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ADM207EAN Scheda tecnica(PDF) 1 Page - Analog Devices

Il numero della parte ADM207EAN
Spiegazioni elettronici  EMI/EMC Compliant, -15 kV ESD Protected, RS-232 Line Drivers/Receivers
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Produttore elettronici  AD [Analog Devices]
Homepage  http://www.analog.com
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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.
a EMI/EMCCompliant, 15kVESDProtected,
RS-232 Line Drivers/Receivers
FUNCTIONAL BLOCK DIAGRAM
C1+
C1–
C2+
C2–
VCC
0.1 F
10V
0.1 F
10V
V+
V–
+5V TO +10V
VOLTAGE
DOUBLER
14
12
13
+5V INPUT
0.1 F
6.3V
+10V TO –10V
VOLTAGE
INVERTER
17
0.1 F
10V
T1
2
7
T1OUT
T1IN
11
0.1 F
3
6
T2OUT
T2IN
T3
1
20
T3OUT
T3IN
T4
28
21
T4OUT
T4IN
T2
8
9
R3
R4
R5
25
27
23
18
4
19
26
22
24
5
R1
R2
ADM211E
ADM213E
R1OUT
R2OUT
R3OUT
R4OUT
R5OUT
R1IN
R2IN
R3IN
R4IN
R5IN
SHDN (ADM211E)
SHDN (ADM213E)
EN (ADM211E)
EN (ADM213E)
CMOS
INPUTS*
CMOS
OUTPUTS
EIA/TIA-232
OUTPUTS
EIA/TIA-232
INPUTS
**
GND
10
NOTES:
* INTERNAL 400k
PULL-UP RESISTOR ON EACH CMOS INPUT
** INTERNAL 5k
PULL-DOWN RESISTOR ON EACH RS-232 INPUT
15
16
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
APPLICATIONS
Laptop Computers
Notebook Computers
Printers
Peripherals
Modems
Table I. Selection Table
Model
Supply Voltage
Drivers
Receivers
ESD Protection
Shutdown
Enable
Packages
ADM206E
+5 V
4
3
±15 kV
Yes
Yes
R-24
ADM207E
+5 V
5
3
±15 kV
No
No
N, R, RS, RU-24
ADM208E
+5 V
4
4
±15 kV
No
No
N, R, RS, RU-24
ADM211E
+5 V
4
5
±15 kV
Yes
Yes
R, RS, RU-28
ADM213E
+5 V
4
5
±15 kV
Yes (
SD)*
Yes (EN)
R, RS, RU-28
*Two receivers active.
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.
The shutdown function on the ADM211E disables the charge
pump and all transmitters and receivers. On the ADM213E the
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.
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.
ADM206E/ADM207E/ADM208E/ADM211E/ADM213E
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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