參數(shù)資料
型號: MAX349
廠商: Maxim Integrated Products, Inc.
英文描述: Serially Controlled, Low-Voltage, 8-Channel Multiplexers(接通電阻100Ω,漏電流0.1nA,導(dǎo)通速率0.275μs,串行控制多路轉(zhuǎn)換器)
中文描述: 串行控制、低電壓、8通道和雙4通道多路復(fù)用器
文件頁數(shù): 1/20頁
文件大?。?/td> 214K
代理商: MAX349
_______________General Desc ription
The MAX349/MAX350 are 8-channel and dual 4-channel
serially controlled multiplexers (muxes). These muxes
conduct equally well in either direction. On-resistance
(100
max) is matched between switches to 16
max
and is flat (10
max) over the specified signal range.
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.
Upon power-up, all switches are off, and the internal
shift registers are reset to zero.
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.
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.
________________________Applic ations
Serial Data-Acquisition
Industrial and Process-
Systems
Control Systems
Avionics
ATE Equipment
Audio Signal Routing
Networking
____________________________Features
o
SPI/QSPI, Microwire-Compatible Serial
Interface
o
8 Separately Controlled SPST Switches
o
Single 8-to-1 Mux (MAX349)
Dual 4-to-1 Mux (MAX350)
o
100
Signal Paths with ±5V Supplies
o
Rail-to-Rail Signal Handling
o
Asynchronous RESET Input
o
±2.7V to ±8V Dual Supplies
+2.7V to +16V Single Supply
o
>2kV ESD Protection per Method 3015.7
o
TTL/CMOS-Compatible Inputs (with +5V or ±5V
Supplies)
M
S erially Controlled, Low-Voltage,
8-Channel/Dual 4-Channel Multiplexers
________________________________________________________________ Maxim Integrated Products
Call toll free 1-800-998-8800 for free samples or literature.
1
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
CS
RESET
DOUT
V-
GND
DIN
V+
SCLK
TOP VIEW
N.C.
NO7
NO6
NO5
NO2
NO1
NO0
COM
10
9
NO4
NO3
DIP/SO
MAX349
LOGIC
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
CS
RESET
DOUT
V-
GND
DIN
V+
SCLK
COMB
NO0B
NO1B
NO2B
NO2A
NO1A
NO0A
COMA
10
9
NO3B
NO3A
DIP/SO
MAX350
LOGIC
N.C. = NOT INTERNALLY
CONNECTED
SPI and QSPI are trademarks of Motorola, Inc. Microwire is a trademark of National Semiconductor Corp.
___________________________________Pin Configurations/Func tional Diagrams
19-0451; Rev 0; 12/95
PART
MAX349
CPN
MAX349CWN
MAX349CAP
MAX349C/D
0°C to +70°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
TEMP. RANGE
PIN-PACKAGE
18 Plastic DIP
18 Wide SO
20 SSOP
Dice*
______________Ordering Information
Ordering Information continued at end of data sheet.
* Contact factory for dice specifications.
Pin Configurations continued at end of data sheet.
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