|
|
PDF ADM222 Data sheet ( Hoja de datos )
| Número de pieza | ADM222 | |
| Descripción | CMOS RS-232 Drivers/Receivers | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de ADM222 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
|
No Preview Available !
a
High-Speed, 5 V, 0.1 F
CMOS RS-232 Drivers/Receivers
ADM222/ADM232A/ADM242
FEATURES
200 kB/s Transmission Rate
Small (0.1 F) Charge Pump Capacitors
Single 5 V Power Supply
Meets All 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
؎30 V Receiver Input Levels
Pin Compatible with MAX222/MAX232A/MAX242
APPLICATIONS
Computers
Peripherals
Modems
Printers
Instruments
GENERAL DESCRIPTION
The ADM222, ADM232A, ADM242 are a family of high-speed
RS-232 line drivers/receivers offering transmission rates up to
200 kB/s. Operating from a single 5 V power supply, a highly
efficient on-chip charge pump using small (0.1 µF) external
capacitors allows RS-232 bipolar levels to be developed. Two
RS-232 drivers and two RS-232 receivers are provided on
each device.
The devices are fabricated on BiCMOS, an advanced mixed
technology process that combines low power CMOS with high-
speed bipolar circuitry. This allows for transmission rates up to
200 kB/s, yet minimizes the quiescent power supply current to
under 5 mA.
The ADM232A is a pin-compatible, high-speed upgrade for the
AD232 and for the ADM232L. It is available in 16-lead DIP
and in both narrow and wide surface-mount (SOIC) packages.
The ADM222 contains an additional shutdown (SHDN) func-
tion that may be used to disable the device, thereby reducing the
supply current to 0.1 µA. During shutdown, all transmit/receive
FUNCTIONAL BLOCK DIAGRAM
5V INPUT
0.1F
0.1F
0.1F
C1+
VCC
+5V TO +10V
VOLTAGE DOUBLER
C1–
V+
C2+ +5V TO –10V
VOLTAGE INVERTER V–
C2–
0.1F
0.1F
TTL/CMOS
INPUTS*
T1IN
T2IN
TTL/CMOS
OUTPUTS
R1OUT
R2OUT
T1 T1OUT
RS-232
OUTPUTS
T2 T2OUT
R1 R1IN
RS-232
INPUTS**
R2 R2IN
ADM2xx
GND
EN
SHDN
(ADM242)
(ADM222, ADM242)
* INTERNAL 400k⍀ PULL-UP RESISTOR
ON EACH TTL/CMOS INPUT
** INTERNAL 5k⍀ PULL-DOWN RESISTOR
ON EACH RS-232 INPUT
functions are disabled. The ADM222 is available in 18-lead
DIP and in a wide surface-mount (SOIC) package.
The ADM242 combines both shutdown (SHDN) and enable
(EN) functions. The shutdown function reduces the supply
current to 0.1 mA. During shutdown, the transmitters are dis-
abled but the receivers continue to operate normally. The
enable function allows the receiver outputs to be disabled
thereby facilitating sharing a common bus. The ADM242 is
available in 18-lead DIP and in a wide surface-mount (SOIC)
package.
REV. C
Document Feedback
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: 781.329.4700
©2016 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
1 page  
C1+ 1
V+ 2
16 VCC
15 GND
C1– 3
14 T1OUT
C2+ 4 ADM232A 13 R1IN
TOP VIEW
C2– 5 (Not to Scale) 12 R1OUT
V– 6
11 T1IN
T2OUT 7
10 T2IN
R2IN 8
9 R2OUT
Figure 9. ADM232A DIP/SOIC Pin Configuration
ADM222/ADM232A/ADM242
EN 1
18 SHDN
C1+ 2
V+ 3
17 VCC
16 GND
C1– 4 ADM242 15 T1OUT
C2+ 5 TOP VIEW 14 R1IN
(Not to Scale)
C2– 6
13 R1OUT
V– 7
12 T1IN
T2OUT 8
11 T2IN
R2IN 9
10 R2OUT
Figure 11. ADM242 DIP/SOIC Pin Configuration
5V INPUT
C1
0.1F
C2
0.1F
C5
0.1F
6.3V
16
1 C1+
VCC
3
+5V TO +10V
VOLTAGE DOUBLER
V+
2
C1–
4
C2+ +5V TO –10V
VOLTAGE INVERTER V–
6
5 C2–
C3
0.1F
C4
0.1F
TTL/CMOS
INPUTS*
T1IN
T2IN
11
10
TTL/CMOS
OUTPUTS
12
R1OUT
9
R2OUT
T1
T2
R1
R2
14
T1OUT
RS-232
7
OUTPUTS
T2OUT
13
R1IN
RS-232
8 INPUTS**
R2IN
ADM232A
GND
15 * INTERNAL 400k⍀ PULL-UP RESISTOR
ON EACH TTL/CMOS INPUT
** INTERNAL 5k⍀ PULL-DOWN RESISTOR
ON EACH RS-232 INPUT
Figure 10. ADM232A Typical Operating Circuit
5V INPUT
C1
0.1F
C2
0.1F
C5
0.1F
6.3V
17
2 C1+
VCC
4
+5V TO +10V
VOLTAGE DOUBLER
V+
3
C1–
5
C2+ +5V TO –10V
VOLTAGE INVERTER V–
7
6 C2–
C3
0.1F
C4
0.1F
TTL/CMOS
INPUTS*
T1IN
T2IN
12
11
TTL/CMOS
OUTPUTS
R1OUT
R2OUT
13
10
T1
T2
R1
R2
15
T1OUT
RS-232
8
OUTPUTS
T2OUT
14
R1IN
RS-232
9 INPUTS**
R2IN
EN 1
ADM242
GND
18 SHDN
16 * INTERNAL 400k⍀ PULL-UP RESISTOR
ON EACH TTL/CMOS INPUT
** INTERNAL 5k⍀ PULL-DOWN RESISTOR
ON EACH RS-232 INPUT
Figure 12. ADM242 Typical Operating Circuit
REV. C
–5–
5 Page 
Data Sheet
REVISION HISTORY
9/2016—Rev. B to Rev. C
Changes to TPC2 Figure.................................................................. 6
Updated Outline Dimensions ......................................................... 8
Changes to Ordering Guide ............................................................ 8
11/2010—Rev. A to Rev. B
Updated Outline Dimensions ......................................................... 9
Changes to Ordering Guide .......................................................... 10
ADM222/ADM232A/ADM242
©2016 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
D01213-0-9/16(C)
Rev. C | Page 11 of 11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet ADM222.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ADM2209E | Dual RS-232 Port | Analog Devices |
| ADM222 | CMOS RS-232 Drivers/Receivers | Analog Devices |
| ADM223 | CMOS RS-232 Drivers/Receivers | Analog Devices |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |