參數(shù)資料
型號(hào): 74HCT4020
廠商: NXP Semiconductors N.V.
元件分類(lèi): 通用總線功能
英文描述: 14-stage binary ripple counter(14級(jí)二進(jìn)制紋波計(jì)數(shù)器)
中文描述: 14位的二進(jìn)制紋波計(jì)數(shù)器(14級(jí)二進(jìn)制紋波計(jì)數(shù)器)
文件頁(yè)數(shù): 7/7頁(yè)
文件大?。?/td> 49K
代理商: 74HCT4020
September 1993
7
Philips Semiconductors
Product specification
14-stage binary ripple counter
74HC/HCT4020
AC WAVEFORMS
PACKAGE OUTLINES
See
“74HC/HCT/HCU/HCMOS Logic Package Outlines”
.
Fig.7
Waveforms showing the clock (CP) to output (Q
n
) propagation delays, the clock pulse width, the output
transition times and the maximum clock frequency.
(1) HC : V
M
= 50%; V
I
= GND to V
.
HCT: V
M
= 1.3 V; V
I
= GND to 3 V.
Fig.8
Waveforms showing the master reset (MR) pulse width, the master reset to output (Q
n
) propagation delays
and the master reset to clock (CP) removal time.
(1) HC : V
M
= 50%; V
I
= GND to V
.
HCT: V
M
= 1.3 V; V
I
= GND to 3 V.
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