MAX7383

Features:

2.7V to 5.5V Operation
High-Speed Oscillator from 10MHz to 32MHz Low-Speed 32kHz Oscillator Glitch-Free Clock-Speed Switching
±10mA Clock-Output Drive Capability
2.5% Initial Accuracy
±50ppm/°C (typ) Frequency Drift
50% Duty Cycle
5ns Output Rise and Fall Time
Low Jitter: 80psP-P at 16MHz
4mA Operating Current at 16MHz
13A, 32kHz Operating Current
-40°C to +125°C Temperature Range
Small 5-Pin SOT23 Package


Application

White Goods
Automotive
Consumer Products
Appliances and Controls
Handheld Products
Portable Equipment
Microcontroller Systems


Specifications

VCC to GND.............................................................-..0.3V to +6.0V
All Other Pins to GND........................................-0.3V to (V+ + 0.3V)
CLOCK Current ....................................................................±50mA
Input Current (SPEED).........................................................±50mA
Continuous Power Dissipation (T_A = +70°C)
  5-Pin SOT23 (derate 7.1mW/°C above +70°C)....571mW (U5-2)
Operating Temperature Range ..........................-55°C to +135°C
Junction Temperature.........................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) ...................................+300°C

Description

The MAX7383 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 MAX7383 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 of MAX7383 is synchronized internally to provide glitch-free clock switching.

Unlike typical crystal and ceramic-resonator oscillator circuits, the MAX7383 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 MAX7383 is a good choice for demanding home appliance and automotive environments.

The MAX7383 is available with factory-programmed frequencies ranging from 10MHz to 32MHz. See Table 1 for standard frequencies and contact the factory for custom frequencies. Refer to the MAX7377 data sheet for frequencies less than 10MHz.

The MAX7383 is available in a 5-pin SOT23 package.The MAX7383 standard operating temperature range is -40°C to +125°C. See the Applications Information section for extended operating temperature range.