STMICROELECTRONICS M74HC688M1R

M54HC688
M74HC688
8 BIT EQUALITY COMPARATOR
.
.
.
.
.
.
.
.
HIGH SPEED
tPD = 17 ns (TYP.) AT VCC = 5 V
LOW POWER DISSIPATION
ICC = 4 µA (MAX.) AT TA = 25 °C
HIGH NOISE IMMUNITY
VNIH = VNIL = 28 % VCC (MIN.)
OUTPUT DRIVE CAPABILITY
10 LSTTL LOADS
SYMMETRICAL OUTPUT IMPEDANCE
|IOH| = IOL = 4 mA (MIN.)
BALANCED PROPAGATION DELAYS
tPLH = tPHL
WIDE OPERATING VOLTAGE RANGE
VCC (OPR) = 2 V TO 6 V
PIN AND FUNCTION COMPATIBLE
WITH 54/74LS688
B1R
(Plastic Package)
F1R
(Ceramic Package)
M1R
(Micro Package)
C1R
(Chip Carrier)
ORDER CODES :
M54HC688F1R
M74HC688M1R
M74HC688B1R
M74HC688C1R
PIN CONNECTIONS (top view)
DESCRIPTION
The M54/74HC688 utilizes silicon gate C2MOS
technology to achieve operating speeds equivalent
to LSTTL devices. Along with the low power dissi2
pation and high noise immunity of standard C MOS
integrated circuit, it possesses the driving capability
of 10 LSTTL load. The M54/74HC688 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 several packages to enable comparison of words greater than 8 bits. All inputs are
equipped with protection circuit against static discharge and transient excess voltage.
October 1992
NC =
No Internal
Connection
1/10
M54/M74HC688
INPUT AND OUTPUT EQUIVALENT CIRCUIT
TRUTH TABLE
INPUT
P, Q
G
P=Q
P=Q
P≠Q
L
L
L
H
X
H
H
X: DON’T CARE
LOGIC DIAGRAM
2/10
OUTPUT
M54/M74HC688
PIN DESCRIPTION
IEC LOGIC SYMBOL
PIN No
SYMBOL
1
G
NAME AND FUNCTION
2, 4, 6, 8,
11, 13, 15,
17
3, 5, 7, 9,
12, 14, 16,
18
19
P0 to P7
Enable Input (Active
LOW)
Word Inputs
Q0 to Q7
Word Outputs
P=Q
Equal to Output
10
GND
Ground (0V)
20
V CC
Positive Supply Voltage
ABSOLUTE MAXIMUM RATINGS
Symbol
VCC
Parameter
Supply Voltage
Value
-0.5 to +7
Unit
V
VI
DC Input Voltage
-0.5 to VCC + 0.5
V
VO
IIK
DC Output Voltage
DC Input Diode Current
-0.5 to VCC + 0.5
± 20
V
mA
IOK
DC Output Diode Current
± 20
mA
DC Output Source Sink Current Per Output Pin
DC VCC or Ground Current
± 25
± 50
mA
mA
500 (*)
mW
IO
ICC or IGND
PD
Power Dissipation
Tstg
TL
Storage Temperature
Lead Temperature (10 sec)
-65 to +150
300
o
o
C
C
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition isnotimplied.
(*) 500 mW: ≅ 65 oC derate to 300 mW by 10mW/oC: 65 oC to 85 oC
RECOMMENDED OPERATING CONDITIONS
Symbol
VCC
Parameter
Supply Voltage
VI
Input Voltage
VO
Top
Output Voltage
Operating Temperature: M54HC Series
M74HC Series
tr, tf
Input Rise and Fall Time
Value
2 to 6
Unit
V
0 to VCC
V
0 to VCC
-55 to +125
-40 to +85
VCC = 2 V
0 to 1000
VCC = 4.5 V
VCC = 6 V
0 to 500
0 to 400
V
C
o
C
o
ns
3/10
M54/M74HC688
DC SPECIFICATIONS
Test Conditions
Symbol
VIH
V IL
Parameter
High Level Input
Voltage
Low Level Input
Voltage
Value
VCC
(V)
TA = 25 oC
54HC and 74HC
Min. Typ. Max.
2.0
1.5
1.5
1.5
4.5
6.0
3.15
4.2
3.15
4.2
3.15
4.2
High Level
Output Voltage
0.5
0.5
0.5
4.5
1.35
1.35
1.35
2.0
4.5
6.0
4.5
VOL
Low Level Output
Voltage
6.0
2.0
4.5
6.0
4.5
6.0
II
ICC
4/10
Input Leakage
Current
Quiescent Supply
Current
6.0
6.0
1.8
1.8
Unit
V
2.0
6.0
V OH
-40 to 85 oC -55 to 125 oC
74HC
54HC
Min. Max. Min. Max.
