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參數(shù)資料
| 型號(hào)： | MAX8215 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Microprocessor Voltage Monitors(專用的微處理器電壓監(jiān)視器) |
| 中文描述： | ±5V、±12V (±15V)專用微處理器電壓監(jiān)視器 |
| 文件頁(yè)數(shù)： | 6/12頁(yè) |
| 文件大?。?/td> | 184K |
| 代理商： | MAX8215 |
M
±5V, ±12V (±15V ) Dedic ated
Mic roproc essor Voltage Monitors
6
_______________________________________________________________________________________
_______________Detailed Desc ription
The MAX8215/MAX8216 contain 5 comparators (Figure
1). The comparator with its output labeled DOUT is dis-
tinguished from the others in that it can be set up to mon-
itor various voltages; each of the other 4 comparators
monitors a specific voltage. The DOUT comparator’s
noninverting input is available external to the device; its
inverting input is tied internally to the reference.
The MAX8215/MAX8216 comparators have open-drain
outputs. Thus, these devices require pull-up resistors
for proper operation. See the Typical Operating Circuit.
Open-drain outputs are useful for driving LEDs and for
situations in which the comparator outputs must be
connected together (i.e., wire-ORed).
Bypass V
DD
with 0.1μF connected to PGND.
__________Applic ations Information
Hysteresis
When the voltage on a typical comparator’s input is
at or near the voltage on the other input, ambient
noise generally causes the comparator output to
oscillate. The most common way to eliminate this
problem is by using hysteresis. When the two com-
parator input voltages are equal, hysteresis causes
one comparator input voltage to move quickly past
the other, thus taking the input out of the region
where oscillation occurs. Standard comparators
need external resistors for hysteresis; these resistors
are not necessary when using any of the MAX8215
and MAX8216 comparators because hysteresis is
built in.
NAME
FUNCTION
1
VREF
Output of the internal 1.24V reference
2
GND
Ground. Connect to PGND.
3
+5V
Input for monitoring +5V supply
PIN
4
-5V
Input for monitoring -5V supply
5
+12V
(+15V)
MAX8215 input for monitoring +12V
(MAX8216 input for monitoring +15V)
6
-12V
(-15V)
MAX8215 input for monitoring -12V
(MAX8216 input for monitoring -15V)
7
DIN
Noninverting input of the auxiliary
comparator. Its inverting input is tied
to the internal reference.
Power-supply ground. Bypass V
DD
to this pin.
8
PGND
9
DOUT
Output of the auxiliary comparator
_____________________Pin Desc ription
Outputs of the four dedicated com-
parators
14
V
DD
10, 11,
12, 13
OUT4,
OUT3,
OUT2,
OUT1
Power-supply positive voltage input.
Bypass to PGND.
+5V
OUT1
-5V
OUT2
OUT3
+12V (+15V)
OUT4
-12V (-15V)
DOUT
DIN
1.24V REFERENCE
VREF
V
PGND
GND
( ) ARE FOR
MAX8216 ONLY.
MAX8215
MAX8216
Figure 1. Block Diagram
相關(guān)PDF資料 |
PDF描述 |
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| MAX824L | 5-Pin Microprocessor Supervisory Circuits(復(fù)位門限4.63V,5管腳μP監(jiān)控電路，具看門狗輸入和高有效復(fù)位) |
| MAX824M | 5-Pin Microprocessor Supervisory Circuits(復(fù)位門限4.38V,5管腳μP監(jiān)控電路，具看門狗輸入和高有效復(fù)位) |
| MAX824R | 5-Pin Microprocessor Supervisory Circuits(復(fù)位門限2.63V,5管腳μP監(jiān)控電路，具看門狗輸入和高有效復(fù)位) |
| MAX824S | 5-Pin Microprocessor Supervisory Circuits(復(fù)位門限2.93V,5管腳μP監(jiān)控電路，具看門狗輸入和高有效復(fù)位) |
| MAX824T | 5-Pin Microprocessor Supervisory Circuits(復(fù)位門限3.08V,5管腳μP監(jiān)控電路，具看門狗輸入和高有效復(fù)位) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX8215_05 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:±5V, ±12V (±15V) Dedicated Microprocessor Voltage Monitors |
| MAX8215C/D | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:【5V, 【12V (【15V) Dedicated Microprocessor Voltage Monitors |
| MAX8215CPD | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)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(kāi)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 |
| MAX8215CPD+ | 功能描述:監(jiān)控電路 5/12/15V +/-Dedictd MPU Voltage Monitor RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)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(kāi)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 |
| MAX8215CSD | 功能描述:監(jiān)控電路 RoHS:否 制造商:STMicroelectronics 監(jiān)測(cè)電壓數(shù): 監(jiān)測(cè)電壓: 欠電壓閾值: 過(guò)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(kāi)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 |
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