ADM3202ARNZ Analog Devices, ADM3202ARNZ Datasheet
ADM3202ARNZ
Manufacturer Part Number
ADM3202ARNZ
Description
Manufacturer
Analog Devices
Specifications of ADM3202ARNZ
Dc
0730
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FEATURES
460 kbps data rate
Specified at 3.3 V
Meets EIA-232E specifications
0.1 μF charge pump capacitors
Low power shutdown (ADM3222 and ADM1385)
PDIP, SOIC_N, SOIC_W, SSOP, and TSSOP options
Upgrade for MAX3222/MAX3232 and LTC1385
ESD protection to IEC 1000-4-2 (801.2)
±8 kV: contact discharge
±15 kV: air gap discharge
APPLICATIONS
General-purpose RS-232 data link
Portable instruments
Printers, palmtop computers, PDAs
GENERAL DESCRIPTION
The ADM3202/ADM3222/ADM1385 transceivers are high
speed, 2-channel RS-232/V.28 interface devices that operate
from a single 3.3 V power supply. Low power consumption and
a shutdown facility (ADM3222/ADM1385) make them ideal for
battery-powered portable instruments.
The ADM3202/ADM3222/ADM1385 parts conform to the
EIA-232E and CCITT V.28 specifications and operate at data
rates up to 460 kbps.
Four external 0.1 μF charge pump capacitors are used for the
voltage doubler/inverter, permitting operation from a single
3.3 V supply.
The ADM3222 contains additional enable and shutdown
circuitry. The EN input can be used to three-state the receiver
outputs. The SD input is used to power down the charge pump
and transmitter outputs, reducing the quiescent current to less
than 0.5 μA. The receivers remain enabled during shutdown
unless disabled using EN .
The ADM1385 contains a driver disable mode and a complete
shutdown mode.
The ADM3202 is available in a 16-lead PDIP, SOIC_W, and
SOIC_N, as well as a space-saving 16-lead TSSOP. The ADM3222
is available in 18-lead PDIP and SOIC_W and in 20-lead SSOP
and TSSOP. The ADM1385 is available in a 20-lead SSOP,
which is pin-compatible with the LTC1385 CG.
Rev. D
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
on RS-232 pins (ADM3202 only)
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
ADM3202/ADM3222/ADM1385
OUTPUTS
OUTPUTS
OUTPUTS
INPUTS
INPUTS
INPUTS
CMOS
CMOS
CMOS
CMOS
CMOS
CMOS
Low Power, 3.3 V, RS-232
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
0.1µF
R1
R2
FUNCTIONAL BLOCK DIAGRAMS
R1
R2
R1
R2
10V
10V
10V
10V
10V
10V
T1
T2
OUT
OUT
T1
T2
T1
T2
OUT
OUT
OUT
OUT
IN
IN
+
+
IN
IN
IN
IN
Line Drivers/Receivers
+
+
+
+
DD
EN
GND
C1+
C1–
C2+
C2–
GND
GND
C1+
C1–
C2+
C2–
C1+
C1–
C2+
C2–
T1
T1
T1
©2006 Analog Devices, Inc. All rights reserved.
+3.3V TO +6.6V
+6.6V TO –6.6V
+3.3V TO +6.6V
+6.6V TO –6.6V
+3.3V TO +6.6V
+6.6V TO –6.6V
ADM3202
INVERTER
DOUBLER
VOLTAGE
VOLTAGE
T2
DOUBLER
INVERTER
DOUBLER
INVERTER
VOLTAGE
VOLTAGE
T2
VOLTAGE
VOLTAGE
T2
Figure 1.
Figure 2.
*INTERNAL 5kΩ PULL-DOWN RESISTOR
Figure 3.
ADM1385
ON EACH RS-232 INPUT
*INTERNAL 5kΩ PULL-DOWN RESISTOR
*INTERNAL 5kΩ PULL-DOWN RESISTOR
ADM3222
ON EACH RS-232 INPUT
ON EACH RS-232 INPUT
R1
R1
R1
R2
R2
R2
V
V
V
V+
CC
V–
CC
V+
V–
CC
V+
V–
+3.3V INPUT
+3.3V INPUT
+3.3V INPUT
SD
SD
+
C4
0.1µF
10V
T1
T2
R1
R2
+
+
T1
T2
R1
R2
+
+
T1
T2
R1
R2
C3
0.1µF
6.3V
C3
0.1µF
6.3V
C4
0.1µF
10V
C4
0.1µF
10V
OUT
OUT
IN
IN
OUT
OUT
OUT
OUT
IN
IN
IN
IN
www.analog.com
+
C3
0.1µF
6.3V
EIA/TIA-232
OUTPUTS
EIA/TIA-232
INPUTS*
EIA/TIA-232
OUTPUTS
EIA/TIA-232
INPUTS*
EIA/TIA-232
OUTPUTS
EIA/TIA-232
INPUTS*
+
+
C5
0.1µF
C5
0.1µF
+
C5
0.1µF
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