數(shù)字分頻器(SN7490、SN7442、SN74150)

關(guān)鍵詞： SN74150 , SN7442 , SN7490 , 數(shù)字分頻器

如圖所示為數(shù)字分頻電路。該電路由3塊集成電路構(gòu)成，分頻系數(shù)可以從1～9變化。計數(shù)器SN7490輸出的二-十進制數(shù)送至譯碼器SN7442，譯碼器輸出為十進制數(shù)。分頻系數(shù)由數(shù)據(jù)選擇器SN74150確定。數(shù)據(jù)選擇器的輸出反饋到SN7490的復(fù)位輸入端，即每次計數(shù)周期結(jié)束時輸出一個脈沖，該脈沖同時使計數(shù)器SN7490復(fù)位。輸出脈沖寬度為60ns，它由電路的傳輸延遲時間決定。用這種非頻器級聯(lián)，可以構(gòu)成更大分頻系數(shù)的分頻器。

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SN3135 運用方案

SN3135 運用方案求大俠發(fā)個資料

2017-02-16 11:29:17

SN6501，SN6505芯片推挽變壓器驅(qū)動器單價太高，國產(chǎn)替換？

HI，SN6501，SN6505 SOT23-5芯片是推挽變壓器驅(qū)動器，是美國TI公司，不含稅單價2.5元左右，單價太高，哪位大俠知道有沒有國產(chǎn)的芯片可以替換它，封裝最好是SOT23-6或SOT23-5，批量成本單價控制在1.0元以內(nèi)。有知道請告之，謝謝

2019-05-30 14:10:44

SN65HVD10QDREP和QDRG4的區(qū)別是什么？

SN65HVD10QDREP和QDRG4的區(qū)別

2020-08-26 08:08:26

SN74AHCT245DW芯片問題

SN74AHCT245DW芯片問題如題，這款芯片我查資料是說帶三太輸出的8位總線收發(fā)器在電路圖中看到的就是8路，一對一的輸入輸出但是不理解是什么作用？希望指點

2017-12-23 10:48:10

SN74LBC174外圍電路設(shè)計

哪位高手指導(dǎo)下SN74LBC174外圍電路怎么設(shè)計的？

2013-06-19 15:28:58

SN8P2722是用什么語言編寫?。?/a>

SN8P2722是用什么語言編寫??！使用C語言還是匯編語言！！

2013-06-13 21:07:56

ATmega系列什么型號能替換SN8P2604A？

ATmega系列什么型號能替換SN8P2604A？要求同為SOP28或DIP28封裝？多謝！

2012-10-08 16:28:47

CAN收發(fā)器SN65HVD251 輸出端高組態(tài)的疑問？

CAN收發(fā)器SN65HVD251 總線隱性狀態(tài)（高組態(tài)）時，為什么輸出是2.5V。從Datasheet上看，當(dāng)SN65HVD251處于隱性狀態(tài)時，總線端處于高阻狀態(tài)，此時用示波器量取高阻狀態(tài)的電平

2013-01-03 11:40:42

JST原廠現(xiàn)貨庫存BH02B-XAEK(LF)(SN) BH02B-XARK(LF)(SN) BH02B-XASK(LF)(SN)

`深圳市凌創(chuàng)輝電子有限公司2006年成立，從事主流進口品牌連接器、接插接、端子、膠殼現(xiàn)貨/期貨的代理與分銷業(yè)務(wù)；具有完善的原廠供應(yīng)鏈體系，我司授權(quán)經(jīng)銷molex連接器，TE/TYCO/AMP(安普

2020-03-23 16:19:45

proteus industries 08004SN1

`代理美國 Proteus Industries Inc 流量傳感器電話：0755-26998458，135.3421.8343吳經(jīng)理工作Q.Q：1662543848地址：深圳市南山區(qū)南海大道

2019-11-26 11:54:54

光纖傳輸中SN75451替代芯片

使用SN75451設(shè)計的光纖傳輸方案，現(xiàn)在遇到的問題是SN75451手冊上標(biāo)明運行溫度是0~70℃，我們設(shè)備要求在-20℃下工作，這樣看就不滿足要求了。但是看其他廠家用的也是75451，這樣有什么問題嗎？或者說有什么替代方案或替代芯片？感謝大神了！

