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| 型号： | TC54VC4502EZB |
| 厂商： | Microchip Technology |
| 文件页数： | 5/20页 |
| 文件大小： | 0K |
| 描述： | IC VOLT DET CMOS 4.5V TO92-3 |
| 标准包装： | 1,000 |
| 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 |
| 电压 - 阀值： | 4.5V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 通孔 |
| 封装/外壳： | TO-226-3、TO-92-3 标准主体 |
| 供应商设备封装： | TO-92-3 |
| 包装： | 散装 |
| 产品目录页面： | 663 (CN2011-ZH PDF) |
| 其它名称： | 158-1089 158-1089-ND |
TC54
3.0
DETAILED DESCRIPTION
The output (V OUT ) will stay valid until the input voltage
In normal steady-state operation when V IN > V DET –,
the output will be at a logic-high (see Figure 3-1 ). In the
case of the TC54VN, this is an open-drain condition. If
the input falls below V DET –, the output will pull down
(Logic 0 ) to V SS . Generally, V OUT can pull down to
within 0.5V of V SS at rated output current and input
V IN
falls below the minimum operating voltage (V INMIN ) of
0.7V. Below this minimum operating voltage, the output
is undefined. During power-up (or anytime V IN has
fallen below V INMIN ), V OUT will remain undefined until
V IN rises above V INMIN . When this occurs, the output
will become valid. V OUT will be in its Active-low state,
while V INMIN < V IN < V DET + (therefore, V DET + = V DET –
+ V HYST ). If the input rises above V DET +, the output will
assume its Inactive state (high for TC54VC, open-drain
for TC54VN).
V DET +
Release Voltage
Detect Voltage V DET –
Minimum Operating
Voltage
Ground Level
V OUT
Output Voltage
Ground Level
V HYST
or RESET Voltage
FIGURE 3-1:
Timing Diagram.
? 2001-2011 Microchip Technology Inc.
DS21434J-page 5
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