SN74LS85 datasheet(3/8 Pages) ONSEMI

Part #	SN74LS85

Description	LOW POWER SCHOTTKY

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Manufacturer	ONSEMI [ON Semiconductor]

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L = LOW Level

X = IMMATERIAL

SN74LS85

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3

LOGIC DIAGRAM

OA>B

OA<B

OA=B

(5)

(6)

(7)

A3

B3

A2

B2

A<B

A=B

A>B

A1

B1

A0

B0

(15)

(1)

(13)

(14)

(12)

(11)

(10)

(9)

(2)

(3)

(4)

TRUTH TABLE

COMPARING INPUTS

CASCADING

INPUTS

OUTPUTS

A3,B3

A2,B2

A1,B1

A0,B0

IA>B

IA<B

IA=B

OA>B

OA<B

OA=B

A3>B3

X

H

L

A3<B3

XX

X

XX

L

HL

A3=B3

A2>B2

XX

X

XX

H

LL

A3=B3

A2<B2

XX

X

XX

L

HL

A3=B3

A2=B2

A1>B1

XX

H

LL

A3=B3

A2=B2

A1<B1

XX

L

HL

A3=B3

A2=B2

A1=B1

A0>B0

X

XX

H

LL

A3=B3

A2=B2

A1=B1

A0<B0

X

XX

L

HL

A3=B3

A2=B2

A1=B1

A0=B0

H

LL

H

LL

A3=B3

A2=B2

A1=B1

A0=B0

L

HL

L

HL

A3=B3

A2=B2

A1=B1

A0=B0

X

XH

L

LH

A3=B3

A2=B2

A1=B1

A0=B0

H

HL

L

LL

A3=B3

A2=B2

A1=B1

A0=B0

L

H

L

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