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参数资料
| 型号： | MAX7391CNTP |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 时钟产生/分配 |
| 英文描述： | 8 MHz, OTHER CLOCK GENERATOR, PDSO8 |
| 封装： | MO-187C-AA, MICRO, SOP-8 |
| 文件页数： | 1/12页 |
| 文件大小： | 594K |
| 代理商： | MAX7391CNTP |
General Description
The MAX7391 replaces ceramic resonators, crystals,
and supervisory functions for microcontrollers in 3.3V
and 5V applications.
The MAX7391 provides a clock source, reset, and
power-fail functions. The programmable power-fail func-
tion provides early warning of power failure and is con-
figurable to detect either an external voltage or the VCC
supply to the device.
The clock output can be switched between normal and
half-speed operation. This functionality allows the micro-
controller to operate at reduced power and may be
used to extend the time available to perform house-
keeping tasks, such as writing data to flash during a
power failure. Connecting the power-fail output to the
SPEED input reduces clock speed automatically during
power-fail events.
The MAX7391 clock output is factory programmed to a
frequency in the 1MHz to 16MHz range. Four standard
frequencies are available. Other frequencies are avail-
able upon request. The maximum operating supply cur-
rent is 5.5mA (typ) with a clock frequency of 12MHz.
Unlike typical crystal and ceramic resonator oscillator
circuits, the MAX7391 is resistant to EMI and vibration,
and operates reliably at high temperatures. The high-
output drive current and absence of high-impedance
nodes make the oscillator invulnerable to dirty or humid
operating conditions.
The MAX7391 is available in an 8-pin MAX package.
The MAX7391 standard operating temperature range is
from -40°C to +125°C.
Applications
White Goods
Automotive
Appliances and Controls
Handheld Products
Portable Equipment
Microcontroller Systems
Features
Robust Microcontroller Clock and Supervisory
Functions in a Single Package
Integrated Reset and Power-Fail Functions
Speed Select
+2.7V to +5.5V Operation
Factory-Trimmed Oscillator
Reset Valid Down to 1.1V Supply Voltage
±10mA Clock-Output Drive Current
±4% Total Accuracy for -40°C to +125°C
±2.75% Total Accurac for 0°C to +85°C
5.5mA Operating Current (12MHz Version)
-40°C to +125°C Temperature Range
Surface-Mount Package
1MHz to 16MHz Factory Preset Frequency Range
MAX7391
Speed-Switching Clock Generator
with Power Fail
________________________________________________________________ Maxim Integrated Products
1
19-3981; Rev 0; 1/06
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.
SPEED
PFO
GND
1
2
8
7
CLOCK
RST/RST
VCC
N.C.
PFI
TOP VIEW
MAX
3
4
6
5
MAX7391
Pin Configuration
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
PKG
CODE
MAX7391srff
-40°C to +125°C
8 MAX
U8-1
Note: “s” is a placeholder for the reset output type. Insert the
symbol found in Table 2 in the place of “s.” “r” is a placeholder
for the power-on reset (POR) voltage. Insert the symbol found in
Table 1 in the place of “r.” “ff” is a placeholder for the nominal
output frequency. Insert the symbol found in Table 3 in the
place of “ff.” For example, MAX7391CMTP describes a device
with 4.38V reset level, open-collector RST output, and a clock
output frequency of 8MHz.
Typical Application Circuit, Functional Diagram, and Selector
Guide appear at end of data sheet.
MAX is a registered trademark of Maxim Integrated Products, Inc.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX7391CSAC | 功能描述:时钟发生器及支持产品 RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56 |
| MAX7391CSRD | 功能描述:时钟发生器及支持产品 RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56 |
| MAX7391CSRD-T | 制造商:Maxim Integrated Products 功能描述:SPEED-SWITCHING CLOCK GENERATOR WIT - Tape and Reel |
| MAX7391CSTP | 功能描述:时钟发生器及支持产品 RoHS:否 制造商:Silicon Labs 类型:Clock Generators 最大输入频率:14.318 MHz 最大输出频率:166 MHz 输出端数量:16 占空比 - 最大:55 % 工作电源电压:3.3 V 工作电源电流:1 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:QFN-56 |
| MAX7391CSTP-T | 制造商:Maxim Integrated Products 功能描述:SPEED-SWITCHING CLOCK GENERATOR WIT - Tape and Reel |
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