ADM207E(1998) Просмотр технического описания (PDF) - Analog Devices
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производитель
ADM207E
(Rev.:1998)
(Rev.:1998)
Analog Devices
ADM207E Datasheet PDF : 16 Pages
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a EMI/EMC Compliant, ؎15 kV ESD Protected,
RS-232 Line Drivers/Receivers
ADM206E/ADM207E/ADM208E/ADM211E/ADM213E
FEATURES
Complies with 89/336/EEC EMC Directive
ESD Protection to IEC1000-4-2 (801.2)
؎8 kV: Contact Discharge
؎15 kV: Air-Gap Discharge
؎15 kV: Human Body Model
Fast Transient Burst (EFT) Immunity (IEC1000-4-4)
Low EMI Emissions (EN55022)
Eliminates Costly TranZorbs*
460 kbits/s Data Rate Guaranteed
Single +5 V Power Supply
Shutdown Mode 1 W
Plug-In Upgrade for MAX2xxE
Space Saving TSSOP Package Available
FUNCTIONAL BLOCK DIAGRAM
0.1F
10V
0.1F
10V
+5V INPUT
12 C1+ +5V TO +10V
VOLTAGE
VCC 11
14 C1– DOUBLER V+ 13
0.1F
6.3V
15 C2+ +10V TO –10V V– 17
VOLTAGE
16 C2– INVERTER
0.1F
10V
0.1F
CMOS
INPUTS*
T1IN
T2IN
T3IN
T4IN
R1OUT
7 T1
6
T2
20
T3
21
T4
8
R1
2
T1OUT
3
T2OUT EIA/TIA-232
1
T3OUT OUTPUTS
28
T4OUT
9
R1IN
APPLICATIONS
Laptop Computers
Notebook Computers
Printers
Peripherals
Modems
GENERAL DESCRIPTION
The ADM2xxE is a family of robust RS-232 and V.28 interface
devices that operates from a single +5 V power supply. These
products are suitable for operation in harsh electrical environ-
ments and are compliant with the EU directive on EMC (89/336/
EEC). The level of emissions and immunity are both in compli-
ance. EM immunity includes ESD protection in excess of ±15 kV
on all I-O lines (1000-4-2), Fast Transient Burst protection (1000-
4-4) and Radiated Immunity (1000-4-3). EM emissions include
radiated and conducted emissions as required by Information
Technology Equipment EN55022, CISPR22.
All devices fully conform to the EIA-232E and CCITT V.28
specifications and operate at data rates up to 230 kbps.
Shutdown and Enable control pins are provided on some of the
products. Please refer to Table I.
R2OUT
5
CMOS
OUTPUTS
R3OUT
26
R4OUT
22
R2
R3
R4
4
R2IN
27
R3IN
EIA/TIA-232
INPUTS**
23 R4IN
R5OUT
19
R5 18 R5IN
EN (ADM211E)
EN (ADM213E)
24
ADM211E 25
GND ADM213E
SHDN (ADM211E)
SHDN (ADM213E)
10
NOTES:
* INTERNAL 400k⍀ PULL-UP RESISTOR ON EACH CMOS INPUT
** INTERNAL 5k⍀ PULL-DOWN RESISTOR ON EACH RS-232 INPUT
charge pump, all transmitters, and three of the five receivers are
disabled. The remaining two receivers remain active thereby
allowing monitoring of peripheral devices. This feature allows
the device to be shut down until a peripheral device begins com-
munication. The active receivers can alert the processor which
can then take the ADM213E out of the shutdown mode.
Operating from a single +5 V supply, four external 0.1 µF
capacitors are required.
The ADM207E and ADM208E are available in 24-lead DIP,
SO, SSOP and TSSOP packages. The ADM211E and ADM213E
are available in 28-lead SO, SSOP and TSSOP packages.
The shutdown function on the ADM211E disables the charge
pump and all transmitters and receivers. On the ADM213E the
All products are backward compatible with earlier ADM2xx
products facilitating easy upgrading of older designs.
*TranZorb is a registered trademark of General Semiconductor Industries, Inc.
Table I. Selection Table
Model
Supply Voltage
ADM206E
ADM207E
ADM208E
ADM211E
ADM213E
+5 V
+5 V
+5 V
+5 V
+5 V
*Two receivers active.
Drivers
4
5
4
4
4
Receivers ESD Protection Shutdown
3
± 15 kV
3
± 15 kV
4
± 15 kV
5
± 15 kV
5
± 15 kV
Yes
No
No
Yes
Yes (SD)*
Enable
Yes
No
No
Yes
Yes (EN)
Packages
R-24
N, R, RS, RU-24
N, R, RS, RU-24
R, RS, RU-28
R, RS, RU-28
REV. B
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 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 1998
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