 |
数据搜索系统，热门电子元器件搜索 |
|
|
数据搜索系统，热门电子元器件搜索 |
|
HCF4047M013TR 数据表(PDF) 7 Page - STMicroelectronics |
|
||||||||||||||||||||||||||||||
HCF4047M013TR 数据表(HTML) 7 Page - STMicroelectronics |
|
|
7 / 12 page  HCF4047B 7/12 coupling "Q" to an external "N" counter and resetting the counter with the trigger pulse. The counter output pulse is fed back to the ASTABLE input and has a duration equal to N times the period of the multivibrator. A high level on the EXTERNAL RESET input assures no output pulse during an "ON" power condition. This input can also be activated to terminate the output pulse at any time. In the monostable mode, a high-level or power-on reset pulse, must be applied to the EXTERNAL RESET whenever VDD is applied. 2 - ASTABLE MODE The following analysis presents worst-case variations from unit-to-unit as a function of transfer-voltage (VTR) shift (33% - 67% VDD) for free-running (astable) operation. ASTABLE MODE WAVEFORMS Typ : VTR = 0.5 VDD tA = 4.40 RC Min : VTR = 0.33 VDD tA = 4.62 RC Max : VTR = 0.67 VDD tA = 4.62 RC thus if tA = 4.40 RC is used, the maximum variation will be (+ 5.0%, -0.0%) In addition to variations from unit-to-unit, the astable period may vary as a function of frequency with respect to VDD and temperature. 3 - MONOSTABLE MODE The following analysis presents worst-case variations from unit-to-unit as a function of transfer-voltage (VTR) shift (33% - 67% VDD) for one-shot (monostable) operation. MONOSTABLE WAVEFORMS VTR t1 = -RC In ————— VDD + VTR VDD - VTR t2 = -RC In ————— 2VDD - VTR (VTR)(VDD - VTR) t3 = 2(t1+t2)= -2RC In ——————————— (VDD + VTR)(2VDD - VTR) VTR t1 = -RC In ——— 2VDD VDD - VTR t2 = -RC In ————— 2VDD - VTR (VTR)(VDD - VTR) tM = (t1+t2)= -RC In ————————— (2VDD - VTR)(2VDD) |
类似零件编号 - HCF4047M013TR |
|
类似说明 - HCF4047M013TR |
|
|
|
链接网址 |
| 隐私政策 |
| ALLDATASHEETCN.COM |
| ALLDATASHEET是否为您带来帮助? [ DONATE ] |
关于 Alldatasheet | 广告服务 | 联系我们 | 隐私政策 | 链接交换 | 制造商名单 All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
Chinese ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
