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参数资料
| 型号： | MAX1232CPA+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 3/6页 |
| 文件大小： | 0K |
| 描述： | IC MPU SUPERVISORY CIRCUIT 8-DIP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 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 250 ms |
| 电压 - 阀值： | 4.37V，4.62V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 8-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 8-PDIP |
| 包装： | 管件 |
| 产品目录页面： | 1414 (CN2011-ZH PDF) |
Microprocessor Monitor
AC Electrical Characteristics
(V CC = +5V ±10%, T A = T MIN to T MAX )
PARAMETER
PBRST (Note 5)
PBRST Delay
Reset Active Time
ST Pulse Width
SYMBOL
t PB
t PBD
t RST
t ST
Figure 3
Figure 3
Figure 4
CONDITIONS
MIN
20
1
250
75
TYP
4
610
MAX
20
1000
UNITS
ms
ms
ms
ns
Figure 4, TD pin = 0V
62.5
150
250
ST Timeout Period
t TD
TD pin = open
250
600
1000
ms
TD pin = V CC
500
1200
2000
V CC Fall Time (Note 4)
V CC Rise Time (Note 4)
V CC Detect to RST High and RST
Low
t F
t B
t BPD
Figure 5
Figure 6
Figure 7, V CC falling
10
0
100
μs
μs
ns
V CC Detect to RST Low and RST
Open (Note 6)
t BPU
Figure 8, V CC rising
250
610
1000
ms
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
PBRST is internally pulled up to V CC with an internal impedance of typically 40k ? .
Measured with outputs open.
All voltages referenced to GND.
Guaranteed by desing.
PBRST must be held low for a minimum of 20ms to guarantee a reset.
t R = 5μs.
Pin Description
WIDE SO
PIN
DIP/SO
NAME
FUNCTION
1, 3, 5, 7, 10,
12, 14, 16
2
4
6
8
—
1
2
3
4
N.C.
PBRST
TD
TOL
GND
No Connection
Pushbutton Reset Input. A debounced active-low input that ignores pulses less than 1ms
in duration and is guaranteed to recognize inputs of 20ms or greater.
Time Delay Set. The watchdog timebase select input (t TD = 150ms for TD = 0V, t TD =
600ms for TD = open, t TD = 1.2s for TD = V CC ).
Tolerance Input. Connect to GND for 5% tolerance or to V CC for 10% tolerance.
Ground
Reset Output (Active High). Goes active:
(1) If VCC falls below the selected reset voltage threshold
9
5
RST
(2) If PBRST is forced low
(3) If ST is not strobed within the minimum timeout period
(4) During power-up
11
13
15
6
7
8
RST
ST
V CC
Reset Output (Active Low, Open-Drain). See RST.
Strobe Input. Input for watchdog timer.
The +5V Power-Supply Input
_______________________________________________________________________________________
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| MAX1232CPA+ | 功能描述:监控电路 MPU Monitor RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX1232CSA | 功能描述:监控电路 RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX1232CSA+ | 功能描述:监控电路 MPU Monitor RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX1232CSA+G126 | 功能描述:监控电路 Microprocessor Monitor RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
| MAX1232CSA+T | 功能描述:监控电路 MPU Monitor RoHS:否 制造商:STMicroelectronics 监测电压数: 监测电压: 欠电压阈值: 过电压阈值: 输出类型:Active Low, Open Drain 人工复位:Resettable 监视器:No Watchdog 电池备用开关:No Backup 上电复位延迟（典型值）:10 s 电源电压-最大:5.5 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:UDFN-6 封装:Reel |
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