MM74HC688SJX Fairchild Semiconductor, MM74HC688SJX Datasheet

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MM74HC688SJX

Manufacturer Part Number
MM74HC688SJX
Description
IC COMPARATOR MAGNITUDE 8B 20SOP
Manufacturer
Fairchild Semiconductor
Series
74HCr
Type
Magnitude Comparatorr
Datasheet

Specifications of MM74HC688SJX

Number Of Bits
8
Delay Time - Propagation
19ns
Current - Supply
8µA
Voltage - Supply
2 V ~ 6 V
Operating Temperature
-40°C ~ 85°C
Package / Case
20-SOIC (5.3mm Width), 20-SO, 20-SOEIAJ
Logic Family
HC
Technology
CMOS
High Level Output Current
-5.2mA
Low Level Output Current
5.2mA
Output Function
A=B
Package Type
SOP
Quiescent Current
8uA
Mounting
Surface Mount
Pin Count
20
Polarity
Inverting
Abs. Propagation Delay Time
220ns
Operating Supply Voltage (typ)
2.5/3.3/5V
Operating Supply Voltage (max)
6V
Operating Supply Voltage (min)
2V
Operating Temperature (max)
85C
Operating Temperature (min)
-40C
Operating Temperature Classification
Industrial
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
© 2005 Fairchild Semiconductor Corporation
MM74HC688WM
MM74HC688SJ
MM74HC688MTC
MM74HC688N
MM74HC688
8-Bit Magnitude Comparator (Equality Detector)
General Description
The MM74HC688 equality detector utilizes advanced sili-
con-gate CMOS technology to compare bit for bit two 8-bit
words and indicates whether or not they are equal. The
P Q output indicates equality when it is LOW. A single
active low enable is provided to facilitate cascading of sev-
eral packages and enable comparison of words greater
than 8 bits.
This device is useful in memory block decoding applica-
tions, where memory block enable signals must be gener-
ated from computer address information.
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Connection Diagram
Truth Table
Order Number
P
P
P
Data
P,Q
!

X
Pin Assignments for DIP
Q
Q
Q
Package Number
Inputs
Top View
MTC20
M20D
M20B
N20A
Enable
G
H
L
L
L
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide
20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide
P
H
H
H
L
Q
DS005018
The comparator’s output can drive 10 low power Schottky
equivalent loads. This comparator is functionally and pin
compatible to the 74LS688. All inputs are protected from
damage due to static discharge by diodes to V
ground.
Features
Logic Diagram
Typical propagation delay: 20 ns
Wide power supply range: 2–6V
Low quiescent current: 80
Large output current: 4 mA (74 Series)
Same as HC521
Package Description
P
A (74 Series)
September 1983
Revised May 2005
www.fairchildsemi.com
CC
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MM74HC688SJX Summary of contents

Page 1

... © 2005 Fairchild Semiconductor Corporation The comparator’s output can drive 10 low power Schottky equivalent loads. This comparator is functionally and pin compatible to the 74LS688. All inputs are protected from damage due to static discharge by diodes to V ground. Features Typical propagation delay Wide power supply range: 2–6V ...

Page 2

Absolute Maximum Ratings (Note 2) Supply Voltage ( Input Voltage ( Output Voltage (V ) OUT Clamp Diode Current ( Output Current, per pin (I ) OUT DC ...

Page 3

AC Electrical Characteristics Symbol Parameter Maximum Propagation PHL PLH Delay, any Output ...

Page 4

Physical Dimensions inches (millimeters) unless otherwise noted 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300" Wide www.fairchildsemi.com Package Number M20B 4 ...

Page 5

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 20-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide Package Number M20D 5 www.fairchildsemi.com ...

Page 6

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 20-Lead Thin Shrink Small Outline Package (TSSOP), JEDEC MO-153, 4.4mm Wide www.fairchildsemi.com Package Number MTC20 6 ...

Page 7

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide Fairchild does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and Fairchild reserves the right ...

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