LTC1386 LINER [Linear Technology], LTC1386 Datasheet - Page 4

• Manufacturer Part Number: LTC1386
• Description: 3.3V Low Power EIA/TIA562 Transceiver
• Manufacturer: LINER [Linear Technology]

PI FU CTIO S
SWITCHI G TI E WAVEFOR S
V
with a 0.1 F ceramic capacitor.
GND: Ground Pin.
V
2V
0.1 F for charge storage. The capacitor may be tied to
ground or V
may share a common capacitor. For large numbers of
devices, increasing the size of the shared common storage
capacitors is recommended to reduce ripple.
V
– 1.3V). This pin requires an external capacitor C = 0.1 F
for charge storage.
C1
pins require two external capacitors C = 0.1 F: one from
C1
LTC1386
4
OUTPUT
DRIVER
DRIVER
CC
+
–
INPUT
: Positive Supply Output (EIA/TIA562 Drivers). V
CC
: Negative Supply Output (RS232 Drivers). V
+
+
U
: 3.3V Input Supply Pin. This pin should be decoupled
, C1
to C1
– 1V. This pin requires an external capacitor C =
–
, C2
t
LHD
Figure 1. Driver Propagation Delay Timing
–
U
1.4V
CC
and another from C2
+
, C2
U
. With multiple devices, the V
–
0V
: Commutating Capacitor Inputs. These
U
W
+
to C2
1.4V
–
. To maintain
+
t
and V
HLD
–
W
– (2V
0V
–
LTC1386 • F01
pins
+
CC
V
V
V
0V
CC
+
–
charge pump efficiency, the capacitor’s effective series
resistance should be less than 2 .
TR IN: EIA/TIA562 Driver Input Pins. Inputs are TTL/
CMOS compatible. The inputs of unused drivers can be left
unconnected since 300k input pull-up resistors to V
included on chip.
TR OUT: Driver Outputs at EIA/TIA562 Voltage Levels.
The driver outputs are protected against ESD to 10kV for
human body model discharges.
RX IN: Receiver Inputs. These pins can be forced to 25V
without damage. The receiver inputs are protected against
ESD to 10kV for human body model discharges. Each
receiver provides 0.4V of hysteresis for noise immunity.
RX OUT: Receiver Outputs with TTL/CMOS Voltage
Levels.
OUTPUT
INPUT
RX
RX
t
LHR
Figure 2. Receiver Propagation Delay Timing
1.7V
0.8V
1.3V
t
HLR
2.4V
CC
LTC1386 • F02
are
V
0V
V
0V
CC
CC