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| 型号： | ADM812ZARTZ-REEL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 7/12页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR RESET 2.32V SOT143 |
| 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 140 ms |
| 电压 - 阀值： | 2.32V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | TO-253-4，TO-253AA |
| 供应商设备封装： | SOT-143 |
| 包装： | 标准包装 |
| 其它名称： | ADM812ZARTZ-REEL7DKR |
Data Sheet
CIRCUIT INFORMATION
RESET THRESHOLDS
A reset output is provided to the microprocessor whenever the
V CC input is below the reset threshold. The actual reset threshold
depends on whether an L, M, T, S, R, or Z suffix is used (see
Table 4. Reset Threshold Options
Model Reset Threshold (V)
ADM811LART 4.63
ADM811MART 4.38
ADM811TART 3.08
ADM811/ADM812
This allows time for the power supply and microprocessor to
stabilize.
The ADM811 provides an active low reset output (RESET)
while the ADM812 provides an active high output (RESET).
During power-down of the ADM811, the RESET output
remains valid (low) with V CC as low as 1 V. This ensures that
the microprocessor is held in a stable shutdown condition as
the supply falls and also ensures that no spurious activity can
occur via the microprocessor as it powers up.
MANUAL RESET
ADM811-3TART
ADM811SART
ADM811RART
ADM811ZART
ADM812LART
ADM812MART
ADM812TART
ADM812SART
ADM812RART
ADM812ZART
3.08
2.93
2.63
2.32
4.63
4.38
3.08
2.93
2.63
2.32
The ADM811/ADM812 are equipped with a manual reset
input. This input is designed to operate in a noisy environment
where unwanted glitches could be induced. These glitches could
be produced by the bouncing action of a switch contact, or where a
manual reset switch may be located some distance away from
the circuit (the cabling of which can pick up noise).
The manual reset input is guaranteed to ignore logically valid
inputs that are faster than 100 ns and to accept inputs longer in
duration than 10 μs.
GLITCH IMMUNITY
RESET OUTPUT
On power-up and after V CC rises above the reset threshold, an
internal timer holds the reset output active for 240 ms (typical).
This is intended as a power-on reset signal for the processor. It
The ADM811/ADM812 contain internal filtering circuitry
providing glitch immunity from fast transient glitches on the
power supply line.
V CC V REF V REF V REF V REF
allows time for both the power supply and the microprocessor
to stabilize after power-up. If a power supply brownout or
RESET
t 1
t 1
interruption occurs, the reset output is similarly activated and
remains active for 240 ms (typical) after the supply recovers.
t 1 = RESET TIME = 250ms TYPICAL
V REF = RESET VOLTAGE THRESHOLD
Figure 10. Power Fall RESET Timing
Rev. G | Page 7 of 12
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| ADM812SARTZ-REEL7 | IC SUPERVISOR RESET 2.93V SOT143 |
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| ADM1813-5AKS-RL7 | IC MONITOR RESET 4.62V SC70-3 |
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| ADM823LYKS-R7 | 功能描述:IC SUPERVISOR W/RESET SC70-5 RoHS:否 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:低有效 复位超时:标准传输延迟为 60 µs 电压 - 阀值:3V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:Digi-Reel® 其它名称:LM8364BALMF30DKR |
| ADM823LYKSZ-R7 | 功能描述:IC SUPERVISOR W/RESET SC70-5 RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 标准包装:3,000 系列:- 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:3.06V 工作温度:-40°C ~ 105°C 安装类型:表面贴装 封装/外壳:SC-70，SOT-323 供应商设备封装:SC-70-3 包装:带卷 (TR) 其它名称:ADM1817-5AKSREEL7 |
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