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CD74AC163

更新时间： 2024-02-17 13:01:38
品牌 Logo 应用领域
德州仪器 - TI 计数器
页数 文件大小 规格书
11页 156K
描述
4-BIT SYNCHRONOUS BINARY COUNTERS

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中文翻译

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CD74AC163 技术参数

是否Rohs认证： 不符合生命周期：Obsolete
包装说明：SOP, SOP16,.25Reach Compliance Code：unknown
风险等级：5.89计数方向：UP
JESD-30 代码：R-PDSO-G16JESD-609代码：e0
负载电容（CL）：50 pF负载/预设输入：YES
逻辑集成电路类型：BINARY COUNTER最大频率@ Nom-Sup：64000000 Hz
最大I（ol）：0.012 A工作模式：SYNCHRONOUS
功能数量：1端子数量：16
最高工作温度：125 °C最低工作温度：-55 °C
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装等效代码：SOP16,.25封装形状：RECTANGULAR
封装形式：SMALL OUTLINE电源：3.3/5 V
子类别：Counters表面贴装：YES
技术：CMOS温度等级：MILITARY
端子面层：Tin/Lead (Sn/Pb)端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
Base Number Matches：1

CD74AC163 数据手册

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CD54AC163, CD74AC163  
4-BIT SYNCHRONOUS BINARY COUNTERS  
SCHS299 – APRIL 2000  
CD54AC163 . . . F PACKAGE  
CD74AC163 . . . E OR M PACKAGE  
(TOP VIEW)  
Internal Look-Ahead for Fast Counting  
Carry Output for n-Bit Cascading  
Synchronous Counting  
CLR  
CLK  
A
V
CC  
RCO  
1
2
3
4
5
6
7
8
16  
15  
14  
13  
12  
11  
10  
9
Synchronously Programmable  
Package Options Include Plastic  
Small-Outline (M), Standard Plastic (E) and  
Ceramic (F) DIPs  
Q
A
B
Q
B
C
Q
C
D
Q
D
description  
ENP  
GND  
ENT  
LOAD  
The CD54AC163 and CD74AC163 devices are  
4-bit binary counters. These synchronous,  
presettable counters feature an internal carry  
look-ahead for application in high-speed counting  
designs. Synchronous operation is provided by having all flip-flops clocked simultaneously so that the outputs  
change coincident with each other when instructed by the count-enable (ENP, ENT) inputs and internal gating.  
This mode of operation eliminates the output counting spikes normally associated with synchronous  
(ripple-clock)counters. Abufferedclock(CLK)inputtriggersthefourflip-flopsontherising(positive-going)edge  
of the clock waveform.  
The counters are fully programmable; that is, they can be preset to any number between 0 and 9 or 15.  
Presetting is synchronous; therefore, setting up a low level at the load input disables the counter and causes  
the outputs to agree with the setup data after the next clock pulse, regardless of the levels of the enable inputs.  
The clear function is synchronous. A low level at the clear (CLR) input sets all four of the flip-flop outputs low  
after the next low-to-high transition of CLK, regardless of the levels of the enable inputs. This synchronous clear  
allows the count length to be modified easily by decoding the Q outputs for the maximum count desired. The  
active-low output of the gate used for decoding is connected to CLR to synchronously clear the counter to 0000  
(LLLL).  
The carry look-ahead circuitry provides for cascading counters for n-bit synchronous applications without  
additional gating. ENP, ENT, and a ripple-carry output (RCO) are instrumental in accomplishing this function.  
Both ENP and ENT must be high to count, and ENT is fed forward to enable RCO. Enabling RCO produces a  
high-level pulse while the count is maximum (9 or 15 with Q high). This high-level overflow ripple-carry pulse  
A
can be used to enable successive cascaded stages. Transitions at ENP or ENT are allowed, regardless of the  
level of CLK.  
These devices feature a fully independent clock circuit. Changes at control inputs (ENP, ENT, or LOAD) that  
modify the operating mode have no effect on the contents of the counter until clocking occurs. The function of  
the counter (whether enabled, disabled, loading, or counting) is dictated solely by the conditions meeting the  
stable setup and hold times.  
The CD54AC163 is characterized for operation over the full military temperature range of –55°C to 125°C.  
The CD74AC163 is characterized for operation from –40°C to 85°C.  
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of  
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.  
Copyright 2000, Texas Instruments Incorporated  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of Texas Instruments  
standard warranty. Production processing does not necessarily include  
testing of all parameters.  
1
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265  
1234567...11

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CD74AC163 替代型号

型号 品牌 替代类型 描述 数据表
CD54AC163 TI

功能相似

 4-BIT SYNCHRONOUS BINARY COUNTERS

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CD74AC163E TI

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 		4-BIT SYNCHRONOUS BINARY COUNTERS
CD74AC163E RENESAS

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 		IC,COUNTER,UP,4-BIT BINARY,AC-CMOS,DIP,16PIN,PLASTIC
CD74AC163E ROCHESTER

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 		Binary Counter, AC Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, CMOS
CD74AC163EE4 TI

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 		Synchronous Presettable Binary Counters with Synchronous Reset 16-PDIP -55 to 125
CD74AC163EN ETC

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 		Logic IC
CD74AC163EX GE

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 		Binary Counter, AC Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, CMOS
CD74AC163F ETC

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 		Logic IC
CD74AC163M TI

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 		4-BIT SYNCHRONOUS BINARY COUNTERS
CD74AC163M RENESAS

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 		IC,COUNTER,UP,4-BIT BINARY,AC-CMOS,SOP,16PIN,PLASTIC
CD74AC163M ROCHESTER

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 		Binary Counter, AC Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, CMOS

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