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參數(shù)資料
| 型號： | TPS3305 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | DUAL PROCESSOR SUPERVISORS |
| 中文描述： | 雙處理器監(jiān)事 |
| 文件頁數(shù)： | 2/13頁 |
| 文件大?。?/td> | 236K |
| 代理商： | TPS3305 |
TPS3305-18, TPS3305-25, TPS3305-33
DUAL PROCESSOR SUPERVISORS
SLVS198 – DECEMBER 1998
2
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
description (continued)
The various supply voltage supervisors are designed to monitor the nominal supply voltage, as shown in the
following supply voltage monitoring table.
SUPPLY VOLTAGE MONITORING
DEVICE
NOMINAL SUPERVISED VOLTAGE
THRESHOLD VOLTAGE (TYP)
SENSE1
3.3 V
SENSE2
1.8 V
SENSE1
2.93 V
SENSE2
1.68 V
TPS3305-18
TPS3305-25
3.3 V
2.5 V
2.93 V
2.25 V
TPS3305-33
5 V
3.3 V
4.55 V
2.93 V
During power-on, RESET is asserted when the supply voltage V
DD
becomes higher than 1.1 V. Thereafter, the
supply voltage supervisor monitors the SENSEn inputs
and keeps RESET active as long as SENSEn
remains
below the threshold voltage V
IT+
.
An internal timer delays the return of the RESET output to the inactive state (high) to ensure proper system reset.
The delay time, t
d typ
= 200 ms, starts after SENSE1 and SENSE2 inputs
have risen above the threshold voltage
V
IT+
. When the voltage at SENSE1 or SENSE2 input drops below the threshold voltage V
IT–
, the RESET output
becomes active (low) again.
The TPS3305-xx devices integrate a watchdog timer that is periodically triggered by a positive or negative
transition of WDI. When the supervising system fails to retrigger the watchdog circuit within the time-out interval,
t
t(out)
= 1.6 s, RESET becomes active for the time period t
d
. This event also reinitializes the watchdog timer.
Leaving WDI unconnected disables the watchdog.
The TPS3305-xx family of devices incorporates a manual reset input, MR. A low level at MR causes RESET
to become active. In addition to the active-low RESET output, the TPS3305-xx family includes an active-high
RESET output.
The TPS3305-xx devices are available in either 8-pin MSOP or standard 8-pin SO packages.
The TPS3305-xx family is characterized for operation over a temperature range of – 40
°
C to 85
°
C.
AVAILABLE OPTIONS
PACKAGED DEVICES
TA
SMALL OUTLINE
(D)
PowerPAD
μ
-SMALL OUTLINE
(DGN)
MARKING
DGN PACKAGE
CHIP FORM
(Y)
TPS3305-18D
TPS3305-18DGN
TIAAM
TPS3305-18Y
–40 C to 85 C
TPS3305-25D
TPS3305-33D
TPS3305-25DGN
TPS3305-33DGN
TIAAN
TIAAO
TPS3305-25Y
TPS3305-33Y
PowerPAD is a trademark of Texas Instruments Incorporated.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TPS3307- | TRIPLE PROCESSOR SUPERVISORS |
| TPS3307-18Y | TRIPLE PROCESSOR SUPERVISORS |
| TPS3307-25Y | TRIPLE PROCESSOR SUPERVISORS |
| TPS3307-33Y | TRIPLE PROCESSOR SUPERVISORS |
| TPS333 | Thermopile Detector |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TPS3305- | 制造商:TI 制造商全稱:Texas Instruments 功能描述:DUAL PROCESSOR SUPERVISORS |
| TPS3305-18 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:雙處理器監(jiān)事 |
| TPS3305-18/3305-25/3305-33 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Dual Processor Supervisors |
| TPS3305-18D | 功能描述:監(jiān)控電路 Dual Processor 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 人工復位:Resettable 監(jiān)視器:No Watchdog 電池備用開關(guān):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 |
| TPS3305-18D | 制造商:Texas Instruments 功能描述:DUAL PROCESSOR SUPERVISORY CIRCUIT |
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