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參數(shù)資料
| 型號(hào)： | PI4S708T |
| 英文描述： | 12-Bit Rail-to-Rail Micropower DACs in SO-8; Package: SO; No of Pins: 8; Temperature Range: 0°C to +70°C |
| 中文描述： | 監(jiān)控電路| 3.08V的低有效復(fù)位/高監(jiān) |
| 文件頁(yè)數(shù)： | 2/8頁(yè) |
| 文件大小： | 398K |
| 代理商： | PI4S708T |
2
PS8703 09/23/03
PI4S705, PI4S706x, PI4S707, PI4S708x, PI4S813L
μP Supervisor Circuts
Pin Name
Type
Description
Manual-Reset
: triggers a reset pulse when pulled below 0.8V, active low. It has an internal 250μA
pull-up current and can be driven from a TTL or CMOS logic line as well as shorted to ground with a
switch.
Power Supply
Ground Reference
for all signals
Power-Fail Voltage Monitor Input
: When PFI is less than 1.25V, PFO goes low. Connect PFI to GND
or Vcc when not used.
Power-Fail Output
: it gets low and sinks current when PFI is less than 1.25V; otherwise PFO stays
high.
Watchdog Input
: If WDI remains high or low for 1.6sec, the internal watchdog timer runs out and
WDO goes low. Floating WDI or connecting WDI to a high-impedance three-state buffer disables the
watchdog feature. The internal watchdog timer clears whenever reset is asserted, WDI is three-stated,
or WDI sees a rising or falling edge.
No Connect
Reset Output pulses
: low for 200ms when triggered, and stays low whenever Vcc is below the reset
threshold. It remains low for 200ms after V
CC
rises above the reset threshold or MR goes from low to
high. A watchdog timeout will not trigger RESET unless WDO is connected to MR.
Watchdog Output
: pulls low when the internal watchdog timer finishes its 1.6sec count and does not
go high again until the watchdog is cleared. WDO also goes low during low-line conditions. Whenever
Vcc is below the reset threshold, WDO stays low; however, unlike RESET, WDO does not have mini-
mum pulse width. As soon as V
CC
rises above the reset threshold, WDO goes high with no delay.
The inverse of RESET
: active high. Whenever RESET is high, RESET is low.
MR
Input
V
CC
GND
Power
Ground
PFI
Input
PFO
Output
WDI
Input
NC
RESET
Output
WDO
Output
RESET
Output
Pin Descriptiom
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PI4S813L | Supervisory Circuits | 4.63V Reset Active High Supervisor |
| PI5A121T | 12-Bit Rail-to-Rail Micropower DACs in SO-8; Package: SO; No of Pins: 8; Temperature Range: 0°C to +70°C |
| PI5A122T | SPST Analog Switch |
| PI5A124T | Dual 12-Bit Rail-to-Rail Micropower DACs; Package: PDIP; No of Pins: 16; Temperature Range: 0°C to +70°C |
| PI5A125T | Dual 12-Bit Rail-to-Rail Micropower DACs; Package: PDIP; No of Pins: 16; Temperature Range: -40°C to +85°C |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PI4ULS3V08M | 制造商:PERICOM 制造商全稱(chēng):Pericom Semiconductor Corporation 功能描述:1.2V to 3.6V Universal Bi-directional Level Shifter with Automatic Direction Control & Advanced Package Solution |
| PI4ULS3V08MZLE | 功能描述:轉(zhuǎn)換 - 電壓電平 8bit Auto Direction Sensing Volt Trans RoHS:否 制造商:Micrel 類(lèi)型:CML/LVDS/LVPECL to LVCMOS/LVTTL 傳播延遲時(shí)間:1.9 ns 電源電流:14 mA 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MLF-8 |
| PI4ULS3V08MZLEX | 功能描述:轉(zhuǎn)換 - 電壓電平 Universal Bi- directionaLevel RoHS:否 制造商:Micrel 類(lèi)型:CML/LVDS/LVPECL to LVCMOS/LVTTL 傳播延遲時(shí)間:1.9 ns 電源電流:14 mA 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MLF-8 |
| PI4ULS3V08ZFE | 功能描述:轉(zhuǎn)換 - 電壓電平 Universal Bi- directionaLevel RoHS:否 制造商:Micrel 類(lèi)型:CML/LVDS/LVPECL to LVCMOS/LVTTL 傳播延遲時(shí)間:1.9 ns 電源電流:14 mA 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MLF-8 |
| PI4ULS3V08ZFEX | 功能描述:轉(zhuǎn)換 - 電壓電平 Universal Bi- directionaLevel RoHS:否 制造商:Micrel 類(lèi)型:CML/LVDS/LVPECL to LVCMOS/LVTTL 傳播延遲時(shí)間:1.9 ns 電源電流:14 mA 電源電壓-最大:3.6 V 電源電壓-最小:3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:MLF-8 |
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