參數(shù)資料
型號(hào): HCF4541BC1
廠商: 意法半導(dǎo)體
英文描述: PROGRAMMABLE TIMER
中文描述: 可編程定時(shí)器
文件頁(yè)數(shù): 6/11頁(yè)
文件大?。?/td> 247K
代理商: HCF4541BC1
DIGITAL TIMER APPLICATION
A positive MASTER RESET pulse clears the
counters andlatch. Theoutputgoes high and keeps
up tillthenumber ofpulses, selected byAandB,are
counted.Thiscircuitis retriggerable andisas accur-
ate as theinput frequency. If a moreaccurate circuit
is desired, an external clock can be used on pin 3.
A set-up time equal to the width of theone shot out-
put is required immediately following initial power
up, during which time theoutput will be high.
FREQUENCY SELECTION TABLE
TRUTH TABLE
A
B
N
°
of Stages
N
13
10
18
16
Count
2
N
8192
1024
256
65536
0
0
1
1
0
1
0
1
Pin
State
0
1
5
6
Auto Reset On
Master Reset Off
Output Initially
Low AfterReset (Q)
Single Transition Mode
AutoReset Disable
Master Reset On
Output Initially
HighAfter Reset (Q)
Recycle Mode
9
10
HCC/HCF4541B
6/11
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PDF描述
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