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ADM3202ARNZ 参数 Datasheet PDF下载

ADM3202ARNZ图片预览
型号: ADM3202ARNZ
PDF下载: 下载PDF文件 查看货源
内容描述: 低功耗,3.3 V RS - 232线路驱动器/接收器 [Low Power, 3.3 V, RS-232 Line Drivers/Receivers]
分类和应用: 驱动器
文件页数/大小: 16 页 / 328 K
品牌: AD [ ANALOG DEVICES ]
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Low Power, 3.3 V, RS-232
Line Drivers/Receivers
ADM3202/ADM3222/ADM1385
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)
on RS-232 pins (ADM3202 only)
±8 kV: contact discharge
±15 kV: air gap discharge
FUNCTIONAL BLOCK DIAGRAMS
+3.3V INPUT
C3
0.1µF
6.3V
C4
0.1µF
10V
EIA/TIA-232
OUTPUTS
+
+
CMOS
INPUTS
T1
IN
T2
IN
R1
OUT
R2
OUT
T1
T2
R1
R2
GND
T1
OUT
T2
OUT
R1
IN
R2
IN
CMOS
OUTPUTS
ADM3202
*INTERNAL 5kΩ PULL-DOWN RESISTOR
ON EACH RS-232 INPUT
00071-001
APPLICATIONS
General-purpose RS-232 data link
Portable instruments
Printers, palmtop computers, PDAs
Figure 1.
+3.3V INPUT
0.1µF +
10V
0.1µF +
10V
T1
IN
T2
IN
R1
OUT
R2
OUT
EN
GND
C1+ +3.3V TO +6.6V V
CC
VOLTAGE
C1–
V+
DOUBLER
C2+ +6.6V TO –6.6V
VOLTAGE
C2–
INVERTER
T1
T2
R1
R2
SD
V–
+
C3
0.1µF
6.3V
C4
0.1µF
10V
EIA/TIA-232
OUTPUTS
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. E
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.
CMOS
INPUTS
T1
OUT
T2
OUT
R1
IN
R2
IN
CMOS
OUTPUTS
ADM3222
*INTERNAL 5kΩ PULL-DOWN RESISTOR
ON EACH RS-232 INPUT
00071-002
Figure 2.
+3.3V INPUT
+
0.1µF +
10V
0.1µF +
10V
T1
IN
T2
IN
R1
OUT
R2
OUT
DD
GND
C1+ +3.3V TO +6.6V V
CC
VOLTAGE
C1–
V+
DOUBLER
C2+ +6.6V TO –6.6V
VOLTAGE
C2–
INVERTER
T1
T2
R1
R2
SD
00071-003
V–
+
C4
0.1µF
10V
T1
OUT
T2
OUT
R1
IN
R2
IN
CMOS
INPUTS
CMOS
OUTPUTS
ADM1385
*INTERNAL 5kΩ PULL-DOWN RESISTOR
ON EACH RS-232 INPUT
Figure 3.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 ©1998–2011 Analog Devices, Inc. All rights reserved.
+
+
0.1µF +
10V
C2+ +6.6V TO –6.6V
VOLTAGE
C2–
INVERTER
V–
+
+
0.1µF +
10V
C1+ +3.3V TO +6.6V V
CC
VOLTAGE
C1–
V+
DOUBLER
C5
0.1µF
EIA/TIA-232
INPUTS*
C5
0.1µF
EIA/TIA-232
INPUTS*
C3
0.1µF
10V
C5
0.1µF
EIA/TIA-232
OUTPUTS
EIA/TIA-232
INPUTS*