LTC2801IDE#TRPBF Linear Technology, LTC2801IDE#TRPBF Datasheet - Page 8

• Manufacturer Part Number: LTC2801IDE#TRPBF
• Description: IC TXRX RS232 12-DFN
• Manufacturer: Linear Technology
• Type: Transceiverr

Specifications of LTC2801IDE#TRPBF

• Number Of Drivers/receivers: 1/1
• Protocol: RS232
• Voltage - Supply: 1.8 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: 12-DFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Pin FunctionS
LTC2801/LTC2802/
LTC2803/LTC2804
PIN NAME
V
V
V
SW
GND
CAP
V
TIN (T1IN, T2IN)
TOUT (T1OUT, T2OUT)
RIN (R1IN, R2IN)
ROUT (R1OUT, R2OUT)
PS
MODE
ON/OFF
*Backside thermal pad
Mode control
Table 1. LTC2801, LTC2802, LTC2803, LTC2804
MODE NAME
SHUTDOWN
RECEIVER(S) ACTIVE
DRIVER(S) DISABLED
NORMAL
Table 2. LTC2803-1, LTC2804-1
MODE NAME
SHUTDOWN
NORMAL
*Typical currents for static drivers. Normal mode currents are for unloaded outputs.

CC
DD
EE
L
2801
2802
13*
10
11
12
—
3
4
5
6
7
2
1
8
9
PS
H
H
L
L
PIN NUMBER
14, 13
16, 15
2803
2804
17*
3, 4
1, 2
ON/OFF
12
10
11
—
5
6
7
8
9
H
L
2803-1
2804-1
14, 13
16, 15
MODE
3, 4
1, 2
10
12
—
—
11
5
6
9
7
8
L
H
L
H
COMMENTS
Input Supply (1.8V-5.5V). Bypass to GND with a 1µF capacitor.
Generated Positive Supply Voltage for RS-232 Driver (7V). Connect a 1µF capacitor between
V
Generated Negative Supply Voltage for RS-232 Driver (–6.3V). Connect a 1µF capacitor
between V
Switch Pin. Connect a 10µH inductor between SW and V
Ground.
Charge Pump Capacitor for Generated Negative Supply Voltage. Connect a 220nF capacitor
between CAP and SW.
Logic Supply (1.8V-5.5V) for the receiver outputs, driver inputs, and control inputs. This pin
should be bypassed to GND with a 220nF capacitor if it’s not tied to V
Driver Input(s), referenced to V
RS-232 Driver Output(s).
RS-232 Receiver Input(s). Includes internal 5kΩ termination resistor(s).
Receiver Output(s), referenced to V
high impedance in Shutdown mode, allowing data line sharing.
Power Supply control pin, referenced to V
Mode control pin, referenced to V
Transceiver enable pin, referenced to V
places both driver and receiver outputs in a high impedance state.
DD
and GND.
OUTPUT(S)
RECEIVER
RECEIVER
OUTPUTS
EE
HI-Z
HI-Z
ON
ON
ON
ON
and GND.
DC-DC
DC-DC
OFF
OFF
OFF
ON
ON
ON
L
.
L
. See Table 1 for functionality.
L
. Output is short-circuit protected to GND/V
L
. A logic low puts the device in Shutdown mode and
L
. Enables the integrated DC-DC converter.
OUTPUT(S)
OUTPUTS
DRIVER
DRIVER
HI-Z
HI-Z
HI-Z
HI-Z
ON
ON
CC
.
2.1mA
2.3mA
2.3mA
I
I
VCC
1µA
1µA
VCC
1µA
CC
*
*
.
CC
/V
80µA OR
80µA OR
L
150µA
150µA
150µA
15µA
, and is
I
I
1µA
1µA
VL
VL
*
*
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