HI-8444_16 Datasheet, PDF(1/9 Page) Holt Integrated Circuits

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HI-8444_16 Datasheet, PDF (1/9 Pages) Holt Integrated Circuits – ARINC 429 Line Receivers

December 2016

HI-8444, HI-8445, HI-8448

Quad / Octal

ARINC 429 Line Receivers

DESCRIPTION

The HI-8444 and HI-8445 are quad ARINC 429 line

receiver ICs available in a 20-pin TSSOP package. The HI-

8448 contains 8 independent ARINC 429 line receivers.

The technology is analog / digital CMOS. The device is

designed to operate from either a 5V or 3.3V supply. Each

receiver channel translates incoming ARINC 429 data bus

signals to a pair of TTL / CMOS outputs.

The optional HI-8444-10, HI-8445-10 and HI-8448-10 are

designed to be used with an external 15 Kohm series

resistor. The â-10â devices meet the lightning protection

requirements of DO-160G, level 3, waveforms 3, 4, 5A, and

5B.

The TESTA and TESTB inputs bypass the analog inputs for

testing purposes. They force the receiver outputs to the

specified ZERO, ONE or NULL state. The ARINC inputs

are ignored when the device is in the test mode.

The HI-8445 is identical to the HI-8444 except the TESTA

and TESTB pins are not available.

FEATURES

! Direct ARINC 429 quad or octal line receivers in small

footprint packages

! 3.3V or 5.0V single supply operation

! Test inputs bypass analog inputs and force digital

outputs to a one, zero, or null state

! ARINC inputs are internally lightning protected per DO-

160G level 3 (-10 configuration only)

! Hi-Rel processing options available

FUNCTION TABLE

ARINC INPUTS TESTA TESTB OUTA OUTB

INA - INB

-2.5 to +2.5 V 0

< -6.5 V

> +6.5 V

PIN CONFIGURATIONS

(See page 6 for additional pin configurations)

IN1 A 1

IN1 B 2

IN2 A 3

IN2 B 4

TESTA (8444 only) 5

TESTB (8444 only) 6

IN3 A 7

IN3 B 8

IN4 A 9

IN4 B 10

HI-8444PS

HI-8444PS-10

HI-8445PS

HI-8445PS-10

Quad

Receiver

20 OUT1 A

19 OUT1 B

18 OUT2 A

17 OUT2 B

16 VDD

15 VSS

14 OUT3 A

13 OUT3 B

12 OUT4 A

11 OUT4 B

20 Pin Plastic TSSOP package

IN1 AX 1

IN1 BX 2

IN1 AY 3

IN1 BY 4

IN2 AX 5

IN2 BX 6

IN2 AY 7

IN2 BY 8

TESTA (X) 9

TESTB (X) 10

TESTA (Y) 11

TESTB (Y) 12

IN3 AX 13

IN3 BX 14

IN3 AY 15

IN3 BY 16

IN4 AX 17

IN4 BX 18

IN4 AY 19

HI-8448PS

HI-8448PS-10

Octal

Receiver

38 OUT1 AX

37 OUT1 BX

36 OUT1 AY

35 OUT1 BY

34 OUT2AX

33 OUT2 BX

32 OUT2 AY

31 OUT2 BY

30 VDD

29 VSS

28 OUT3 AX

27 OUT3 BX

26 OUT3 AY

25 OUT3 BY

24 OUT4 AX

23 OUT4 BX

22 OUT4 AY

21 OUT4 BY

20 IN4 BY

38 Pin Plastic TSSOP package

(DS8444 Rev. K)

HOLT INTEGRATED CIRCUITS

www.holtic.com

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