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參數(shù)資料
| 型號： | MAX6839 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Ultra-Low-Voltage SC70 Voltage Detectors and µ.P Reset Circuits |
| 中文描述： | 超低電壓、SC70封裝電壓檢測器及微處理器復(fù)位電路 |
| 文件頁數(shù)： | 4/7頁 |
| 文件大?。?/td> | 147K |
| 代理商： | MAX6839 |
M
3-Pin, Low-Power
μP Reset Circuits
4
_______________________________________________________________________________________
V
CC
V
CC
GND
MAX6802
RESET
V
CC
GND
RESET
MOTOROLA
68HCXX
μ
P
100k
Applications Information
Interfacing to μPs with Bidirectional
Reset Pins
Since the
RESET
output on the MAX6802 is open-drain,
this device interfaces easily with μPs that have bidirec-
tional reset pins, such as the Motorola 68HC11.
Connecting the μP supervisor
’
s
RESET
output directly
to the microcontroller
’
s (μC
’
s)
RESET
pin with a single
pullup resistor allows either device to assert reset
(Figure 1).
Negative-Going V
CC
Transients
In addition to issuing a reset to the μP during power-up,
power-down, and brownout conditions, these devices are
relatively immune to short-duration, negative-going V
CC
transients (glitches). The
Typical Operating Characteristics
show the Maximum Transient Duration vs. Reset
Comparator Overdrive graph. The graph shows the maxi-
mum pulse width that a negative-going V
CC
transient may
typically have without issuing a reset signal. As the ampli-
tude of the transient increases, the maximum allowable
pulse width decreases.
Figure 1. Interfacing to μPs with Bidirectional Reset Pins
TOP VIEW
1
2
3
V
CC
RESET (RESET)
MAX6800
MAX6801
MAX6802
SOT23-3
( ) ARE FOR MAX6800
GND
Pin Configuration
Figure 2. Ensuring Reset Valid Down to V
CC
= 0
V
CC
GND
MAX6801
RESET
100k
(a)
V
CC
GND
MAX6800
RESET
100k
*
(b)
*ASSUMES HIGH-Z RESET INPUT TO THE
μ
P
MAX6801
V
CC
V
CC
RESET
RESET
GND
V
CC
GND
μ
P
Typical Operating Circuit
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX6839XSD0 | 制造商:Maxim Integrated Products 功能描述:ULTRA-LOW-VOLTAGE SC70 VOLTAGE DET - Rail/Tube |
| MAX6839XSD0+ | 制造商:Maxim Integrated Products 功能描述:PROCESSOR SUPERVISOR ADJV 16UA 4PIN SC-70 - Cut Tape Product |
| MAX6839XSD0+T | 功能描述:監(jiān)控電路 Single uPower Reset Circuit RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)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(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6839XSD0-T | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測電壓數(shù): 監(jiān)測電壓: 欠電壓閾值: 過電壓閾值: 輸出類型:Active Low, Open Drain 人工復(fù)位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):No Backup 上電復(fù)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(fēng)格:SMD/SMT 封裝 / 箱體:UDFN-6 封裝:Reel |
| MAX6839XSD1 | 制造商:Maxim Integrated Products 功能描述:ULTRA-LOW-VOLTAGE SC70 VOLTAGE DET - Rail/Tube |
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