19-3491; Rev 1; 3/07
Silicon Oscillator with Reset Output
and Enable
General Description
Features
The MAX7382 silicon oscillator replaces ceramic res-
onators, crystals, and crystal-oscillator modules as the
clock source for microcontrollers in 3V, 3.3V, and 5V
applications. The MAX7382 features a factory-pro-
grammed oscillator, a microprocessor (µP) power-on-
reset (POR) supervisor, and a clock enable input.
♦ 2.7V to 5.5V Operation
♦ 10MHz to 16MHz Oscillator
♦ Integrated POR (Factory Programmable)
10mꢀ ꢁlocꢂ Oꢃtpꢃt ꢄriꢅe ꢁapability
♦
♦ ꢁlocꢂ Enable Inpꢃt
♦ 2.5% Initial ꢀccꢃracy
Unlike typical crystal and ceramic-resonator oscillator
circuits, the MAX7382 is resistant to vibration and EMI.
The high-output-drive current and absence of high-
impedance nodes makes the oscillator less susceptible
to dirty or humid operating conditions. With a wide
operating temperature range, the MAX7382 is a good
choice for demanding home appliance and automotive
environments.
♦
100ppmꢆ/ꢁ Freꢇꢃency ꢄriꢈt
♦ 50% ꢄꢃty ꢁycle
♦ 5ns Oꢃtpꢃt Rise and Fall Time
♦ Typical 4.5mꢀ Operating ꢁꢃrrent at 16MHz
♦ Typical 0.5µꢀ Shꢃtdown Sꢃpply ꢁꢃrrent
♦ -40/ꢁ to +125/ꢁ Temperatꢃre Range
♦ Small 5-Pin SOT23 Pacꢂage
The MAX7382 is available with factory-programmed fre-
quencies ranging from 10MHz to 16MHz. See Table 2
for standard frequencies and contact the factory for
custom frequencies and POR thresholds.
The MAX7382 is available in a 5-pin SOT23 package.
The MAX7382 operating temperature range is -40°C to
+125°C.
Ordering Information
PIN-
PꢀꢁKꢀGE
RESET
OUTPUT
Applications
PꢀRT*
TEMP RꢀNGE
White Goods
Active-low
push-pull
MAX7382B_ _ _-T -40 C to +125 C 5 SOT23-5
Automotive
Consumer Products
Appliances and Controls
Handheld Products
Portable Equipment
Microcontroller Systems
5 SOT23-5 Open drain
MꢀX7382ꢁ_ _ _-T -40 ꢁ to +125 ꢁ
*Standard version is shown in bold. The first letter after the part
number designates the reset output option. Insert the letter
corresponding to the desired reset threshold level from Table 1
in the next position. Insert the two-letter code from Table 2 in
the remaining two positions for the desired frequency range.
Table 1 and Table 2 are located at the end of the data sheet.
Typical Operating Circuit
V
CC
2.7V TO 5.5V
0.1
F
V
CC
OSC1
CLOCK
OSC2
RST
MAX7382
ENABLE
RST
C
GND
Pin Configuration appears at end of data sheet.
________________________________________________________________ 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.