MAX3372EEKAT datasheet(14/26 Pages) MAXIM

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Applications Information

Power-Supply Decoupling

To reduce ripple and the chance of transmitting incor-

rect data, bypass VL and VCC to ground with a 0.1µF

capacitor. See the

Typical Operating Circuit. To ensure

full ±15kV ESD protection, bypass VCC to ground with a

1µF capacitor. Place all capacitors as close to the

power-supply inputs as possible.

I2C Level Translation

The MAX3373E–MAX3376E, MAX3378E/MAX3379E

and MAX3390E–MAX3393E level-shift the data present

on the I/O lines between +1.2V and +5.5V, making

them ideal for level translation between a low-voltage

ASIC and an I2C device. A typical application involves

interfacing a low-voltage microprocessor to a 3V or 5V

D/A converter, such as the MAX517.

Push-Pull vs. Open-Drain Driving

All devices in the MAX3372E–MAX3379E and

MAX3390E–MAX3393E family may be driven in a push-

pull configuration. The MAX3373E–MAX3376E/

MAX3378E/MAX3379E and MAX3390E–MAX3393E

include internal 10k

Ω resistors that pull up I/O VL_ and

I/O VCC_ to their respective power supplies, allowing

operation of the I/O lines with open-drain devices. See

the

Timing Characteristics table for maximum data rates

when using open-drain drivers.

MAX3372E–MAX3379E/MAX3390E–MAX3393E

±15kV ESD-Protected, 1µA, 16Mbps, Dual/Quad

Low-Voltage Level Translators in UCSP

Maxim Integrated

tr = 0.7ns to 1ns

30ns

60ns

100%

90%

10%

Figure 4b. IEC 1000-4-2 ESD Generator Current Waveform

CHARGE-CURRENT-

LIMIT RESISTOR

DISCHARGE

RESISTANCE

STORAGE

CAPACITOR

150pF

RC 50M

Ω to 100MΩ

RD 330

HIGH-

VOLTAGE

SOURCE

DEVICE-

UNDER-

TEST

Figure 4a. IEC 1000-4-2 ESD Test Model

MAX3378E–MAX3383E

THREE-STATE

I/O VL_

DATA

I/O VCC_

0.1

µF

0.1

µF

+3.3V

+1.8V

VCC

+3.3V

SYSTEM

+1.8V

SYSTEM

CONTROLLER

Typical Operating Circuit

MAX3372EEKAT Datasheet(PDF) 14 Page - Maxim Integrated Products

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