參數(shù)資料
型號(hào)： LTC690M
廠商： Linear Technology Corporation
英文描述： Microprocessor Supervisory Circuits
中文描述： 微處理器監(jiān)控電路
文件頁(yè)數(shù)： 1/16頁(yè)
文件大?。?/td> 141K
代理商： LTC690M
1
LTC 690/LTC 691
LTC 694/LTC 695
Microprocessor
Supervisory C ircuits
ADJ
V
IN
V
OUT
10
μ
F
V
IN
≥
7.5V
5V
100
μ
F
0.1
μ
F
μ
P NMI
μ
P
POWER
POWER TO
CMOS RAM
I/O LINE
μ
P RESET
μ
P
SYSTEM
0.1
μ
F
3V
51k
10k
690 TA01
LT
1086-5
MICROPROCESSOR RESET, BATTERY BACK-UP, POWER FAILURE
WARNING AND WATCHDOG TIMING ARE ALL IN A SINGLE CHIP
FOR MICROPROCESSOR SYSTEMS
LTC690/LTC691
LTC694/LTC695
V
BATT
PFI
WDI
RESET
PFO
V
OUT
V
CC
GND
0.1
μ
F
100
+
+
RESET Output Voltage vs
Supply Voltage
I
UL Recognized File # E145770
I
GuaranteedReset Assertion at V
CC
= 1V
I
1.5mA Maximum Supply Current
I
Fast (35ns Max) Onboard Gating of RAM Chip
Enable Signals
I
SO-8 and S16 Packaging
I
4.65V Precision Voltage Monitor
I
Power OK/Reset Time Delay: 50ms, 200ms
or Adjustable
I
Minimum External Component Count
I
1
μ
A Maximum Standby Current
I
Voltage Monitor for Power-Fail
or Low-Battery Warning
I
Thermal Limiting
I
Performance Specified Over Temperature
I
Superior Upgrade for MAX690 Family
The LTC
690 family provides complete power supply
monitoring and battery control functions for microproces-
sor reset, battery back-up, CMOS RAM write protection,
power failure warning and watchdog timing. A precise
internal voltage reference and comparator circuit monitor
the power supply line. When an out-of-tolerance condition
occurs, the reset outputs are forced to active states and the
chip enable output unconditionally write-protects external
memory. In addition, the RESET output is guaranteed to
remain logic low even with V
CC
as low as 1V.
The LTC690 family powers the active CMOS RAMs with a
charge pumped NMOS power switch to achieve low drop-
out 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.
For an early warning of impending power failure, the
LTC690 family provides an internal comparator with a
user-defined threshold. An internal watchdog timer is also
available, which forces the reset pins to active states when
the watchdog input is not toggled prior to a preset time-out
period.
I
Critical
μ
P Power Monitoring
I
Intelligent Instruments
I
Battery-Powered Computers and Controllers
I
Automotive Systems
SUPPLY VOLTAGE (V)
0
R
3
4
5
4
2
1
0
1
2
3
5
T
= 25
°
C
EXTERNAL PULL-UP = 10
μ
A
V
BATT
= 0V
690 TA02
, LTC and LT are registered trademarks of Linear Technology Corporation.
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
相關(guān)PDF資料
PDF描述
LTC691C Microprocessor Supervisory Circuits
LTC691CN Microprocessor Supervisory Circuits
LTC691I Microprocessor Supervisory Circuits
LTC691ISW Microprocessor Supervisory Circuits
LTC690MJ8 OSCILLATOR 27.00MHZ SMD
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LTC690MJ8 制造商:LINER 制造商全稱:Linear Technology 功能描述:Microprocessor Supervisory Circuits
LTC691 制造商:LINER 制造商全稱:Linear Technology 功能描述:Microprocessor Supervisory Circuits
LTC6910-1 制造商:LINER 制造商全稱:Linear Technology 功能描述:Digitally Controlled Programmable Gain Amplifiers in SOT-23
LTC6910-1CTS8 制造商:LINER 制造商全稱:Linear Technology 功能描述:Digitally Controlled Programmable Gain Amplifiers in SOT-23
LTC6910-1CTS8#PBF 制造商:Linear Technology 功能描述:SP Amp Variable Gain Amp Single R-R I/O 制造商:Linear Technology 功能描述:1 Programmable Gain Amplifier Bulk 制造商:Linear Technology 功能描述:AMPLIFIER, PROG GAIN, 11MHZ, TSOT-23-8; No. of Amplifiers:1; Bandwidth:11MHz; Supply Voltage Range:2.7V to 10.5V; Amplifier Case Style:TSOT-23; No. of Pins:8; No. of Channels:1; Rail To Rail I/O Type:Rail-Rail I/O ;RoHS Compliant: Yes
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*