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Datasheet > LTC694CS8-3.3#TRPBF
LTC694CS8-3.3#TRPBF PDF预览

LTC694CS8-3.3#TRPBF

更新时间： 2024-11-15 20:59:11
品牌 Logo 应用领域
凌特 - Linear 光电二极管
页数 文件大小 规格书
20页 192K
描述
LTC694-3.3 - 3.3V Microprocessor Supervisory Circuits; Package: SO; Pins: 8; Temperature Range: 0°C to 70°C

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LTC694CS8-3.3#TRPBF 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：SOIC包装说明：SOP, SOP8,.25
针数：8Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.11其他特性：RESET THRESHOLD VOLTAGE IS 2.9 V
可调阈值：NO模拟集成电路 - 其他类型：POWER SUPPLY MANAGEMENT CIRCUIT
JESD-30 代码：R-PDSO-G8JESD-609代码：e3
长度：4.903 mm湿度敏感等级：1
信道数量：1功能数量：1
端子数量：8最高工作温度：70 °C
最低工作温度：封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装等效代码：SOP8,.25
封装形状：RECTANGULAR封装形式：SMALL OUTLINE
峰值回流温度（摄氏度）：250电源：3.3 V
认证状态：Not Qualified座面最大高度：1.752 mm
子类别：Power Management Circuits最大供电电流 (Isup)：2.5 mA
最大供电电压 (Vsup)：5.5 V最小供电电压 (Vsup)：3 V
标称供电电压 (Vsup)：3.3 V表面贴装：YES
技术：CMOS温度等级：COMMERCIAL
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：3.899 mm
Base Number Matches：1

LTC694CS8-3.3#TRPBF 数据手册

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LTC694-3.3/LTC695-3.3  
3.3V Microprocessor  
Supervisory Circuits  
FEATURES  
DESCRIPTION  
TheLTC®694-3.3/LTC695-3.3providecomplete3.3Vpower  
supply monitoring and battery control functions. These  
include power-on reset, battery back-up, RAM write pro-  
tection, power failure warning and watchdog timing. The  
devicesarepincompatibleupgradesoftheLTC694/LTC695  
that are optimized for 3.3V systems. Operating power  
consumption has been reduced to 0.6mW (typical) and  
3μW maximum in battery back-up mode. Microprocessor  
reset and memory write protection are provided when the  
supply falls below 2.9V. The RESET output is guaranteed  
n
Guaranteed Reset Assertion at V = 1V  
CC  
n
Pin Compatible with LTC694/LTC695 for 3.3V Systems  
n
200μA Typical Supply Current  
Fast (30ns Typ) Onboard Gating of  
RAM Chip Enable Signals  
SO-8 and S16 Packages  
2.90V Precision Voltage Monitor  
n
n
n
n
Power OK/Reset Time Delay: 200ms or Adjustable  
n
Minimum External Component Count  
n
1μA Maximum Standby Current  
n
Voltage Monitor for Power-Fail or  
to remain logic low with V as low as 1V.  
CC  
Low-Battery Warning  
Thermal Limiting  
The LTC694-3.3/LTC695-3.3 power the active RAMs with  
a charge pumped NMOS power switch to achieve low  
dropout and low supply current. When primary power is  
lost, auxiliary power, connected to the battery input pin,  
powers the RAMs in standby through an efficient PMOS  
switch.  
n
n
Performance Specified Over Temperature  
APPLICATIONS  
n
3.3V Low Power Systems  
n
For an early warning of impending power failure, the  
LTC694-3.3/LTC695-3.3 provide an internal comparator  
with a user-defined threshold. An internal watchdog timer  
isalsoavailable,whichforcestheresetpinstoactivestates  
when the watchdog input is not toggled prior to a preset  
timeout period.  
Critical μP Power Monitoring  
n
Intelligent Instruments  
n
Battery-Powered Computers and Controllers  
n
Automotive Systems  
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear  
Technology Corporation. All other trademarks are the property of their respective owners.  
TYPICAL APPLICATION  
RESET Output Voltage  
vs Supply Voltage  
LT1129-3.3  
V
V
≥ 5V  
IN  
5
3.3V  
V
V
V
POWER TO  
μP  
V
IN  
OUT  
CC  
OUT  
+
+
CMOS RAM POWER  
0.1μF  
100μF  
0.1μF  
2.4V  
1μF  
OUT SENSE  
SHDN  
GND  
LTC695-3.3  
μP  
SYSTEM  
DECODER OUTPUT  
RAM CS  
μP RESET  
μP NMI  
4
3
CE IN  
BATT  
CE OUT  
RESET  
PFO  
51k  
18k  
PFI  
WDI  
I/O LINE  
2
1
0
GND  
MICROPROCESSOR RESET, BATTERY BACK-UP,  
100Ω  
RAM WRITE PROTECTION, POWER WARNING AND  
WATCHDOG TIMING ARE ALL IN A SINGLE CHIP  
FOR 3.3V MICROPROCESSOR SYSTEM  
0.1μF  
694/5-3.3 TA01  
0
1
2
3
4
5
SUPPLY VOLTAGE (V)  
694/5-3.3 TA02  
69453fb  
1
1234567...20

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LTC694CS8-3.3#TRPBF 替代型号

型号 品牌 替代类型 描述 数据表
LTC694CS8-3.3#PBF Linear

完全替代

 LTC694-3.3 - 3.3V Microprocessor Supervisory Circuits; Package: SO; Pins: 8; Temperature R

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