M54HC688D [STMICROELECTRONICS]
RAD-HARD 8 BIT EQUALITY COMPARATOR; 抗辐射的8位比较平等
| 型号： | M54HC688D |
| 厂家： | 
ST |
| 描述： | RAD-HARD 8 BIT EQUALITY COMPARATOR |
| 文件： | 总10页 (文件大小：304K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
M54HC688
RAD-HARD 8 BIT EQUALITY COMPARATOR
= 6V
CC
■
■
■
■
■
■
■
HIGH SPEED:
= 17ns (TYP.) at V
t
PD
LOW POWER DISSIPATION:
= 4µA(MAX.) at T =25°C
I
CC
A
HIGH NOISE IMMUNITY:
= V = 28% V (MIN.)
V
NIH
NIL
CC
SYMMETRICAL OUTPUT IMPEDANCE:
|I | = I = 4mA (MIN)
DILC-20
FPC-20
OH
OL
BALANCED PROPAGATION DELAYS:
t
t
PLH
PHL
WIDE OPERATING VOLTAGE RANGE:
(OPR) = 2V to 6V
ORDER CODES
PACKAGE
V
CC
FM
EM
PIN AND FUNCTION COMPATIBLE WITH
54 SERIES 688
SPACE GRADE-1: ESA SCC QUALIFIED
50 krad QUALIFIED, 100 krad AVAILABLE ON
REQUEST
NO SEL UNDER HIGH LET HEAVY IONS
IRRADIATION
DEVICE FULLY COMPLIANT WITH
SCC-9209-005
DILC
FPC
M54HC688D
M54HC688K
M54HC688D1
M54HC688K1
■
■
The M54HC688 compares bit for bit two 8-bit
words applied on inputs P0 - P7 and inputs Q0 -
Q7 and indicates whether or not they are equal. A
single active low enable is provided to facilitate
cascading
comparison of words greater than 8 bits.
■
■
several
packages
to
enable
All inputs are equipped with protection circuits
against static discharge and transient excess
voltage.
DESCRIPTION
The M54HC688 is an high speed CMOS 8 BIT
EQUALITY COMPARATOR fabricated with silicon
2
gate C MOS technology.
PIN CONNECTION
Rev. 1
1/10
June 2004
M74HC688
Figure 1: IEC Logic Symbols
Figure 2: Input And Output Equivalent Circuit
Table 1: Pin Description
PIN N°
SYMBOL
NAME AND FUNCTION
1
G
Enable Input (Active
LOW)
2, 4, 6, 8, 11,
13, 15, 17
P0 to P7
Q0 to Q7
Word Inputs
3, 5, 7, 9, 12,
14, 16, 18
Word Outputs
19
10
20
P = Q
GND
Equal to Output
Ground (0V)
V
Positive Supply Voltage
CC
Table 2: Truth Table
INPUTS
OUTPUT
P = Q
P, Q
G
P = Q
P <> Q
X
L
L
L
H
H
H
X: Don’t Care
2/10
M74HC688
Figure 3: Logic Diagram
This logic diagram has not be used to estimate propagation delays
Table 3: Absolute Maximum Ratings
Symbol
Parameter
Value
Unit
V
Supply Voltage
-0.5 to +7
V
V
CC
V
DC Input Voltage
-0.5 to V + 0.5
I
CC
V
DC Output Voltage
DC Input Diode Current
DC Output Diode Current
DC Output Current
-0.5 to V + 0.5
V
O
CC
I
± 20
± 20
mA
mA
mA
mA
mW
°C
IK
I
OK
I
± 25
O
I
or I
DC V
or Ground Current
CC
± 50
CC
GND
P
Power Dissipation
300
D
T
Storage Temperature
Lead Temperature (10 sec)
-65 to +150
265
stg
T
°C
L
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is
not implied
3/10
M74HC688
Table 4: Recommended Operating Conditions
Symbol
Parameter
Value
Unit
V
Supply Voltage
2 to 6
0 to V
V
V
CC
V
Input Voltage
I
CC
V
Output Voltage
0 to V
CC
V
O
T
Operating Temperature
Input Rise and Fall Time
-55 to 125
0 to 1000
0 to 500
0 to 400
°C
ns
ns
ns
op
V
V
V
= 2.0V
= 4.5V
= 6.0V
CC
CC
CC
t , t
r
f
Table 5: DC Specifications
Test Condition
Value
-40 to 85°C -55 to 125°C Unit
T
= 25°C
Symbol
Parameter
A
V
CC
(V)
Min. Typ. Max. Min. Max. Min. Max.
