TI394804121.docx
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TI394804121.docx
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TI394804121
SN54HC4020,SN74HC4020
14BITASYNCHRONOUSBINARYCOUNTERS
SCLS158E−DECEMBER1982−REVISEDSEPTEMBER2003
DWideOperatingVoltageRangeof2Vto6V(工作电压范围2v至6v)
DOutputsCanDriveUpTo10LSTTLLoads(输出可带动10个负载)
DLowPowerConsumption,80-∝AMaxICC(低功耗,最大可为80微安)
SN54HC4020...JORWPACKAGE
SN74HC4020...D,DB,N,NS,ORPWPACKAGE
(TOPVIEW)顶视图
DTypicaltpd=12ns(延时时间为12纳秒)
D±4-mAOutputDriveat5V(正负4毫安时,输出电压为5v)
DLowInputCurrentof1∝AMax(最低输出电流为1微安)
SN54HC4020...FKPACKAGE
(TOPVIEW)
QL
1
16
VCC
QM
QN
QF
QE
QG
QD
2
3
4
5
6
7
15
14
13
12
11
10
QK
QJ
QH
QI
CLR
CLK
QN
QF
NC
QE
QG
4
5
6
7
8
3212019
18
17
16
15
14
910111213
QJ
QH
NC
QI
CLR
GND
8
9
QA
NC−Nointernalconnection
description/orderinginformation(说明书)
The’HC4020devicesare14-stagebinaryripple-carrycountersthatadvanceonthenegative-goingedgeofthe
clockpulse.Thecountersareresettozero(alloutputslow)independentlyoftheclock(CLK)inputwhenthe
clear(CLR)inputgoeshigh.'HC4020的设计是时钟脉冲负边沿前进14级二进制的。
独立于时钟(CLK)输入时这些计数器被重置为零(所有输出低),清除(CLR)时输入变为高。
ORDERINGINFORMATION订购须知
†Packagedrawings,standardpackingquantities,thermaldata,symbolization,andPCBdesignguidelinesare
availableat/查询
Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsof
TexasInstrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
请注意,一个重要的保修通知在德州仪器半导体产品与免责声明及其关键应用会出现在本数据资料的最后
PRODUCTIONDATAinformationiscurrentasofpublicationdate.
ProductsconformtospecificationsperthetermsofTexasInstruments
standardwarranty.Productionprocessingdoesnotnecessarilyinclude
testingofallparameters.
Copyright2003,TexasInstrumentsIncorporated
OnproductscomplianttoMILPRF38535,allparametersaretested
unlessotherwisenoted.Onallotherproducts,production
processingdoesnotnecessarilyincludetestingofallparameters.
POSTOFFICEBOX655303
∙DALLAS,TEXAS75265
1
TA
PACKAGE†(封装)
ORDERABLE
PARTNUMBER(零件编号)
TOP-SIDE
MARKING(标记)
−40︒Cto85︒C
PDIP−N
Tubeof25
SN74HC4020N
SN74HC4020N
SOIC−D
Tubeof40
SN74HC4020D
HC4020
Reelof2500
SN74HC4020DR
Reelof250
SN74HC4020DT
SOP−NS
Reelof2000
SN74HC4020NSR
HC4020
SSOP−DB
Reelof2000
SN74HC4020DBR
HC4020
TSSOP−PW
Tubeof90
SN74HC4020PW
HC4020
Reelof2000
SN74HC4020PWR
Reelof250
SN74HC4020PWT
−55︒Cto125︒C
CDIP−J
Tubeof25
SNJ54HC4020J
SNJ54HC4020J
CFP−W
Tubeof150
SNJ54HC4020W
SNJ54HC4020W
LCCC−FK
Tubeof55
SNJ54HC4020FK
SNJ54HC4020FK
DQ
GND
NC
AQ
CLK
NC
VCC
QK
QM
QL
SN54HC4020,SN74HC4020
14BITASYNCHRONOUSBINARYCOUNTERS
SCLS158E−DECEMBER1982−REVISEDSEPTEMBER2003
FUNCTIONTABLE(功能表)(eachbuffer)
logicdiagram(逻辑图)(positivelogic)
CLR
11
R
R
R
R
R
R
CLK
10
T
T
T
T
T
T
9
QA
7
QD
5
QE
4
QF
R
T
6
QG
R
T
13
QH
R
T
12
QI
R
T
14
QJ
R
T
15
QK
R
T
1
QL
R
T
2
QM
R
T
3
QN
PinnumbersshownarefortheD,DB,J,N,NS,PW,andWpackages.
