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EMI/EMC-Compliant, ±15 kV ESDProtected,

RS-232 Line Drivers/Receivers

ADM206E/ADM207E/ADM208E/ADM211E/ADM213E

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.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700 www.analog.com

FEATURES

Complies with 89/336/EEC EMC directive

ESD protection to IEC 1000-4-2 (801-2)

Contact discharge: ±8 kV

Air-gap discharge: ±15 kV

Human body model: ±15 kV

EFT/burst immunity (IEC 1000-4-4)

Low EMI emissions (EN 55022)

Eliminates need for TransZorb® suppressors

230 kbps data rate guaranteed

Single 5 V power supply

Shutdown mode 1 μW

Plug-in upgrade for MAX2xxE

Space saving TSSOP package available

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 operate from a single 5 V power supply. These pro-

ducts are suitable for operation in harsh electrical environments

and are compliant with the EU directive on electromagnetic

compatibility (EMC) (89/336/EEC). The level of emissions and

immunity are both in compliance. EM immunity includes ESD

protection in excess of ±15 kV on all I/O lines (IEC 1000-4-2),

fast transient burst protection (IEC 100044), and radiated

immunity (IEC 1000-4-3). EM emissions include radiated and

conducted emissions as required by Information Technology

Equipment EN 55022, CISPR 22.

All devices fully conform to the EIA-232-E and CCITT V.28

specifications and operate at data rates up to 230 kbps. Shut-

down and enable control pins are provided on some of the

products (see

Table 1).

The shutdown function on the ADM211E disables the charge

pump and all transmitters and receivers. On the ADM213E the

CONNECTION DIAGRAM

0.1µF

6.3V

0.1µF

INPUT

0.1µF

10V

0.1µF

10V

0.1µF

10V

GND

ADM211E/

ADM213E

OUT

SHDN (ADM211E)

SHDN (ADM213E)

TTL/CMOS

INPUTS

TL/CMOS

OUTPUTS

RS-232

OUTPUTS

RS-232

INPUTS

INTERNAL 400kΩ PULL-UP RESISTOR ON EACH TTL/CMOS INPUT.

INTERNAL 5kΩ PULL-DOWN RESISTOR ON EACH RS-232 INPUT.

C1+

C1–

C2+

C2–

V+

V–

EN (ADM211E)

EN (ADM213E)

0068-001

+5V TO +10V

VOLTAGE

DOUBLER

+10V TO –10V

VOLTAGE

INVERTER

Figure 1.

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

communication. 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 PDIP, SSOP,

available in 28-lead SSOP, TSSOP, and SOIC_W packages. All

products are backward compatible with earlier ADM2xx products,

facilitating easy upgrading of older designs.

Table 1. Selection Table

Model Supply Voltage Drivers Receivers ESD Protection Shutdown Enable Packages

ADM206E 5 V 4 3 ±15 kV Yes Yes RW-24

ADM207E 5 V 5 3 ±15 kV No No N-24-1, RW-24, RS-24, RU-24

ADM208E 5 V 4 4 ±15 kV No No N-24-1, RW-24, RS-24, RU-24

ADM211E 5 V 4 5 ±15 kV Yes Yes RW-28, RS-28, RU-28

ADM213E 5 V 4 5 ±15 kV

Yes (

SHDN

)

Yes (EN) RW-28, RS-28, RU-28

Two receivers active.

ADM206E/ADM207E/ADM208E/ADM211E/ADM213E

Rev. E | Page 2 of 20

TABLE OF CONTENTS

Features .............................................................................................. 1

Applications....................................................................................... 1

General Description......................................................................... 1

Connection Diagram ....................................................................... 1

Revision History ............................................................................... 2

Specifications..................................................................................... 3

Absolute Maximum Ratings............................................................ 4

ESD Caution.................................................................................. 4

Pin Configurations and Function Descriptions ........................... 5

Typical Performance Characteristics ............................................. 8

Theory of Operation ...................................................................... 10

Circuit Description..................................................................... 10

Enable and Shutdown ................................................................ 10

High Baud Rate........................................................................... 11

ESD/EFT Transient Protection Scheme .................................. 11

ESD Testing (IEC 100042) ..................................................... 11

EFT/Burst Testing (IEC 100044)........................................... 12

IEC 1000-4-3 Radiated Immunity ........................................... 13

Emissions/Interference.............................................................. 14

Conducted Emissions................................................................ 14

Radiated Emissions.................................................................... 14

Outline Dimensions ....................................................................... 16

