MAX691A, MAX693A, MAX800, MAX800L, MAX800M 微处理器监控电路

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The MAX691A/MAX693A/MAX800L/MAX800M microprocessor (µP) supervisory circuits are pin-compatible upgrades to the MAX691, MAX693, and MAX695. They improve performance with 30µA supply current, 200ms typ reset active delay on power-up, and 6ns chip-enable propagation delay. Features include write protection of CMOS RAM or EEPROM, separate watchdog outputs, backup-battery switchover, and a RESET-bar output that is valid with V_CC down to 1V. The MAX691A/MAX800L have a 4.65V typical reset-threshold voltage, and the MAX693A/MAX800M's reset threshold is 4.4V typical. The MAX800L/MAX800M guarantee power-fail accuracies to ±2%.

关键特性

应用/使用

200ms Power-OK/Reset Timeout Period
1µA Standby Current, 30µA Operating Current
On-Board Gating of Chip-Enable Signals, 10ns max Delay
MaxCap® or SuperCap Compatible
Guaranteed Active-Low RESET Assertion to V_CC = +1V
Voltage Monitor for Power-Fail or Low-Battery Warning
Power-Fail Accuracy Guaranteed to ±2% (MAX800L/M)
Available in 16-Pin Narrow SO, Plastic DIP, and TSSOP Packages
通过美国保险商实验室协会(UL®)认证

	汽车电子
	计算机：台式机、工作站、服务器
	控制器
	精确的µP监视
	智能仪表

Key Specifications: Battery Backup Circuits

Part Number

Reset Threshold Range (V)

Active-Low Reset Output

Active-High Reset Output

Max. I_CC (µA)

Features

RoHS Available

Industry Qualified

Package

Operating Temp. Range (°C)

Price^**

MAX691A

3.3 to 5.5

Push-Pull

100

•	Adjustable Reset Input

•	Battery On

•	Chip Enable Gate

•

Low Line

•	Power Fail Comparator

•

Watchdog

Yes

MIL-STD-883B

Ceramic DIP/16
PDIP/16
SOIC/16
TSSOP/16

-40 to +85
-55 to +125
0 to +70

$3.61 @ 1k

MAX693A

MIL-STD-883B

Ceramic DIP/16
PDIP/16
SOIC/16
TSSOP/16

$3.61 @ 1k

MAX800

PDIP/16
SOIC/16
TSSOP/16

$3.88 @ 1k

See All Battery Backup Circuits (92)

Notes:
^**This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.