74F148PC Fairchild Semiconductor, 74F148PC Datasheet

IC ENCODER PRIORTY 8/3LINE 16DIP

74F148PC

Manufacturer Part Number
74F148PC
Description
IC ENCODER PRIORTY 8/3LINE 16DIP
Manufacturer
Fairchild Semiconductor
Series
74Fr
Type
Priority Encoderr
Datasheet

Specifications of 74F148PC

Circuit
1 x 8:3
Independent Circuits
1
Current - Output High, Low
1mA, 20mA
Voltage Supply Source
Single Supply
Voltage - Supply
4.5 V ~ 5.5 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Through Hole
Package / Case
16-DIP (0.300", 7.62mm)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
74F148

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
74F148PC
Manufacturer:
PHILIPS
Quantity:
851
© 2000 Fairchild Semiconductor Corporation
74F148SC
74F148SJ
74F148PC
74F148
8-Line to 3-Line Priority Encoder
General Description
The F148 provides three bits of binary coded output repre-
senting the position of the highest order active input, along
with an output indicating the presence of any active input. It
is easily expanded via input and output enables to provide
priority encoding over many bits.
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
M16A
M16D
N16E
16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow
16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide
16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300 Wide
DS009480
Features
Connection Diagram
Truth Table
H
L
X
EI I
H
L
L
L
L
L
L
L
L
L
Encodes eight data lines in priority
Provides 3-bit binary priority code
Input enable capability
Signals when data is present on any input
Cascadable for priority encoding of n bits
LOW Voltage Level
Immaterial
HIGH Voltage Level
H
X
X
X
X
X
X
X
X
L
0
Package Description
I
H
H
X
X
X
X
X
X
X
L
1
I
H
H
H
X
X
X
X
X
X
L
2
Inputs
I
H
H
H
H
X
X
X
X
X
L
3
I
H
H
H
H
H
X
X
X
X
L
4
I
H
H
H
H
H
H
X
X
X
L
5
I
X
H
X
H
H
H
H
H
H
April 1988
Revised September 2000
L
6
I
X
H
H
H
H
H
H
H
H
L
7
GS A
www.fairchildsemi.com
H
H
L
L
L
L
L
L
L
L
H
H
H
H
H
H
L
L
L
L
Outputs
0
A
H
H
H
H
H
H
L
L
L
L
1
A
H
H
H
H
H
H
L
L
L
L
2
EO
H
H
H
H
H
H
H
H
H
L

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74F148PC Summary of contents

Page 1

... Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow 74F148SJ M16D 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide 74F148PC N16E 16-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 “X” to the ordering code. ...

Page 2

Unit Loading/Fan Out Pin Names I Priority Input (Active LOW –I Priority Inputs (Active LOW Enable Input (Active LOW) EO Enable Output (Active LOW) GS Group Signal Output (Active LOW) A –A Address Outputs (Active ...

Page 3

Absolute Maximum Ratings Storage Temperature Ambient Temperature under Bias Junction Temperature under Bias V Pin Potential to Ground Pin CC Input Voltage (Note 2) Input Current (Note 5.0 mA Voltage Applied to Output in HIGH State ...

Page 4

AC Electrical Characteristics Symbol Parameter t Propagation Delay PLH PHL Propagation Delay PLH PHL n t Propagation Delay PLH PHL n t Propagation Delay PLH ...

Page 5

Physical Dimensions inches (millimeters) unless otherwise noted 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150 Narrow Package Number M16A 5 www.fairchildsemi.com ...

Page 6

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-Lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm Wide www.fairchildsemi.com Package Number M16D 6 ...

Page 7

Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 16-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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