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| 型号： | AS1908-C23-T |
| 厂商： | ams |
| 文件页数： | 1/10页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR ACT HIGH SOT23-3 |
| 标准包装： | 1 |
| 类型： | 简单复位/加电复位 |
| 监视电压数目： | 1 |
| 输出： | 推挽式，图腾柱 |
| 复位： | 高有效 |
| 复位超时： | 最小为 100 ms |
| 电压 - 阀值： | 2.3V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | TO-236-3，SC-59，SOT-23-3 |
| 供应商设备封装： | SOT-23-3 |
| 包装： | 标准包装 |
| 其它名称： | AS1908-C23-TDKR |
AS1907, AS1908 , AS1909
L o w - Vo l t a g e M i c r o p r o c e s s o r R e s e t C i r c u i t s
1 General Description
2 Key Features
The AS1907/AS1908/AS1909 microprocessor supervisory circuits
are ideal for monitoring the supply voltage of digital systems and
?? 3 Output Types: Push/Pull
Open Drain RESETN
RESET, Push Pull RESETN, and
microprocessors.
The devices are designed to initiate a reset if the supply voltage goes
below a predefined threshold. The duration of the reset is either 1.5,
set threshold (see Ordering Information on page 9) .
The devices are available as the standard products listed in Table 1 .
Table 1. Standard Products
?? Reset Threshold Range: 1.6 to 2.5V (~100mV increments)
?? RESET/RESETN:
- Valid to V CC = 0.7V (AS1907 and AS1908)
- Valid to V CC = 1.0V (AS1909)
?? Reset Pulse Widths: 1, 20, and 100ms
?? Supply Voltage Range: +0.7 to +3.6V
Model
AS1907
AS1908
AS1909
Output Type
Push/Pull
Push/Pull
Open-Drain
Reset Type
Active-Low
Active-High
Active-Low
?? Supply Current Range: 2.6 to 7.0μA
?? Power Supply Transient Immunity
?? Requires No External Components
?? Operating Temperature Range: -40 to +125oC
?? 3-pin SOT23 Package
The reset thresholds are factory-set between 1.6 and 2.5V in steps
of approximately 100mV (see Table 5 on page 7) .
The devices exhibit excellent reliability, and can reduce system costs
by eliminating the need for external components. The extremely low
current consumption makes the devices ideal for use in portable
applications.
The integrated reset comparator was specifically designed to ignore
fast transients on V CC .
The devices are available in a 3-pin SOT23 package.
Figure 1. Application Diagrams
3 Applications
The devices are ideal for use in cordless and mobile phones, MP3
players, CD and DVD players, PDAs, handheld computers, digital
cameras, hard drives, and any other application where power supply
supervisory control is required.
V CC
V CC
V CC
V CC 3
V CC 3
V CC 3
V CC 3
V CC 3
V CC 3
Micro-
processor
Micro-
processor
Micro-
processor
AS1907
RESETN
2
RESET I/O
AS1908
2
RESET
RESET I/O
AS1909
2
RESETN
RESET I/O
GND 1
GND 1
GND 1
GND 1
GND 1
GND 1
www.ams.com/Supervisors/AS1907-09
Revision 1.8
1 - 10
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AS1908C23-T | 制造商:ams 功能描述:IC SUPERVISOR ACT HIGH SOT23-3 |
| AS1909 | 制造商:AMSCO 制造商全称:austriamicrosystems AG 功能描述:Low-Voltage Microprocessor Reset Circuits |
| AS19090FLF | 制造商:TT Electronics / IRC 功能描述:AS19090FLF |
| AS19090HLF | 制造商:TT Electronics / IRC 功能描述:AS19090HLF |
| AS19090JLF | 制造商:TT Electronics / IRC 功能描述:AS19090JLF |
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