STMICROELECTRONICS M74HCT688M1R

M54HCT688
M74HCT688
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
COMPATIBLE WITH TTL OUTPUTS
VIH = 2V (MIN.) VIL = 0.8V (MAX)
OUTPUT DRIVE CAPABILITY
10 LSTTL LOADS
SYMMETRICAL OUTPUT IMPEDANCE
|IOH| = IOL = 4 mA (MIN.)
BALANCED PROPAGATION DELAYS
tPLH = tPHL
PIN AND FUNCTION COMPATIBLE
WITH 54/74LS688
B1R
(Plastic Package)
F1R
(Ceramic Package)
M1R
(Micro Package)
C1R
(Chip Carrier)
ORDER CODES :
M54HCT688F1R
M74HCT688M1R
M74HCT688B1R
M74HCT688C1R
PIN CONNECTIONS (top view)
DESCRIPTION
The M54/74HCT688 utilizes silicon gate C2MOS
technology to achieve operating speeds equivalent
to LSTTL devices. Along with the low power
dissipation and high noise immunity of standard
C2MOS integrated circuit, it possesses the driving
capability of 10 LSTTL load. The M54/74HCT688
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.
This integrated circuit has input and output
characteristics that are fully compatible with 54/74
LSTTL logic families. M54/74HCT devices are
2
designed to directly interface HSC MOS systems
with TTL and NMOS components. They are also
plug in replacements for LSTTL devices giving a
reduction of power consumption.
All inputs are equipped with protection circuit
against static discharge and transient excess
voltage.
February 1993
NC =
No Internal
Connection
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M54/M74HCT688
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/M74HCT688
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 (VCC = 4.5 to 5.5V)
Value
4.5 to 5.5
Unit
V
0 to VCC
V
0 to VCC
-55 to +125
-40 to +85
0 to 500
V
C
o
C
o
ns
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M54/M74HCT688
DC SPECIFICATIONS
Test Conditions
Symbol
Parameter
VCC
(V)
VIH
High Level Input
Voltage
4.5
to
5.5
V IL
Low Level Input
Voltage
4.5
to
5.5
V OH
High Level
Output Voltage
VOL
II
ICC
∆ICC
4/10
Low Level Output
Voltage
Input Leakage
Current
Quiescent Supply
Current
Additional worst
case supply
current
Value
TA = 25 oC
54HC and 74HC
Min. Typ. Max.
2.0
-40 to 85 oC -55 to 125 oC
74HC
54HC
Min. Max. Min. Max.
2.0
0.8
4.5
VI = IO=-20 µA
VIH
or IO=-4.0 mA
V IL
4.5
VI = IO= 20 µA
VIH
or IO= 4.0 mA
V IL
2.0
0.8
V
0.8
4.4
4.5
4.4
4.4
4.18
4.31
4.13
4.10
Unit
V
V
0.0
0.1
0.1
0.1
0.17
0.26
0.33
0.4
VI = VCC or GND
±0.1
±1
±1
µA
5.5
VI = VCC or GND
4
40
80
µA
5.5
Per Input pin
VI = 0.5V or
V I = 2.4V
Other Inputs at
V CC or GND
2.0
2.9
3.0
mA
5.5
V
M54/M74HCT688
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.
-40 to 85 oC -55 to 125 oC
74HC
54HC
Min. Max. Min. Max.
tTLH
tTHL
Output Transition
Time
4.5
8
15
19
22
tPLH
tPHL
Propagation
Delay Time
(Pn, Qn - P = Q)
4.5
21
32
40
48
tPLH
tPHL
Propagation
Delay Time
(G - P = Q)
4.5
CIN
Input Capacitance
5
CPD (*)
Power Dissipation
Capacitance
32
Unit
ns
ns
15
23
29
35
ns
10
10
10
pF
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.
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M54/M74HCT688
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
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M54/M74HCT688
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/M74HCT688
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/M74HCT688
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/M74HCT688
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
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