Datasheet

14
LTC1334
5V
0.33µF
0.33µF
1µF
3
26
5V
1
TXD
–
RXD
–
TXD
+
RXD
+
120Ω
2
LTC1323CS-16
LTC1334 • F19
TXD
7
3
4
1k
1k
RXEN
5
6
21
LTC1334
18
R
A1
4
5
10
9
8
13
14
17
DE1
D
Y1
19
5V
5V
20
16
15
120Ω
SEL1, 5V
SEL2, 5V
11
24
6
23
8
16
15
10
14
13
12
11
9
12
25
7
22
28
2
1
27
TXDEN
SHDN
RXDO
1k
1k
CHARGE
PUMP
0.1µF0.1µF
0.1µF
0.1µF
EMI
EMI
EMI
EMI
EMI
EMI
EMI
EMI
100pF 100pF
5Ω TO
22Ω
5Ω TO
22Ω
100pF
FERRITE
BEAD
FERRITE
BEAD
= OR OR
EMI
NC
NC
NC
NC
NC
NC
NC
NC
NC
U
S
A
O
PP
L
IC
AT
I
WU
U
I FOR ATIO
Figure 20. AppleTalk Direct Connect Using the LTC1323 DTE and the LTC1334 for DCE Transceivers
5V
0.33µF
0.33µF
1µF
3
26
5V
1
TXD
–
TXO
TXD
+
RXI
120Ω
2
LTC1323CS
LTC1334 • F20
CPEN
7
3
4
TXDEN
5
6
21
LTC1334
18
R
A1
R
A2
4
5
10
9
8
13
14
17
DE1
D
Y1
D
Y2
D
Z2
19
5V
5V
20
16
15
120Ω
120Ω
120Ω
SEL1
5V
SEL2
11
24
6
23
12
24
23
18
22
21
20
19
17
RXI
16
RXD
–
15
RXD
+
14
13
12
25
7
22
28
2
1
27
TXD
TXI
SHDN
8
RXEN
9
RXO
10
11
RXO
RXDO
CHARGE
PUMP
0.1µF0.1µF
0.1µF
0.1µF
EMI
EMI
EMI
EMI
EMI
EMI
EMI
EMI
EMI
EMI
EMI
EMI
NC
NC
NC
100pF 100pF
5Ω TO
22Ω
5Ω TO
22Ω
100pF
FERRITE
BEAD
FERRITE
BEAD
= OR OR
EMI
EMI
EMI
Figure 19. AppleTalk/LocalTalk Implemented Using the LTC1323CS-16 and LTC1334 Transceivers
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