SWITCHING CHARACTERISTICS (Note 5) (CL
參數(shù)資料
型號: MC14521BFG
廠商: ON Semiconductor
文件頁數(shù): 4/9頁
文件大?。?/td> 0K
描述: IC DIVIDER 24STAGE FREQ 16SOEIAJ
產(chǎn)品變化通告: 1Q2012 Discontinuation 30/Mar/2012
標(biāo)準(zhǔn)包裝: 50
系列: 4000B
邏輯類型: 除以 2
元件數(shù): 1
每個元件的位元數(shù): 24
計數(shù)速率: 12MHz
觸發(fā)器類型: 負(fù)邊沿
電源電壓: 3 V ~ 18 V
工作溫度: -55°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 16-SOIC(0.209",5.30mm 寬)
供應(yīng)商設(shè)備封裝: 16-SOEIAJ
包裝: 管件
MC14521B
http://onsemi.com
4
SWITCHING CHARACTERISTICS (Note 5) (CL = 50 pF, TA = 25_C)
Characteristic
Symbol
VDD
Vdc
Min
Typ
(Note 6)
Max
Unit
Output Rise and Fall Time (Counter Outputs)
tTLH, tTHL = (1.5 ns/pF) CL + 25 ns
tTLH, tTHL = (0.75 ns/pF) CL + 12.5 ns
tTLH, tTHL = (0.55 ns/pF) CL + 12.5 ns
tTLH, tTHL
5.0
10
15
100
50
40
200
100
80
ns
Propagation Delay Time
Clock to Q18
tPHL, tPLH = (1.7 ns/pF) CL + 4415 ns
tPHL, tPLH = (0.66 ns/pF) CL + 1667 ns
tPHL, tPLH = (0.5 ns/pF) CL + 1275 ns
Clock to Q24
tPHL, tPLH = (1.7 ns/pF) CL + 5915 ns
tPHL, tPLH = (0.66 ns/pF) CL + 2167 ns
tPHL, tPLH = (0.5 ns/pF) CL + 1675 ns
tPHL, tPLH
5.0
10
15
4.5
1.7
1.3
9.0
3.5
2.7
ms
5.0
10
15
6.0
2.2
1.7
12
4.5
3.5
Propagation Delay Time
Reset to Qn
tPHL = (1.7 ns/pF) CL + 1215 ns
tPHL = (0.66 ns/pF) CL + 467 ns
tPHL = (0.5 ns/pF) CL + 350 ns
tPHL
5.0
10
15
1300
500
375
2600
1000
750
ns
Clock Pulse Width
tWH(cl)
5.0
10
15
385
150
120
140
55
40
ns
Clock Pulse Frequency
fcl
5.0
10
15
3.5
9.0
12
2.0
5.0
6.5
MHz
Clock Rise and Fall Time
tTLH, tTHL
5.0
10
15
15
5.0
4.0
ms
Reset Pulse Width
tWH(R)
5.0
10
15
1400
600
450
700
300
225
ns
Reset Removal Time
trem
5.0
10
15
30
0
– 40
– 200
– 160
– 110
ns
5. The formulas given are for the typical characteristics only at 25_C.
6. Data labelled “Typ” is not to be used for design purposes but is intended as an indication of the IC’s potential performance.
Figure 1. Power Dissipation Test Circuit and Waveform
PULSE
GENERATOR
VDD
VSS
Q18
Q19
Q20
Q21
Q22
Q23
Q24
CL
ID
IN 2
R
500
mF
0.01
mF
CERAMIC
20 ns
VDD
0 V
Vin
50% DUTY CYCLE
90%
10%
50%
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