Analog Devices ADM2209E Datasheet

EMI-/EMC-Compliant ⴞ15 kV ESD Protected,

+

T1

R1

OUT

AR1

IN

A

T2

R2

OUT

A

R2

IN

A

T3

T3

OUT

A

T3

IN

A

R1

T1INAT1

OUT

A

R5

R4

R3

R3

OUT

A

R4

OUT

A

R5

OUT

A

R3INA

R4

IN

A

R5

IN

A

R2

T2INA

T2

OUT

A

V

DD

T1

R1

OUT

B

R1INB

T2

R2

OUT

B

R2

IN

B

T3

T3

OUT

B

T3

IN

B

R1

T1INB

T1

OUT

B

R5

R4

R3

R3

OUT

B

R4

OUT

B

R5

OUT

B

R3INB

R4

IN

B

R5

IN

B

R2

T2INB

T2

OUT

B

GND

V–

STBY

C+

C–

0.1mF

0.1mF

CHARGE PUMP

VOLTAGE INVERTER

CMOS

INPUTS

CMOS

OUTPUTS

EIA/TIA-232
OUTPUTS

EIA/TIA-232
INPUTS

CMOS

INPUTS

CMOS

OUTPUTS

EIA/TIA-232
OUTPUTS

EIA/TIA-232
INPUTS

ADM2209E

0.1mF 0.1mF

3.3V/5V

+12V

+

a

FEATURES
Two Complete Serial Ports, Six Drivers and Ten Receivers
Operates with 3 V or 5 V Logic
Low Power CMOS: <5 mA Operation
Low Standby Current: 100 ␮A
460 kbit/s Data Rate Guaranteed Laplink

0.1 ␮F Charge Pump Capacitors
Single +12 V Power Supply
+3.3 V/+5 V Standby Supply
One Receiver on Each Port Active in Standby
Complies with 89/336/EEC EMC Directive
ESD Protection to IEC1000-4-2 (801.2)

ⴞ8 kV: Contact Discharge
ⴞ15 kV: Air-Gap Discharge
ⴞ15 kV: Human Body Model

Electrical Fast Transient (EFT) Immunity (IEC1000-4-4)
Low EMI Emissions (EN55022)
Eliminates Costly TransZorbs
Conforms to EIA/TIA-232-E Specifications
Fail-Safe Receiver Outputs

APPLICATIONS
Personal Computers
Printers
Peripherals
Modems

GENERAL DESCRIPTION

The ADM2209E is a complete, dual RS-232 port on a single
chip, containing six drivers and ten receivers and fully meeting
EIA-232 and V.28 specifications. The device features an on­board dc-to-dc converter to generate a –12 V power rail, elimi­nating the need for a negative power supply.

The ADM2209E is suitable for operation in harsh electrical
environments and is compliant with the EU directive on EMC
(89/336/EEC). Both the level of emissions and immunity are in
compliance. EM immunity includes ESD protection in excess of

±15 kV on all I-O lines (1000-4-2), Electrical Fast Transient

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.

The ADM2209E conforms to the EIA-232E and CCITT V.28
specifications and operates at data rates up to 460 kbps.

Laplink is a registered trademark of Traveling Software, Inc.
TransZorb is a registered trademark of General Semiconductor Industries, Inc.

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.

®

®

-Compatible

Dual RS-232 Port with Standby

ADM2209E

FUNCTIONAL BLOCK DIAGRAM

In standby mode, one receiver on each port (R5) remains active
to allow monitoring of peripheral devices while the rest of the
system is in power-saving mode. This feature allows the
ADM2209E to wake up the system when a peripheral device
begins communication.

The ADM2209E is available in a 38-lead TSSOP package.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone] World Wide Web Site: http://www.analog.com
Fax: [phone] © Analog Devices, Inc., 1999

ADM2209E–SPECIFICATIONS

(VDD = 10.8 V to 13.2 V, V
specifications T

MIN

to T

= 3.3 V ⴞ 5% or 5 V ⴞ 10%, C1 = C2 = 0.1 ␮F. All

STBY

unless otherwise noted.)

