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部品型式

MAX378CPE

製品説明
仕様・特性

19-1902; Rev 1; 8/94 High-Voltage, Fault-Protected Analog Multiplexers ____________________________Features The MAX378 8-channel single-ended (1-of-8) multiplexer and the MAX379 4-channel differential (2-of-8) multiplexer use a series N-channel/P-channel/N-channel structure to provide significant fault protection. If the power supplies to the MAX378/MAX379 are inadvertently turned off while input voltages are still applied, all channels in the muxes are turned off, and only a few nanoamperes of leakage current will flow into the inputs. This protects not only the MAX378/MAX379 and the circuitry they drive, but also the sensors or signal sources that drive the muxes. o o o o The series N-channel/P-channel/N-channel protection structure has two significant advantages over the simple current-limiting protection scheme of the industry’s firstgeneration fault-protected muxes. First, the Maxim protection scheme limits fault currents to nanoamp leakage values rather than many milliamperes. This prevents damage to sensors or other sensitive signal sources. Second, the MAX378/MAX379 fault-protected muxes can withstand a continuous ±60V input, unlike the first generation, which had a continuous ±35V input limitation imposed by power dissipation considerations. o o o o All digital inputs have logic thresholds of 0.8V and 2.4V, ensuring both TTL and CMOS compatibility without requiring pull-up resistors. Break-before-make operation is guaranteed. Power dissipation is less than 2mW. ________________________Applications Data Acquisition Systems Industrial and Process Control Systems Avionics Test Equipment Signal Routing Between Systems o o Fault Input Voltage ±75V with Power Supplies Off Fault Input Voltage ±60V with ±15V Power Supplies All Switches Off with Power Supplies Off On Channel Turns OFF if Overvoltage Occurs on Input or Output Only Nanoamperes of Input Current Under All Fault Conditions No Increase in Supply Currents Due to Fault Conditions Latchup-Proof Construction Operates from ±4.5V to ±18V Supplies All Digital Inputs are TTL and CMOS Compatible Low-Power Monolithic CMOS Design ______________Ordering Information TEMP. RANGE PART PIN-PACKAGE 0°C to +70°C MAX378CPE 16 Plastic DIP MAX378CWG 0°C to +70°C 24 Wide SO MAX378CJE 0°C to +70°C 16 CERDIP MAX378C/D 0°C to +70°C Dice** MAX378EPE -40°C to +85°C 16 Plastic DIP MAX378EWG -40°C to +85°C 24 Wide SO MAX378EJE -40°C to +85°C 16 CERDIP MAX378MJE -55°C to +125°C 16 CERDIP MAX378MLP -55°C to +125°C 20 LCC* Ordering Information continued at end of data sheet. * Contact factory for availability. **The substrate may be allowed to float or be tied to V+ (JI CMOS). __________________________________________________________Pin Configurations TOP VIEW A0 1 16 A1 A0 1 16 A1 EN 2 15 A2 EN 2 15 GND V- 3 14 GND V- 3 IN1 4 MAX378 14 V+ MAX379 13 V+ IN1A 4 IN2 5 12 IN5 IN2A 5 12 IN2B IN3 6 11 IN6 IN3A 6 11 IN3B IN4 7 10 IN7 IN4A 7 10 IN4B OUT 8 9 IN8 DIP Pin Configurations continued at end of data sheet. OUTA 8 13 IN1B 9 OUTB DIP ________________________________________________________________ Maxim Integrated Products Call toll free 1-800-998-8800 for free samples or literature. 1 MAX378/MAX379 _______________General Description

ブランド

MAXIM

会社名

Maxim Integrated

本社国名

U.S.A

事業概要

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