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 applications.
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 frequencies
from 32.768kHz to 10MHz. See Table 1 in the full data sheet for
standard frequencies and contact the factory for custom
frequencies.
The MAX7377 is available in a 5-pin SOT23 package.
Refer to the MAX7383 data sheet for frequencies
≥10MHz. The MAX7377 standard operating temperature
range is -40°C to +125°C. See the Applications
Information section of the full data sheet for the extended operating temperature range.
Key Features
Applications/Uses
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
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