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| 型号： | ADM708AN |
| 厂商： | Analog Devices Inc |
| 文件页数： | 1/12页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR MPU 4.4V WD 8DIP |
| 标准包装： | 50 |
| 类型： | 简单复位/加电复位 |
| 监视电压数目： | 1 |
| 输出： | 推挽式，推挽式 |
| 复位： | 高有效/低有效 |
| 复位超时： | 最小为 160 ms |
| 电压 - 阀值： | 4.4V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 8-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 8-PDIP |
| 包装： | 管件 |
Low Cost Microprocessor
Supervisory Circuits
ADM705/ADM706/ADM707/ADM708
FEATURES
FUNCTIONAL BLOCK DIAGRAMS
Guaranteed RESET valid with V CC = 1 V
190 μA quiescent current
Precision supply voltage monitor
4.65 V (ADM705/ADM707)
4.40 V (ADM706/ADM708)
200 ms reset pulse width
Debounced TTL/CMOS manual reset input (MR)
Independent watchdog timer (ADM705/ADM706)
1.60 sec timeout (ADM705/ADM706)
Active high reset output (ADM707/ADM708)
Voltage monitor for power-fail or low battery warning
WATCHDOG
INPUT (WDI)
MR
V CC
POWER-FAIL
INPUT (PFI)
WATCHDOG
TRANSITION
DETECTOR
V CC
250 μ A
4.65V*
1.25V
WATCHDOG
TIMER
RESET AND
WATCHDOG
TIMEBASE
RESET
GENERATOR
ADM705/
ADM706
WATCHDOG
OUTPUT (WDO)
RESET
POWER-FAIL
OUTPUT (PFO)
Superior upgrade for MAX705 to MAX708
APPLICATIONS
Microprocessor systems
Computers
* VOLTAGE REFERENCE = 4.65V (ADM705), 4.40V (ADM706)
Figure 1. ADM705/ADM706
V CC
Controllers
Intelligent instruments
Critical microprocessor supply monitoring
MR
V CC
250 μ A
RESET
GENERATOR
RESET
RESET
POWER-FAIL
INPUT (PFI)
4.65V*
1.25V
ADM707/
ADM708
POWER-FAIL
OUTPUT (PFO)
* VOLTAGE REFERENCE = 4.65V (ADM707), 4.40V (ADM708)
Figure 2. ADM707/ADM708
GENERAL DESCRIPTION
The ADM705/ADM706/ADM707/ADM708 microprocessor
supervisory circuits are suitable for monitoring 5 V power
supplies/batteries and can also monitor microprocessor activity.
The ADM705/ADM706 provide power-supply monitoring
circuitry that generate a reset output during power-up, power-
down, and brownout conditions. The reset output remains
operational with V CC as low as 1 V. Independent watchdog
monitoring circuitry is also provided. This is activated if the
watchdog input has not been toggled within 1.60 seconds.
In addition, there is a 1.25 V threshold detector to warn of
power-failures, to detect low battery conditions, or to monitor an
additional power supply. An active low, debounced manual reset
input (MR) is also included.
Rev. G
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
The ADM705 and ADM706 are identical except for the reset
threshold monitor levels, which are 4.65 V and 4.40 V, respectively.
The ADM707 and ADM708 provide a similar functionality to
the ADM705 and ADM706 and only differ in that a watchdog
timer function is not available. Instead, an active high reset
output (RESET) is available as well as the active low reset output
(RESET). The ADM707 and ADM708 are identical except for
the reset threshold monitor levels, which are 4.65 V and 4.40 V,
respectively.
All parts are available in narrow 8-lead PDIP and 8-lead SOIC
packages.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 www.analog.com
Fax: 781.461.3113 ?2008 Analog Devices, Inc. All rights reserved.
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| ADM708ANZ | 功能描述:IC SUPERVISOR MPU 4.4V WD 8-DIP RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 标准包装:1 系列:- 类型:简单复位/加电复位 监视电压数目:1 输出:开路漏极或开路集电极 复位:高有效 复位超时:- 电压 - 阀值:1.8V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:6-TSOP（0.059"，1.50mm 宽）5 引线 供应商设备封装:5-TSOP 包装:剪切带 (CT) 其它名称:NCP301HSN18T1GOSCT |
| ADM708AR | 功能描述:IC SUPERVISOR MPU 4.4 WD 8SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 标准包装:400 系列:- 类型:备用电池电路 监视电压数目:1 输出:开路漏极，推挽式 复位:高有效/低有效 复位超时:最小为 35 ms 电压 - 阀值:4.65V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.295"，7.50mm 宽） 供应商设备封装:16-SOIC W 包装:带卷 (TR) 其它名称:ADM691ARZ-REEL7TR |
| ADM708ARM | 功能描述:IC SUPERVISOR MPU 4.4V WD 8-MSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 标准包装:400 系列:- 类型:备用电池电路 监视电压数目:1 输出:开路漏极，推挽式 复位:高有效/低有效 复位超时:最小为 35 ms 电压 - 阀值:4.65V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.295"，7.50mm 宽） 供应商设备封装:16-SOIC W 包装:带卷 (TR) 其它名称:ADM691ARZ-REEL7TR |
| ADM708ARM-REEL | 制造商:Analog Devices 功能描述:Processor Supervisor 4.4V 4.4V 8-Pin MSOP T/R 制造商:Analog Devices 功能描述:PROCESSOR SUPERVISOR 4.4V 250UA 8MSOP - Tape and Reel 制造商:Rochester Electronics LLC 功能描述:RESET GENERATOR I.C. - Tape and Reel |
| ADM708ARMZ | 功能描述:IC SUPERVISOR MPU 4.4V WD 8-MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 标准包装:400 系列:- 类型:备用电池电路 监视电压数目:1 输出:开路漏极，推挽式 复位:高有效/低有效 复位超时:最小为 35 ms 电压 - 阀值:4.65V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.295"，7.50mm 宽） 供应商设备封装:16-SOIC W 包装:带卷 (TR) 其它名称:ADM691ARZ-REEL7TR |
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