參數(shù)資料
型號(hào): MC14568BD
廠商: MOTOROLA INC
元件分類: 通用總線功能
英文描述: Phase Comparator and Programmable Counters
中文描述: 4000/14000/40000 SERIES, ASYN POSITIVE EDGE TRIGGERED UP DIVIDE BY N COUNTER, PDSO16
封裝: PLASTIC, SOIC-16
文件頁(yè)數(shù): 3/12頁(yè)
文件大小: 323K
代理商: MC14568BD
MOTOROLA CMOS LOGIC DATA
3
MC14568B
Characteristic
Symbol
V
Min
Typ
Max
Unit
Output Rise Time
tTLH
5.0
10
15
180
90
65
360
180
130
ns
Output Fall Time
tTHL
5.0
10
15
100
50
40
200
100
80
ns
Minimum Pulse Width, C1, Q1/C2, or PCin Input
tWH
5.0
10
15
125
60
45
250
120
90
ns
Maximum Clock Rise and Fall Time,
C1, Q1/C2, or PCin Input
tTLH,
tTHL
5.0
10
15
15
15
15
μ
s
PHASE COMPARATOR
Input Resistance
Rin
5.0 to 15
106
M
Input Sensitivity, dc Coupled
5.0 to 15
See Input Voltage
Turn–Off Delay Time,
PCout and LD Outputs
tPHL
5.0
10
15
550
195
120
1100
390
240
ns
Turn–On Delay Time.
PCout and LD Outputs
tPLH
5.0
10
15
675
300
190
1350
600
380
ns
DIVIDE–BY–4, 16, 64 OR 100 COUNTER (D1)
Maximum Clock Pulse Frequency
Division Ratio = 4, 64 or 100
fcl
5.0
10
15
3.0
8.0
10
6.0
16
22
MHz
Division Ratio = 16
5.0
10
15
1.0
3.0
5 0
2.5
6.3
9.7
Propagation Delay Time, Q1/C2 Output
Division Ratio = 4, 64 or 100
tPLH,
tPHL
5.0
10
15
450
190
130
900
380
260
ns
Division Ratio = 16
5.0
10
15
720
300
200
1440
600
400
PROGRAMMABLE DIVIDE–BY–N 4–BIT COUNTER (D2)
Maximum Clock Pulse Frequency
(Figure 3a)
fcl
5.0
10
15
1.2
3.0
4.0
1.8
8.5
12
MHz
Turn–On Delay Time, “0” Output
(Figure 3a)
tPLH
5.0
10
15
450
190
130
900
380
260
ns
Turn–Off Delay Time, “0” Output
(Figure 3a)
tPHL
5.0
10
15
225
85
60
450
170
150
ns
Minimum Preset Enable Pulse Width
tWH(PE)
5.0
10
15
75
40
30
250
100
75
ns
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