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| 型号： | TC1279-5ENBTR |
| 厂商： | Microchip Technology Inc. |
| 英文描述： | 3-Pin Reset Monitors for 5V Systems |
| 中文描述： | 3引脚复位监控器的5V系统 |
| 文件页数： | 6/12页 |
| 文件大小： | 395K |
| 代理商： | TC1279-5ENBTR |
TC1278/TC1279
DS21384D-page 6
2007 Microchip Technology Inc.
3.2
V
CC
Transient Rejection
The TC1278/TC1279 provides accurate V
CC
monitor-
ing and reset timing during power-up, power-down,
and brownout/sag conditions. Furthermore, it rejects
negative-going transients (glitches) on the power
supply line.
Figure 3-5
shows the maximum transient
duration vs. maximum negative excursion (overdrive)
for glitch rejection. Any combination of duration and
overdrive that lays under the curve will not generate a
reset signal. Combinations above the curve are
detected as a brownout or power-down. Transient
immunity can be improved by adding a capacitor in
close proximity to the V
CC
pin of the TC1278/TC1279.
FIGURE 3-5:
Duration vs. Overdrive For Glitch Rejection At
+25°C.
Maximum Transient
RESET COMPARATOR OVERDRIVE,
[V
CCTP
- V
CC
] (mV)
5
3
2
4
1
0
1
5
100
1000
T
A
= +25°C
V
CCTP
Duration
Overdrive
V
CC
TC1278/9
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