V
1.8
1.9
2.0
1.9
1.9
VI =
IO=-20 µA
VIH
or
V IL IO=-4.0 mA
4.4
5.9
4.5
6.0
4.4
5.9
4.4
5.9
4.18
4.31
4.13
4.10
IO=-5.2 mA
5.68
5.8
0.0
5.63
5.60
V
VI =
IO= 20 µA
VIH
or
V IL IO= 4.0 mA
0.1
0.1
0.1
0.0
0.1
0.1
0.1
0.0
0.17
0.1
0.26
0.1
0.33
0.1
0.40
IO= 5.2 mA
0.18
V
0.26
0.33
0.40
VI = VCC or GND
±0.1
±1
±1
µA
VI = VCC or GND
4
40
80
µA
M54/M74HC688
AC ELECTRICAL CHARACTERISTICS (C L = 50 pF, Input t r = tf = 6 ns)
Test Conditions
Value
Symbol
Parameter
VCC
(V)
TA = 25 oC
54HC and 74HC
Min. Typ. Max.
tTLH
tTHL
Output Transition
Time
2.0
30
75
95
110
4.5
6.0
8
7
15
13
19
16
22
19
tPLH
tPHL
Propagation
Delay Time
(Pn, Qn - P = Q)
2.0
60
170
215
255
4.5
21
34
43
51
6.0
17
29
37
43
tPLH
tPHL
Propagation
Delay Time
(G - P = Q)
2.0
40
110
140
165
4.5
6.0
13
10
22
19
28
24
33
28
ns
10
10
10
pF
CIN
Input Capacitance
5
CPD (*)
Power Dissipation
Capacitance
32
-40 to 85 oC -55 to 125 oC
74HC
54HC
Min. Max. Min. Max.
Unit
ns
ns
pF
(*) CPD is defined as the value of the IC’s internal equivalent capacitance which is calculated from the operating current consumption without load.
(Refer to Test Circuit). Average operting current can be obtained by the following equation. ICC(opr) = CPD •VCC •fIN + ICC
SWITCHING CHARACTERISTICS TEST
WAVEFORM
TEST CIRCUIT ICC (Opr.)
INPUT WAVEFORM IS THE SAME AS THAT IN CASE OF
SWITCHING CHARACTERISTICS TEST.
5/10
M54/M74HC688
Plastic DIP20 (0.25) MECHANICAL DATA
mm
DIM.
MIN.
a1
0.254
B
1.39
TYP.
inch
MAX.
MIN.
TYP.
MAX.
0.010
1.65
0.055
0.065
b
0.45
0.018
b1
0.25
0.010
D
25.4
1.000
E
8.5
0.335
e
2.54
0.100
e3
22.86
0.900
F
7.1
0.280
I
3.93
0.155
L
Z
3.3
0.130
1.34
0.053
P001J
6/10
M54/M74HC688
Ceramic DIP20 MECHANICAL DATA
mm
DIM.
MIN.
TYP.
inch
MAX.
MIN.
TYP.
MAX.
A
25
0.984
B
7.8
0.307
D
E
3.3
0.5
e3
0.130
1.78
0.020
22.86
0.070
0.900
F
2.29
2.79
0.090
0.110
G
0.4
0.55
0.016
0.022
I
1.27
1.52
0.050
0.060
L
0.22
0.31
0.009
0.012
M
0.51
1.27
0.020
0.050
N1
P
Q
4° (min.), 15° (max.)
7.9
8.13
5.71
0.311
0.320
0.225
P057H
7/10
M54/M74HC688
SO20 MECHANICAL DATA
mm
DIM.
MIN.
TYP.
A
a1
inch
MAX.
MIN.
TYP.
2.65
0.10
0.104
0.20
a2
MAX.
0.004
0.007
2.45
0.096
b
0.35
0.49
0.013
0.019
b1
0.23
0.32
0.009
0.012
C
0.50
0.020
c1
45° (typ.)
D
12.60
13.00
0.496
0.512
E
10.00
10.65
0.393
0.419
e
1.27
0.050
e3
11.43
0.450
F
7.40
7.60
0.291
0.299
L
0.50
1.27
0.19
0.050
M
S
0.75
0.029
8° (max.)
P013L
8/10
M54/M74HC688
PLCC20 MECHANICAL DATA
mm
DIM.
MIN.
TYP.
inch
MAX.
MIN.
TYP.
MAX.
A
9.78
10.03
0.385
0.395
B
8.89
9.04
0.350
0.356
D
4.2
4.57
0.165
0.180
d1
2.54
0.100
d2
0.56
0.022
E
7.37
8.38
0.290
0.330
e
1.27
0.050
e3
5.08
0.200
F
0.38
0.015
G
0.101
0.004
M
1.27
0.050
M1
1.14
0.045
P027A
9/10
M54/M74HC688
Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsability for the
consequences of use of such information nor for any infringement of patents or other rights of third parties which may results from its use. No
license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned
in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied.
SGS-THOMSON Microelectronics products are not authorized for use ascritical components in life support devices or systems without express
written approval of SGS-THOMSON Microelectonics.
 1994 SGS-THOMSON Microelectronics - All Rights Reserved
SGS-THOMSON Microelectronics GROUP OF COMPANIES
Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdom - U.S.A
10/10