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CD74HC4518中文资料

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Pinout
CD74HC4518 CD74HC4520, CD74HCT4520
(PDIP, SOIC) TOP VIEW
1CP 1 1E 2
1Q0 3 1Q1 4 1Q2 5 1Q3 6 1MR 7 GND 8
16 VCC 15 2MR 14 2Q3 13 2Q2 12 2Q1 11 2Q0 10 2E 9 2CP
[ /Title (CD74 HC451 8, CD74 HC452 0, CD74 HCT45 20) /Subject
Features
Description
• Positive or Negative Edge Triggering
• Synchronous Internal Carry Propagation
Thermal Information
Thermal Resistance (Typical, Note 3)
θJA (oC/W)
PDIP Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
90
SOIC Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
• Wide Operating Temperature Range . . . -55oC to 125oC
• Balanced Propagation Delay and Transition Times
• Significant Power Reduction Compared to LSTTL Logic ICs
Ordering Information
PART NUMBER TEMP. RANGE (oC) PACKAGE
PKG. NO.
CD74HC4518E
-55 to 125
16 Ld PDIP E16.3
CD74HC4520E
-55 to 125
16 Ld PDIP E16.3
CD74HCT4520E
The Harris CD74HC4518 is a dual BCD up-counter. The Harris CD74HC4520 and CD74HCT4520 are dual binary up-counters. Each device consists of two independent internally synchronous 4-stage counters. The counter stages are D-type flip-flops having interchangeable CLOCK and ENABLE lines for incrementing on either the positive-going or the negative-going transition of CLOCK. The counters are cleared by high levels on the MASTER RESET lines. The counter can be cascaded in the ripple mode by connecting Q3 to the ENABLE input of the subsequent counter while the CLOCK input of the latter is held low.
元器件交易网
Data sheet acquired from Harris Semiconductor SCHS216 November 1997
CD74HC4518, CD74HC4520, CD74HCT4520
High Speed CMOS Logic Dual Synchronous Counters
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.
Copyright © Harris Corporation 1997
-55 to 125
16 Ld PDIP E16.3
CD74HC4520M
-55 to 125
16 Ld SOIC M16.15
CD74HCT4520M
-55 to 125
16 Ld SOIC M16.15
NOTES:
1. When ordering, use the entire part number. Add the suffix 96 to obtain the variant in the tape and reethe component mounted on an evaluation PC board in free air.
DC Electrical Specifications
PARAMETER HC TYPES High Level Input Voltage
HC Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2V to 6V HCT Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4.5V to 5.5V DC Input or Output Voltage, VI, VO . . . . . . . . . . . . . . . . . 0V to VCC Input Rise and Fall Time 2V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000ns (Max) 4.5V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500ns (Max) 6V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400ns (Max)
Maximum Lead Temperature (Soldering 10s) . . . . . . . . . . . . . 300oC
(SOIC - Lead Tips Only)
Operating Conditions
Temperature Range, TA . . . . . . . . . . . . . . . . . . . . . . -55oC to 125oC Supply Voltage Range, VCC
Absolute Maximum Ratings
DC Supply Voltage, VCC . . . . . . . . . . . . . . . . . . . . . . . . -0.5V to 7V DC Input Diode Current, IIK
For VI < -0.5V or VI > VCC + 0.5V . . . . . . . . . . . . . . . . . . . . . .±20mA DC Output Diode Current, IOK
TRUTH TABLE
MR L L L L L L H
OUTPUT STATE Increment Counter Increment Counter
No Change No Change No Change No Change Q0 thru Q3 = L
2
元器件交易网 CD74HC4518, CD74HC4520, CD74HCT4520
For VO < -0.5V or VO > VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±20mA DC Output Source or Sink Current per Output Pin, IO
For VO > -0.5V or VO < VCC + 0.5V . . . . . . . . . . . . . . . . . . . .±25mA DC VCC or Ground Current, ICC . . . . . . . . . . . . . . . . . . . . . . . . .±50mA
2. Wafer or die for this part number is available which meets all electrical specifications. Please contact your local sales office or Harris customer service for ordering information.
• Fanout (Over Temperature Range) - Standard Outputs . . . . . . . . . . . . . . . 10 LSTTL Loads - Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads

