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| 型号： | MAX6864UK26D3S |
| 厂商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分类： | 电源管理 |
| 英文描述： | Nanopower µP Supervisory Circuits with Manual Reset and Watchdog Timer |
| 中文描述： | 1-CHANNEL POWER SUPPLY MANAGEMENT CKT, PDSO5 |
| 封装： | MO-178AA, SOT-23, 5 PIN |
| 文件页数： | 1/17页 |
| 文件大小： | 362K |
| 代理商： | MAX6864UK26D3S |
General Description
The MAX6854–MAX6869 ultra-low-current (170nA, typ)
microprocessor (P) supervisory circuits combine volt-
age monitoring, watchdog timer, and manual reset input
functions in a 5-pin SOT23 package. These devices
assert a reset signal whenever the monitored voltage
drops below the factory-trimmed reset threshold voltage,
manual reset is asserted, or the watchdog timer expires.
The reset output remains asserted for a minimum timeout
period after VCC rises above the reset threshold and
manual reset is deasserted. Factory-trimmed reset
threshold voltages are offered from +1.575V to +4.625V
in approximately 100mV increments (see Threshold
Suffix Guide). Each device is offered with six minimum
reset timeout options, ranging from 10ms to 1200ms.
The MAX6854–MAX6869 are offered in a variety of con-
figurations (see Selector Guide). The MAX6854–
MAX6856 and MAX6861–MAX6869 provide a manual
reset input, MR. The MAX6864–MAX6869 offer a watch-
dog timer that monitors activity at the WDI input for code
execution errors. The MAX6864–MAX6869 offer watch-
dog timeout options of 3.3s or 209s (typ). The
MAX6861–MAX6863 feature a pin-selectable reset delay
period of 10ms or 150ms (min). Push-pull active-low,
push-pull active-high, and open-drain active-low reset
outputs are available.
Applications
Portable/Battery-Powered Equipment
PDAs/Cell Phones
MP3 Players/Pagers
Glucose Monitors/Patient Monitors
Features
Ultra-Low 170nA (typ) Supply Current
Reset Thresholds from +1.575V to +4.625V in
Approximately 100mV Increments
6 Minimum Reset Timeout Period Options from
10ms to 1200ms
Manual Reset Option
Watchdog Timer Option
Pin-Selectable 10ms/150ms (min) Reset Timeout
Period (MAX6861/MAX6862/MAX6863)
Immune to Short VCC Transients
Guaranteed Reset Valid to VCC = +1.1V
Three Reset Output Options:
Push-Pull RESET
Push-Pull RESET
Open-Drain RESET
No External Components
Small 5-Pin SOT23 Package
Pin Compatible to the TPS3836–TPS3838
(MAX6861/MAX6862/MAX6863)
MAX6854–MAX6869
Nanopower P Supervisory Circuits with
Optional Manual Reset, Watchdog Timer
________________________________________________________________ Maxim Integrated Products
1
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
MAX6854UK_ _D_-T*
-40°C to +85°C
5 SOT23-5
MAX6855UK_ _D_-T*
-40°C to +85°C
5 SOT23-5
19-3139; Rev 0; 2/04
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.
Ordering Information continued on last page.
Insert reset threshold suffix (see Table 2, Threshold Suffix
Guide) after UK. Insert the number corresponding to the
desired reset timeout period (see Table 4, Reset Timeout
Period) after “D.”
Note: Sample stock is generally held on standard versions
only (see Table 5, Standard Versions Table). Standard versions
have an order increment of 2500 pieces. Nonstandard versions
have an order increment of 10,000 pieces. Contact factory for
availability of nonstandard versions.
*Future product—Contact factory for availability.
Pin Configurations appear at the end of data sheet.
Selector Guide appears at the end of data sheet.
Typical Operating Circuit
MAX6864
MAX6867
P
VCC
GND
MANUAL
RESET
I/O
VCC
0.1F
RESET
MR
WDI
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6864UK26D3S+ | 制造商:Maxim Integrated Products 功能描述:PROCESSOR SUPERVISOR 2.625V 7UA 5PIN SOT-23 - Rail/Tube |
| MAX6864UK26D3S+T | 功能描述:监控电路 Single nPower Supervisor RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX6864UK26D3S-T | 功能描述:监控电路 RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX6864UK26D4L+T | 功能描述:监控电路 Single nPower Supervisor RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX6864UK26D4L-T | 功能描述:监控电路 RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
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