Silicon Oscillator with Reset Output

6

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MAX7376

CLOCK

OSC1

OSC2

µC

RST

SUPPLY VOLTAGE

E.C.

RST/RST

Typical Application Circuit

The MAX7376 is relatively immune to vibration, shock,

and EMI influences, and thus provides a considerably

more robust clock source than crystal or ceramic res-

onator-based oscillator circuits.

Initial Power-Up and Operation

above the reset threshold. The reset output remains

asserted for 100µs after the reset threshold is reached.

Extended Temperature Operation

The MAX7376 was tested to +135°C during product

characterization and shown to function normally at

this temperature (see the Typical Operating

Characteristics). However, production test and qualifi-

cation is only performed from -40°C to +125°C at this

time. Contact the factory if operation outside this range

is required.

Power-Supply Considerations

The MAX7376 operates with a 2.7V and 5.5V power-

supply voltage. Good power-supply decoupling is

needed to maintain the power-supply rejection perfor-

0.1µF surface-mount ceramic capacitor. Mount the

bypass capacitor as close to the device as possible. If

possible, mount the MAX7376 close to the µC’s decou-

pling capacitor so that additional decoupling is not

required. A larger value bypass capacitor is recom-

mended if the MAX7376 is to operate with a large

capacitive load. Use a bypass capacitor value of at

least 1000 times that of the output load capacitance.

SUFFIX

RESET THRESHOLD (V)

R

2.57

M

4.29

SUFFIX

STANDARD FREQUENCY (MHz)

AA

32.768kHz

MG

1

OK

1.8432

QT

3.39545

QW

3.6864

RD

4

RH

4.1943

TP

8

Table 1. Standard Reset Threshold Levels

Table 2. Standard Frequencies

For all other reset threshold options, contact factory.

For all other reset threshold options, contact factory.