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CD74HC4538中文资料

CD74HC4538中文资料

Ordering Information
TEMP. RANGE
PART NUMBER
(oC)
PACKAGE

PKG. NO.
CD54HC4538F
-55 to 125 16 Ld CERDIP F16.3
CD74HC4538E
-55 to 125 16 Ld PDIP
E16.3
CD74HCT4538E
VCC
VCC
RX 2(14)
CX
1(15)
8
VCC
3(13) R
4(12) A
5(11) B
16 VCC
HIGH Z
VCC
D R1 R2 Q
CL FF CL
Q
VCC
R1
+ COMP II
-
R2
VCC
6(10) Q
7(9) Q
FIGURE 2. LOGIC DIAGRAM (1 MONO)
FUNCTIONAL TERMINAL CONNECTIONS
1
File Number 1671.2
元器件交易网 CD54HC4538, CD74HC4538, CD74HCT4538
Functional Diagram
1Cx 1Rx
1
2
VCC
1Cx 4 1A
1RxCx 6
1Q
5 1B
MONO 1
7 1Q
3 1R
13 2R
12 2A
元器件交易网
Data sheet acquired from Harris Semiconductor SCHS123 June 1998
CD54HC4538, CD74HC4538, CD74HCT4538
CD4518同步加法计数器(中文资料)

CD4518同步加法计数器(中文资料)

同步加法计数器CD4518,CD4520中文资料二、十进制同步加法计数器CD4518,CD4520中文资料CD4518/CC4518是二、十进制（8421编码）同步加计数器，内含两个单元的加计数器，其功能表如真值表所示。

每单个单元有两个时钟输入端CLK和EN，可用时钟脉冲的上升沿或下降沿触发。

由表可知，若用ENABLE信号下降沿触发，触发信号由EN端输入，CLK端置“0”；若用CLK信号上升沿触发，触发信号由CL℃K端输入，ENABLE端置“1”。

RESET端是清零端，RESET端置“1”时，计数器各端输出端Q1～Q4均为“0”，只有RESET端置“0”时，CD4518才开始计数。

CD4518采用并行进位方式，只要输入一个时钟脉冲，计数单元Q1翻转一次；当Q1为1，Q4为0时，每输入一个时钟脉冲，计数单元Q2翻转一次；当Q1=Q2=1时，每输入一个时钟脉冲Q3翻转一次；当Q1=Q2=Q3=1或Q1=Q4=1时，每输入一个时钟脉冲Q4翻转一次。

这样从初始状态（“0”态）开始计数，每输入10个时钟脉冲，计数单元便自动恢复到“0”态。

若将第一个加计数器的输出端Q4A 作为第二个加计数器的输入端ENB的时钟脉冲信号，便可组成两位8421编码计数器，依次下去可以进行多位串行计数。

CD4520/CC4520为二进制加计数器，由两个相同的内同步4级计数器构成。

计数器级为D型触发器，具有内部可交换CP和EN线，用于在时钟上升沿或下降沿加计数。

在单个单元运算中，EN输入保持高电平，且在CP上升沿进位。

CR线为高电平时，计数器清零。

计数器在脉动模式可级联，通过将Q3连接至下—计数器的EN输入端可实现级联，同时后者的CP输入保持低电平。

引脚功能：引脚符号功能1 9CLOCK时钟输入端7 15RESET消除端2 10ENABLE计数允许控制端3 4 5 6Q1A-Q4A计数输出端11 12 13 14Q1B-Q4B计数输出端8 VSS地16VDD电源正CD4518 引脚图功能图CD4518逻辑图CD4520逻辑图真值表功能：CL℃KENABLERESETACTION上升沿10加计数0下降沿0加计数下降沿X0不变X上升沿0不变上升沿00不变1下降沿0不变XX1Q0～Q4=0CD4518 CD4520时序图极限参数：DC Supply V oltage Range, (VDD)-0.5V to +20V(V oltage Referenced to VSS Terminals)Input V oltage Range, All Inputs输入电压范围，所有投入-0.5V to VDD +0.5V DC Input Current, Any One Input直流输入电流±10mAOperating Temperature Range 工作温度范围-55℃to +125℃Storage Temperature Range (TSTG)储存温度范围-65℃to +150℃典型应用电路：串联4个计数器上升沿边缘触发CD4020,CD4012,CD4071组成的同步串联二进制计数器负边缘触发器电路同步串联二进制计数器负边缘触发器电路。

