adm560 Analog Devices, Inc., adm560 Datasheet

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adm560

Manufacturer Part Number
adm560
Description
Ultralow Power, +3.3 V, Rs-232 Notebook Pc Serial Port Drivers/receivers
Manufacturer
Analog Devices, Inc.
Datasheet

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FEATURES
RS-232 compatible
Operates with 3 V or 5 V logic
Ultralow power CMOS: 1.3 mA operation
Low power shutdown: 0.2 μA
Suitable for serial port mice
116 kbps data rate
1 μF charge pump capacitors
Single +3 V to +3.6 V power supply
Two receivers active in shutdown (ADM560)
APPLICATIONS
Notebook computers
Peripherals
Modems
Printers
Battery-operated equipment
GENERAL DESCRIPTION
The ADM560/ADM561 are four driver/five receiver interface
devices designed to meet the EIA-232 standard and operate with
a single +3.3 V power supply. The devices feature an on-board
dc-to-dc converter, eliminating the need for dual ±5 V power
supplies. This dc-to-dc converter contains a voltage doubler
and voltage inverter, both of which internally generate ±6.6 V
from the input +3.3 V power supply.
The ADM560 and the ADM561 consume only 5 mW making
them ideally suited for battery and other power-sensitive appli-
cations. A shutdown facility is also provided to reduce the power
to 0.66 μW.
The ADM560 contains active low shutdown and an active high
receiver enable signal. In shutdown mode, two receivers remain
active, thereby allowing monitoring of peripheral devices. This
feature allows the device to be shut down until a peripheral
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 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.
Notebook PC Serial Port Drivers/Receivers
Ultralow Power +3.3 V, RS-232
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
device begins communication. The active receivers alert the
processor, and then take the ADM560 out of shutdown mode.
The ADM561 features active high shutdown and an active
low receiver enable. In this device, all receivers are disabled
in shutdown.
The ADM560/ADM561 are fabricated using CMOS technology
for minimal power consumption. They feature a high level of
over-voltage protection and latch-up immunity. The receiver
inputs can withstand up to ±25 V levels. The transmitter inputs
can be driven from either 3 V or 5 V logic levels. This allows
operation in mixed 3 V/5 V power supply systems.
The ADM560/ADM561 are packaged in a 28-lead SOIC and
a 28-lead SSOP package.
OUTPUTS
INPUTS
CMOS
CMOS
EN (ADM560)
EN (ADM561)
R1
R2
R3
R4
R5
1µF
10V
1µF
10V
T1
T2
T3
T4
OUT
OUT
OUT
OUT
OUT
FUNCTIONAL BLOCK DIAGRAM
IN
IN
IN
IN
+
+
12
14
15
16
20
21
26
22
19
24
7
6
8
5
C1+
C1–
C2+
C2–
©2006 Analog Devices, Inc. All rights reserved.
+3.3V TO +6.6V
+6.6V TO –6.6V
GND
DOUBLER
INVERTER
10
VOLTAGE
VOLTAGE
ADM560/ADM561
Figure 1.
T1
T2
T3
T4
R1
R2
R3
R4
R5
ADM560/
ADM561
V
V+
CC
V–
11
13
17
28
27
23
18
25
+3.3V INPUT
2
3
1
9
4
+
+
www.analog.com
T1
T2
T3
T4
R1
R2
R3
R4
R5
SHDN (ADM560)
SHDN (ADM561)
C3
1µF
6.3V
C4
1µF
10V
OUT
OUT
OUT
OUT
IN
IN
IN
IN
IN
EIA/TIA-232
OUTPUTS
EIA/TIA-232
INPUTS
0.1µF

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adm560 Summary of contents

Page 1

... A shutdown facility is also provided to reduce the power to 0.66 μW. The ADM560 contains active low shutdown and an active high receiver enable signal. In shutdown mode, two receivers remain active, thereby allowing monitoring of peripheral devices. This feature allows the device to be shut down until a peripheral Rev ...

Page 2

... ADM560/ADM561 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 4 ESD Caution.................................................................................. 4 REVISION HISTORY 9/06—Rev Rev. B Updated Format..................................................................Universal Changes to Specifications ................................................................ 3 10/05—Rev Rev. A Updated Format..................................................................Universal Changes to Specifications ................................................................ 3 Update to Outline Dimensions....................................................... 9 Changes to Ordering Guide .......................................................... 10 7/94— ...

Page 3

... V, three transmitter outputs loaded with 3 kΩ to ground CC ±4 3.0 V, all transmitter outputs, loaded with 3 kΩ to ground CC 3 load 3 load 0.2 5 μA SHDN = GND (ADM560), SHDN = SHDN, SHDN EN, EN, SHDN, SHDN μ GND IN + ...

Page 4

... ADM560/ADM561 ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 2. Parameter Rating V −0 V− +0 −14 V Input Voltages T −0 (V+, +0 Output Voltages T (V+, +0 (V−, −0.3 V) OUT R −0 OUT Short-Circuit Duration T Continuous OUT ...

Page 5

... External Capacitor 2 is connected between these pins. 17 V− Internally Generated Negative Supply. −6.6 V nominal. 24 EN/EN Receiver Enable. EN, active high on ADM560. EN, active low on ADM561. Refer to Table 4. 25 SHDN/SHDN Shutdown Control. SHDN, active low on ADM560. SHDN, active high on ADM561. Refer to Table 4. Table 4. ADM560/ADM561 Enable and Shutdown Control ADM560 ...

Page 6

... ADM560/ADM561 TYPICAL PERFORMANCE CHARACTERISTICS 6 5 160kbps 80kbps 25° 3. TRANSMITTERS LOADED WITH R = 5kΩ 1µ 500 1000 1500 LOAD CAPACITANCE (pF) Figure 4. Transmitter Output Voltage High vs. Load Capacitance 6. 25° 1µ 3.3V CC TRANSMITTERS UNLOADED 5 ...

Page 7

... T = 25° 3. 1µF ALL TRANSMITTERS UNLOADED 5 V+ AND V– V+ LOADED V– LOADED 0 EQUALLY LOADED NO LOAD ON V– NO LOAD ON V+ –5 – CURRENT (mA) Figure 10. V+, V− vs. Load Current 20 25 Rev Page ADM560/ADM561 ...

Page 8

... Table 4 shows the truth table for the enable and shutdown control signals. When disabled all receivers are placed in a high impedance state. In shutdown, all transmitters are disa- bled and all receivers on the ADM561 are disabled. On the ADM560, Receiver R4 and Receiver R5 remain enabled in shutdown. Rev Page ...

Page 9

... CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN. Figure 14. 28-Lead Standard Small Outline Package [SOIC_W] Wide Body (RW-28) Dimensions shown in millimeters and (inches) Rev Page ADM560/ADM561 0.25 0.09 8° 0.95 4° 0.75 0° ...

Page 10

... ADM560JR 0°C to +70°C ADM560JR-REEL 0°C to +70°C 1 ADM560JRZ 0°C to +70°C 1 ADM560JRZ-REEL 0°C to +70°C ADM560JRS 0°C to +70°C ADM560JRS-REEL 0°C to +70°C 1 ADM560JRSZ 0°C to +70°C ADM560JRSZ-REEL 1 0°C to +70°C ADM561JR 0°C to +70°C ADM561JR-REEL 0°C to +70°C ...

Page 11

... NOTES Rev Page ADM560/ADM561 ...

Page 12

... ADM560/ADM561 NOTES ©2006 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D05667-0-9/06(B) Rev Page ...

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