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參數(shù)資料
| 型號： | M54HC688 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | 8 Bit Equality Comparator(8位相同比較器) |
| 中文描述： | 平等8位比較器（8位相同比較器） |
| 文件頁數(shù)： | 1/10頁 |
| 文件大小： | 242K |
| 代理商： | M54HC688 |
M54HC688
M74HC688
October 1992
8 BIT EQUALITY COMPARATOR
B1R
(Plastic Package)
ORDER CODES :
M54HC688F1R
M74HC688B1R
M74HC688M1R
M74HC688C1R
F1R
(CeramicPackage)
M1R
(MicroPackage)
C1R
(Chip Carrier)
PIN CONNECTIONS
(top view)
NC =
No Internal
Connection
DESCRIPTION
The M54/74HC688 utilizes silicon gate C
2
MOS
technology to achieve operating speeds equivalent
to LSTTL devices. Along with the low power dissi-
pationand high noiseimmunity of standard C
2
MOS
integrated circuit,it possesses the driving capability
of 10LSTTL load. TheM54/74HC688 compares bit
for bit two 8-bit words applied on inputs P0 -P7and
inputsQ0-Q7andindicates whether ornottheyare
equal. A singleactive low enable is provided to fa-
cilitate cascading several packages to enable com-
parison of words greater than 8 bits. All inputs are
equipped with protection circuit against static dis-
charge and transient excess voltage.
.
HIGH SPEED
t
PD
= 17 ns(TYP.) AT V
CC
= 5 V
.
LOWPOWER DISSIPATION
I
CC
= 4
μ
A(MAX.) AT T
A
= 25
°
C
.
HIGH NOISE IMMUNITY
V
NIH
= V
NIL
= 28 % V
CC
(MIN.)
.
OUTPUT DRIVE CAPABILITY
10 LSTTL LOADS
.
SYMMETRICAL OUTPUT IMPEDANCE
|I
OH
|
=
I
OL
= 4 mA (MIN.)
.
BALANCEDPROPAGATION DELAYS
t
PLH
= t
PHL
.
WIDE OPERATING VOLTAGE RANGE
V
CC
(OPR) = 2 V TO6 V
.
PIN ANDFUNCTION COMPATIBLE
WITH 54/74LS688
1/10
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