参数资料
型号: LTC692IS8#PBF
厂商: Linear Technology
文件页数: 16/20页
文件大小: 0K
描述: IC MPU SUPERVISORY CIRCUIT 8SOIC
标准包装: 100
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: 高有效/低有效
复位超时: 最小为 140 ms
电压 - 阀值: 4.4V
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

LTC692/LTC693
APPLICATIONS INFORMATION
Pushbutton Reset
5V
V CC
RESET
RESET
The LTC692/LTC693 do not provide a logic input for direct
connection to a pushbutton. However, a pushbutton in
series with a 100Ω resistor connected to the RESET output
pin (Figure 13) provides an alternative for manual reset.
LTC692
LTC693
GND
0.1μF
100Ω
MPU
(e.g. 6805)
692_3 ? F13
Connecting a 0.1μF capacitor to the RESET pin debounces
the pushbutton input.
The 100Ω resistor in series with the pushbutton is required
to prevent the ringing, due to the capacitance and lead
inductance, from pulling the RESET pins of the MPU and
LTC692/LT693 below ground.
TYPICAL APPLICATIONS
Capacitor Backup with 74HC4016 Switch
Figure 13. The External Pushbutton Reset
Write-Protect for Additional RAMs
5V
0.1μF
V CC
V OUT
0.1μF
5V
0.1μF
V CC
LTC693
V OUT
+
10μF
0.1μF
V CC
62512
RAM A
R1
10k
R2
30k
1
10 11 12 14
74HC4016
7 13
2
+
100μF
LTC693
V BATT LOW LINE
3V
V BATT
CE OUT
CE IN
LOW LINE
GND
20ns PROPAGATION
DELAY
CS A
CS
GND
0.1μF
V CC
62128
RAM B
692_3 ? TA03
CS B
CS C
0.1μF
CS 1
CS 2
V CC
62128
RAM C
CS 1
CS 2
OPTIONAL CONNECTION FOR
ADDITIONAL RAMs
692_3 ? TA04
0692fb
16
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