Datasheet > 逻辑 > 计数器> HD74LS162A

HD74LS162A

更新时间： 2024-09-21 05:35:15

品牌	Logo	应用领域
瑞萨 - RENESAS		计数器
页数	文件大小	规格书
11页	201K
描述
Synchronous Decade Counter (synchronous clear)

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

HD74LS162A 数据手册

HD74LS162A

Synchronous Decade Counter (synchronous clear)

REJ03D0446–0300

Rev.3.00

Jul.15.2005

This synchronous decade counter features 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 changes

coincident with each other when so instructed by the count-enable inputs and internal gating. This mode is operation

eliminates the output counting spikes that are normally associated with asynchronous (ripple clock) counters. A

buffered clock input triggers the four flip-flops on the rising (positive-going) edge of the clock input waveform. This

counter is fully programmable; that is, the outputs may be preset to either level. As presetting is synchronous, 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. Low-to-high transitions at the load input should be avoided

when the clock is low if the enable inputs are high at or before the transition. The clear function is asynchronous and a

low level at the clear input sets all four of the flip-flop outputs low after the next clock pulse, regardless of the levels of

the enable inputs. This synchronous clear allows the count length to be modified easily as decoding the maximum

count desired can be accomplished with one external NAND gate. The gate output is connected to the clear input to

synchronously clear the counter to LLLL. Low-to-high transitions at the clear input should be avoided when the clock

is low if the enable and load inputs are high at or before the transition. The carry look-ahead circuitry provides for

cascading counters for n-bit synchronous applications without additional getting. Instrumental in accomplishing this

function are two count-enable inputs and a ripple carry output. Both count-enable inputs (P and T) must be high to

count, and input T is fed forward to enable the ripple carry output. The ripple carry output thus enabled will produce a

high-level output pulse with a duration approximately equal to the high-level portion of the Q_Aoutput. This high-level

overflow ripple carry pulse can be used to enable successive cascaded stages. High-to-low-level transitions at the

enable P or T inputs should occur only when the clock input is high.

Features

•

Ordering Information

Package Code

(Previous Code)

Package

Abbreviation

Taping Abbreviation

(Quantity)

Part Name

Package Type

PRSP0016DH-B

(FP-16DAV)

HD74LS162AFPEL

SOP-16 pin (JEITA)

EL (2,000 pcs/reel)

Rev.3.00, Jul.15.2005, page 1 of 10

12 3 4 5 6 7...11

中文翻译

下载PDF

与HD74LS162A相关器件

型号	品牌	获取价格	描述	数据表
HD74LS162AFP	ETC	获取价格	COUNTER\|UP\|DECADE\|LS-TTL\|SOP\|16PIN\|PLASTIC
HD74LS162AFP-E	RENESAS	获取价格	LS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP DECADE COUNTER, PDSO16, FP-16DA
HD74LS162AFPEL	RENESAS	获取价格	Synchronous Decade Counter (synchronous clear)
HD74LS162AFP-EL	RENESAS	获取价格	LS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP DECADE COUNTER, PDSO16, FP-16DA
HD74LS162AP	RENESAS	获取价格	LS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP DECADE COUNTER, PDIP16, DP-16
HD74LS162ARP	RENESAS	获取价格	LS SERIES, SYN POSITIVE EDGE TRIGGERED 4-BIT UP DECADE COUNTER, PDSO16, FP-16DN
HD74LS162P	ETC	获取价格	Synchronous Up Counter
HD74LS163	ETC	获取价格	Synchronous Up Counter
HD74LS163A	RENESAS	获取价格	Synchronous 4-bit Binary Counter (direct clear)
HD74LS163A	HITACHI	获取价格	Synchronous 4-bit Binary Counters(synchronous clear)

与HD74LS162A相关文章

摩尔斯微电子在美国约书亚树国家公园测试 Wi-Fi HaLow
2024-09-18

66
贸泽上架Tallysman TW5386智能GNSS天线
2024-09-18

62
SL74HC10N：高性能三输入与非门解析
2024-09-03

134
AIC1781A 电池充电控制器深度解析
2024-09-03

131

产品中心

服务支持

精选活动

关于我们

帮助中心

HD74LS162A

HD74LS162A 数据手册

与HD74LS162A相关器件

与HD74LS162A相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

HD74LS162A

HD74LS162A 数据手册

与HD74LS162A相关器件

与HD74LS162A相关文章

您还可以找

您在本页遇到什么问题？