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MAX3250

更新时间： 2024-11-08 22:58:03
品牌 Logo 应用领域
美信 - MAXIM /
页数 文件大小 规格书
10页 233K
描述
【50V Isolated, 3.0V to 5.5V, 250kbps, 2 Tx/2 Rx, RS-232 Transceiver

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MAX3250 数据手册

 浏览型号MAX3250的Datasheet PDF文件第2页浏览型号MAX3250的Datasheet PDF文件第3页浏览型号MAX3250的Datasheet PDF文件第4页浏览型号MAX3250的Datasheet PDF文件第5页浏览型号MAX3250的Datasheet PDF文件第6页浏览型号MAX3250的Datasheet PDF文件第7页 
19-2443; Rev 1; 2/03  
50ꢀ ꢁsolateꢂd 3ꢃ0ꢀ to 5ꢃ5ꢀd  
250kbpsd 2 Tx/2 Rxd RS-232 Transceiver  
General Description  
Features  
The MAX3250 is a 3.0V to 5.5V powered, ±50V isoꢀated  
EIA/TIA-232 and V.28/V.24 communications interface  
with high data-rate capabiꢀities. The MAX3250 is a duaꢀ  
die part that operates with up to ±50V difference  
between the RS-232 side and the ꢀogic side (ISOCOM  
to GND). This makes the device ideaꢀ for operation in  
noisy conditions with high common-mode voꢀtages.  
This feature prevents damage to the device if RS-232  
ꢀines are inadvertentꢀy short-circuited to a +24V or ±48V  
power bus.  
ꢀ ±±50V Isolatsꢀ  
ꢀ 25µAVSuppoyVCurreꢀaVtꢀVShuadswꢀ  
ꢀ 2±5kbpIVGulrlꢀaeedVDlalVRlae  
ꢀ FAULT Ouapua  
ꢀ Htgh- mpedlꢀceVTrlꢀImtaaerVlꢀdVRecetver  
OuapuaIVtꢀVShuadswꢀ  
ꢀ Splce-SlvtꢀgVSSOPVPlcklge  
The MAX3250 is powered by a singꢀe 3V to 5.5V suppꢀy  
on the ꢀogic side. Power is transferred from the ꢀogic  
side to the isoꢀated side by ±±00V eꢁternaꢀ capacitors.  
ꢀ  ꢀducasroeII/TrlꢀIfsrmeroeIIVDeItgꢀVStmpotfteI  
EM VCsmpotlꢀce  
ꢀ Lsw-CsIaVRepolcemeꢀaVfsrVOpas- Isolaed  
The MAX3250 has two receivers (Rꢁ) and two drivers  
(Tꢁ) and is guaranteed to run at data rates of 250kbps  
whiꢀe maintaining RS-232 output ꢀeveꢀs. The trans-  
ceivers have a proprietary ꢀow-dropout transmitter out-  
put stage, deꢀivering true RS-232 performance from a  
3V to 5.5V suppꢀy with a duaꢀ charge pump. The device  
features a FAULT open-drain output to signaꢀ an eꢁces-  
sive isoꢀated-side voꢀtage condition on any of the RS-  
232 inputs. This output can drive an aꢀarm LED or can  
be monitored by the processor to prevent operation  
under these conditions. The receiver outputs are high  
impedance in shutdown, aꢀꢀowing muꢀtipꢀe interfaces  
(IrDA, RS-232, RS-485) to be connected to the same  
UART.  
TrlꢀIcetverI  
ꢀ MeeaIVE A/T A-232VSpectftclatsꢀIVDswꢀVasV3.50  
Orꢂering ꢁnformation  
PART  
TEMPVRANGE  
0 C to +70 C  
-40 C to +85 C  
P N-PACKAGE  
28 SSOP  
MAX3250CAI  
MAX3250EAI  
28 SSOP  
Pin Configuration  
The MAX3250 is avaiꢀabꢀe in a space-saving 28-pin  
SSOP package.  
TOP VIEW  
C1-  
R1OUT  
R2OUT  
T1IN  
1
2
3
4
5
6
7
8
9
28 V  
CC  
Applications  
27 C2-  
Industriaꢀ Controꢀ  
26 GND  
25 FAULT  
24 SHDN  
23 N.C.  
22 N.C.  
21 C2+  
Programmabꢀe Logic Controꢀꢀer  
Point-of-Saꢀe Equipment  
PC-to-Router Connections  
Diagnostic Ports  
T2IN  
MAX3250  
N.C.  
N.C.  
Teꢀecom Equipment  
C1+  
C3+  
20 ISOV  
19 R1IN  
18 R2IN  
CC  
V+ 10  
C3- 11  
C4+ 12  
C4- 13  
V- 14  
17 T1OUT  
16 T2OUT  
15 ISOCOM  
Typical Operating Circuit appears at end of data sheet.  
SSOP  
________________________________________________________________ Maxim Integrated Products  
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at  
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.  
1234567...10

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