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參數(shù)資料
| 型號： | 933282710652 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 計數(shù)器 |
| 英文描述： | 4000/14000/40000 SERIES, ASYN NEGATIVE EDGE TRIGGERED 14-BIT UP BINARY COUNTER, PDIP16 |
| 封裝： | PLASTIC, SOT-38-1, DIP-16 |
| 文件頁數(shù)： | 2/6頁 |
| 文件大?。?/td> | 60K |
| 代理商： | 933282710652 |
January 1995
2
Philips Semiconductors
Product specication
14-stage binary counter
HEF4020B
MSI
DESCRIPTION
The HEF4020B is a 14-stage binary ripple counter with a
clock input (CP), an overriding asynchronous master reset
input (MR) and twelve fully buffered outputs (O0, O3 to
O13). The counter advances on the HIGH to LOW
transition of CP. A HIGH on MR clears all counter stages
and forces all outputs LOW, independent of the state of
CP. Each counter stage is a static toggle flip-flop. A feature
of the HEF4020B is: high speed (typ. 35 MHz at
VDD = 15 V).
Fig.1 Functional diagram.
Fig.2 Pinning diagram.
PINNING
FAMILY DATA, IDD LIMITS category MSI
See Family Specifications
HEF4020BP(N):
16-lead DIL; plastic
(SOT38-1)
HEF4020BD(F):
16-lead DIL; ceramic (cerdip)
(SOT74)
HEF4020BT(D):
16-lead SO; plastic
(SOT109-1)
( ): Package Designator North America
CP
clock input (HIGH to LOW edge
triggered)
MR
master reset input (active HIGH)
O0, O3 to O13
parallel outputs
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