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74HC688DB 数据手册 - NXP（恩智浦）
制造商:
NXP（恩智浦）
分类:
比较器
封装:
SSOP
描述:
8位幅值比较器 8-bit magnitude comparator
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74HC688DB数据手册
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若手册格式错乱，请下载阅览PDF原文件
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
CC
.
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
CC
.
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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