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參數資料
| 型號： | MAX6468US40D3+T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 電源管理 |
| 英文描述： | Microprocessor Supervisory Reset Circuits with Edge-Triggered, One-Shot Manual Reset |
| 中文描述： | 1-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO4 |
| 封裝： | LEAD FREE, TO-253, SOT-143, 4 PIN |
| 文件頁數： | 1/12頁 |
| 文件大小： | 379K |
| 代理商： | MAX6468US40D3+T |
General Description
The MAX6467/MAX6468 microprocessor (P) supervi-
sory circuits monitor single power-supply voltages from
+1.8V to +5.0V and assert a reset if the supply voltage
drops below its preset threshold. An edge-triggered,
one-shot manual reset function ensures that the P
enters the reset mode for a fixed timeout period only,
even in the event of a continuously asserted manual
reset. The MAX6467/MAX6468 significantly improve
system reliability compared to traditional manual reset
supervisory circuits.
A variety of factory-trimmed threshold options accommo-
date different supply voltages and tolerances, eliminating
external components. The factory-set thresholds range
from +1.575V to +4.625V to monitor +5.0V, +3.3V, +3.0V,
+2.5V, and +1.8V supplies with various tolerances. Reset
timeout periods of 150ms (min) and 1200ms (min) are
available to accommodate different P platforms.
A single, active-low RESET output asserts when VCC
drops below its threshold or if the edge-triggered MR
asserts low. RESET remains low for the reset timeout
period after VCC rises above its threshold and for a fixed,
one-shot timeout period after a manual reset input falling
edge. RESET remains valid as long as VCC remains
above +1V. Open-drain (MAX6467) and push-pull
(MAX6468) output options provide additional flexibility in
the system design.
The MAX6467/MAX6468 are offered in the space-saving
4-pin SOT143 package and the ultra-small 4-pin SC70
package and are specified over the automotive (-40°C to
+125°C) temperature range.
Applications
Cell Phones/PDAs
Embedded Control Systems
Industrial Equipment
Automotive Products
Portable/Battery-Powered Equipment
Medical Devices
DSL Modems
MP3 Players
GPS Systems
Digital Cameras
Features
Precision Factory-Set Reset Threshold Voltages
for +5.0V, +3.3V, +3.0V, +2.5V, and +1.8V Supplies
Edge-Triggered Manual Reset Input with One-
Shot Pulsed Reset Output
Two Reset Timeout Period Options (150ms or
1200ms min)
Immune to Short Voltage Transients
Low Supply Current (3A at VCC = +1.8V)
RESET Valid to VCC = +1V
Active-Low Open-Drain and Push-Pull RESET
Output Options
-40°C to +125°C Operating Temperature Range
Small 4-Pin SC70 and SOT143 Packages
No External Components Required
Pin Compatible with MAX811, MAX6315,
MAX6384, and MAX6386
MAX6467/MAX6468
Microprocessor Supervisory Reset Circuits
with Edge-Triggered, One-Shot Manual Reset
________________________________________________________________ Maxim Integrated Products
1
Ordering Information
19-2523; Rev 1; 11/05
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
Typical Operating Circuit appears at end of data sheet.
PART
TEMP RANGE
PIN-PACKAGE
MAX6467XS_ _D_-T
-40°C to +125°C
4 SC70-4
MAX6467US_ _D_-T
-40°C to +125°C
4 SOT143-4
MAX6468XS_ _D_-T
-40°C to +125°C
4 SC70-4
MAX6468US_ _D_-T
-40°C to +125°C
4 SOT143-4
Note: Insert reset threshold suffix (see Reset Threshold table)
after XS or US. Insert reset timeout delay (see Reset Timeout
Delay table) after D to complete the part number. Sample stock
is generally held on standard versions only (see Standard
Versions table). Standard versions have an order increment
requirement of 2500 pieces. Nonstandard versions have an
order increment requirement of 10,000 pieces. Contact factory
for availability.
Devices are available in both leaded and lead-free packaging.
Specify lead-free by replacing “T” with “+T” when ordering.
Pin Configurations continued at end of data sheet.
1
2
4
3
VCC
GND
SC70
TOP VIEW
MAX6467XS
MAX6468XS
RESET
MR
Pin Configurations
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX6468US40D7 | 制造商:Maxim Integrated Products 功能描述:MICROPROCESSOR SUPERVISORY RESET CI - Rail/Tube |
| MAX6468US40D7+ | 制造商:Maxim Integrated Products 功能描述:PROCESSOR SUPERVISOR 4V 7UA 4PIN SOT-143 - Rail/Tube |
| MAX6468US40D7+T | 功能描述:監控電路 MPU Supervisory Reset Circuit RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6468US40D7-T | 功能描述:監控電路 RoHS:否 制造商:STMicroelectronics 監測電壓數: 監測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復位:Resettable 監視器:No Watchdog 電池備用開關:No Backup 上電復位延遲（典型值）:10 s 電源電壓-最大:5.5 V 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6468US41D3 | 制造商:Maxim Integrated Products 功能描述:MICROPROCESSOR SUPERVISORY RESET CI - Rail/Tube |
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