- 您现在的位置：买卖IC网 > PDF目录15931 > ADM709TARZ (Analog Devices Inc)IC SUPERVISOR MPU 3.08V RS 8SOIC PDF资料下载
参数资料
| 型号： | ADM709TARZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 3/4页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR MPU 3.08V RS 8SOIC |
| 标准包装： | 98 |
| 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： | 3.08V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SOIC |
| 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 –
相关PDF资料 |
PDF描述 |
|---|---|
| DWN4.00BK | DURA WRAP 4" BLACK 75' |
| EMM11DRAS | CONN EDGECARD 22POS R/A .156 SLD |
| ACM08DSES | CONN EDGECARD 16POS .156 EYELET |
| SDR7045-6R8M | INDUCTOR 6.8UH 2.25A SMD |
| SDR7045-681K | INDUCTOR 680UH 300MA SMD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ADM709TARZ-REEL | 功能描述:IC SUPERVISOR MPU 3.08V 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 |
| ADM7150ACPZ-1.8-R7 | 制造商:Analog Devices 功能描述:800MA ULN LDO 1.8VO - Tape and Reel |
| ADM7150ACPZ-3.3-R7 | 制造商:Analog Devices 功能描述:800MA ULN LDO 3.3VO - Tape and Reel |
| ADM7150ACPZ-4.5-R7 | 制造商:Analog Devices 功能描述:800MA ULN LDO 4.5VO - Tape and Reel |
| ADM7150ACPZ-4.8-R7 | 制造商:Analog Devices 功能描述:800MA ULN LDO 4.8VO - Tape and Reel |
发布紧急采购，3分钟左右您将得到回复。