參數(shù)資料
型號(hào): 74HC688
廠商: NXP Semiconductors N.V.
英文描述: 8-bit magnitude comparator
中文描述: 8位數(shù)值比較
文件頁數(shù): 7/7頁
文件大?。?/td> 48K
代理商: 74HC688
December 1990
7
Philips Semiconductors
Product specification
8-bit magnitude comparator
74HC/HCT688
AC WAVEFORMS
Fig.6
Waveforms showing the enable input (E) to
the equal to output (P = Q) propagation
delays and the output transition times.
(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 word inputs (P
n
, Q
n
)
to the equal to output (P = Q) propagation
delays and the output transition times.
(1) HC : V
M
= 50%; V
I
= GND to V
.
HCT: V
M
= 1.3 V; V
I
= GND to 3 V.
APPLICATION INFORMATION
Two or more “688” 8-bit magnitude comparators may be cascaded to compare binary or BCD numbers of more than 8
bits. An example is shown in Fig.8.
PACKAGE OUTLINES
See
“74HC/HCT/HCU/HCMOS Logic Package Outlines”
.
Fig.8 Binary or BCD comparator.
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