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MAX3281E

更新时间： 2024-11-22 22:58:03
品牌 Logo 应用领域
美信 - MAXIM /
页数 文件大小 规格书
11页 316K
描述
20Mbps, +3.3V, SOT23 RS-485/ RS-422 Transmitters

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MAX3281E 数据手册

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19-2770; Rev 1; 2/03  
20Mbps, +3.3V, SOT23 RS-485/  
RS-422 Transmitters  
General Description  
Features  
The MAX3293/MAX3294/MAX3295 low-power, high-  
speed transmitters for RS-485/RS-422 communication  
operate from a single +3.3V power supply. These  
devices contain one differential transmitter. The  
MAX3295 transmitter operates at data rates up to  
20Mbps, with an output skew of less than 5ns, and a  
guaranteed driver propagation delay below 25ns. The  
MAX3293 (250kbps) and MAX3294 (2.5Mbps) are  
slew-rate limited to minimize EMI and reduce reflections  
caused by improperly terminated cables.  
♦ Space-Saving 6-Pin SOT23 Package  
♦ 250kbps/2.5Mbps/20Mbps Data Rates Available  
♦ Operate from a Single +3.3V Supply  
♦ ESD Protection  
±9kV—Human Body Model  
♦ Slew-Rate Limited for Errorless Data  
Transmission (MAX3293/MAX3294)  
♦ 1µA Low-Current Shutdown Mode  
♦ -7V to +12V Common-Mode Input Voltage Range  
The MAX3293/MAX3294/MAX3295 output level is guar-  
anteed at +1.5V with a standard 54Ω load, compliant  
with RS-485 specifications. The transmitter draws 5mA  
of supply current when unloaded, and 1µA in low-  
power shutdown mode (DE = GND).  
♦ Current Limiting and Thermal Shutdown for  
Driver-Overload Protection  
Hot-swap circuitry eliminates false transitions on the data  
cable during circuit initialization or connection to a live  
backplane, and short-circuit current limiting and thermal-  
shutdown circuitry protect the driver against excessive  
power dissipation.  
♦ Hot-Swap Inputs for Telecom Applications  
♦ Automotive Temperature Range (-40°C to +125°C)  
Ordering Information  
The MAX3293/MAX3294/MAX3295 are offered in a  
6-pin SOT23 package, and are specified over the  
automotive temperature range.  
PIN-  
PACKAGE  
PART  
TEMP RANGE  
MAX3293AUT-T  
MAX3294AUT-T  
MAX3295AUT-T  
-40°C to +125°C  
-40°C to +125°C  
-40°C to +125°C  
6 SOT23-6  
6 SOT23-6  
6 SOT23-6  
Applications  
RS-485/RS-422 Communications  
Clock Distribution  
Selector Guide  
Telecom Equipment  
Automotive  
MAXIMUM  
DATA RATE  
(Mbps)  
SLEW-RATE  
LIMITED  
TOP  
MARK  
PART  
Security Equipment  
Point-of-Sale Equipment  
Industrial Control  
MAX3293AUT-T  
MAX3294AUT-T  
MAX3295AUT-T  
0.25  
2.5  
20  
Yes  
Yes  
No  
ABNI  
ABNJ  
ABNK  
Pin Configuration  
Typical Operating Circuit  
120Ω  
TOP VIEW  
Z
DI  
1
2
3
6
5
4
Y
DI  
RO  
D
R
Y
MAX3293  
MAX3294  
MAX3295  
DE  
V
GND  
Z
CC  
MAX3293  
MAX3294  
MAX3295  
MAX3280E  
MAX3281E  
MAX3283E  
MAX3284E  
DE  
SOT23-6  
________________________________________________________________ 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.  
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