參數(shù)資料
型號: ADM561JR
廠商: Analog Devices Inc
文件頁數(shù): 1/12頁
文件大?。?/td> 0K
描述: IC TXRX RS232 4:5 3.3V LP 28SOIC
標準包裝: 27
類型: 收發(fā)器
驅(qū)動器/接收器數(shù): 4/5
規(guī)程: RS232
電源電壓: 3 V ~ 3.6 V
安裝類型: 表面貼裝
封裝/外殼: 28-SOIC(0.295",7.50mm 寬)
供應商設(shè)備封裝: 28-SOIC W
包裝: 管件
Ultralow Power +3.3 V, RS-232
Notebook PC Serial Port Drivers/Receivers
ADM560/ADM561
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
2006 Analog Devices, Inc. All rights reserved.
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
FUNCTIONAL BLOCK DIAGRAM
7
16
15
14
12
13
17
11
T1
2
T1IN
T1OUT
6
T2
3
T2IN
T2OUT
20
T3
1
T3IN
T3OUT
24
21
T4
28
T4IN
T4OUT
R1
9
R1OUT
R1IN
8
R2
4
R2OUT
R2IN
5
R3
27
R3OUT
R3IN
26
R4
23
R4OUT
R4IN
22
R5
18
25
R5OUT
R5IN
SHDN (ADM561)
19
10
C1+
C1–
C2+
VCC
V+
V–
C2–
+
GND
+3.3V TO +6.6V
VOLTAGE
DOUBLER
+6.6V TO –6.6V
VOLTAGE
INVERTER
0.1F
C3
1F
6.3V
1F
10V
1F
10V
C4
1F
10V
EIA/TIA-232
OUTPUTS
EIA/TIA-232
INPUTS
SHDN (ADM560)
ADM560/
ADM561
+3.3V INPUT
CMOS
INPUTS
CMOS
OUTPUTS
EN (ADM560)
EN (ADM561)
05
667-
001
Figure 1.
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
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.
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