CBM708A 电压监控微处理器监控电路

The CBM705A, CBM706A, CBM707A, CBM708Amicroprocessor supervisory circuits are suitable for monitoring 5V power supplies/batteries and microprocessor activity. The CBM705A/CBM706A provide power-supply monitoring circuitry that generate a reset output during power-up,power-down, and brownout conditions. The reset output remains operational with VCC as low as 1V. Independent watchdog monitoring circuitry is also provided. This is activated if the watchdog input has not been toggled within 1.60 sec. In addition, there is a 1.25V threshold detector to warn of power failures, to detect low battery conditions, or to monitor an additional power supply. An active low, debounced manual reset input ( MR) is also included.
The CBM705A and CBM706A are identical except for the reset threshold monitor levels, which are 4.65V and 4.40V, respectively. The CBM707A and CBM708A provide a similar functionality to the CBM705A and CBM706A and only differ in that a watchdog timer function is not available. Instead, an active high reset output (RESET) is available as well as the active low reset output(RESET ). The CBM707A and CBM708A are identical except for the reset threshold monitor levels, which are 4.65V and 4.40V, respectively.All devices are available in narrow 8-lead SOIC packages.

Parameters
Features
Applications

Threshold voltage:4.4V
Product type:Power-On Reset
Monitoring voltage:1
Output:Push-Pull/Push-Pull
Reset:Active High/Active Low
Reset timeout:160 ms Minimum

Guaranteed RESET valid with VCC = 1V
190 μA quiescent current
Precision supply voltage monitor

4.65 V (CBM705A/CBM707A)

4.40 V (CBM706A/CBM708A)
200 ms reset pulse width
Debounced TTL/CMOS manual reset input( MR)
Independent watchdog timer(CBM705A/CBM706A)
1.60 sec timeout (CBM705A/CBM706A)
Active high reset output(CBM707A/CBM708A)
Voltage monitor for power fail or low battery warning
Superior upgrade for CBM705A to CBM708A

Microprocessor systems
Computers
Controllers
Intelligent instruments
Critical microprocessor supply monitoring

Type	Title	File Size	Date	Download
Product manual	CBM705A_CBM706A_CBM707A_CBM708A	2681KB	2024-12-02	Download
Selection Guide	Corebai Selection Guide Rev.En2023.pdf	7.73M	2024-01-24	Download

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ANALOG-ENGINEER-CALC — 模拟工程师计算器

模拟工程师计算器旨在加快模拟电路设计工程师经常使用的许多重复性计算。该基于 PC 的工具提供图形界面，其中显示各种常见计算的列表（从使用反馈电阻器设置运算放大器增益到为稳定模数转换器 (ADC) 驱动器缓冲器电路选择合适的电路设计元件）。除了可用作单独的工具之外，该计算器还能够很好地与模拟工程师口袋参考书中所述的概念配合使用。

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计算工具

ANALOG-ENGINEER-CALC — 模拟工程师计算器

模拟工程师计算器旨在加快模拟电路设计工程师经常使用的许多重复性计算。该基于 PC 的工具提供图形界面，其中显示各种常见计算的列表（从使用反馈电阻器设置运算放大器增益到为稳定模数转换器 (ADC) 驱动器缓冲器电路选择合适的电路设计元件）。除了可用作单独的工具之外，该计算器还能够很好地与模拟工程师口袋参考书中所述的概念配合使用。

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Product number	Rating	Inventory(pcs)	Price	Package	MSL	RoHS	MPQ	Operating Temperature Range (℃)	Order
CBM708AMS8	Industrial grade	1	10~99 \| $ 0.25  100~999$0.24 1000~2499$0.17 2500+$0.13	MSOP-8	MSL 3	RoHS	Tape and Reel, 3000	-40 to 85	- + Requested quantity exceeds in stock amount Add to cart
CBM708AS8	Industrial grade	19000	10~99 \| $ 0.25  100~999$0.24 1000~2499$0.17 2500+$0.13	SOP-8	MSL 3	RoHS	Tape and Reel, 2500	-40 to 85	- + Requested quantity exceeds in stock amount Add to cart