參數(shù)資料
型號: 74HC390
廠商: NXP Semiconductors N.V.
元件分類: 通用總線功能
英文描述: Dual decade ripple counter
中文描述: 雙十年紋波計數(shù)器
文件頁數(shù): 7/7頁
文件大?。?/td> 49K
代理商: 74HC390
December 1990
7
Philips Semiconductors
Product specification
Dual decade ripple counter
74HC/HCT390
AC WAVEFORMS
PACKAGE OUTLINES
See
“74HC/HCT/HCU/HCMOS Logic Package Outlines”
.
Fig.6
Waveforms showing the clock (nCP
n
) to output (nQ
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.7
Waveforms showing the master reset (nMR) pulse width, the master reset to output (nQ
n
) propagation
delays and the master reset to clock (nCP
n
) 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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