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MAX3228-MAX3229

更新时间： 2024-11-25 22:36:07
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美信 - MAXIM /
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14页 238K
描述
+2.5V to +5.5V RS-232 Transceivers in UCSP

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MAX3228-MAX3229 数据手册

 浏览型号MAX3228-MAX3229的Datasheet PDF文件第2页浏览型号MAX3228-MAX3229的Datasheet PDF文件第3页浏览型号MAX3228-MAX3229的Datasheet PDF文件第4页浏览型号MAX3228-MAX3229的Datasheet PDF文件第5页浏览型号MAX3228-MAX3229的Datasheet PDF文件第6页浏览型号MAX3228-MAX3229的Datasheet PDF文件第7页 
19-2140; Rev 0; 8/01  
+2.5V to +5.5V RS-232 Transceivers  
in UCSP  
General Description  
Features  
The MAX3228/MAX3229 are +2.5V to +5.5V powered  
EIA/TIA-232 and V.28/V.24 communications interfaces  
with low power requirements, and high data-rate capa-  
bilities, in a chip-scale package (UCSP™).  
o 6 ✕ 5 Chip-Scale Packaging (UCSP)  
o 1µA Low-Power AutoShutdown  
o 250kbps Guaranteed Data Rate  
The MAX3228/MAX3229 achieve a 1µA supply current  
with Maxim’s AutoShutdown™ feature. They save  
power without changes to existing BIOS or operating  
systems by entering low-power shutdown mode when  
the RS-232 cable is disconnected, or when the trans-  
mitters of the connected peripherals are off.  
o Meets EIA/TIA-232 Specifications Down to +3.1V  
o RS-232 Compatible to +2.5V Allows Operation  
from Single Li+ Cell  
o Small 0.1µF Capacitors  
o Configurable Logic Levels  
The transceivers have a proprietary low-dropout trans-  
mitter output stage, delivering RS-232 compliant perfor-  
mance from a +3.1V to +5.5V supply, and RS-232  
compatible performance with a supply voltage as low  
as +2.5V. The dual charge pump requires only four  
small 0.1µF capacitors for operation from a +3.0V sup-  
ply. Each device is guaranteed to run at data rates of  
250kbps while maintaining RS-232 output levels.  
Ordering Information  
PIN-  
PACKAGE  
PART  
TEMP. RANGE  
MAX3228EBV  
MAX3229EBV  
-40°C to +85°C  
-40°C to +85°C  
6 ✕ 5 UCSP*  
6 ✕ 5 UCSP*  
The MAX3228/MAX3229 offer a separate power-supply  
input for the logic interface, allowing configurable logic  
levels on the receiver outputs and transmitter inputs.  
*Requires solder temperature profile described in the Absolute  
Maximum Ratings section.  
*UCSP reliability is integrally linked to the user’s assembly  
methods, circuit board material, and environment. Refer to the  
UCSP Reliabilitly Notice in the UCSP Reliability section of this  
data sheet for more information.  
Operating over a +1.65V to V  
range, V provides the  
L
CC  
MAX3228/MAX3229 compatibility with multiple logic  
families.  
The MAX3229 contains one receiver and one transmit-  
ter. The MAX3228 contains two receivers and two  
transmitters. The MAX3228/MAX3229 are available in  
tiny chip-scale packaging and are specified across the  
extended industrial temperature range of -40°C to  
+85°C.  
Typical Operating Circuits  
2.5V TO 5.5V 1.65V TO 5.5V  
0.1µF  
C
0.1µF  
BYPASS  
A1  
A5  
V
V
C1  
CC  
B1  
A4  
L
C1+  
V+  
C3  
0.1µF  
C1  
0.1µF  
Applications  
D1  
A2  
C1-  
C2+  
MAX3228  
V-  
Personal Digital Assistants  
Cell Phone Data Lump Cables  
Set-Top Boxes  
C2  
0.1µF  
C4  
0.1µF  
A3  
V
L
C2-  
T1OUT  
A6 T1IN  
E3  
RS-232  
OUTPUTS  
TTL/CMOS  
INPUTS  
V
L
B6  
T2IN  
T2OUT E4  
Hand-Held Devices  
Cell Phones  
V
L
L
R1IN  
D6 R1OUT  
E6  
5kΩ  
TTL/CMOS  
OUTPUTS  
RS-232  
INPUTS  
V
Typical Operating Circuits continued at end of data sheet.  
Pin Configurations appear at end of data sheet.  
C6  
R2OUT  
R2IN E5  
5kΩ  
V
V
L
L
TO POWER-  
MANAGEMENT  
UNIT  
UCSP is a trademark of Maxim Integrated Products, Inc.  
E2  
INVALID  
20µA  
20µA  
FORCEON  
AutoShutdown is a trademark of Maxim Integrated Products, Inc.  
FORCEOFF C5  
B5  
V
L
GND  
E1  
________________________________________________________________ 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...14

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