MAX7377AXTP(2004) View Datasheet(PDF) - Maxim Integrated

Part Name

Description

Manufacturer

MAX7377AXTP
(Rev.:2004)

Silicon Oscillator with Low-Power Frequency Switching

Maxim Integrated 

19-3474; Rev 0; 10/04

Silicon Oscillator with Low-Power

Frequency Switching

General Description

The MAX7377 dual-speed silicon oscillator with reset is

a replacement for ceramic resonators, crystals, crystal

oscillator modules, and discrete reset circuits. The

device provides the primary and secondary clock

source for microcontrollers in 3V, 3.3V, and 5V applica-

tions. The MAX7377 features a factory-programmed

high-speed oscillator, a 32.768kHz oscillator, and a

clock selector input. The clock output can be switched

at any time between the high-speed clock and the

32.768kHz clock for low-power operation. Switchover is

synchronized internally to provide glitch-free clock

switching.

Unlike typical crystal and ceramic resonator oscillator

circuits, the MAX7377 is resistant to vibration and EMI.

The high-output-drive current and absence of high-

impedance nodes make the oscillator less susceptible

to dirty or humid operating conditions. With a wide

operating temperature range as standard, the MAX7377

is a good choice for demanding home appliance,

industrial, and automotive environments.

The MAX7377 is available in factory-programmed fre-

quencies from 32.768kHz to 10MHz. See Table 1 for

standard frequencies and contact the factory for cus-

tom frequencies.

The MAX7377 is available in a 5-pin SOT23 package.

Refer to the MAX7383 data sheet for frequencies

≥10MHz. The MAX7377 standard operating tempera-

ture range is -40°C to +125°C. See the Applications

Information section for the extended operating temper-

ature range.

Features

♦ 2.7V to 5.5V Operation

♦ Accurate High-Speed 600kHz to 10MHz Oscillator

♦ Accurate Low-Speed 32kHz Oscillator

♦ Glitch-Free Switch Between High Speed and Low

Speed at Any Time

♦ ±10mA Clock-Output Drive Capability

♦ 2% Initial Accuracy

♦ ±50ppm/°C Temperature Coefficient

♦ 50% Duty Cycle

♦ 5ns Output Rise and Fall Time

♦ Low Jitter: 160ps(P-P) at 8MHz (No PLL)

♦ 3mA Fast-Mode Operating Current (8MHz)

♦ 13µA Slow-Mode Operating Current (32kHz)

♦ -40°C to +125°C Temperature Range

Ordering Information

PART

TEMP RANGE PIN-PACKAGE

MAX7377AX_ _-T

-40°C to +125°C 5 SOT23-5

The first two letters are AX. See Table 1 at the end of the data

sheet for the two-letter code.

Applications

White Goods

Handheld Products

Automotive

Portable Equipment

Consumer Products

Microcontroller Systems

Appliances and Controls

TOP VIEW

Pin Configuration

CLOCK 1

5 E.C.

MAX7377

GND 2

Typical Application Circuit appears at end of data sheet.

SPEED 3

4 VCC

SOT23

________________________________________________________________ Maxim Integrated Products 1

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

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