74F524SC National Semiconductor, 74F524SC Datasheet

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74F524SC

Manufacturer Part Number
74F524SC
Description
Manufacturer
National Semiconductor
Type
Magnitude Comparatorr
Datasheet

Specifications of 74F524SC

Logic Family
F
Technology
Bipolar
Low Level Output Current
24mA
Output Function
A<B, A=B, A>B
Package Type
SOIC
Mounting
Surface Mount
Pin Count
20
Polarity
Non-Inverting
Abs. Propagation Delay Time
35ns
Operating Supply Voltage (typ)
5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
4.5V
Operating Temperature Classification
Commercial
Number Of Bits
8
Lead Free Status / RoHS Status
Supplier Unconfirmed
© 1999 Fairchild Semiconductor Corporation
74F524SC
74F524PC
74F524
8-Bit Registered Comparator
General Description
The 74F524 is an 8-bit bidirectional register with parallel
input and output plus serial input and output progressing
from LSB to MSB. All data inputs, serial and parallel, are
loaded by the rising edge of the input clock. The device
functions are controlled by two control lines (S
cute shift, load, hold and read out.
An 8-bit comparator examines the data stored in the regis-
ters and on the data bus. Three true-HIGH, open-collector
outputs representing “register equal to bus”, “register
greater than bus” and “register less than bus” are provided.
These outputs can be disabled to the OFF state by the use
of Status Enable (SE). A mode control has also been pro-
vided to allow twos complement as well as magnitude com-
pare. Linking inputs are provided for expansion to longer
words.
Ordering Code:
Devices also available in Tape and Reel. Specify by appending the suffix letter “X” to the ordering code.
Logic Symbols
Order Number
Package Number
IEEE/IEC
M20B
N20A
20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide
20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
0
, S
DS009546
1
) to exe-
Features
Connection Diagram
8-Bit bidirectional register with bus-oriented input-output
Independent serial input-output to register
Register bus comparator with “equal to”, “greater than”
and “less than” outputs
Cascadable in groups of eight bits
Open-collector comparator outputs for AND-wired
expansion
Twos complement or magnitude compare
Package Description
April 1988
Revised August 1999
www.fairchildsemi.com

Related parts for 74F524SC

74F524SC Summary of contents

Page 1

... Linking inputs are provided for expansion to longer words. Ordering Code: Order Number Package Number 74F524SC M20B 20-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-013, 0.300 Wide 74F524PC N20A 20-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide Devices also available in Tape and Reel. Specify by appending the suffix letter “ ...

Page 2

Unit Loading/Fan Out Pin Names Description Mode Select Inputs 0 1 C/SI Status Priority or Serial Data Input CP Clock Pulse Input (Active Rising Edge) SE Status Enable Input (Active LOW) M Compare Mode Select Input I/O ...

Page 3

Functional Description The 74F524 contains eight D-type flip-flops connected as a shift register with provision for either parallel or serial load- ing. Parallel data may be read from or loaded into the regis- ters via the data bus I/O –I/O ...

Page 4

Block Diagram Notes: 1. 3-STATE Output 2. Open-Collector Output www.fairchildsemi.com 4 ...

Page 5

Absolute Maximum Ratings Storage Temperature Ambient Temperature under Bias Junction Temperature under Bias V Pin Potential to Ground Pin CC Input Voltage (Note 3) Input Current (Note 5.0 mA Voltage Applied to Output in HIGH State ...

Page 6

AC Electrical Characteristics Symbol Parameter f Maximum Shift Frequency MAX t Propagation Delay PLH t I PHL n t Propagation Delay PLH t I PHL n t Propagation Delay PLH t I PHL n ...

Page 7

AC Operating Requirements Symbol Parameter t (H) Setup Time, HIGH or LOW S t (L) I (H) Hold Time, HIGH or LOW H t (L) I (H) Setup Time, HIGH ...

Page 8

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 8 ...

Page 9

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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