參數(shù)資料
型號(hào)： 74HC688
廠商： Motorola, Inc.
英文描述： 8-Bit Equality Comparator
中文描述： 8位比較平等
文件頁數(shù)： 2/7頁
文件大?。?/td> 48K
代理商： 74HC688
December 1990
2
Philips Semiconductors
Product specification
8-bit magnitude comparator
74HC/HCT688
FEATURES
Compare two 8-bit words
Output capability: standard
I
CC
category: MSI
GENERAL DESCRIPTION
The 74HC/HCT688 are high-speed Si-gate CMOS devices
and are pin compatible with low power Schottky TTL
(LSTTL). They are specified in compliance with JEDEC
standard no. 7A.
The 74HC/HCT688 are 8-bit magnitude comparators.
They perform comparison of two 8-bit binary or BCD
words.
The output provides P = Q.
QUICK REFERENCE DATA
GND = 0 V; T
amb
= 25
°
C; t
r
= t
f
= 6 ns
Notes
1.
C
PD
is used to determine the dynamic power dissipation (P
D
in
μ
W):
P
D
= C
PD
×
V
CC2
×
f
i
+ ∑
(C
L
×
V
CC2
×
f
o
)
f
i
= input frequency in MHz
f
o
= output frequency in MHz
∑
(C
L
×
V
CC2
×
f
o
) = sum of outputs
C
L
= output load capacitance in pF
V
CC
= supply voltage in V
For HC the condition is V
I
= GND to V
CC
For HCT the condition is V
I
= GND to V
CC
1.5 V
where:
2.
ORDERING INFORMATION
See
“74HC/HCT/HCU/HCMOS Logic Package Information”
.
SYMBOL
PARAMETER
CONDITIONS
TYPICAL
UNIT
HC
HCT
t
PHL/
t
PLH
propagation delay
P
n
, Q
n
to P = Q
E to P = Q
input capacitance
power dissipation capacitance per package
C
L
= 15 pF; V
CC
= 5 V
17
8
3.5
30
17
12
3.5
30
ns
ns
pF
pF
C
I
C
PD
notes 1 and 2
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
74HC688D 功能描述:校驗(yàn)器 IC 8-BIT MAGNITUDE COMP RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補(bǔ)償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應(yīng)時(shí)間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel
74HC688D,652 功能描述:校驗(yàn)器 IC 8-BIT MAGNITUDE COMP RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補(bǔ)償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應(yīng)時(shí)間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel
74HC688D,653 功能描述:校驗(yàn)器 IC 8-BIT MAGNITUDE COMPARATOR RoHS:否 制造商:STMicroelectronics 產(chǎn)品: 比較器類型: 通道數(shù)量: 輸出類型:Push-Pull 電源電壓-最大:5.5 V 電源電壓-最小:1.1 V 補(bǔ)償電壓（最大值）:6 mV 電源電流（最大值）:1350 nA 響應(yīng)時(shí)間: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SC-70-5 封裝:Reel
74HC688D 制造商:NXP Semiconductors 功能描述:IC 74HC CMOS SMD 74HC688 SOIC20
74HC688D652 制造商:NXP Semiconductors 功能描述:IC 8BIT MAGNITUDE COMPARATOR SOIC-20
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