MM74HC148N Fairchild Semiconductor, MM74HC148N Datasheet

MM74HC148N

Manufacturer Part Number

MM74HC148N

Description

Manufacturer

Fairchild Semiconductor

Datasheet

1.MM74HC148N.pdf (7 pages)

Specifications of MM74HC148N

Lead Free Status / RoHS Status

Not Compliant

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MM74HC148M

MM74HC148N

MM74HC148

8-3 Line Priority Encoder

General Description

The MM74HC148 priority encoder utilizes advanced sili-

con-gate CMOS technology. It has the high noise immunity

and low power consumption typical of CMOS circuits, as

well as the speeds and output drive similar to LB-TTL.

This priority encoder accepts 8 input request lines 0–7 and

outputs 3 lines A0–A2. The priority encoding ensures that

only the highest order data line is encoded. Cascading cir-

cuitry (enable input EI and enable output EO) has been

provided to allow octal expansion without the need for

external circuitry. All data inputs and outputs are active at

the low logic level.

All inputs are protected from damage due to static dis-

charge by internal diode clamps to V

Ordering Code:

Connection Diagram

Order Number

Package Number

M16A

N16E

and ground.

16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow

16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide

DS009390

Features

Truth Table

Typical propagation delay: 13 ns

Wide supply voltage range: 2V–6V

LOW

Irrelevant

HIGH

X X X X X X X X

H H H H H H H H

X X X X X X X L

X X X X X X L H

X X X X X L H H

X X X X L H H H

X X X L H H H H

X X L H H H H H

X L H H H H H H

0 1 2 3 4 5 6 7 A2 A1 A0 GS EO

L H H H H H H H

Package Description

Inputs

October 1987

Revised September 2001

www.fairchildsemi.com

Outputs

Related parts for MM74HC148N

MM74HC148N Summary of contents

Page 1

... CC Ordering Code: Order Number Package Number MM74HC148M M16A 16-Lead Small Outline Integrated Circuit (SOIC), JEDEC MS-012, 0.150" Narrow MM74HC148N N16E 16-Lead Plastic Dual-In-Line Package (PDIP), JEDEC MS-001, 0.300" Wide Connection Diagram © 2001 Fairchild Semiconductor Corporation Features Typical propagation delay Wide supply voltage range: 2V–6V ...

Page 2

Schematic Diagram www.fairchildsemi.com 2 ...

Page 3

Logic Diagram 3 www.fairchildsemi.com ...

Page 4

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

Page 5

AC Electrical Characteristics Symbol Parameter Maximum Propagation Delay, PHL PLH Any Input to Any Output AC Electrical Characteristics = 2.0V to 6.0V pF (unless otherwise specified) CC ...

Page 6

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