2018-03-14 08:57:50

光纖轉(zhuǎn)換模塊中使用SN75451

我在做塑料光纖接口的時候，按照手冊中的原理圖接SN75451，但是照下圖中接SN75451時候，輸入接2腳，1腳8腳接電源，4腳接地，3腳卻怎樣都沒有輸出，求教各位大神，有沒有什么解決辦法啊。。萬謝

2016-10-17 20:14:55

在RN4870上使用SN命令時獲得Err

當(dāng)執(zhí)行“SN，和L.字母數(shù)字& gt”，例如“SN，QWERTY”或“SN，12345”時，我得到了“ERR”響應(yīng)，然后是“CMD & Gt”。具有諷刺意味的是，這個名字實際上是被

2018-10-30 15:17:39

帶SN切換的形式

帶SN切換（4G和5G同時切換）帶SN切換（4G切換，5G不變）SN Change流程（4G不變、5G變更）

2021-03-01 10:50:06

有沒有比SN74LVCU04A更快速的反相器？

有比SN74LVCU04A更快速的反相器嗎？

2018-11-12 09:38:25

求HED10W07SN手冊資料

請教各位前輩，有沒有關(guān)于SOC芯片HED10W07SN的手冊啊

2014-03-29 10:38:10

求助帖?。?！光源驅(qū)動芯片SN3135已經(jīng)停產(chǎn)，誰有可替代的芯片嗎？

`因SN3135芯片停產(chǎn)，影響我司產(chǎn)品進度，現(xiàn)尋能替代SN3135芯片的芯片幾款，求各位發(fā)燒友推薦幾款功能相似的芯片。`

2017-12-04 16:03:46

求講解SN75372

請問誰能夠講解一下SN75372的使用方法嗎？

2012-03-27 18:21:40

用sn65hvd230做收發(fā)器無法進行工作是什么原因造成的？

我的系統(tǒng)里有兩個can節(jié)點，分別是5v單片機用tja1050和arm7用3.3V供電sn65hvd230做收發(fā)器，但連到總線中后，tja1050能正常工作，sn65hvd230就不能收發(fā)了，是因為tja1050和sn65hvd230供電電壓不同造成的嗎？如何改進?。?/div>

2023-03-06 11:55:24

請教各路大神，SN3938的頻率是多少呢？

請教各路大神，SN3938的頻率是多少呢？本人是個菜鳥，尋求各路大神幫助，謝謝！?。?/div>

2018-09-17 17:02:46

請問RK3288 MAC SN如何添加一個新的ID？

2022-03-03 06:28:04

sn7404 pdf datasheet

these devices contain six independent inverters.the sn5404,sn54Ls04,and sn54S04 are charecterized

2008-08-04 23:24:57

SN7401/SN5401/SN74LS01 pdf dat

SN7401 pdf datasheet SN5401/SN74LS01

2008-08-04 23:28:09

SN7402/SN54LS02/SN74LS02 pdf d

SN7402/SN54LS02/SN74LS02 pdf datasheet

2008-08-04 23:29:33

SN54F04/SN74F04 pdf,SN54F04/SN

The SN54F04 is characterized for operation overthe full military temperature range of –55°C to125

2008-09-06 21:25:56

SN54ALS04B,SN54AS04,SN74ALS04B

The SN54ALS04B and SN54AS04 are characterized for operation over the full military temperature range of -55°C to 125°C. The SN74ALS

