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MAX221E

更新时间： 2023-12-20 18:45:50
品牌 Logo 应用领域
亚德诺 - ADI /
页数 文件大小 规格书
12页 176K
描述
±15kV ESD保护、+5V、1μA、单路RS-232收发器，带有AutoShutdown

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MAX221E 数据手册

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19-1527; Rev ꢂ; 8/99  
1ꢀ5k EꢁDꢂ-rotected, +ꢀk, 1µA, ꢁingle Rꢁꢂ232  
Transceiver with Autoꢁhutdown  
MAX21E  
General Description  
Features  
The MAX221E is a +5V powered, single transmit/  
receive RS-232 and V.28 communications interface with  
automatic shutdown/wake-up features and high data  
rate capabilities.  
♦ Single RS-232 Transceiver in a Small 16-Pin TSSOP  
♦ ESD Protection for RS-232 I/O Pins  
±15kV—Human Body Model  
±8kV—IEC 1000-4-2, Contact Discharge  
±15kV—IEC 1000-4-2, Air-Gap Discharge  
The MAX221E features enhanced electrostatic discharge  
(ESD) protection. Both the transmitter output and receiver  
input are protected to 15kV using the ꢀEꢁ 1ꢂꢂꢂ-ꢃ-2 Air-  
Gap Discharge Method, to 8kV using the ꢀEꢁ 1ꢂꢂꢂ-ꢃ-2  
ꢁontact Discharge Method, and to 15kV using the  
Human Body Model.  
♦ Latchup Free  
♦ 1µA Supply Current  
♦ AutoShutdown Saves Power without Changes  
The MAX221E achieves a low 1µA supply current with  
Maxim’s revolutionary AutoShutdown™ feature.  
AutoShutdown saves power without changes to the  
existing BꢀOS or operating system by entering low-  
power shutdown mode when the RS-232 cable is dis-  
connected or when the transmitter of the connected  
peripheral is off. The MAX221E wakes up and drives the  
INVALID pin high when an active RS-232 cable is con-  
nected, signaling the host that a peripheral is connected  
to the communications port.  
to BIOS  
♦ Guaranteed 250kbps Data Rate  
Ordering Information  
PART  
TEMP. RANGE  
ꢂ°ꢁ to +7ꢂ°ꢁ  
ꢂ°ꢁ to +7ꢂ°ꢁ  
ꢃꢂ°ꢁ to +85°ꢁ  
ꢃꢂ°ꢁ to +85°ꢁ  
PIN-PACKAGE  
16 TSSOP  
16 SSOP  
MAX221EꢁUE  
MAX221EꢁAE  
MAX221EEUE  
MAX221EEAE  
The MAX221E is available in a 16-pin SSOP package as  
well as a 16-pin TSSOP that uses 5ꢂ% less board space  
than a 16-pin SO.  
16 TSSOP  
16 SSOP  
Applications  
Typical Operating Circuit  
Maintenance/Diagnostic Ports  
ꢀndustrial Systems  
+5V  
15  
Telecommunications  
Set-Top Boxes  
C3  
C
BYPASS  
0.1µF  
0.1µF  
V
CC  
3
7
2
C1+  
V+  
V-  
C1  
0.1µF  
4
5
6
-in Configuration  
C1-  
C2+  
MAX221E  
C4  
0.1µF  
C2  
0.1µF  
TOP VIEW  
C2-  
TIN  
EN  
C1+  
V+  
1
2
3
4
5
6
7
8
16 FORCEOFF  
15  
11  
TOUT 13  
V
CC  
14 GND  
9
ROUT  
RIN  
8
C1-  
C2+  
C2-  
V-  
MAX221E  
13 TOUT  
12 FORCEON  
11 TIN  
5k  
TO POWER-  
MANAGEMENT  
UNIT  
10  
16  
1
10 INVALID  
EN  
INVALID  
RIN  
9
ROUT  
12  
FORCEOFF  
V
FORCEON  
CC  
GND  
14  
TSSOP/SSOP  
CAPACITORS MAY BE  
POLARIZED OR UNPOLARIZED.  
AutoShutdown is a trademark of Maxim ꢀntegrated Products.  
________________________________________________________________ Maxim Integrated Products  
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.  
For small orders, phone 1-800-835-8769.  
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