G684L293T1U

更新时间： 2025-09-06 03:38:47

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
7页	174K
描述
Microprocessor Reset IC

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数据手册

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G684L293T1U 数据手册

Global Mixed-mode Technology Inc.

G684/G685

Microprocessor Reset IC

Features

General Description

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

Power-Supply Voltages

The G684/G685 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.

^ꢀFully Specified Over Temperature

^ꢀAvailable in Three Output Configurations

Push-Pull RESET Output (G684L)

Push-Pull RESET Output (G684H)

These circuits perform a single function: they assert a

reset signal whenever the V_CCsupply voltage declines

below a preset threshold, with hysteresis 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 (G685L)

^ꢀ14µA Supply Current

^ꢀGuaranteed Reset Valid to V_CC= 0.8V

^ꢀPower Supply Transient Immunity

^ꢀ5 pin SOT23-5 Packages

^ꢀ2% Threshold Accuracy

The G685 has an open-drain output stage, while the

G684 have push-pull outputs. The G685L’s open-drain

Applications

RESET output requires a pull-up resistor that can be

connected to a voltage higher than V_CC. The G684L

have an active-low RESET output, while the G684H

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 G684/G685 ideal for

use in portable equipment. The G684/G685 are avail-

able in 5-pin SOT23-5 packages.

Ordering Information

ORDER NUMBER TEMP. RANGE

PACKAGE

SOT23-5

G684H(L)xxxT1U

G685LxxxT1U

-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

N.C.

VCC

R_pull-up*

G684/G685

SOT23-5

G684/G685

GND

µP

RESET

INPUT

(RESET)

RESET

GND

(RESET)

()is for G684H

*G685 ONLY

TEL: 886-3-5788833

http://www.gmt.com.tw

Ver: 1.2

Jun 03, 2004

12 3 4 5 6 7

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