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參數(shù)資料
| 型號： | MC14541B |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | Programmable Timer(可編程定時器（16級）) |
| 中文描述： | 可編程定時器（可編程定時器（16級）） |
| 文件頁數(shù)： | 1/10頁 |
| 文件大?。?/td> | 114K |
| 代理商： | MC14541B |
Semiconductor Components Industries, LLC, 2005
August, 2005 Rev. 9
1
Publication Order Number:
MC14541B/D
MC14541B
Programmable Timer
The MC14541B programmable timer consists of a 16stage binary
counter, an integrated oscillator for use with an external capacitor and
two resistors, an automatic poweron reset circuit, and output control
logic.
Timing is initialized by turning on power, whereupon the poweron
reset is enabled and initializes the counter, within the specified V
DD
range. With the power already on, an external reset pulse can be
applied. Upon release of the initial reset command, the oscillator will
oscillate with a frequency determined by the external RC network. The
16stage counter divides the oscillator frequency (f
osc
) with the n
th
stage frequency being f
osc
/2
n
.
Features
Available Outputs 2
8
, 2
10
, 2
13
or 2
16
Increments on Positive Edge Clock Transitions
Builtin Low Power RC Oscillator (
±
2% accuracy over temperature
range and
±
20% supply and
±
3% over processing at < 10 kHz)
Oscillator May Be Bypassed if External Clock Is Available
(Apply external clock to Pin 3)
External Master Reset Totally Independent of Automatic Reset
Operation
Operates as 2
n
Frequency Divider or Single Transition Timer
Q/Q Select Provides Output Logic Level Flexibility
Reset (auto or master) Disables Oscillator During Resetting to
Provide No Active Power Dissipation
Clock Conditioning Circuit Permits Operation with Very Slow Clock
Rise and Fall Times
Automatic Reset Initializes All Counters On Power Up
Supply Voltage Range = 3.0 Vdc to 18 Vdc with Auto Reset
Supply Voltage Range =
Disabled (Pin 5 = V
DD
)
Supply Voltage Range
= 8.5 Vdc to 18 Vdc with Auto Reset
Supply Voltage Range =
Enabled (Pin 5 = V
SS
)
PbFree Packages are Available*
PIN ASSIGNMENT
NC = NO CONNECTION
11
12
13
14
8
9
10
5
4
3
2
1
7
6
MODE
NC
A
B
V
DD
Q
Q/Q SEL
NC
R
S
C
tc
R
tc
V
SS
MR
AR
*For additional information on our PbFree strategy and soldering details, please
download the ON Semiconductor Soldering and Mounting Techniques
Reference Manual, SOLDERRM/D.
http://onsemi.com
MARKING
DIAGRAMS
A
WL, L
YY, Y
WW, W
G
= Assembly Location
= Wafer Lot
= Year
= Work Week
= PbFree Indicator
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
ORDERING INFORMATION
1
14
PDIP14
P SUFFIX
CASE 646
MC14541BCP
AWLYYWWG
SOIC14
D SUFFIX
CASE 751A
TSSOP14
DT SUFFIX
CASE 948G
1
14
14541BG
AWLYWW
14
541B
ALYW
1
14
SOEIAJ14
F SUFFIX
CASE 965
1
14
MC14541B
ALYWG
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| MC14541BCP | 功能描述:計時器和支持產(chǎn)品 LOG CMOS OSILATR TIMER RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時器數(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 |
| MC14541BCPG | 功能描述:計時器和支持產(chǎn)品 3-18V with Auto RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時器數(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 |
| MC14541BD | 功能描述:計時器和支持產(chǎn)品 LOG CMOS OSILATR TIMER RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時器數(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 |
| MC14541BDG | 功能描述:計時器和支持產(chǎn)品 3-18V with Auto RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時器數(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 |
| MC14541BDR2 | 功能描述:計時器和支持產(chǎn)品 LOG CMOS OSILATR TIMER RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時器數(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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