absolutemaximumratingsoveroperatingfree-airtemperaturerange(在工作时的温度范围和额定电压范围)(unlessotherwisenoted除非另有说明)†
Supplyvoltagerange,VCC(电源电压范围)..........................................................−0.5Vto7V
Inputclampcurrent,(输入电流范围)IIK(VI<0orVI>VCC)(seeNote1)....................................±20mA
Outputclampcurrent,(输出电流范围)IOK(VO<0orVO>VCC)(seeNote1)................................±20mA
Continuousoutputcurrent,IO(VO=0toVCC)..............................................±25mA
ContinuouscurrentthroughVCCorGND...................................................±50mA
Packagethermalimpedance,⎝JA(seeNote2):
Dpackage...................................73︒C/W
DBpackage.................................82︒C/W
Npackage...................................67︒C/W
NSpackage.................................64︒C/W
PWpackage................................108︒C/W
Storagetemperaturerange,(储存温度范围)Tstg...................................................−65︒Cto150︒C
†Stressesbeyondthoselistedunder“absolutemaximumratings”maycausepermanentdamagetothedevice.Thesearestressratingsonly,and
functionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunder“recommendedoperatingconditions”isnot
implied.Exposuretoabsolute-maximum-ratedconditionsforextendedperiodsmayaffectdevicereliability.
超过“绝对最大额定值时”,就可能造设备成永久性损坏。
这些仅仅是极限参数,长时间暴露在绝对最大额定条件下可能影响器件的可靠性。
NOTES:
1.Theinputandoutputvoltageratingsmaybeexceedediftheinputandoutputcurrentratingsareobserved.如果执行输入和输出电流额定值时输入和输出可能会超过额定电压。
2.ThepackagethermalimpedanceiscalculatedinaccordancewithJESD51-7.封装的热阻抗的计算方法按照JESD51-7。
2
POSTOFFICEBOX655303
∙DALLAS,TEXAS75265
INPUTS(输入)
FUNCTION(功能)
CLKCLR
↑L
↓L
XH
Nochange
Advancetonextstage
AlloutputsL
SN54HC4020,SN74HC4020
14BITASYNCHRONOUSBINARYCOUNTERS
SCLS158E−DECEMBER1982−REVISEDSEPTEMBER2003
recommendedoperatingconditions(建议工作条件)(seeNote3)
NOTE3:
AllunusedinputsofthedevicemustbeheldatVCCorGNDtoensureproperdeviceoperation.RefertotheTIapplicationreport,
ImplicationsofSloworFloatingCMOSInputs,literaturenumberSCBA004.器件的所有未使用的输入必须执行VCC或GND,以确保器件正常工作
electricalcharacteristicsoverrecommendedoperatingfree-airtemperaturerange推荐工作时温度范围(unless
otherwisenoted)
POSTOFFICEBOX655303
∙DALLAS,TEXAS75265
3
SN54HC4020
SN74HC4020
单位UNIT
MINNOMMAX
MINNOMMAX
Supplyvoltage(电源电压)
VCC
256
256
V
VHigh-levelinputvoltage(高电平输入电压)
IH
=2V
VCC
1.5
1.5
V
=4.5V
VCC
3.15
3.15
=6V
VCC
4.2
4.2
VLow-levelinputvoltage(低电平输入电压)
IL
=2V
VCC
0.5
0.5
V
=4.5V
VCC
1.35
1.35
=6V
