HEF4520BN中文资料PDF规格书
HEF4520BN规格书详情
DESCRIPTION
The HEF4520B is a dual 4-bit internally synchronous binary counter. The counter has an active HIGH clock input (CP0) and an active LOW clock input (CP1), buffered outputs from all four bit positions (O0to O3) and an active HIGH overriding asynchronous master reset input (MR).
The counter advances on either the LOW to HIGH transition of the CP0input if CP1is HIGH or the HIGH to LOW transition of the CP1 input if CP0is low. Either CP0 or CP1 may be used as the clock input to the counter and the other clock input may be used as a clock enable input. A HIGH on MR resets the counter (O0to O3= LOW) independent of CP0,CP1. Schmitt-trigger action in the clock input makes the circuit highly tolerant to slower clock rise and fall times.
供应商 | 型号 | 品牌 | 批号 | 封装 | 库存 | 备注 | 价格 |
---|---|---|---|---|---|---|---|
PHILIPS/飞利浦 |
23+ |
DIP16 |
18000 |
全新原装现货,假一赔十 |
询价 | ||
PHI |
1922+ |
DIP |
3689 |
原装进口现货库存专业工厂研究所配单供货 |
询价 | ||
PHILIPS |
1992 |
91 |
原装正品长期供货,如假包赔包换 徐小姐13714450367 |
询价 | |||
PHILIPS |
2015+ |
DIP |
19889 |
一级代理原装现货,特价热卖! |
询价 | ||
NA |
19+ |
73127 |
原厂代理渠道,每一颗芯片都可追溯原厂; |
询价 | |||
PHILIPS/飞利浦 |
DIP-16 |
265209 |
假一罚十原包原标签常备现货! |
询价 | |||
652 |
23+ |
06+ |
65480 |
询价 | |||
PHI |
22+ |
DIP16 |
32350 |
原装正品 假一罚十 公司现货 |
询价 | ||
PHI |
2020+ |
DIP |
16800 |
绝对原装进口现货,假一赔十,价格优势!? |
询价 | ||
NXP |
23+ |
DIP |
3200 |
绝对全新原装!优势供货渠道!特价!请放心订购! |
询价 |