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| 型号： | ADM709RANZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 3/4页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR MPU 2.63V RS 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，图腾柱 |
| 复位： | 低有效 |
| 复位超时： | 最小为 140 ms |
| 电压 - 阀值： | 2.63V |
| 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 |
ADM709
V CC
V TH
ADM709
RESET
GENERATOR
RESET
RESET at Voltages < 1 V
The ADM709 RESET output is guaranteed to operate with
supply voltages as low as 1 V. If it is desired that the RESET
output remains low below 1 V, then a pull-down resistor should
GND
be connected between the RESET output and GND. A resistor
of 100 k ? is suitable. This is illustrated in Figure 5.
Figure 1. Functional Block Diagram
ADM709
RESET
V CC
ADM709
RESET
GND
V CC
μP
RESET
GND
R1
GND
Figure 5. RESET Valid @ V CC < 1 V
Glitch Immunity
Figure 2. Typical Operating Circuit
CIRCUIT INFORMATION
RESET Output
RESET is an active low output which provides a reset signal to
the microprocessor whenever the V CC supply voltage is below
the reset threshold. An internal timer holds RESET low for
140 ms after the voltage on V CC rises above the threshold. This
is intended as a power-on reset signal for the processor. It allows
time for the power supply and microprocessor to stabilize after
power up. Similarly a power supply brownout will initiate a pro-
cessor reset. On power-down, the RESET output remains low
with V CC as low as 1 V. This ensures that the microprocessor is
The ADM709 is immune to short transients which may occur
on the V CC line. This is important so that spurious resets are not
generated as a result of minor glitches on the power supply.
Additional glitch immunity may be obtained by connecting a
capacitor (0.1 μ F or greater) as close as possible to the V CC pin
on the device.
Microprocessors with Bidirectional I-O
Some microprocessors or microcontrollers such as the
MC68HC11 have bidirectional reset lines. In order to avoid
signal contention, a resistor of 4.7 k ? should be connected
between the ADM709 RESET output and the microcontroller
RESET line. This arrangement is shown in Figure 6.
held in a stable shutdown condition as the power supply drops.
+5V
BUFFERED
RESET
V CC
VRT
VRT
V CC
ADM709
μP
RESET
t RS
RESET
GND
RESET
GND
Figure 3. Power Off/On RESET Timing
Figure 6. Interfacing to Microprocessors with
Bidirectional RESET
V CC
RESET
400ms/DIV
Figure 4. RESET Output vs. V CC
REV. 0
–3 –
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ADM709RAR | 功能描述:IC SUPERVISOR MPU 2.63V RS 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 |
| ADM709RAR-REEL | 制造商:Analog Devices 功能描述:Processor Supervisor 2.63V 3V/3.3V/5V 8-Pin SOIC N T/R 制造商:Analog Devices 功能描述:PROCESSOR SUPERVISOR 2.63V 200UA 8SOIC N - Tape and Reel |
| ADM709RARZ | 功能描述:IC SUPERVISOR MPU 2.63V RS 8SOIC 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 |
| ADM709RARZ-REEL | 功能描述:IC SUPERVISOR MPU 2.63V RS 8SOIC 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 |
| ADM709SAN | 制造商:Analog Devices 功能描述:PROCESSOR SUPERVISOR 2.93V 200UA 8PDIP - Rail/Tube 制造商:Rochester Electronics LLC 功能描述:RESET GENERATOR I.C. - Bulk |
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