MAX994EUD データシートの表示（PDF） - Maxim Integrated

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MAX994EUD

Micropower, Low-Voltage, UCSP/SC70, Rail-to-Rail I/O Comparators

Maxim Integrated 

Micropower, Low-Voltage, UCSP/SC70,

Rail-to-Rail I/O Comparators

Zero-Crossing Detector

Figure 3 shows a zero-crossing detector application.

The MAX985’s inverting input is connected to ground,

and its noninverting input is connected to a 100mVP-P

signal source. As the signal at the noninverting input

crosses 0V, the comparator’s output changes state.

Logic-Level Translator

Figure 4 shows an application that converts 5V logic lev-

els to 3V logic levels. The MAX986 is powered by the 5V

supply voltage, and the pullup resistor for the MAX986’s

open-drain output is connected to the 3V supply voltage.

This configuration allows the full 5V logic swing without

creating overvoltage on the 3V logic inputs. For 3V to 5V

logic-level translation, simply connect the 3V supply to

VCC and the 5V supply to the pullup resistor.

UCSP Applications Information

For the latest application details on UCSP construction,

dimensions, tape carrier information, PCB techniques,

bump-pad layout, and recommended reflow tempera-

ture profile, as well as the latest information on reliability

testing results, refer to the Application Note: UCSP—A

Wafer-Level Chip-Scale Package on Maxim’s web site

at www.maxim-ic.com/ucsp.

100mV

3 IN+

4 IN-

VCC

2

VCC

OUT 1

MAX985

VEE

5

Figure 3. Zero-Crossing Detector

100kΩ

4 IN-

100kΩ

3 IN+

5V (3V) LOGIC IN

5V (3V)

2

VCC

3V (5V)

RPULLUP

OUT 1

3V (5V)

LOGIC OUT

MAX986

VEE

5

Figure 4. Logic-Level Translator

9

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