Datasheet > MAX6423US18+

MAX6423US18+

更新时间： 2023-08-15 00:00:00

品牌	Logo	应用领域
美信 - MAXIM		/
页数	文件大小	规格书
9页	183K
描述
Low-Power, SC70/SOT µP Reset Circuits with Capacitor-Adjustable Reset Timeout Delay

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中文翻译

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MAX6423US18+ 数据手册

MAX6340/

MAX6421–MAX6426

Low-Power, SC70/SOT µP Reset Circuits with

Capacitor-Adjustable Reset Timeout Delay

Pin Description

MAX6421

MAX6422

MAX6423

MAX6424

MAX6425

MAX6340

SOT23

MAX6426 NAME

SOT23

FUNCTION

SOT143

SC70

SOT23

Set Reset Timeout Input. Connect a capacitor between SRT

and ground to set the timeout period. Determine the period as

SRT

follows: t = 2.73 ✕ 10⁶✕ C

+ 275µs with t in seconds

SRT

and C

in farads.

SRT

—

2, 3

—

GND

N.C.

Ground

Not Internally Connected. Can be connected to GND.

Supply Voltage and Reset Threshold Monitor Input

RESET changes from high to low whenever V

drops below

the selected reset threshold voltage. RESET remains low for

RESET

the reset timeout period after V

threshold.

exceeds the reset

RESET changes from low to high whenever V

drops below

the selected reset threshold voltage. RESET remains high for

—

RESET

the reset timeout period after V

threshold.

exceeds the reset

Detailed Description

Reset Output

3.3V

The reset output is typically connected to the reset input

of a µP. A µP’s reset input starts or restarts the µP in a

known state. The MAX6340/MAX6421–MAX6426 µP

supervisory circuits provide the reset logic to prevent

code-execution errors during power-up, power-down,

and brownout conditions (see Typical Operating

Characteristics).

LASER-TRIMMED

RESISTORS

5.0V

RESET changes from high to low whenever V

drops

10kΩ

REF

RESET

below the threshold voltage. Once V

exceeds the

SYSTEM

threshold voltage, RESET remains low for the capacitor-

adjustable reset timeout period.

RESET

TIMEOUT

SRT

The MAX6422 active-high RESET output is the inverse

SRT

logic of the active-low RESET output. All device outputs

MAX6340

MAX6423

MAX6425

MAX6426

are guaranteed valid for V

> 1V.

GND

The MAX6340/MAX6423/MAX6425/MAX6426 are open-

drain RESET outputs. Connect an external pullup resis-

tor to any supply from 0 to 5.5V. Select a resistor value

large enough to register a logic low when RESET is

asserted and small enough to register a logic high

while supplying all input current and leakage paths

connected to the RESET line. A 10kΩ to 100kΩ pullup

is sufficient in most applications.

Figure 1. MAX6340/MAX6423/MAX6425/MAX6426 Open-Drain

RESET Output Allows Use with Multiple Supplies

Maxim Integrated

1 2 345 6 7...9

中文翻译

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与MAX6423US18+相关器件

型号	品牌	获取价格	描述	数据表
MAX6423US18-T	MAXIM	获取价格	Low-Power SC70/SOT µ.P Reset Circuits with Capacitor-Adjustable Reset Timeout Delay
MAX6423US19+	MAXIM	获取价格	Low-Power, SC70/SOT µP Reset Circuits with Capacitor-Adjustable Reset Timeout Del
MAX6423US19+T	MAXIM	获取价格	暂无描述
MAX6423US19-T	MAXIM	获取价格	Low-Power SC70/SOT µ.P Reset Circuits with Capacitor-Adjustable Reset Timeout Delay
MAX6423US20+T	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, +2.0VV, BICMOS, PDSO4, LEAD FREE, TO-253,
MAX6423US20-T	MAXIM	获取价格	Low-Power SC70/SOT µ.P Reset Circuits with Capacitor-Adjustable Reset Timeout Delay
MAX6423US21+T	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, +2.1VV, BICMOS, PDSO4, LEAD FREE, TO-253,
MAX6423US21-T	MAXIM	获取价格	Low-Power SC70/SOT µ.P Reset Circuits with Capacitor-Adjustable Reset Timeout Delay
MAX6423US22+	MAXIM	获取价格	Power Supply Support Circuit, Adjustable, 1 Channel, BICMOS, PDSO4, LEAD FREE, TO-253, SOT
MAX6423US22+T	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, +2.188VV, BICMOS, PDSO4, LEAD FREE, TO-253

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