MAX

Parameter Min Typ1Max Units Test Conditions/Comments

OPERATING CONDITIONS

Operating Voltage Range, V
Standby Voltage Range, V

Power Supply Current

V

DD

DD

STBY

2

+10.8 +12 +13.2 V
+3.15 +5.5 V

5 mA No Load, All Driver Inputs at 0.8 V or 2 V,

All Receiver Inputs at +15 V or –15 V

V

Supply Current 100 200 µA No Load, All Tx IN at V

STBY

STBY

or Open

TRANSMITTER (DRIVER) CMOS INPUTS

Input Pull-Up Current 10 25 µA Transmitter Input at GND

High Level Input Voltage, V
Low Level Input Voltage, V

INH

INL

2.1 V

0.4 V

TRANSMITTER (DRIVER) EIA-232 OUTPUTS

Output Voltage Swing ±5.0 ±9.0 V All Transmitter Outputs Loaded with 3 kΩ to GND

Output Short-Circuit Current, I

OS

±5 ±15 ±30 mA V

Output Resistance 300 Ω V

= 0 V, VIN = 0.8 V

O

= 0 V, V

DD

STBY

3

= 0 V, V

= ±2 V

IN

RECEIVER EIA-232 INPUTS

Input Voltage Range –15 +15 V
Input Low Threshold, V

TL

Input High Threshold, V

TH

0.4 1.45 V

1.7 2.4 V
Input Hysteresis 0.25 V
Input Resistance, R

RECEIVER OUTPUTS

High Level Output Voltage, V
Low Level Output Voltage, V

IN

4

OH

OL

Output Leakage Current (Except R5A, R5B) 0.05 ±5 µAV

DRIVER SWITCHING CHARACTERISTICS

Maximum Data Rate 460 kbps R

Propagation Delay, High to Low, T
Propagation Delay, Low to High, T

PHL

PLH

Transition Region Slew Rate 6 16 V/µsR
Transition Region Slew Rate (5 V) 4 16 V/µsR

357 kΩ VIN = ±15 V

2.4 V I

0.2 0.4 V IOL = +1.6 mA

5

460 kbps R

T

920 kbps R

V

1 µsR
1 µsR

V

= –40 µA

OH

= 0 V

DD

= 3 kΩ to 7 kΩ, C

L

= 3 kΩ to 7 kΩ, C

L

= 0°C to +85°C, 5 V ± 10% Only

A

= 3 kΩ to 7 kΩ, C

L

= 5 V ± 5%, VDD = 12 V ± 5%

STBY

= 3 kΩ, C

L

= 3 kΩ, C

L

= 3 kΩ to 7 kΩ, C

L

= 3 kΩ to 7 kΩ, C

L

= 5 V ± 10% Only. Measured from +3 V

STBY

= 1000 pF (Figures 1 and 2)

L

= 1000 pF (Figures 1 and 2)

L

= 50 pF to 470 pF

L

= 50 pF to 1000 pF,

L

= 50 pF to 470 pF,

L

= 50 pF to 470 pF

L

= 50 pF to 1000 pF,

L

to –3 V or Vice Versa

RECEIVER SWITCHING CHARACTERISTICS

Maximum Data Rate 920 kbps C

460 kbps C

Propagation Delay, R1–R4 0.4 0.75 µsC
Propagation Delay, R5 1 2 µsC

Output Rise Time, t
Output Fall Time, t

r

f

30 ns Figures 3 and 4
30 ns

= 150 pF, V

L

= 150 pF

L

= 150 pF

L

= 150 pF

L

= 5 V ± 5% Only

STBY

ESD AND EMC

ESD Protection (I-O Pins) ±15 kV Human Body Model

±15 kV IEC1000-4-2 Air Discharge
±8 kV IEC1000-4-2 Contact Discharge

ESD Protection (All Other Pins) ±2.5 kV Human Body Model, MIL-STD-883B

EFT Protection (I-O Pins) ±2 kV IEC1000-4-4

EMI Immunity 10 V/m IEC1000-4-3

NOTES

1

All typicals are given for VDD = +12 V, V

2

Current into device pins is defined as positive. Current out-of-device pins is defined as negative. All voltages are referred to ground unless otherwise specified. For
current, minimum and maximum values are specified as an absolute value and the sign is used to indicate direction. For voltage logic levels, the more positive value is
designated as maximum. For example, if –6 V is a maximum, the typical value (–6.8 V) is more negative.

3

Only one driver output shorted at a time.

4

If receiver inputs are unconnected, receiver output is a logic high.

5

Refer to typical curves. Driver output slew rate is measured from the +3.0 V to the –3.0 V level on the output waveform. Slew rate is determined by load capacitance.

Specifications subject to change without notice.

STBY

= 5 V, T

= +25°C.

A

REV. 0–2–

ADM2209E

ABSOLUTE MAXIMUM RATINGS*

(T

= +25°C unless otherwise noted)

A

V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to +7 V

STBY

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +14 V

V

DD

Input Voltages

Driver Inputs Tn
Receiver Inputs Rn

A/B . . . . . . . . . –0.3 V to (V

IN

A/B . . . . . . . . . . . . . . . . . . . . . . ±25 V

IN

STBY

, +0.3 V)

Output Voltages

Driver Outputs Tn
Receiver Outputs Rn

A/B . . . . . . . . . . . . . . . . . . . . . ±15 V

OUT

A/B . . . . –0.3 V to (V

OUT

STBY

, +0.3 V)

Short Circuit Duration

A/B . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Continuous

Tn

OUT

Power Dissipation

RU-38 TSSOP (Derate 12 mW/°C Above +70°C) . . . 1488 mW

Operating Temperature Range

Industrial (A Version) . . . . . . . . . . . . . . . . –40°C to +85°C

Storage Temperature Range . . . . . . . . . . . . –65°C to +150°C

Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . +300°C

ESD Rating (MIL-STD-883B) (I-O Pins) . . . . . . . . . . ±15 kV

ESD Rating (MIL-STD-883B) (Except I-O) . . . . . . . . ±2.5 kV

ESD Rating (IEC1000-4-2 Air) (I-O Pins) . . . . . . . . . ±15 kV

ESD Rating (IEC1000-4-2 Contact) (I-O Pins) . . . . . . ±8 kV

EFT Rating (IEC1000-4-4) (I-O Pins) . . . . . . . . . . . . . ±2 kV

*This is a stress rating only; functional operation of the device at these or any other

conditions above those indicated in the operation sections of this specification is
not implied. Exposure to absolute maximum rating conditions for extended
periods of time may affect reliability.