V
High Level Input
Voltage
2.0
4.5
6.0
2.0
4.5
6.0
2.0
1.5
3.15
4.2
1.5
3.15
4.2
1.5
3.15
4.2
IH
V
V
V
Low Level Input
Voltage
0.5
1.35
1.8
0.5
1.35
1.8
0.5
1.35
1.8
IL
V
High Level Output
Voltage
I =-20 µA
1.9
4.4
5.9
2.0
4.5
6.0
1.9
4.4
1.9
4.4
OH
O
I =-20 µA
4.5
6.0
4.5
6.0
2.0
4.5
6.0
4.5
6.0
O
I =-20 µA
5.9
5.9
V
V
O
I =-4.0 mA
4.18 4.31
4.13
5.63
4.10
5.60
O
I =-5.2 mA
5.68
5.8
0.0
0.0
0.0
O
V
Low Level Output
Voltage
I =20 µA
0.1
0.1
0.1
0.1
0.1
0.1
0.1
OL
O
I =20 µA
O
I =20 µA
0.1
0.1
O
I =4.0 mA
0.17 0.26
0.18 0.26
0.33
0.33
0.40
0.40
O
I =5.2 mA
O
I
Input Leakage
Current
I
V = V or GND
6.0
6.0
± 0.1
± 1
± 1
µA
µA
I
CC
I
Quiescent Supply
Current
CC
V = V or GND
4
40
80
I
CC
4/10
M74HC688
Table 6: AC Electrical Characteristics (C = 50 pF, Input t = t = 6ns)
L
r
f
Test Condition
Value
-40 to 85°C -55 to 125°C Unit
T
= 25°C
Symbol
Parameter
A
V
CC
(V)
Min. Typ. Max. Min. Max. Min. Max.
t
t
Output Transition
Time
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
30
8
75
15
95
19
110
22
TLH THL
ns
ns
ns
7
13
16
19
t
t
t
Propagation Delay
Time
(Pn, Qn - P=Q)
60
21
17
40
13
10
170
34
215
43
255
51
PLH PHL
29
37
43
t
Propagation Delay
Time
(G - P=Q)
110
22
140
28
165
33
PLH PHL
19
24
28
Table 7: Capacitive Characteristics
Test Condition
Value
-40 to 85°C -55 to 125°C Unit
T
= 25°C
Symbol
Parameter
A
V
CC
(V)
Min. Typ. Max. Min. Max. Min. Max.
C
Input Capacitance
5
10
10
10
pF
pF
IN
C
Power Dissipation
Capacitance (note
1)
PD
32
1) C is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without
PD
load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. I
= C x V x f + I
CC(opr)
PD CC IN CC
Figure 4: Test Circuit
C
R
= 50pF/150pF or equivalent (includes jig and probe capacitance)
L
T
= Z
of pulse generator (typically 50Ω)
OUT
5/10
M74HC688
Figure 5: Waveform - Propagation Delay Time (f=1MHz; 50% duty cycle)
6/10
M74HC688
DILC-20 MECHANICAL DATA
mm.
inch
TYP.
DIM.
MIN.
TYP
MAX.
MIN.
MAX.
A
a1
a2
B
2.1
3.00
0.63
1.93
0.40
0.20
25.14
7.36
2.71
3.70
1.14
2.23
0.50
0.30
25.65
7.87
0.083
0.118
0.025
0.076
0.016
0.008
0.990
0.290
0.107
0.146
0.045
0.088
0.020
0.012
1.010
0.310
0.88
2.03
0.45
0.254
25.40
7.62
2.54
22.86
7.87
7.49
0.035
0.080
0.018
0.010
1.000
0.300
0.100
0.900
0.310
0.295
b
b1
D
E
e
e1
e2
F
22.73
7.62
7.29
22.99
8.12
7.70
3.86
11.56
1.40
0.895
0.300
0.287
0.905
0.320
0.303
0.152
0.455
0.055
I
K
11.30
1.14
0.445
0.045
L
1.27
0.050
0016178J
7/10
M74HC688
FPC-20 MECHANICAL DATA
mm.
inch
DIM.
MIN.
9.98
9.98
1.45
0.10
11.30
TYP
10.16
10.16
1.61
MAX.
10.34
10.34
1.78
MIN.
0.393
0.393
0.57
TYP.
0.400
0.400
0.63
MAX.
0.407
0.407
0.070
0.007
0.455
A
B
C
D
E
F
0.127
11.43
1.27
0.18
0.004
0.445
0.005
0.450
0.050
0.017
11.56
G
H
L
0.38
7.24
0.43
0.48
8.16
0.015
0.285
0.960
0.018
0.019
0.320
1.050
0.022
24.46
0.45
26.67
0.55
M
N
O
P
0.50
7.87
1.27
0.18
0.020
0.310
0.050
0.007
1.14
0.10
1.40
0.25
0.045
0.004
0.055
0.010
016032F
8/10
M74HC688
Table 8: Revision History
Date
Revision
Description of Changes
01-Jun-2004
1
First Release
9/10
M74HC688
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from
its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications
mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information
previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or
systems without express written approval of STMicroelectronics.
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All other names are the property of their respective owners
© 2004 STMicroelectronics - All Rights Reserved
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10/10
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