- 您现在的位置：买卖IC网 > PDF目录15972 > MAX6302CPA+ (Maxim Integrated Products)IC SUPERVISOR MPU 8-DIP PDF资料下载
参数资料
| 型号： | MAX6302CPA+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/12页 |
| 文件大小： | 0K |
| 描述： | IC SUPERVISOR MPU 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 |
| 复位超时： | 最小为 2.8 ms |
| 电压 - 阀值： | 可调节/可选择 |
| 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 |
+5V, Low-Power μP Supervisory Circuits
with Adjustable Reset/Watchdog
RESET TO
OTHER SYSTEM
V CC
V CC
COMPONENTS
TO RESET
GENERATOR
MAX6301
μ P
WDI
WATCHDOG
TIMER
V CC
GND
0.1 μ F
4.7k ?
MAX6301
MAX6302
RESET
RESET
WDS
TO MODE MAX6303
CONTROL MAX6304
Figure 7. Interfacing to μPs with Bidirectional Reset I/O Pins
Interfacing to μPs with
Bidirectional Reset Pins
Since RESET is open-drain, the MAX6301 interfaces
easily with μPs that have bidirectional reset pins, such
as the Motorola 68HC11 (Figure 7). Connecting RESET
directly to the μP’s reset pin with a single pullup allows
either device to assert reset.
Negative-Going V CC Transients
In addition to issuing a reset to the μP during power-up,
power-down, and brownout conditions, these supervisors
are relatively immune to short-duration negative-going
transients (glitches). The Maximum Transient Duration vs.
Reset Threshold Overdrive graph in the Typical
Operating Characteristics shows this relationship.
The area below the curves of the graph is the region in
which these devices typically do not generate a reset
pulse. This graph was generated using a negative-
going pulse applied to V IN , starting above the actual
reset threshold (V RST ) and ending below it by the mag-
nitude indicated (reset-threshold overdrive). As the
magnitude of the transient increases (farther below the
reset threshold), the maximum allowable pulse width
decreases. Typically, a V CC transient that goes 100mV
below the reset threshold and lasts 50μs or less will not
cause a reset pulse to be issued.
Figure 8. Watchdog Input Structure
Watchdog Input Current
Extended Mode
In extended mode (WDS = V CC ), the WDI input is inter-
nally driven through a buffer and series resistor from
the watchdog counter (Figure 8). When WDI is left
unconnected, the watchdog timer is serviced within the
watchdog timeout period by a very brief low-high-low
pulse from the counter chain. For minimum watchdog
input current (minimum overall power consumption),
leave WDI low for the majority of the watchdog timeout
period, pulsing it low-high-low (> 30ns) once within the
period to reset the watchdog timer. If instead WDI is
externally driven high for the majority of the timeout
period, typically 70μA can flow into WDI.
Normal Mode
In normal mode (WDS = GND), the internal buffer that
drives WDI is disabled. In this mode, WDI is a standard
CMOS input and leakage current is typically 100pA,
regardless of whether WDI is high or low.
Ensuring a Valid RESET /RESET Output
Down to V CC = 0V (MAX6303/MAX6304)
When V CC falls below 1V, RESET /RESET current sinking
(sourcing) capabilities decline drastically. In the case
of the MAX6303, high-impedance CMOS-logic inputs
connected to RESET can drift to undetermined
voltages. This presents no problem in most applica-
tions, since most μPs and other circuitry do not operate
with V CC below 1V.
_______________________________________________________________________________________
9
相关PDF资料 |
PDF描述 |
|---|---|
| EEC20DREI-S93 | CONN EDGECARD 40POS .100 EYELET |
| RBM10DTBT | CONN EDGECARD 20POS R/A .156 SLD |
| RP15-1205SF/N | CONV DC/DC 15W 9-18VIN 05VOUT |
| MAX16034LLB29+T | IC BATTERY BACKUP 2.93V 10UDFN |
| RBM10DTAT | CONN EDGECARD 20POS R/A .156 SLD |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX6302CPA+ | 功能描述:监控电路 5V uPower Supervisor 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 |
| MAX6302CSA | 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 |
| MAX6302CSA+ | 功能描述:监控电路 5V uPower Supervisor 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 |
| MAX6302CSA+T | 功能描述:监控电路 5V uPower Supervisor 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 |
| MAX6302CSA-T | 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 |
发布紧急采购，3分钟左右您将得到回复。