ORDERING GUIDE

Model Temperature Range Package Option

ADM2209EARU –40°C to +85°C RU-38

PIN CONFIGURATION

R5
R4
R3
R2
R1

R1
R2
R3
R4
R5

OUT
OUT
OUT
OUT
OUT

T3

IN

T2

IN

T1

IN

STBY

V

T1

IN

T2

IN

T3

IN
OUT
OUT
OUT
OUT
OUT

A
A
A
A
A
A
A
A

DD

C+

B
B
B
B
B
B
B
B

1
2
3
4
5
6
7
8
9

ADM2209E

10

TOP VIEW

(Not to Scale)

11
12
13
14
15
16
17
18
19

38

R5INA

37

R4

A

IN

36

R3

A

IN

35

R2

A

IN

34

R1

A

IN

33

T3

A

OUT

32

T2

A

OUT

31

T1

A

OUT

30

V–

29

C–

28

GND

27

T1

B

OUT

26

T2

B

OUT

25

T3

B

OUT

24

R1INB

23

R2

B

IN

22

R3

B

IN

21

R4

B

IN

20

R5

B

IN

REV. 0

–3–

ADM2209E

PIN FUNCTION DESCRIPTION

Pin Number Mnemonic Function

1R5
2R4
3R3
4R2
5R1
6T3
7T2
8T1
9 STBY 3.3 V/5 V Standby Power Supply for Receiver R5 in Ports A and B
10 V
11 C+ Positive Terminal of C1 (If C1 is polarized capacitor.)
12 T1
13 T2
14 T3
15 R1
16 R2
17 R3
18 R4
19 R5
20 R5
21 R4
22 R3
23 R2
24 R1
25 T3
26 T2
27 T1
28 GND Ground Pin. Must Be Connected to 0 V
29 C– Negative Terminal of C1 (If C1 is polarized capacitor.)
30 V– Inverter Output (–12 V Nominal)–Terminal of C2 (If C2 is polarized capacitor.)
31 T1
32 T2
33 T3
34 R1
35 R2
36 R3
37 R4
38 R5INA Receiver Input (EIA-232 Signal Levels)

A Receiver Output (3.3 V/5 V TTL/CMOS Logic Levels)

OUT

A Receiver Output (3.3 V/5 V TTL/CMOS Logic Levels)

OUT

A Receiver Output (3.3 V/5 V TTL/CMOS Logic Levels)

OUT

A Receiver Output (3.3 V/5 V TTL/CMOS Logic Levels)

OUT

A Receiver Output (3.3 V/5 V TTL/CMOS Logic Levels)

OUT

A Driver Input (3.3 V/5 V TTL/CMOS Logic Levels)

IN

A Driver Input (3.3 V/5 V TTL/CMOS Logic Levels)

IN

A Driver Input (3.3 V/5 V TTL/CMOS Logic Levels)

IN

DD

B Driver Input (3.3 V/5 V TTL/CMOS Logic Levels)

IN

B Driver Input (3.3 V/5 V TTL/CMOS Logic Levels)

IN

B Driver Input (3.3 V/5 V TTL/CMOS Logic Levels)

IN

B Receiver Output (3.3 V/5 V TTL/CMOS Logic Levels)

OUT

B Receiver Output (3 V/5 V TTL/CMOS Logic Levels)

OUT

B Receiver Output (3.3 V/5 V TTL/CMOS Logic Levels)

OUT

B Receiver Output (3.3 V/5 V TTL/CMOS Logic Levels)

OUT

B Receiver Output (3.3 V/5 V TTL/CMOS Logic Levels)

OUT

B Receiver Input (EIA-232 Signal Levels)

IN

B Receiver Input (EIA-232 Signal Levels)

IN

B Receiver Input (EIA-232 Signal Levels)

IN

B Receiver Input (EIA-232 Signal Levels)

IN

B Receiver Input (EIA-232 Signal Levels)

IN

B Driver Output (EIA-232 Signal Levels)

OUT

B Driver Output (EIA-232 Signal Levels)

OUT

B Driver Output (EIA-232 Signal Levels)

OUT

A Driver Output (EIA-232 Signal Levels)

OUT

A Driver Output (EIA-232 Signal Levels)

OUT

A Driver Output (EIA-232 Signal Levels)

OUT

A Receiver Input (EIA-232 Signal Levels)

IN

A Receiver Input (EIA-232 Signal Levels)

IN

A Receiver Input (EIA-232 Signal Levels)

IN

A Receiver Input (EIA-232 Signal Levels)

IN

Positive Power Supply, Nominally +12 V

–4–

REV. 0