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ADM202JRN 参数 Datasheet PDF下载

ADM202JRN图片预览
型号: ADM202JRN
PDF下载: 下载PDF文件 查看货源
内容描述: 高速,+ 5 V, 0.1 uF的CMOS RS - 232驱动器/接收器 [High Speed, +5 V, 0.1 uF CMOS RS-232 Driver/Receivers]
分类和应用: 驱动器
文件页数/大小: 6 页 / 308 K
品牌: AD [ ANALOG DEVICES ]
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a
FEATURES
120 kB Transmission Rate
ADM202: Small (0.1 F) Charge Pump Capacitors
ADM203: No External Capacitors Required
Single 5 V Power Supply
Meets EIA-232-E and V.28 Specifications
Two Drivers and Two Receivers
On-Board DC-DC Converters
9 V Output Swing with +5 V Supply
Low Power BiCMOS: 2.0 mA I
CC
30 V Receiver Input Levels
APPLICATIONS
Computers
Peripherals
Modems
Printers
Instruments
High Speed, +5 V, 0.1 F
CMOS RS-232 Driver/Receivers
ADM202/ADM203
FUNCTIONAL BLOCK DIAGRAMS
+5V INPUT
0.1µF
6.3V
1 C1+
3 C1–
4 C2+
5 C2–
V
CC
16
V+ 2
0.1µF
6.3V
+5V TO +10V
VOLTAGE
DOUBLER
+10V TO –10V
VOLTAGE
INVERTER
0.1µF
6.3V
0.1µF
16V
V–
6
0.1µF
16V
TTL/CMOS
INPUTS
*
T1
IN
T2
IN
R1
OUT
11
10
T1
14
T1
OUT
T2
OUT
R1
IN
R2
IN
RS-232
OUTPUTS
T2
7
12
R1
13
TTL/CMOS
OUTPUTS
R2
OUT
9
GND
15
+5V INPUT
R2
8
RS-232
INPUTS
**
ADM202
GENERAL DESCRIPTION
7
V
CC
TTL/CMOS
INPUTS
*
T1
IN
T2
IN
R1
OUT
TTL/CMOS
OUTPUTS
R2
OUT
DO NOT MAKE
CONNECTIONS TO
THESE PINS
INTERNAL
–10V POWER
SUPPLY
INTERNAL
+10V POWER
SUPPLY
20
8
C1+
C2+ 11
13 C1–
12 V–
17 V–
14 V+
C2+ 15
R2
19
R2
IN
2
T1
5
T1
OUT
T2
OUT
R1
IN
RS-232
OUTPUTS
The ADM202/ADM203 is a two-channel RS-232 line driver/
receiver pair designed to operate from a single +5 V power sup-
ply. A highly efficient on-chip charge pump design permits
RS-232 levels to be developed using charge pump capacitors as
small as 0.1
µF.
The capacitors are internal to the package on
the ADM203 so no external capacitors are required. These con-
verters generate
±
10 V RS-232 output levels.
The ADM202/ADM203 meets or exceeds the EIA-232-E and
V.28 specifications. Fast driver slew rates permit operation up to
120 kB while high drive currents allows for extended cable
lengths.
An epitaxial BiCMOS construction minimizes power consump-
tion to 10 mW and also guards against latch-up. Overvoltage
protection is provided allowing the receiver inputs to withstand
continuous voltages in excess of
±
30 V. In addition, all pins
contain ESD protection to levels greater than 2 kV.
The ADM202 is available in 16-lead DIP and both narrow and
wide SOIC packages. The ADM203 is available in a 20-pin DIP
package.
1
T2
18
3
R1
4
RS-232
INPUTS
**
ADM203
GND
6
GND
9
C2– 10
C2– 16
*
INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT
**INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT
REV. 0
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703