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參數資料
| 型號： | MAX6468 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 4-Channel Serial/Parallel Low-Side Pre-FET Driver 24-SSOP |
| 中文描述： | 微處理器監控復位電路，帶有邊沿觸發、單穩態手動復位 |
| 文件頁數： | 1/9頁 |
| 文件大小： | 265K |
| 代理商： | MAX6468 |
General Description
The MAX6467/MAX6468 microprocessor (μP) 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 μP
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 μP platforms.
A single, active-low
RESET
output asserts when V
CC
drops below its threshold or if the edge-triggered
MR
asserts low.
RESET
remains low for the reset timeout
period after V
CC
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 V
CC
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
o
Precision Factory-Set Reset Threshold Voltages
for +5.0V, +3.3V, +3.0V, +2.5V, and +1.8V Supplies
o
Edge-Triggered Manual Reset Input with One-
Shot Pulsed Reset Output
o
Two Reset Timeout Period Options (150ms or
1200ms min)
o
Immune to Short Voltage Transients
o
Low Supply Current (3μA at V
CC
= +1.8V)
o
RESET
Valid to V
CC
= +1V
o
Active-Low Open-Drain and Push-Pull
RESET
Output Options
o
-40°C to +125°C Operating Temperature Range
o
Small 4-Pin SC70 and SOT143 Packages
o
No External Components Required
o
Pin Compatible with MAX811, MAX6315,
MAX6384, and MAX6386
M
Microprocessor Supervisory Reset Circuits
with Edge-Triggered, One-Shot Manual Reset
________________________________________________________________
Maxim Integrated Products
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.
1
Ordering Information
19-2523; Rev 0; 7/02
Typical Operating Circuit appears at end of data sheet.
PART
TEMP RANGE
-40
°
C to +125
°
C
-40
°
C to +125
°
C
-40
°
C to +125
°
C
-40
°
C to +125
°
C
PIN-PACKAGE
4 SC70-4
4 SOT143-4
4 SC70-4
4 SOT143-4
MAX6467
XS_ _D_-T
MAX6467US_ _D_-T
MAX6468
XS_ _D_-T
MAX6468US_ _D_-T
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.
Pin Configurations continued at end of data sheet.
1
2
4
3
V
CC
GND
SC70
TOP VIEW
MAX6467XS
MAX6468XS
RESET
MR
Pin Configurations
相關PDF資料 |
PDF描述 |
|---|---|
| MAX6467US16D3-T | ±15kV ESD Protected, 3.3V, Full Fail-safe, Low Power, High Speed or Slew Rate Limited, RS-485/RS-422 Transceivers; Temperature Range: -40°C to 85°C; Package: 8-SOIC T&R |
| MAX6467US16D7-T | ±15kV ESD Protected, 3.3V, Full Fail-safe, Low Power, High Speed or Slew Rate Limited, RS-485/RS-422 Transceivers; Temperature Range: -40°C to 85°C; Package: 8-SOIC |
| MAX6467US17D3-T | ±15kV ESD Protected, 3.3V, Full Fail-safe, Low Power, High Speed or Slew Rate Limited, RS-485/RS-422 Transceivers; Temperature Range: -40°C to 85°C; Package: 8-SOIC T&R |
| MAX6467US17D7-T | ±15kV ESD Protected, 3.3V, Full Fail-safe, Low Power, High Speed or Slew Rate Limited, RS-485/RS-422 Transceivers; Temperature Range: -40°C to 85°C; Package: 8-MSOP T&R |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| MAX6468US16D3 | 制造商:Maxim Integrated Products 功能描述:MICROPROCESSOR SUPERVISORY RESET CI - Rail/Tube |
| MAX6468US16D3+ | 制造商:Maxim Integrated Products 功能描述:PROCESSOR SUPERVISOR 1.575V 7UA 4PIN SOT-143 - Rail/Tube |
| MAX6468US16D3+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 |
| MAX6468US16D3-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 |
| MAX6468US16D7 | 制造商:Maxim Integrated Products 功能描述:MICROPROCESSOR SUPERVISORY RESET CI - Cut Tape Product |
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