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參數(shù)資料
| 型號： | MAX7387CMVB |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | System Monitoring Oscillator with Watchdog and Power Fail |
| 中文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO10 |
| 封裝： | 3 X 3 MM, MO-187CBA, MICRO, SOP-10 |
| 文件頁數(shù)： | 14/14頁 |
| 文件大?。?/td> | 680K |
| 代理商： | MAX7387CMVB |
MAX7387/MAX7388
System Monitoring Oscillator with
Watchdog and Power Fail
_______________________________________________________________________________________
9
matching issues when using the MAX7387/MAX7388.
Operate the MAX7387/MAX7388 and microcontroller
(or other clock input device) from the same supply volt-
age level. Refer to the microcontroller data sheet for
clock-input compatibility with external clock signals.
The MAX7387/MAX7388 require no biasing compo-
nents or load capacitance. When using the MAX7387/
MAX7388 to retrofit a crystal oscillator, remove all bias-
ing components from the oscillator input.
Power-Supply Consideration
The MAX7387/MAX7388 operate with power-supply
voltages in the 2.7V to 5.5V range. Power-supply
decoupling is needed to maintain the power-supply
rejection performance of the MAX7387/MAX7388.
Bypass VCC to GND with a 0.1F surface-mount ceramic
capacitor. Mount the bypass capacitor as close to the
device as possible. If possible, mount the MAX7387
/MAX7388 close to the microcontroller’s decoupling
capacitor so that additional decoupling is not required.
A larger-value bypass capacitor is recommended if the
MAX7387/MAX7388 are to operate with a large capacitive
load. Use a bypass capacitor value of at least 1000
times that of the output load capacitance.
Output Jitter
The MAX7387/MAX7388s’ jitter performance is given in
the Electrical Characteristics table as a peak-to-peak
value obtained by observing the output of the device for
20s with a 500MHz oscilloscope. Jitter measurements
are approximately proportional to the period of the out-
put frequency of the device. Thus, a 4MHz part has
approximately twice the jitter value of an 8MHz part.
The jitter performance of all clock sources degrades in
the presence of mechanical and electrical interference.
The MAX7387/MAX7388 are immune to vibration,
shock, and EMI influences, and thus provide a consid-
erably more robust clock source than crystal- or ceram-
ic-resonator-based oscillator circuits.
Table 2. POR Voltage
POWER-ON RESET VOLTAGE (VTH)
r
4.38
M
3.96
J
3.44
N
3.34
P
3.13
Q
2.89
S
2.82
V
2.5
X
Table 3. Reset Output Type
OUTPUT TYPE
s
Push-pull RST
A
Push-pull RST
B
Open-drain RST
C
Table 4. Clock Output Frequency
CLOCK FREQUENCY (fCLOCK) (MHz)
ff
4RD
8TP
12
VB
16
WB
Note: Contact factory for other frequencies.
Note: Standard values are shown in bold. Contact factory for
other POR voltages.
Note: Other versions with different features are available. Refer to the MAX7389/MAX7390 and MAX7391 data sheets.
PART
FREQUENCY
RANGE (MHz)
RESET
FUNCTION
WATCHDOG INPUT (WDI)/
WATCHDOG OUTPUT (WDO)
POWER-FAIL INPUT (PFI)/
POWER-FAIL OUTPUT (PFO)
SPEED
PIN-
PACKAGE
MAX7387
1 to 16
Yes
Yes/yes
—
10 MAX
MAX7388
1 to 16
Yes
Yes/no
No/yes
—
8 MAX
MAX7389
1 to 16
Yes
Yes/yes
—
8 MAX
MAX7390
1 to 16
Yes
Yes/no
—
Yes
8 MAX
MAX7391
1 to 16
Yes
—
Yes/yes
Yes
8 MAX
Note: Standard values are shown in bold. Contact factory for
other output types.
Selector Guide
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX7387CMVB-T | 功能描述:計時器和支持產(chǎn)品 System Monitoring Oscillator RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| MAX7387CMWB | 功能描述:時鐘發(fā)生器及支持產(chǎn)品 RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-56 |
| MAX7387CMWB-T | 制造商:Maxim Integrated Products 功能描述:SYSTEM MONITORING OSCILLATOR WITH W - Tape and Reel |
| MAX7387CSAC | 功能描述:時鐘發(fā)生器及支持產(chǎn)品 RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-56 |
| MAX7387CSRD | 功能描述:時鐘發(fā)生器及支持產(chǎn)品 RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-56 |
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