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MAX3320L

更新时间： 2024-09-24 22:55:23
品牌 Logo 应用领域
美信 - MAXIM /
页数 文件大小 规格书
12页 117K
描述
3V to 5.5V, up to 250kbps True RS-232 Transceiver with 4レA AutoShutdown Plus and Power-On Reset

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MAX3320L 数据手册

 浏览型号MAX3320L的Datasheet PDF文件第2页浏览型号MAX3320L的Datasheet PDF文件第3页浏览型号MAX3320L的Datasheet PDF文件第4页浏览型号MAX3320L的Datasheet PDF文件第5页浏览型号MAX3320L的Datasheet PDF文件第6页浏览型号MAX3320L的Datasheet PDF文件第7页 
19-1253; Rev 0; 8/97  
3V to 5.5V, up to 250kbps True RS-232 Tra ns c e ive r  
w ith 4µA AutoShutdow n Plus a nd Pow e r-On Re s e t  
MX320ABL/T  
_______________Ge n e ra l De s c rip t io n  
____________________________Fe a t u re s  
The MAX3320 combines a microprocessor (µP) super-  
visory circuit with an RS-232 transceiver. The power-on  
reset performs a single function: it asserts a reset signal  
♦ Precise Monitoring of 5V and 3.3V Power-  
Supply Voltages:  
— 100ms (min) Power-On RESET Pulse Width  
— Power-Supply Transient Immunity  
whenever the V supply voltage declines below a pre-  
CC  
set threshold, staying asserted for at least 100ms after  
— Guaranteed RESET Valid to V = 1V  
CC  
V
CC  
rises above the reset threshold. The MAX3320 has  
an active-low RESET output, which is guaranteed to be in  
♦ 4µA Supply Current Achieved with  
the correct state for V down to 1V. The reset compara-  
CC  
AutoShutdown Plus  
tor is designed to ignore fast transients on V . Reset  
CC  
♦ Receivers Always Active  
thresholds suitable for operation with a variety of supply  
voltages are available.  
♦ Power-On Reset Always Active  
♦ 4µA Low-Power Shutdown  
♦ 250kbps Guaranteed Data Rate  
The MAX3320 tra nsc e ive rs ha ve a p roprie ta ry low-  
dropout transmitter output stage, enabling true RS-232  
performance with a dual charge pump powered from a  
+3V to +5.5V supply. The device requires only four  
small 0.1µF external charge-pump capacitors, and is  
guaranteed to run at data rates of up to 250kbps. It  
comes in the space-saving 20-pin SSOP package.  
______________Ord e rin g In fo rm a t io n  
________________________Ap p lic a t io n s  
Palmtop Computers  
PART*  
TEMP. RANGE  
0°C to +70°C  
PIN-PACKAGE  
20 SSOP  
Portable/Battery-Powered Equipment  
Hand-Held Equipment  
MAX3320_CAP  
MAX3320_EAP  
-40°C to +85°C  
20 SSOP  
Peripherals  
* This part offers a choice of reset threshold voltage. From the  
table below, select the suffix corresponding to the desired  
threshold and insert it into the blank to complete the part  
number.  
Printers  
__________________P in Co n fig u ra t io n  
RESET THRESHOLD  
SUFFIX  
(V)  
A
B
L
T
4.25  
2.85  
4.63  
3.08  
TOP VIEW  
V+  
C2+  
1
2
3
4
5
6
7
8
9
20 C1+  
19  
V
CC  
C2-  
18 C1-  
V-  
17 GND  
MAX3320  
T1IN  
16 T1OUT  
15 T2OUT  
14 R1IN  
T2IN  
Typical Operating Circuit appears at end of data sheet.  
R1OUT  
R2OUT  
INVALID  
13 R2IN  
12 FORCEON  
11 FORCEOFF  
RESET 10  
SSOP  
AutoShutdown Plus is a trademark of Maxim Integrated 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 408-737-7600 ext. 3468.  
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