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參數資料
| 型號： | MAX3221 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 1μA Supply-Current, True +3V to +5.5V RS-232 Transceivers with AutoShutdown(3V~5.5V,自動關閉方式接收器有效,120kbps，RS-232收發器) |
| 中文描述： | 1µA電源電流、+3V至+5.5V、真RS-232收發器，帶有AutoShutdown |
| 文件頁數： | 1/16頁 |
| 文件大小： | 203K |
| 代理商： | MAX3221 |
_______________General Desc ription
The MAX3221/MAX3223/MAX3243 achieve 1μA supply
current with Maxim’s revolutionary AutoShutdown fea-
ture. When the MAX3221/MAX3223/MAX3243 do not
sense a valid signal level on their receiver inputs, the
on-board power supply and drivers shut down. This
occurs if the RS-232 cable is disconnected or if the
transmitters of the connected peripheral are turned off.
The system turns on again when a valid level is applied
to any RS-232 receiver input. As a result, the system
saves power without changes to the existing BIOS or
operating system.
The MAX3221/MAX3223/MAX3243 transceivers are 3V-
powered EIA/TIA-232 and V.28/V.24 communications
interfaces intended for notebook computer applica-
tions. A proprietary, high-efficiency, dual charge-pump
power supply and a low-dropout transmitter combine to
deliver true RS-232 performance from a single +3.0V to
+5.5V supply. A guaranteed data rate of 120kbps pro-
vides compatibility with popular software for communi-
cating with personal computers.
The MAX3221/MAX3223/MAX3243 require only 0.1μF
capacitors in 3.3V operation, and can operate from input
voltages ranging from +3.0V to +5.5V. They are ideal for
3.3V-only systems, mixed 3.3V and 5.0V systems, or
5.0V-only systems that require true RS-232 performance.
The MAX3221 is a 1-driver/1-receiver 16-pin SSOP ver-
sion of the 20-pin MAX3223 (2-driver/2-receiver). The
MAX3243 3-driver/5-receiver, complete serial port is
ideal for notebook or subnotebook computers. The
MAX3243 includes one complementary always-active
receiver. This receiver can monitor an external device
(such as a modem) in shutdown, without forward bias-
ing the protection diodes in a UART that may have V
CC
completely removed.
____________________________Features
o
1μA Supply Current Achieved with AutoShutdown
o
Small 0.1μF Capacitors
o
True RS-232 Operation from V
CC
= 3.0V to 5.5V
o
Meets EIA/TIA-562 Specifications Down to 2.7V
o
Guaranteed 120kbps Data Rate
o
6V/μs Min Guaranteed Slew Rate
o
Smallest Single-Supply RS-232 Transceiver
(MAX3221)
o
Guaranteed Mouse Driveability (MAX3243)
________________________Applic ations
Notebook, Subnotebook, and Palmtop Computers
Battery-Powered Equipment
Hand-Held Equipment
Peripherals
Printers
M
1μA S upply Current, True +3V to +5.5V RS -232
Transc eivers with AutoS hutdown
________________________________________________________________ Maxim Integrated Products
1
19-0306; Rev 4; 10/96
PART
MAX3221
CAE
MAX3221EAE
MAX3223
CPP
MAX3223CAP
-40°C to +85°C
0°C to +70°C
0°C to +70°C
TEMP. RANGE
PIN-PACKAGE
16 SSOP
16 SSOP
20 Plastic DIP
20 SSOP
*Covered by U.S. Patent numbers 4,636,930; 4,679,134; 4,777,577; 4,797,899; 4,809,152; 4,897,774; 4,999,761; and other patents pending.
AutoShutdown is a trademark of Maxim Integrated Products.
Pin Configurations appear at end of data sheet.
Typical Operating Circuits appear at end of data sheet.
MAX3223EPP
MAX3223EAP
MAX3243
CWI
MAX3243CAI
MAX3243EWI
MAX3243EAI
-40°C to +85°C
-40°C to +85°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
20 Plastic DIP
20 SSOP
28 Wide SO
28 SSOP
28 Wide SO
28 SSOP
0°C to +70°C
______________Ordering Information
_____________________S elec tor Guide
MAX3221
MAX3223
MAX3243
1
2
3
1
2
5
3.0 to 5.5
3.0 to 5.5
3.0 to 5.5
Yes
Yes
Yes
PART
Tx
Rx
V
CC
RANGE (V)
AutoShutdown
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX3221CAE | 功能描述:RS-232接口集成電路 RoHS:否 制造商:Exar 數據速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| MAX3221CAE+ | 功能描述:RS-232接口集成電路 1uA 3-5.5V Tcvr w/AutoShutdown RoHS:否 制造商:Exar 數據速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| MAX3221CAE+T | 功能描述:RS-232接口集成電路 1uA 3-5.5V Tcvr w/AutoShutdown RoHS:否 制造商:Exar 數據速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| MAX3221CAE-T | 功能描述:RS-232接口集成電路 RoHS:否 制造商:Exar 數據速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
| MAX3221CDB | 功能描述:RS-232接口集成電路 3-5.5V Single-Ch Line Drvr/Rcvr RoHS:否 制造商:Exar 數據速率:52 Mbps 工作電源電壓:5 V 電源電流:300 mA 工作溫度范圍:- 40 C to + 85 C 安裝風格:SMD/SMT 封裝 / 箱體:LQFP-100 封裝: |
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