Datasheet

6
LTC1546
BLOCK DIAGRA
W
UU
U
PI FU CTIO S
R3 B (Pin 15): Receiver 3 Noninverting Input.
R3 A (Pin 16): Receiver 3 Inverting Input.
R2 B (Pin 17): Receiver 2 Noninverting Input.
R2 A (Pin 18): Receiver 2 Inverting Input.
D3/R1 B (Pin 19): Receiver 1 Noninverting Input and
Driver 3 Noninverting Output.
D3/R1 A (Pin 20): Receiver 1 Inverting Input and Driver 3
Inverting Output.
D2 B (Pin 21): Driver 2 Noninverting Output.
D2 A (Pin 22): Driver 2 Inverting Output.
D1 B (Pin 23): Driver 1 Noninverting Output.
D1 A (Pin 24): Driver 1 Inverting Output.
GND (Pin 25): Ground.
V
EE
(Pin 26): Negative Supply Voltage. Connect a 3.3µF
capacitor to GND.
C2
–
(Pin 27): Capacitor C2 Negative Terminal. Connect a
1µF capacitor between C2
+
and C2
–
.
C2
+
(Pin 28): Capacitor C2 Positive Terminal. Connect a
1µF capacitor between C2
+
and C2
–
.
C1
–
C1
+
V
DD
V
CC
C1
–
C1
+
V
DD
V
CC
C2
+
C2
–
V
EE
GND
C2
+
C2
–
V
EE
GND
CHARGE PUMP
D1
D1A
50Ω
125Ω
50Ω
S1
S2
D1B
D1
D2
D2A
50Ω
125Ω
50Ω
S1
S2
D2B
S3
S2
20k
20k
20k
20k
125Ω
S2
S3
125Ω
10k 6k
S1
51.5Ω
D3/R1 A
D3/R1 B
51.5Ω
10k
10k
10k
51.5Ω
R2A
R2B
51.5Ω
D2
D3
DCE/DTE
R1
D3
R1
R2
R2
6k
20k
20k
S2
S3
125Ω
10k
10k
51.5Ω
R3A
R3B
1546 BD
51.5Ω
R3
R3
6k
281
2
3
4
5
6
7
14
8
9
10
27
26
25
24
23
22
21
20
19
18
17
16
15