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MAX218

更新时间： 2024-11-15 22:55:27
品牌 Logo 应用领域
美信 - MAXIM /
页数 文件大小 规格书
8页 94K
描述
1.8V to 4.25V-Powered, True RS-232 Dual Transceiver

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中文翻译

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MAX218 数据手册

 浏览型号MAX218的Datasheet PDF文件第2页浏览型号MAX218的Datasheet PDF文件第3页浏览型号MAX218的Datasheet PDF文件第4页浏览型号MAX218的Datasheet PDF文件第5页浏览型号MAX218的Datasheet PDF文件第6页浏览型号MAX218的Datasheet PDF文件第7页 
19-0246; Rev 1; 7/95  
1 .8 V t o 4 .2 5 V-P o w e re d ,  
Tru e RS -2 3 2 Du a l Tra n s c e ive r  
MAX218  
_______________Ge n e ra l De s c rip t io n  
____________________________Fe a t u re s  
The MAX218 RS-232 transceiver is intended for battery-  
powered EIA/TIA-232E and V.28/V.24 communications  
interfaces that need two drivers and two receivers with  
minimum power consumption. It provides a wide +1.8V  
to +4.25V operating voltage range while maintaining  
true RS-232 a nd EIA/TIA-562 volta g e le ve ls . The  
MAX218 runs from two alkaline, NiCd, or NiMH cells  
without any form of voltage regulator.  
BETTER THAN BIPOLAR!  
♦ Operates Directly from Two Alkaline, NiCd,  
or NiMH Cells  
♦ +1.8V to +4.25V Supply Voltage Range  
♦ 120kbps Data Rate  
♦ Low-Cost Surface-Mount Components  
♦ Meets EIA/TIA-232E Specifications  
♦ 1µA Low-Power Shutdown Mode  
♦ Both Receivers Active During Low-Power Shutdown  
♦ Three-State Receiver Outputs  
A shutdown mode reduces current consumption to  
1µA, extending battery life in portable systems. While  
shut down, all receivers can remain active or can be  
disabled under logic control, permitting a system incor-  
p ora ting the CMOS MAX218 to monitor e xte rna l  
devices while in low-power shutdown mode.  
♦ Flow-Through Pinout  
A guaranteed 120kbps data rate provides compatibility  
with popular software for communicating with personal  
computers. Three-state drivers are provided on all  
receiver outputs so that multiple receivers, generally of  
different interface standards, can be wire-ORed at the  
UART. The MAX218 is available in 20-pin DIP, SO, and  
SSOP packages.  
♦ On-Board DC-DC Converters  
♦ 20-Pin SSOP, Wide SO, or DIP Packages  
______________Ord e rin g In fo rm a t io n  
PART  
TEMP. RANGE  
0°C to +70°C  
0°C to +70°C  
0°C to +70°C  
0°C to +70°C  
-40°C to +85°C  
-40°C to +85°C  
-40°C to +85°C  
PIN-PACKAGE  
20 Plastic DIP  
20 Wide SO  
20 SSOP  
MAX218CPP  
MAX218CWP  
MAX218CAP  
MAX218C/D  
MAX218EPP  
MAX218EWP  
MAX218EAP  
________________________Ap p lic a t io n s  
Battery-Powered Equipment  
Computers  
Dice*  
Printers  
20 Plastic DIP  
20 Wide SO  
20 SSOP  
Peripherals  
Instruments  
Modems  
*Contact factory for dice specifications.  
__________Typ ic a l Op e ra t in g Circ u it  
__________________P in Co n fig u ra t io n  
TOP VIEW  
1
19  
LX  
N.C.  
GND  
V+  
1
2
20  
19  
18  
17  
16  
15  
14  
13  
12  
11  
V+  
LX  
1.8V  
TO  
15  
18  
16  
6
V-  
V
CC  
4.25V  
C1+  
SHDN  
EN  
C1+  
3
MAX218  
3
GND  
C1-  
4
ON/OFF  
SHDN  
T1IN  
C1-  
MAX218  
GND  
5
T1OUT  
7
14  
13  
T1  
T2  
V
CC  
V-  
6
T2IN  
T2OUT  
8
9
T1IN  
T2IN  
T1OUT  
T2OUT  
R1IN  
R2IN  
7
R1OUT  
R1IN 12  
8
R1  
R1OUT  
R2OUT  
9
R2OUT  
EN  
R2IN  
11  
10  
R2  
10  
GND  
5, 17, 20  
4
ENABLE  
DIP/SO/SSOP  
________________________________________________________________ Maxim Integrated Products  
1
Ca ll t o ll fre e 1 -8 0 0 -9 9 8 -8 8 0 0 fo r fre e s a m p le s o r lit e ra t u re .  
12345678

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