LTC1323
PI FU CTIO S
TXO:
Single-Ended Driver Output.
TXD
+
:
Differential Driver Noninverting Output.
TXD
–
:
Differential Driver Inverting Output.
V
EE
:
Negative Supply Charge Pump Output. Requires a
1µF bypass capacitor to ground. If an external load is
connected to the V
EE
pin, the bypass capacitor value
should be increased to 4.7µF.
C2
–
:
C2 Negative Input. Connect a 0.33µF capacitor
between C2
+
and C2
–
.
C2
+
:
C2 Positive Input. Connect a 0.33µF capacitor
between C2
+
and C2
–
.
V
CC
:
Positive Supply Input. 4.5V
≤
V
CC
≤
5.5V. Requires a
1µF bypass capacitor to ground.
TEST CIRCUITS
TXD
+
R
V
OD
R
TXD
–
LTC1323 • F01
LTC1323 • F02
V
OC
Figure 1
V
CC
500Ω
OUTPUT
C
L
LTC1323 • F04
Figure 4
SWITCHI G WAVEFOR S
3V
TXD
0V
t
PLH
V
O
–V
O
TXD
–
V
O
TXD
+
1.5V
W
U
U
U
U
TXI
RXD
+
TXD
–
R
L
C
L
C
L
RXD
+
RXD
–
RXDO
15pF
TXI
TXD
+
TXD
–
R
L
C
L
LTC1323 • F03
R
L
C
L
Figure 2
Figure 3
S1
TXI
TXO
C
L
R
L
RXI
RXO
C
L
RXI
RXO
C
L
S2
LTC1323 • F05
LTC1323 • F06
Figure 5
Figure 6
f = 1MHz: t
r
≤
10ns: t
f
≤
10ns
1.5V
t
PHL
90%
50%
10%
t
r
V
DIFF
= V(TXD
+
) – V(TXD
–
)
1/2 V
O
90%
50%
10%
t
f
t
SKEW
t
SKEW
LTC1323 • F07
Figure 7. Differential Driver
7
LINER [ LINEAR TECHNOLOGY ]
