công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
|
TC74HC123AF bảng dữ liệu(PDF) 3 Page - Toshiba Semiconductor |
|
TC74HC123AF bảng dữ liệu(HTML) 3 Page - Toshiba Semiconductor |
3 / 13 page TC74HC123AP/AF 2012-02-29 3 Block Diagram (Note 1)(Note 2) Note 1: Cx, Rx, Dx are external capacitor, resistor, and diode, respectively. Note 2: External clamping diode, Dx; The external capacitor is charged to VCC level in the wait state, i.e. when no trigger is applied. If the supply voltage is turned off, Cx is discharges mainly through the internal (parasitic) diode. If Cx is sufficiently large and VCC drops rapidly, there will be some possibility of damaging the IC through in rush current or latch-up. If the capacitance of the supply voltage filter is large enough and VCC drops slowly, the in rush current is automatically limited and damage to the IC is avoided. The maximum value of forward current through the parasitic diode is ±20 mA. In the case of a large Cx, the limit of fall time of the supply voltage is determined as follows: tf ≥ (VCC − 0.7) Cx/20 mA (tf is the time between the supply voltage turn off and the supply voltage reaching 0.4 VCC.) In the event a system does not satisfy the above condition, an external clamping diode (Dx) is needed to protect the IC from in rush current. Truth Table Inputs Outputs A B CLR Q Q Function H H Output Enable X L H L H Inhibit H X H L H Inhibit L H Output Enable L H Output Enable X X L L H Inhibit X: Don’t care |
Số phần tương tự - TC74HC123AF |
|
Mô tả tương tự - TC74HC123AF |
|
|
Link URL |
Chính sách bảo mật |
ALLDATASHEET.VN |
Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không? [ DONATE ] |
Alldatasheet là | Quảng cáo | Liên lạc với chúng tôi | Chính sách bảo mật | Trao đổi link | Tìm kiếm theo nhà sản xuất 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 |