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參數(shù)資料
| 型號(hào)： | MC1455B |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | Timers |
| 中文描述： | 定時(shí)器 |
| 文件頁(yè)數(shù)： | 1/11頁(yè) |
| 文件大小： | 181K |
| 代理商： | MC1455B |
Semiconductor Components Industries, LLC, 2006
February, 2006 Rev. 9
1
Publication Order Number:
MC1455/D
MC1455, MC1455B,
NCV1455B
Timers
The MC1455 monolithic timing circuit is a highly stable controller
capable of producing accurate time delays or oscillation. Additional
terminals are provided for triggering or resetting if desired. In the time
delay mode, time is precisely controlled by one external resistor and
capacitor. For astable operation as an oscillator, the freerunning
frequency and the duty cycle are both accurately controlled with two
external resistors and one capacitor. The circuit may be triggered and
reset on falling waveforms, and the output structure can source or sink
up to 200 mA or drive MTTL circuits.
Features
Direct Replacement for NE555 Timers
Timing from Microseconds through Hours
Operates in Both Astable and Monostable Modes
Adjustable Duty Cycle
High Current Output Can Source or Sink 200 mA
Output Can Drive MTTL
Temperature Stability of 0.005% per
°
C
Normally ON or Normally OFF Output
PbFree Packages are Available
http://onsemi.com
See detailed ordering and shipping information in the package
dimensions section on page 9 of this data sheet.
ORDERING INFORMATION
x
yyy
A
L
Y, YY
W, WW = Work Week
or G
= PbFree Package
= B or V
= BP1 or P1
= Assembly Location
= Wafer Lot
= Year
SOIC8
D SUFFIX
CASE 751
1
8
MARKING
DIAGRAMS
PDIP8
P1 SUFFIX
CASE 626
1
8
1
8
MC1455yyy
AWL
YYWWG
1455x
ALYW
1
8
Figure 1. 22 Second Solid State Time Delay Relay Circuit
Figure 2. Representative Block Diagram
Figure 3. General Test Circuit
1.0 k
Load
MT2
10 k
0.1 F
0.01 F
1
5
2
4
3
8
6
7
1.0 F
C
20M
G
MT1
10 V
1N4003
1
1N4740
3.5 k
250 V
10 F
+
t = 1.1; R and C = 22 sec
Time delay (t) is variable by
changing R and C (see Figure 16).
V
CC
Threshold
Control Voltage
Trigger
6
5
2
5 k
8
5 k
5 k
+
Comp
A
+
Comp
B
1
GND
Reset
4
R
S
Flip
Flop
Q
Inhibit/
Reset
7
3
Discharge
Output
R
MC1455
V
R
Reset
5
4
8
I
CC
V
CC
700
Discharge
6
Threshold
7
I
th
2.0 k
V
S
Trigger
2
GND
1
3
I
Sink
I
Source
V
O
0.01 F
+
Control
Voltage
Output
V
CC
MC1455
Test circuit for measuring DC parameters (to set output and measure
parameters):
a) When V
S
2/3 V
CC
, V
O
is low.
b) When V
S
1/3 V
, V
is high.
c) When V
is low, Pin 7 sinks current. To test for Reset, set V
c)
high, apply Reset voltage, and test for current flowing into Pin 7.
c)
When Reset is not in use, it should be tied to V
CC
.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC1455BD | 功能描述:計(jì)時(shí)器和支持產(chǎn)品 ANA TIMING CIRCUIT RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時(shí)器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| MC1455BDR2 | 功能描述:計(jì)時(shí)器和支持產(chǎn)品 ANA TIMING CIRCUIT RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時(shí)器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| MC1455BDR2G | 功能描述:計(jì)時(shí)器和支持產(chǎn)品 ANA TIMING CIRCUIT RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時(shí)器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| MC1455BP1 | 功能描述:計(jì)時(shí)器和支持產(chǎn)品 ANA TIMING CIRCUIT RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時(shí)器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
| MC1455BP1G | 功能描述:計(jì)時(shí)器和支持產(chǎn)品 ANA TIMING CIRCUIT RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時(shí)器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel |
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