M74HC688 STMICROELECTRONICS [STMicroelectronics], M74HC688 Datasheet

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M74HC688

Manufacturer Part Number
M74HC688
Description
8 BIT EQUALITY COMPARATOR
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet

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DESCRIPTION
The M54/74HC688 utilizes silicon gate C
technology to achieve operating speeds equivalent
to LSTTL devices. Along with the low power dissi-
pation and high noise immunity of standard C
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 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.
October 1992
HIGH SPEED
t
LOW POWER DISSIPATION
I
HIGH NOISE IMMUNITY
V
OUTPUT DRIVE CAPABILITY
10 LSTTL LOADS
SYMMETRICAL OUTPUT IMPEDANCE
|I
BALANCED PROPAGATION DELAYS
t
WIDE OPERATING VOLTAGE RANGE
V
PIN AND FUNCTION COMPATIBLE
WITH 54/74LS688
PD
CC
PLH
OH
NIH
CC
= 17 ns (TYP.) AT V
= 4 A (MAX.) AT T
|
= t
(OPR) = 2 V TO 6 V
=
= V
I
OL
PHL
NIL
= 4 mA (MIN.)
= 28 % V
CC
A
CC
(MIN.)
= 25 C
= 5 V
2
2
MOS
MOS
8 BIT EQUALITY COMPARATOR
NC =
No Internal
Connecti o n
(Plastic Package)
(Micro Package)
M54HC688F1R
M74HC688B1R
PIN CONNECTIONS (top view)
M1R
B1R
ORDER CODES :
M74HC688
M54HC688
M74HC688M1R
M74HC688C1R
(Ceramic Package)
(Chip Carrier)
C1R
F1R
1/10

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M74HC688 Summary of contents

Page 1

... October 1992 8 BIT EQUALITY COMPARATOR B1R (Plastic Package) M1R (Micro Package) ORDER CODES : M54HC688F1R M74HC688B1R PIN CONNECTIONS (top view) 2 MOS 2 MOS Internal Connecti o n M54HC688 M74HC688 F1R (Ceramic Package) C1R (Chip Carrier) M74HC688M1R M74HC688C1R 1/10 ...

Page 2

... M54/M74HC688 INPUT AND OUTPUT EQUIVALENT CIRCUIT TRUTH TABLE INPUT DON’T CARE LOGIC DIAGRAM 2/10 OUTPUT ...

Page 3

... Operating Temperature: M54HC Series op M74HC Series Input Rise and Fall Time r f IEC LOGIC SYMBOL 4 M54/M74HC688 Value Unit - 500 (*) mW o -65 to +150 ...

Page 4

... M54/M74HC688 DC SPECIFICATIONS Test Conditions Symbol Parameter V CC (V) V High Level Input 2.0 IH Voltage 4.5 6.0 V Low Level Input 2.0 IL Voltage 4.5 6.0 V High Level 2 Output Voltage 4.5 V 6.0 V 4.5 6.0 V Low Level Output 2 Voltage 4.5 V 6.0 V 4.5 6.0 I Input Leakage V I 6.0 Current I Quiescent Supply 6 Current 4/ 54HC and 74HC Min ...

Page 5

... TEST CIRCUIT ICC (Opr.) INPUT WAVEFORM IS THE SAME AS THAT IN CASE OF SWITCHING CHARACTERISTICS TEST. M54/M74HC688 o -55 to 125 C Unit 54HC Min. Max. 110 255 165 ...

Page 6

... M54/M74HC688 Plastic DIP20 (0.25) MECHANICAL DATA DIM. MIN. a1 0.254 B 1. 6/10 mm TYP. MAX. MIN. 0.010 1.65 0.055 0.45 0.25 25.4 8.5 2.54 22.86 7.1 3.93 3.3 1.34 inch TYP. MAX. 0.065 0.018 0.010 1.000 0.335 0.100 0.900 0.280 0.155 0.130 0.053 P001J ...

Page 7

... Ceramic DIP20 MECHANICAL DATA mm DIM. MIN. TYP 3.3 E 0.5 e3 22.86 F 2.29 G 0.4 I 1.27 L 0. 7.9 Q inch MAX. MIN. TYP. 25 7.8 0.130 1.78 0.020 0.900 2.79 0.090 0.55 0.016 1.52 0.050 0.31 0.009 1.27 0.020 4 (min.), 15 (max.) 8.13 0.311 5.71 M54/M74HC688 MAX. 0.984 0.307 0.070 0.110 0.022 0.060 0.012 0.050 0.320 0.225 P057H 7/10 ...

Page 8

... M54/M74HC688 DIM. MIN 0. 0. 12.60 E 10. 7. 8/10 SO20 MECHANICAL DATA mm TYP. MAX. MIN. 2.65 0.20 0.004 2.45 0.49 0.013 0.32 0.009 0.50 45 (typ.) 13.00 0.496 10.65 0.393 1.27 11.43 7.60 0.291 1.27 0.19 0.75 8 (max.) inch TYP. MAX. 0.104 0.007 0.096 0.019 0.012 0.020 0.512 0.419 0.050 0.450 0.299 0.050 0.029 P013L ...

Page 9

... PLCC20 MECHANICAL DATA mm DIM. MIN. TYP. A 9.78 B 8.89 D 4.2 d1 2.54 d2 0.56 E 7.37 e 1.27 e3 5. 1.27 M1 1.14 inch MAX. MIN. TYP. 10.03 0.385 9.04 0.350 4.57 0.165 0.100 0.022 8.38 0.290 0.050 0.200 0.015 0.101 0.050 0.045 M54/M74HC688 MAX. 0.395 0.356 0.180 0.330 0.004 P027A 9/10 ...

Page 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 ...

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