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MAX349

更新时间： 2024-09-30 22:55:23
品牌 Logo 应用领域
美信 - MAXIM 复用器
页数 文件大小 规格书
20页 302K
描述
Serially Controlled, Low-Voltage, 8-Channel/Dual 4-Channel Multiplexers

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MAX349 数据手册

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19-0451; Rev 1; 10/98  
S e ria lly Co n t ro lle d , Lo w -Vo lt a g e ,  
8 -Ch a n n e l/Du a l 4 -Ch a n n e l Mu lt ip le x e rs  
49/MAX350  
Ge n e ra l De s c rip t io n  
____________________________Fe a t u re s  
The MAX349/MAX350 are 8-channel and dual 4-channel  
serially controlled multiplexers (muxes). These muxes  
conduct equally well in either direction. On-resistance  
(100Ω max) is matched between switches to 16Ω max  
and is flat (10Ω max) over the specified signal range.  
♦ SPI/QSPI, MICROWIRE-Compatible Serial  
Interface  
♦ 8 Separately Controlled SPST Switches  
♦ Single 8-to-1 Mux (MAX349)  
These CMOS devices can operate continuously with  
dual power supplies ranging from ±2.7V to ±8V or a sin-  
gle supply between +2.7V and +16V. Each mux can  
handle rail-to-rail analog signals. The off-leakage current  
is only 0.1nA at +25°C or 5nA at +85°C.  
Dual 4-to-1 Mux (MAX350)  
♦ 100Ω Signal Paths with ±5V Supplies  
®
♦ Rail-to-Rail Signal Handling  
♦ Asynchronous RESET Input  
Upon power-up, all switches are off and the internal  
shift registers are reset to zero.  
♦ ±2.7V to ±8V Dual Supplies  
+2.7V to +16V Single Supply  
The serial interface is compatible with SPI™/QSPI™  
and MICROWIRE™. Functioning as a shift register, it  
allows data (at DIN) to be clocked in synchronously  
with the rising edge of clock (SCLK). The shift register’s  
output (DOUT) enables several MAX349s or MAX350s  
to be daisy chained.  
♦ >2kV ESD Protection per Method 3015.7  
♦ TTL/CMOS-Compatible Inputs (with +5V or ±5V  
Supplies)  
Ord e rin g In fo rm a t io n  
All digital inputs have 0.8V or 2.4V logic thresholds,  
ensuring both TTL and CMOS-logic compatibility when  
using ±5V supplies or a single +5V supply.  
PART  
TEMP. RANGE  
0°C to +70°C  
0°C to +70°C  
0°C to +70°C  
0°C to +70°C  
PIN-PACKAGE  
18 Plastic DIP  
18 Wide SO  
20 SSOP  
MAX349CPN  
MAX349CWN  
MAX349CAP  
MAX349C/D  
________________________Ap p lic a t io n s  
Serial Data-Acquisition  
Systems  
Industrial and Process-  
Control Systems  
Dice*  
Ordering Information continued at end of data sheet.  
*Contact factory for dice specifications.  
Avionics  
ATE Equipment  
Networking  
Audio Signal Routing  
P in Co n fig u ra t io n s /Fu n c t io n a l Dia g ra m s  
TOP VIEW  
SCLK  
CS  
18  
SCLK  
1
CS  
1
2
3
4
5
6
7
8
9
18  
17  
16  
15  
14  
13  
12  
11  
10  
MAX349  
MAX350  
V+  
DIN  
RESET  
17  
2
3
4
5
6
7
8
9
V+  
DIN  
RESET  
DOUT  
V-  
DOUT  
16  
LOGIC  
LOGIC  
GND  
GND  
V-  
15  
COM  
NO0  
NO1  
NO2  
N.C.  
14  
COMA  
NO0A  
NO1A  
NO2A  
COMB  
NO0B  
NO1B  
NO2B  
NO3B  
NO7  
NO6  
NO5  
NO4  
13  
12  
11  
10  
NO3  
NO3A  
DIP/SO  
N.C. = NOT INTERNALLY  
CONNECTED  
DIP/SO  
Pin Configurations continued at end of data sheet.  
SPI and QSPI are trademarks of Motorola, Inc. MICROWIRE is a trademark of National Semiconductor Corp.  
Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd.  
________________________________________________________________ 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 1-800-835-8769.  
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