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參數(shù)資料
| 型號(hào)： | MAX7377 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Silicon Oscillator with Low-Power Frequency Switching |
| 中文描述： | 硅振蕩器，提供低功耗頻率切換 |
| 文件頁數(shù)： | 1/9頁 |
| 文件大小： | 615K |
| 代理商： | MAX7377 |
General Description
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 applica-
tions. 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 fre-
quencies from 32.768kHz to 10MHz. See Table 1 for
standard frequencies and contact the factory for cus-
tom frequencies.
The MAX7377 is available in a 5-pin SOT23 package.
Refer to the MAX7383 data sheet for frequencies
≥
10MHz. The MAX7377 standard operating tempera-
ture range is -40
°
C to +125
°
C. See the
Applications
Information
section for the extended operating temper-
ature range.
Applications
Handheld Products
Portable Equipment
Microcontroller Systems
White Goods
Automotive
Consumer Products
Appliances and Controls
Features
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
±
10mA Clock-Output Drive Capability
2% Initial Accuracy
±
50ppm/°C Temperature Coefficient
50% Duty Cycle
5ns Output Rise and Fall Time
Low Jitter: 160ps
(P-P)
at 8MHz (No PLL)
3mA Fast-Mode Operating Current (8MHz)
13μA Slow-Mode Operating Current (32kHz)
-40°C to +125°C Temperature Range
M
Silicon Oscillator with Low-Power
Frequency Switching
________________________________________________________________
Maxim Integrated Products
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.
1
GND
V
CC
SPEED
1
5
E.C.
CLOCK
MAX7377
SOT23
TOP VIEW
2
3
4
Pin Configuration
Ordering Information
19-3474; Rev 0; 10/04
The first two letters are AX. See Table 1 at the end of the data
sheet for the two-letter code.
PART
TEMP RANGE
-40
°
C to +125
°
C
PIN-PACKAGE
5 SOT23-5
M AX7377AX _ _- T
Typical Application Circuit appears at end of data sheet.
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