MAX7384

19-3493; Rev 0; 11/04 Silicon Oscillator with Low-Power Frequency Switching and Reset Output General Description The MAX7384 dual-speed silicon oscillator replaces ceramic resonators, crystals, and crystal-oscillator modules as the primary and secondary clock source for microcontrollers in 3V, 3.3V, and 5V applications. The MAX7384 features a factory-programmed high-speed oscillator, a 32.768kHz oscillator, a clock-selector input, and a µP power-on-reset (POR) supervisor. The clock output can be switched at any time between the highspeed clock and the 32.768kHz clock for low-power operation. Switchover is synchronized internally to prowww.DataSheet4U.com vide glitch-free clock switching. Unlike typical crystal and ceramic-resonator oscillator circuits, the MAX7384 is resistant to vibration and EMI. The high-output-drive current and absence of highimpedance nodes makes the oscillator less susceptible to dirty or humid operating conditions. With a wide operating temperature range as standard, the MAX7384 is a good choice for demanding home appliance, industrial, and automotive environments. The MAX7384 is available with factory-programmed frequencies ranging from 10MHz to 16MHz. See Table 1 for standard frequencies and contact the factory for custom frequencies. Refer to the MAX7378 data sheet for frequencies less than 10MHz. The MAX7384 is available in an 8-pin µMAX® package. The MAX7384 standard operating temperature range is -40°C to +125°C. See the Applications Information...