74HC4538中文资料

74HC4538中文资料

lengthening). (3) Negative edge triggering. (4) Reset (pulse shortening). (5) Vref1 and Vref2 are internal reference voltages. (6) T = 0.7 × Rt × Ct (see also Fig.5).
GENERAL DESCRIPTION
The 74HC/HCT4538 are high-speed Si-gate CMOS devices and are pin compatible with “4538” of the “4000B” series. They are specified in compliance with JEDEC standard no. 7A.
Product specification
74HC/HCT4538
Fig.1 Pin configuration.
Fig.2 Logic symbol.
Fig.3 IEC logic symbol.
September 1993
3
元器件交易网
Philips Semiconductors
Philips Semiconductors
Dual retriggerable precision monostable multivibrator
Product specification
74HC/HCT4538
FEATURES
• Separate reset inputs • Triggering from leading or trailing edge • Output capability: standard • ICC category: MSI • Power-on reset on-chip
CD74HC4511MTE4中文资料

CD74HC4511MTE4中文资料

PACKAGING INFORMATIONOrderable Device Status(1)PackageType PackageDrawingPins PackageQtyEco Plan(2)Lead/Ball Finish MSL Peak Temp(3)5962-8773301EA ACTIVE CDIP J161TBD A42SNPB N/A for Pkg Type CD54HC4511F3A ACTIVE CDIP J161TBD A42SNPB N/A for Pkg Type CD74HC4511E ACTIVE PDIP N1625Pb-Free(RoHS)CU NIPDAU N/A for Pkg TypeCD74HC4511EE4ACTIVE PDIP N1625Pb-Free(RoHS)CU NIPDAU N/A for Pkg TypeCD74HC4511M ACTIVE SOIC D1640Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMCD74HC4511M96ACTIVE SOIC D162500Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMCD74HC4511M96E4ACTIVE SOIC D162500Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMCD74HC4511ME4ACTIVE SOIC D1640Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMCD74HC4511MT ACTIVE SOIC D16250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMCD74HC4511MTE4ACTIVE SOIC D16250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMCD74HC4511PWR ACTIVE TSSOP PW162000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMCD74HC4511PWRE4ACTIVE TSSOP PW162000Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMCD74HC4511PWT ACTIVE TSSOP PW16250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMCD74HC4511PWTE4ACTIVE TSSOP PW16250Green(RoHS&no Sb/Br)CU NIPDAU Level-1-260C-UNLIMCD74HCT4511E ACTIVE PDIP N1625Pb-Free(RoHS)CU NIPDAU N/A for Pkg TypeCD74HCT4511EE4ACTIVE PDIP N1625Pb-Free(RoHS)CU NIPDAU N/A for Pkg Type(1)The marketing status values are defined as follows:ACTIVE:Product device recommended for new designs.LIFEBUY:TI has announced that the device will be discontinued,and a lifetime-buy period is in effect.NRND:Not recommended for new designs.Device is in production to support existing customers,but TI does not recommend using this part in a new design.PREVIEW:Device has been announced but is not in production.Samples may or may not be available.OBSOLETE:TI has discontinued the production of the device.(2)Eco Plan-The planned eco-friendly classification:Pb-Free(RoHS),Pb-Free(RoHS Exempt),or Green(RoHS&no Sb/Br)-please check /productcontent for the latest availability information and additional product content details.TBD:The Pb-Free/Green conversion plan has not been defined.Pb-Free(RoHS):TI's terms"Lead-Free"or"Pb-Free"mean semiconductor products that are compatible with the current RoHS requirements for all6substances,including the requirement that lead not exceed0.1%by weight in homogeneous materials.Where designed to be soldered at high temperatures,TI Pb-Free products are suitable for use in specified lead-free processes.Pb-Free(RoHS Exempt):This component has a RoHS exemption for either1)lead-based flip-chip solder bumps used between the die and package,or2)lead-based die adhesive used between the die and leadframe.The component is otherwise considered Pb-Free(RoHS compatible)as defined above.Green(RoHS&no Sb/Br):TI defines"Green"to mean Pb-Free(RoHS compatible),and free of Bromine(Br)and Antimony(Sb)based flame retardants(Br or Sb do not exceed0.1%by weight in homogeneous material)(3)MSL,Peak Temp.--The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications,and peak solder temperature.6-Dec-2006Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided.TI bases its knowledge and belief on information provided by third parties,and makes no representation or warranty as to the accuracy of such information.Efforts are underway to better integrate information from third parties.TI has taken and continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.TI and TI suppliers consider certain information to be proprietary,and thus CAS numbers and other limited information may not be available for release.In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s)at issue in this document sold by TI to Customer on an annualbasis.6-Dec-2006IMPORTANT NOTICETexas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment.TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard warranty. T esting and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed.TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and applications using TI components. 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