HI-8448PQTF datasheet(2/9 Pages) HOLTIC

Part #	HI-8448PQTF

Description	Quad / Octal ARINC 429 Line Receivers

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Manufacturer	HOLTIC [Holt Integrated Circuits]

Direct Link	http://www.holtic.com

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2 / 9 page

HI-8444, HI-8445, HI-8448

SYMBOL

FUNCTION

DESCRIPTION

1

IN1 A

ARINC input

Receiver 1 positive input

2

IN1 B

ARINC input

3

IN2 A

4

IN2 B

5

TESTA

Logic input

Test input. (Not available on HI-8445)

6

TESTB

7

IN3 A

9

IN4 A

10

IN4 B

11

OUT4 B

12

OUT4 A

13

OUT3 B

14

OUT3 A

15

VSS

Power

Ground

16

VDD

Power

Positive supply voltage 3.3V or 5.0 V

Receiver 1 negative input

ARINC input

Receiver 2 positive input

ARINC input

Receiver 2 negative input

Logic input

Test input. (Not available on HI-8445)

ARINC input

Receiver 3 positive input

8

IN3 B

ARINC input

Receiver 3 negative input

ARINC input

Receiver 4 positive input

ARINC input

Receiver 4 negative input

Logic output

Receiver 4 "ZERO" output

Logic output

Receiver 4 "ONE" output

Logic output

Receiver 3 "ZERO" output

Logic output

Receiver 3 "ONE" output

17

OUT2 B

Logic output

Receiver 2 "ZERO" output

18

OUT2 A

Logic output

Receiver 2 "ONE" output

19

OUT1 B

Logic output

Receiver 1 "ZERO" output

20

OUT1 A

Logic output

Receiver 1 "ONE" output

PIN DESCRIPTIONS (HI-8444, HI-8445)

BLOCK DIAGRAMS

IN1 A

IN1 B

IN2 A

IN2 B

IN3 A

IN3 B

IN4 A

IN4 B

TESTA

TESTB

OUT1 A

OUT1 B

OUT2 A

OUT3 A

OUT3 B

OUT4 A

OUT4 B

OUT2 B

IN1 A

IN1 B

IN2 A

IN2 B

IN3 A

IN3 B

IN4 A

IN4 B

OUT1 A

OUT1 B

OUT2 A

OUT3 A

OUT3 B

OUT4 A

OUT4 B

OUT2 B

HI-8444

HI-8445

IN4 AX

OUT1 AX

OUT4 A

OUT4 B

IN1 AX

IN1 BX

IN2 AX

IN2 BX

IN3 AX

IN3 BX

IN4 BX

TESTA(X)

TESTB(X)

OUT1 BX

OUT2 AX

OUT3 AX

OUT3 BX

OUT4 AX

OUT4 BX

OUT2 BX

TESTA(Y)

TESTB(Y)

IN4 AY

IN1 AY

IN1 BY

IN2 AY

IN2 BY

IN3 AY

IN3 BY

IN4 BY

OUT1 AY

OUT1 BY

OUT2 AY

OUT3 AY

OUT3 BY

OUT4 AY

OUT4 BY

OUT2 BY

HI-8448

HOLT INTEGRATED CIRCUITS

2

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