G699L400T1U

更新时间： 2024-11-01 04:19:11

品牌	Logo	应用领域
致新 - GMT		电源电路电源管理电路微处理器光电二极管
页数	文件大小	规格书
8页	185K
描述
Microprocessor Reset IC

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G699L400T1U 数据手册

Global Mixed-mode Technology Inc.

G698/G699

Microprocessor Reset IC

Features

General Description

The G698/G699 are microprocessor (µP) supervisory

circuits used to monitor the power supplies in µP and

digital systems. They provide excellent circuit reliability

and low cost and adjustments when used with +5V,

+3.3V, +3.0V - powered circuits.

ꢀPrecision Monitoring of +3V, +3.3V, and +5V

Power-Supply Voltages

^ꢀFully Specified Over Temperature

^ꢀAvailable in Three Output Configurations

Push-Pull RESET Output (G698L)

Push-Pull RESET Output (G698H)

These circuits perform a single function: they assert a

reset signal whenever the V_CCsupply voltage declines

below a preset threshold, with hysteresis keeping it

asserted for time delay determined by externally pro-

grammable time delay generator after V_CChas risen

above the reset threshold. Reset thresholds suitable

for operation with a variety of supply voltages are

available.

Open-Drain RESET Output (G699L)

^ꢀExternally Programmable Time Delay Generator

^ꢀ14µA Supply Current

^ꢀGuaranteed Reset Valid to V_CC= 0.8V

^ꢀPower Supply Transient Immunity

^ꢀ5 pin SOT23-5 Packages

^ꢀ2% Threshold Accuracy

The G699L has an open-drain output stage, while the

G698 have push-pull outputs. The G699L’s open-drain

Applications

RESET output requires a pull-up resistor that can be

connected to a voltage higher than V_CC. The G698L

have an active-low RESET output, while the G698H

has an active-high RESET output. The reset com-

parator is designed to ignore fast transients on V_CC,

and the outputs are guaranteed to be in the correct

logic state for V_CCdown to 0.8V.

^ꢀComputers

^ꢀControllers

^ꢀIntelligent Instruments

^ꢀCritical µP and µC Power Monitoring

^ꢀPortable / Battery-Powered Equipment

^ꢀAutomotive

Low supply current makes the G698/G699 ideal for

use in portable equipment. The G698/G699 are avail-

able in 5-pin SOT23-5 packages.

Ordering Information

ORDER NUMBER TEMP. RANGE

PACKAGE

SOT23-5

G698H(L)xxxT1U

G699LxxxT1U

-40°C ~ +105°C

Note:T1 : SOT23-5

U : Tape & Reel

* xxx specifies the threshold voltage.

e.g. 263 denotes the 2.63V threshold voltage.

Pin Configuration

Typical Application Circuit

V_CC

VCC

R_pull-up*

GND

G698/G699

SOT23-5

G698/G699

µP

RESET

INPUT

(RESET)

RESET

GND

(RESET)

C_D

()is for G698H

*G699 ONLY

TEL: 886-3-5788833

http://www.gmt.com.tw

Ver: 1.3

Jun 03, 2004

12 3 4 5 6 7 8

中文翻译

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