2010-07-11 15:09:47

SN54ALVTH16244, SN74ALVTH16244

SN54ALVTH1

2010-07-16 18:56:46

SN54173, SN54LS173A, SN74173,

SN54173, S

2010-07-27 15:35:33

SN54174,SN54175,SN54LS174,SN54

SN54174,SN

2010-07-29 16:34:26

SN54174,SN54175,SN54LS174,SN54

SN54174,SN

2010-07-29 16:41:30

SN54107,SN54LS107A,SN74107,SN7

SN54107,SN

2010-08-02 17:11:01

SN5473,SN54LS73A,SN7473,SN74LS

SN5473,SN5

2010-08-02 17:25:15

SN54LS11,SN54S11,SN74LS11,SN74

These devices contain three independent 3-input AND gates. The SN54LS11 and SN

2010-08-04 19:36:47

SN5408,SN54LS08,SN54S08,SN7408

SN5408,SN5

2010-08-04 20:15:10

SN5451,SN54LS51,SN54S51,SN7451

SN5451,SN5

2010-08-05 15:07:31

SN54136,SN54LS136,SN74136,SN74

SN54136,SN54LS136,SN74136,SN74LS136英文資料

2010-08-05 16:36:46

SN54F38,SN74F38,pdf(Quadruple

SN54F38,SN

2010-08-06 15:22:28

SN5410,SN54LS10,SN54S10,SN7410

These devices contain three independent 3-input NAND gates. The SN5410, SN54LS10, and SN

2010-08-06 18:29:42

SN5420,SN54LS20,SN54S20,SN7420

These devices contain two independent 4-input NAND gates. The SN5420, SN54LS20, and SN

2010-08-06 18:36:47

SN5430,SN54LS30,SN54S30,SN7430

These devices contain a single 8-input NAND gate. The SN5430, SN54LS30, and SN

2010-08-06 18:43:37

SN5437,SN54LS37,SN54S37,SN7437

These devices contain four independent 2-input NAND buffer gates. The SN5437, SN

2010-08-06 18:48:01

SN5423,SN5425,SN7423,SN7425,pd

function: The SN5423 and the SN5425 are characterized for operation over the full military temperature range of -55°C to 125°C. The SN742

2010-08-06 22:57:02

SN5427,SN54LS27,SN7427,SN74LS2

These devices contain three independent 3-input NOR gates. The SN5427 and SN

2010-08-07 00:13:42

SN5402,SN54LS02,SN54S02,SN7402

SN5402,SN5

2010-08-08 19:24:32

SN5432,SN54LS32,SN54S32,SN7432

These devices contain four independent 2-input OR gates. The SN5432, SN54LS32 and SN

2010-08-08 20:28:27

SN54283,SN54LS283,SN54S283,SN7

SN54283,SN

2010-08-09 18:24:51

SN54160 THRU SN54163,SN54LS160

SN54160 TH

2010-08-10 15:58:14

SN54190,SN54191,SN54LS190,SN54

SN54190,SN

2010-08-10 16:04:18

SN54192,SN54193,SN54LS192,SN54

SN54192,SN

2010-08-10 16:07:40

SN54290,SN54293,SN54LS290,SN54

are electrically and functionally identical to the SN5490A/SN7490A, SN54LS90/SN74LS90, SN5493A/SN7493A, and SN54LS93/SN74LS93, respectively. Onl

2010-08-10 16:10:06

SN54390,SN54LS390,SN54393,SN54

SN54390,SN

2010-08-10 16:14:36

SN54147,SN54148,SN54LS147,SN54

SN54147,SN

2010-08-10 17:40:14

SN54150,SN54151A,SN54LS151,SN5

SN54150,SN

2010-08-11 15:34:37

SN54ALS137A,SN74ALS173A,SN74AS

The SN54ALS137A, SN74ALS137A, and SN74AS137 are 3-line to 8-line decoders/demultiplexers

2010-08-12 16:16:09

SN54246,SN54247,SN54LS247,SN54

SN54246,SN

2010-08-12 17:45:28

SN54ALS520,SN74ALS518,SN74ALS5

These identity comparators perform comparisons on two 8-bit binary or BCD words. The SN

2010-08-12 18:52:09

SN54ALS137A,SN74ALS137A,SN74AS

The SN54ALS137A, SN74ALS137A, and SN74AS137 are 3-line to 8-line decoders/demultiplexers

2010-08-16 17:11:00

SN74V215,SN74V225,SN74V235,SN7

The SN74V215, SN74V225, SN74V235, and SN74V245 are very high-speed, low-power CMOS clocked first-in