Ordering Guide .......................................................................... 19

REVISION HISTORY

9/06—Rev. D to Rev. E

Updated Format..................................................................Universal

Changes to Figure 1 and Table 1..................................................... 1

Changes to Table 2............................................................................ 3

Changes to Figure 2, Figure 3, and Figure 5.................................. 5

Changes to Figure 7 and Figure 9................................................... 6

Changes to Figure 11........................................................................ 7

Changes to Figure 17........................................................................ 8

Updated Outline Dimensions....................................................... 16

Changes to Ordering Guide .......................................................... 19

4/05—Rev. C to Rev. D

Changes to Specifications Section.................................................. 2

Changes to Ordering Guide ............................................................ 4

Updated Outline Dimensions......................................................... 6

3/01—Rev. B to Rev. C

Changes to Features Section ............................................................1

Changes to Specifications Table ......................................................2

Changes to Absolute Maximum Ratings........................................3

Changes to Figure 6 ..........................................................................5

Changes to Typical Performance Characteristics Section ...... 7, 8

Changes to Table V......................................................................... 11

ADM206E/ADM207E/ADM208E/ADM211E/ADM213E

Rev. E | Page 3 of 20

SPECIFICATIONS

= 5.0 V ± 10%, C1 to C4 = 0.1 μF. All specifications T

MIN

to T

MAX

, unless otherwise noted.

Table 2.

Parameter Min Typ Max Unit Test Conditions/Comments

DC CHARACTERISTICS

Operating Voltage Range 4.5 5.0 5.5 V

Power Supply Current 3.5 13 mA No load

SHUTDOWN SUPPLY CURRENT 0.2 10 μA

LOGIC

Input Pull-Up Current 10 25 μA T

= GND

Input Logic Threshold Low, V

INL

0.8 V

, EN, EN, SHDN, SHDN

Input Logic Threshold High, V

INH

2.0 V T

Input Logic Threshold High, V

INH

2.0 V

EN,

EN, SHDN, SHDN

TTL/CMOS Output Voltage Low, V

0.4 V I

OUT

= 1.6 mA

TTL/CMOS Output Voltage High, V

3.5 V I

OUT

= −40 μA

TTL/CMOS Output Leakage Current +0.05 ±10 μA

EN = V

, EN = GND, 0 V ≤ R

OUT

≤ V

RS-232 RECEIVER

Input Voltage Range

−30 +30 V

Input Threshold Low 0.8 1.3 V

Input Threshold High 2.0 2.4 V

Input Hysteresis 0.65 V

Input Resistance 3 5 7 kΩ T

= 0°C to 85°C

RS-232 TRANSMITTER

Output Voltage Swing ±5.0 ±9.0 V All transmitter outputs loaded with 3 kΩ to ground

Output Resistance 300 Ω V

= 0 V, V

OUT

= ±2 V

Output Short-Circuit Current ±6 ±20 ±60 mA

TIMING CHARACTERISTICS

Maximum Data Rate 230 kbps R

= 3 kΩ to 7 kΩ, C

= 50 pF to 2500 pF

Receiver Propagation Delay, TPHL, TPLH 0.4 2 μs C

= 150 pF

Receiver Output Enable Time, t

120 ns

Receiver Output Disable Time, t

120 ns

Transmitter Propagation Delay, TPHL, TPLH 1 μs R

= 3 kΩ, C

= 2500 pF

Transition Region Slew Rate 8 V/μs

= 3 kΩ, C

= 50 pF to 2500 pF, measured from

+3 V to −3 V or −3 V to +3 V

EM IMMUNITY

ESD Protection (I/O Pins) ±15 kV Human body model

±15 kV IEC 1000-4-2 air-gap discharge

±8 kV IEC 1000-4-2 contact discharge

Radiated Immunity 10 V/m IEC 1000-4-3

Guaranteed by design.

Table 3. ADM211E Truth Table

SHDN

Status T

OUT

1:4 R

OUT

1:5

0 0 Normal operation Enabled Enabled

0 1 Normal operation Enabled Disabled

1 X

Shutdown Disabled Disabled

X = don’t care.

Table 4. ADM213E Truth Table

SHDN

EN Status T

OUT

1:4 R

OUT

1:3 R

OUT

4:5

0 0 Shutdown Disabled Disabled Disabled

0 1 Shutdown Disabled Disabled Enabled

1 0 Normal operation Enabled Disabled Disabled

1 1 Normal operation Enabled Enabled Enabled

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