VCC
1.8
1.8
Inputvoltage(输入电压)
VI
0
VCC
0
VCC
V
Outputvoltage(输出电压)
VO
0
VCC
0
VCC
V
∆t/∆vInputtransitionrise/falltime
=2V
VCC
1000
1000
ns
=4.5V
VCC
500
500
=6V
VCC
400
400
Operatingfree-airtemperature(最适温度)
TA
−55125
−4085
︒C
PARAMETER(参数)
TESTCONDITIONS(测量条件)
VCC
TA=25︒C
SN54HC4020
SN74HC4020
UNIT单位
MINTYPMAX
MINMAX
MINMAX
V
OH
V=or
IVIHVIL
IOH=−20∝A
2V
1.91.998
1.9
1.9
V
4.5V
4.44.499
4.4
4.4
6V
5.95.999
5.9
5.9
=−4mA
IOH
4.5V
3.984.3
3.7
3.84
=−5.2mA
IOH
6V
5.485.8
5.2
5.34
V
OL
V=or
IVIHVIL
IOL=20∝A
2V
0.0020.1
0.1
0.1
V
4.5V
0.0010.1
0.1
0.1
6V
0.0010.1
0.1
0.1
=4mA
IOL
4.5V
0.170.26
0.4
0.33
=5.2mA
IOL
6V
0.150.26
0.4
0.33
II
=or0
VIVCC
6V
±0.1±100
±1000
±1000
nA
ICC
=or0,=0
VIVCCIO
6V
8
160
80
∝A
Ci
2Vto6V
310
10
10
pF
SN54HC4020,SN74HC4020
14BITASYNCHRONOUSBINARYCOUNTERS
SCLS158E−DECEMBER1982−REVISEDSEPTEMBER2003
timingrequirementsoverrecommendedoperatingfree-airtemperaturerange(工作时的温度的范围)(unlessotherwise
noted)
switchingcharacteristicsoverrecommendedoperatingfree-airtemperaturerange(一般的开关特性),CL=50pF
(unlessotherwisenoted)(seeFigure1)
operatingcharacteristics,(其它特别的)TA=25︒C
4
POSTOFFICEBOX655303
∙DALLAS,TEXAS75265
VCC
TA=25︒C
SN54HC4020
SN74HC4020
UNIT
MINMAX
MINMAX
MINMAX
Clockfrequency(时钟工作频率)
fclock
2V
5.5
3.7
4.3
MHz
4.5V
28
19
22
6V
33
22
25
Pulseduration(脉冲时间)
tw
CLKhighorlow
2V
90
135
115
ns
4.5V
18
27
23
6V
15
23
20
CLRhigh
2V
70
105
90
4.5V
14
21
18
6V
12
18
25
tsuSetuptime,CLRinactivebeforeCLK↓(下降沿有效)
2V
60
90
75
ns
4.5V
12
18
15
6V
10
15
13
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
VCC
TA=25︒C
SN54HC4020
SN74HC4020
UNIT
MINTYPMAX
MINMAX
MINMAX
fmax
2V
5.510
3.7
4.3
MHz
4.5V
2845
19
22
6V
3353
22
25
tpd
CLK
Q
A
2V
62150
225
190
ns
4.5V
1630
45
38
6V
1226
38
32
tPHL
CLR
Any
2V
63140
210
175
ns
4.5V
1728
42
35
6V
1324
36
30
tt
Any
2V
2875
110
95
ns
4.5V
815
22
19
6V
613
19
16
PARAMETER参数
TESTCONDITIONS(实验条件)
TYP
UNIT
CpdPowerdissipationcapacitance功率耗散电容
Noload没有负载时
88
pF
SN54HC4020,SN74HC4020
14BITASYNCHRONOUSBINARYCOUNTERS
SCLS158E−DECEMBER1982−REVISEDSEPTEMBER2003
PARAMETERMEASUREMENTINFORMATION
参数测量信息
输出
测试点CL=50pF
(seeNoteA)
参考输入
tsu
50%
VCC
0V
带负载时电路
Data
Input
50%
10%
90%
90%
VCC
50%
10%0V
输入
50%
50%
VCC
0V
trtf
VOLTAGEWAVEFORMS(电压波形)
SETUPANDINPUTRISEANDFALLTIMES
设置和输入上升和下降时间
tPLH
tPHL
同相
输出
50%
10%
90%
tr
90%
50%
10%
tf
VOH
VOL
High-Level
Pulse
50%
50%
VCC
异相输出
tPHL
90%
50%
10%
tf
tPLH
50%
10%
90%
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