2010-08-19 17:13:29

SN74V263,SN74V273,SN74V283,SN7

The SN74V263, SN74V273, SN74V283, and SN74V293 are exceptionally deep, high-speed, CMOS first-in

2010-08-19 17:19:13

SN74V3640,SN74V3650,SN74V3660,

The SN74V3640, SN74V3650, SN74V3660, SN74V3670, SN74V3680, and SN74V3690 are exceptionally deep

2010-08-19 17:22:41

SN54221,SN54LS221,SN74221,SN74

SN54221,SN

2010-08-20 17:26:10

SN54122,SN54123,SN54130,SN54LS

SN54122,SN

2010-08-20 17:35:30

SN54LS624 THRU SN54LS629,SN74L

: SN54LS124, SN54LS324 thru SN54LS327, SN74LS124, and SN74LS324 thru SN74LS327. These new devices feature improved voltage-to-frequency linearit

2010-08-20 18:17:20

SN65HVD230,SN65HVD231,SN65HVD2

The SN65HVD230, SN65HVD231, and SN65HVD232 controller area network (CAN) transceivers are designed

2010-08-23 12:12:05

SN65HVD233,SN65HVD234,SN65HVD2

The SN65HVD233, SN65HVD234, and SN65HVD235 are used in applications employing the controller area

2010-08-23 12:28:53

SN65220,SN65240,SN75240,pdf(US

The SN65220 is a single transient voltage suppressor and the SN65240 and SN75240 are dual transient

2010-08-24 18:14:59

SN65LVDS179,SN65LVDS180,SN65LV

The SN65LVDS179, SN65LVDS180, SN65LVDS050, and SN65LVDS051 are differential line drivers

2010-08-26 16:50:16

SN65LVDS179-Q1,SN65LVDS180-Q1,

The SN65LVDS179, SN65LVDS180, SN65LVDS050, and SN65LVDS051 are differential line drivers

2010-08-26 17:02:08

SN65LVDS1,SN65LVDS2,SN65LVDT2,

The SN65LVDS1, SN65LVDS2, and SN65LVDT2 are single, low-voltage, differential line drivers

2010-08-26 17:10:40

SN55LVDS31,SN65LVDS31,SN65LVDS

The SN55LVDS31, SN65LVDS31, SN65LVDS3487, and SN65LVDS9638 are differential line drivers

2010-08-26 17:24:31

SN55LVDS32,SN65LVDS32,SN65LVDS

The SN55LVDS32, SN65LVDS32, SN65LVDS3486, and SN65LVDS9637 are differential line receivers

2010-08-26 17:26:18

SN65LVDS348,SN65LVDT348,SN65LV

The SN65LVDS348, SN65LVDT348, SN65LVDS352, and SN65LVDT352 are high-speed, quadruple differential

2010-08-26 17:35:07

SN65LVDM179,SN65LVDM180,SN65LV

The SN65LVDM179, SN65LVDM180, SN65LVDM050, and SN65LVDM051 are differential line drivers

2010-08-26 18:19:14

SN55110A,SN75110A,SN75112,pdf(

The SN55110A, SN75110A, and SN75112 dual line drivers have improved output current regulation

2010-08-28 22:43:07

SN55113,SN75113,pdf(Dual Diffe

The SN55113 and SN75113 dual differential line drivers with 3-state outputs are designed to provide

2010-08-28 22:45:15

SN55451B,SN55452B,SN55453B,SN5

The SN55451B through SN55454B and SN75451B through SN75454B are dual peripheral drivers designed

2010-08-30 11:01:24

SN55461 THRU SN55463,SN75461 T

These dual peripheral drivers are functionally interchangeable with SN55451B through SN

2010-08-30 11:12:00

SN75477,SN75478,pdf(Dual Perip

The SN75476 through SN75478 are dual peripheral drivers designed for use in systems that require

2010-08-30 11:22:18

SN65C1167,SN75C1167,SN65C1168,

The SN65C1167, SN75C1167, SN65C1168, and SN75C1168 dual drivers and receivers are integrated

2010-09-03 01:53:28

SN55173,SN65173,SN75173,pdf(Qu

The SN55173, SN65173, and SN75173 are monolithic quadruple differential line receivers with 3-state

