M74HC148B1R STMicroelectronics, M74HC148B1R Datasheet

M74HC148B1R

Manufacturer Part Number

M74HC148B1R

Description

IC PRIORITY ENCODER 8:3 16-DIP

Manufacturer

STMicroelectronics

Series

74HCr

Type

Priority Encoderr

Datasheets

1.M74HC148B1R.pdf (11 pages)

2.M74HC148B1R.pdf (5 pages)

Specifications of M74HC148B1R

Circuit

1 x 8:3

Independent Circuits

Current - Output High, Low

5.2mA, 5.2mA

Voltage Supply Source

Single Supply

Voltage - Supply

2 V ~ 6 V

Operating Temperature

-55°C ~ 125°C

Mounting Type

Through Hole

Package / Case

16-DIP (0.300", 7.62mm)

Product

Decoders, Encoders, Multiplexers & Demultiplexers

Logic Family

74HC

Number Of Lines (input / Output)

8.0 / 3.0

Propagation Delay Time

150 ns at 2 V, 30 ns at 4.5 V, 26 ns at 6 V

Supply Voltage (max)

6 V

Supply Voltage (min)

2 V

Maximum Operating Temperature

+ 85 C

Minimum Operating Temperature

- 40 C

Mounting Style

Through Hole

Number Of Input Lines

8.0

Number Of Output Lines

3.0

Power Dissipation

500 mW

Circuit Type

Silicon Gate

Current, Leakage, Input

±0.1 μA (Max.)

Current, Quiescent Supply

4 uA (Max.)

Current, Supply

80 μA

Input Fall Time

0 to 1000 ns @ 2 V, 0 to 500 ns @ 4.5 V, 0 to 400 ns @ 6 V

Input Rise Time

0 to 1000 ns @ 2 V, 0 to 500 ns @ 4.5 V, 0 to 400 ns @ 6 V

Logic Function

Priority Encoder

Logic Type

CMOS

Number Of Circuits

Octal

Package Type

DIP-16

Special Features

8 to 3 Line, High Speed

Temperature, Operating, Maximum

125 °C

Temperature, Operating, Minimum

-55 °C

Temperature, Operating, Range

-55 to +125 °C

Voltage, Dc Input

-0.5 to VCC + 0.5 V

Voltage, Dc Output

-0.5 toCC + 0.5

Voltage, Supply

2 to 6 V

No. Of Outputs

Supply Voltage Range

2V To 6V

Logic Case Style

DIP

No. Of Pins

Operating Temperature Range

-55Â°C To +125Â°C

Family Type

Rohs Compliant

Yes

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Other names

497-1775-5

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

M74HC148B1R

Manufacturer:

MOT

Quantity:

194

Current page: 1 of 11
Download datasheet (334Kb)

DESCRIPTION

The M74HC148 is an high speed CMOS 8 TO 3

LINE PRIORITY ENCODER fabricated with

silicon gate C

The M74HC148 encodes eight data lines to

three-line

circuitry (enable input EI and enable output EO)

PIN CONNECTION AND IEC LOGIC SYMBOLS

July 2001

HIGH SPEED:

LOW POWER DISSIPATION:

HIGH NOISE IMMUNITY:

SYMMETRICAL OUTPUT IMPEDANCE:

BALANCED PROPAGATION DELAYS:

WIDE OPERATING VOLTAGE RANGE:

PIN AND FUNCTION COMPATIBLE WITH

74 SERIES 148

PLH

NIH

= 16ns (TYP.) at V

= 4 A(MAX.) at T

| = I

(OPR) = 2V to 6V

= V

PHL

(4-2-1)

NIL

= 4mA (MIN)

MOS technology.

= 28 % V

binary

=25°C

(MIN.)

= 6V

(octal).

Cascading

8 TO 3 LINE PRIORITY ENCODER

ORDER CODES

has been provided to allow octal expansion

without the need for external circuitry. Data inputs

are active at the low logic level.

All inputs are equipped with protection circuits

against static discharge and transient excess

voltage.

PACKAGE

TSSOP

SOP

DIP

M74HC148M1R

M74HC148B1R

TUBE

SOP

M74HC148

M74HC148RM13TR

M74HC148TTR

T & R

TSSOP

1/11

Related parts for M74HC148B1R

M74HC148B1R Summary of contents

Page 1

... Data inputs are active at the low logic level. All inputs are equipped with protection circuits (octal). Cascading against static discharge and transient excess voltage. M74HC148 DIP SOP TUBE T & R M74HC148B1R M74HC148M1R M74HC148RM13TR M74HC148TTR TSSOP 1/11 ...

Page 2

M74HC148 INPUT AND OUTPUT EQUIVALENT CIRCUIT TRUTH TABLE ...

Page 3

ABSOLUTE MAXIMUM RATINGS Symbol V Supply Voltage Input Voltage Output Voltage Input Diode Current Output Diode Current Output Current ...

Page 4

M74HC148 DC SPECIFICATIONS Symbol Parameter V V High Level Input IH Voltage V Low Level Input IL Voltage V High Level Output OH Voltage V Low Level Output OL Voltage I Input Leakage I Current I Quiescent Supply CC Current ...

Page 5

AC ELECTRICAL CHARACTERISTICS (C Symbol Parameter Output Transition TLH THL Time t t Propagation Delay PLH PHL Time (In - A0, A1, A2 Propagation Delay PLH PHL Time (In - EO, GS Propagation ...

Page 6

M74HC148 TEST CIRCUIT C = 50pF or equivalent (includes jig and probe capacitance pulse generator (typically OUT WAVEFORM 1: PROPAGATION DELAY TIMES ,FOR INVERTING AND NON INVERTING OUTPUTS (f=1MHz; 50% duty cycle) ...

Page 7

TYPICAL APPLICATION M74HC148 7/11 ...

Page 8

M74HC148 DIM. MIN. a1 0. 8/11 Plastic DIP-16 (0.25) MECHANICAL DATA mm. TYP MAX. 1.65 0.5 0.25 20 8.5 2.54 17.78 7.1 5.1 3.3 1.27 inch MIN. TYP. ...

Page 9

SO-16 MECHANICAL DATA mm. DIM. MIN 0 0. 9 3.8 G 4 TYP MAX. MIN. 1.75 0.2 0.003 1.65 0.46 0.013 0.25 ...

Page 10

M74HC148 DIM. MIN 0.05 A2 0.8 b 0.19 c 0.09 D 4.9 E 6 0° PIN 1 IDENTIFICATION 1 10/11 TSSOP16 MECHANICAL DATA mm. TYP MAX. 1.2 0.15 ...

Page 11

... No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied ...

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