
RXD
8
9
21
20
1k
5V
5V
SEL1, 5V
SEL2, 5V
9
10
FERRITE FERRITE
5Ω TO 5Ω TO
22Ω 22Ω
NC
19
18
BEAD
BEAD
NC
NC
=
OR
OR
EMI
11
12
NC
NC
100pF
100pF
100pF
17
16
15
NC
NC
13
14
NC
0.1µF
LTC1334 • F19
Figure 19. AppleTalk/LocalTalk Implemented Using the LTC1323CS-16 and LTC1334 Transceivers
FERRITE FERRITE
5Ω TO 5Ω TO
BEAD
BEAD
22Ω
22Ω
=
OR
OR
EMI
5V
LTC1323CS
100pF
100pF
100pF
1
24
23
22
21
20
1
2
3
28
CHARGE
PUMP
0.33µF
2
3
4
0.1µF
0.1µF
LTC1334
27
26
0.33µF
CPEN
TXD
1µF
5V
0.1µF
–
+
25
24
TXD
5
6
4
NC
R
TXI
EMI
EMI
120Ω
A1
120Ω
TXDEN
5
6
19 TXD
18 TXO
EMI
EMI
EMI
EMI
7
8
SHDN
RXEN
23
22
DE1
120Ω
17 RXI
16 RXI
7
D
Y1
EMI
EMI
9
10
11
8
9
21
20
SEL1
5V
RXO
RXO
5V
5V
EMI
EMI
SEL2
–
15 RXD
10
RXDO
19
18
EMI
D
Y2
120Ω
+
14 RXD
13
11
12
13
14
EMI
D
Z2
EMI
NC
12
17
16
15
R
A2
EMI
NC
0.1µF
LTC1334 • F20
Figure 20. AppleTalk Direct Connect Using the LTC1323 DTE and the LTC1334 for DCE Transceivers
14
Linear [ Linear ]