2010-09-03 03:47:14

SN65HVD05,SN65HVD06,SN75HVD05,

The SN65HVD05, SN75HVD05, SN65HVD06, SN75HVD06, SN65HVD07, and SN75HVD07 combine a 3-state

2010-09-04 19:40:43

SN65HVD10,SN65HVD10Q,SN75HVD10

The SN65HVD10, SN75HVD10, SN65HVD11, SN75HVD11, SN65HVD12, and SN75HVD12 combine a 3-state

2010-09-04 19:59:59

SN55LBC176,SN65LBC176,SN65LBC1

The SN55LBC176, SN65LBC176, SN65LBC176Q, and SN75LBC176 differential bus transceivers

2010-09-04 21:41:45

SN75LBC179,SN65LBC179,SN65LBC1

The SN65LBC179, SN65LBC179Q, and SN75LBC179 differential driver and receiver pairs are monolithic

2010-09-04 22:03:01

SN55LBC176,SN65LBC176,SN65LBC1

SN55LBC176

2010-09-04 23:00:29

SN5446A, SN5447A, SN5448, SN54

SN5446A, S

2010-11-03 00:38:27

數(shù)字分頻器

數(shù)字分頻器

2009-04-11 10:26:21

3033

SN7474N構(gòu)成簡單的分頻電路

SN7474N構(gòu)成簡單的

2009-06-12 14:27:56

4536

SN74174_英文數(shù)據(jù)手冊

SN74174SN74174SN74174SN74174SN74174SN74174SN74174

2015-12-28 15:20:59

sn6505a和sn6505b評價模塊

This document describes the SN6505A and SN6505B evaluation module (EVM). It allows designers

2016-11-16 14:10:11

SN65HVD1782-Q1 SN65HVD1782-Q1

電子發(fā)燒友網(wǎng)為你提供TI(ti)SN65HVD1782-Q1相關(guān)產(chǎn)品參數(shù)、數(shù)據(jù)手冊，更有SN65HVD1782-Q1的引腳圖、接線圖、封裝手冊、中文資料、英文資料，SN65HVD1782-Q1真值表，SN65HVD1782-Q1管腳等資料，希望可以幫助到廣大的電子工程師們。

2018-10-16 11:16:58

SN65HVD1780-Q1 SN65HVD1780-Q1

電子發(fā)燒友網(wǎng)為你提供TI(ti)SN65HVD1780-Q1相關(guān)產(chǎn)品參數(shù)、數(shù)據(jù)手冊，更有SN65HVD1780-Q1的引腳圖、接線圖、封裝手冊、中文資料、英文資料，SN65HVD1780-Q1真值表，SN65HVD1780-Q1管腳等資料，希望可以幫助到廣大的電子工程師們。

2018-10-16 11:16:58

用SN75454B構(gòu)成的四路報警器,SN75454B application

用SN75454B構(gòu)成的四路報警器,SN75454B application 關(guān)鍵字：SN75454B，報警電路如圖所示電路由外部

2018-09-20 18:30:28

739

SN74193構(gòu)成的具有奇次和偶次分頻的分頻器

關(guān)鍵詞：SN74193 , 分頻器 如圖所示為具有奇次和偶次分頻的分頻電路。該電路可進行2～32(包括奇次和偶次)分頻。同步計數(shù)器SN74193的計數(shù)輸入是由多路調(diào)制器SN74153的輸出1Y供給

2018-10-03 18:34:01

589

由TTL十進制計數(shù)器構(gòu)成的分頻器

頻率為1Hz的脈沖輸出；又如，時標(biāo)發(fā)生器需對晶體振蕩器的輸出頻率進行分頻。如果分頻系數(shù)N≤10，則只需用一塊TTL二-十進制計數(shù)器SN7490即可實現(xiàn)。通常的TTL電路中的分頻是用二進制計數(shù)器，使每N個輸入脈沖輸出一個脈沖。當(dāng)?shù)贜個脈沖輸入時，計數(shù)器復(fù)位，計數(shù)器的最高有

2018-10-03 18:46:02

2984