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CD74ACT161ME4 PDF预览

CD74ACT161ME4

更新时间： 2024-09-15 05:18:07
品牌 Logo 应用领域
德州仪器 - TI 计数器
页数 文件大小 规格书
14页 371K
描述
4-BIT SYNCHRONOUS BINARY COUNTERS

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CD74ACT161ME4 数据手册

 浏览型号CD74ACT161ME4的Datasheet PDF文件第2页浏览型号CD74ACT161ME4的Datasheet PDF文件第3页浏览型号CD74ACT161ME4的Datasheet PDF文件第4页浏览型号CD74ACT161ME4的Datasheet PDF文件第5页浏览型号CD74ACT161ME4的Datasheet PDF文件第6页浏览型号CD74ACT161ME4的Datasheet PDF文件第7页 
CD54ACT161, CD74ACT161  
4-BIT SYNCHRONOUS BINARY COUNTERS  
SCHS298B – APRIL 2000 – REVISED MARCH 2003  
CD54ACT161 . . . F PACKAGE  
CD74ACT161 . . . E OR M PACKAGE  
(TOP VIEW)  
Inputs Are TTL-Voltage Compatible  
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  
Q
A
SCR-Latchup-Resistant CMOS Process and  
Circuit Design  
B
Q
B
C
Q
C
Exceeds 2-kV ESD Protection per  
MIL-STD-883, Method 3015  
D
Q
D
ENP  
GND  
ENT  
LOAD  
description/ordering information  
The ’ACT161 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 so instructed  
by the count-enable (ENP, ENT) inputs and internal gating. This mode of operation eliminates the output  
counting spikes that normally are associated with synchronous (ripple-clock) counters. A buffered clock (CLK)  
input triggers the four flip-flops on the rising (positive-going) edge of the clock waveform.  
These devices 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 asynchronous. A low level at the clear (CLR) input sets all four of the flip-flop outputs low,  
regardless of the levels of the CLK, load (LOAD), or enable inputs.  
The carry look-ahead circuitry provides for cascading counters for n-bit synchronous applications without  
additional gating. Instrumental in accomplishing this function are ENP, ENT, and a ripple-carry output (RCO).  
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.  
The counters 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.  
ORDERING INFORMATION  
ORDERABLE  
PART NUMBER  
TOP-SIDE  
MARKING  
†
PACKAGE  
T
A
PDIP – E  
Tube  
Tube  
CD74ACT161E  
CD74ACT161M  
CD74ACT161M96  
CD54ACT161F3A  
CD74ACT161E  
–55°C to 125°C  
SOIC – M  
CDIP – F  
ACT161M  
Tape and reel  
Tube  
CD54ACT161F3A  
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 2003, Texas Instruments Incorporated  
On products compliant to MIL-PRF-38535, all parameters are tested  
unless otherwise noted. On all other products, production  
processing does not necessarily include testing of all parameters.  
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...14

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CD74ACT161ME4 替代型号

型号 品牌 替代类型 描述 数据表
CD74ACT161MG4 TI

完全替代

 ACT SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP BINARY COUNTER, PDSO16, GREEN, PLASTIC, M
CD74ACT161M96G4 TI

完全替代

 ACT SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP BINARY COUNTER, PDSO16, GREEN, PLASTIC, M
CD74ACT161M96E4 TI

完全替代

 4-BIT SYNCHRONOUS BINARY COUNTERS

与CD74ACT161ME4相关器件

型号 品牌 获取价格 描述 数据表
CD74ACT161MG4 ROCHESTER

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 		Binary Counter, ACT Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, CMO
CD74ACT161MG4 TI

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 		ACT SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP BINARY COUNTER, PDSO16, GREEN, PLASTIC, M
CD74ACT163 TI

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 		CD54ACT161 CD74ACT161
CD74ACT163E TI

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 		CD54ACT161 CD74ACT161
CD74ACT163E ROCHESTER

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 		Binary Counter, ACT Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, CMO
CD74ACT163E RENESAS

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 		BINARY COUNTER
CD74ACT163EE4 TI

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 		4-BIT SYNCHRONOUS BINARY COUNTERS
CD74ACT163EN ETC

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 		Logic IC
CD74ACT163EX RENESAS

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 		Binary Counter, ACT Series, Synchronous, Positive Edge Triggered, 4-Bit, Up Direction, CMO
CD74ACT163F ETC

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 		Logic IC

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