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HI-8448 fiches techniques PDF

Holt Integrated Circuits - (HI-8444 - HI-8448) Quad / Octal ARINC 429 Line Receivers

Numéro de référence HI-8448
Description (HI-8444 - HI-8448) Quad / Octal ARINC 429 Line Receivers
Fabricant Holt Integrated Circuits 
Logo Holt Integrated Circuits 





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HI-8448 fiche technique
www.DataSheet4U.com
January 2003
HI-8444, HI-8445, HI-8448
Quad / Octal ARINC 429 Line Receivers
DESCRIPTION
PIN CONFIGURATIONS
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 10 Kohm series
resistor. The “-10” devices meet the lightning protection
requirements of DO-160C/D level 3, waveforms 3, 4, and
5A.
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.
IN1 A 1
20 OUT1 A
IN1 B 2
19 OUT1 B
IN2 A 3 HI-8444PS 18 OUT2 A
IN2 B
4
HI-8444PS-10
&
17 OUT2 B
TESTA (8444 only) 5 HI-8445PS 16 VDD
TESTB (8444 only) 6 HI-8445PS-10 15 VSS
IN3 A 7
Quad
Receiver
14 OUT3 A
IN3 B 8
13 OUT3 B
IN4 A 9
12 OUT4 A
IN4 B 10
11 OUT4 B
The HI-8445 is identical to the HI-8444 except the TESTA
and TESTB pins are not available.
20 Pin Plastic TSSOP package
FEATURES
DataSheet4U.com
! Direct ARINC 429 quad or octal line receivers in small
footprint packages
DataShee
! 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-
160C/D level 3 (-10 configuration only)
! Military processing options available
FUNCTION TABLE
ARINC INPUTS TESTA TESTB OUTA OUTB
INA - INB
-2.5 to +2.5 V 0 0 0 0
< -6.5 V
0 0 01
> +6.5 V
0 0 10
X 0 1 01
X 1 0 10
X 1 1 00
DataSheet4U.com
IN2 BX - 1
IN2 AY - 2
IN2 BY - 3
N/C - 4
TESTA(X) - 5
TESTB(X) - 6
TESTA(Y) - 7
TESTB(Y) - 8
IN3 AX - 9
IN3 BX - 10
IN3 AY - 11
HI-8448PQ
HI-8448PQ-10
Octal
Receiver
33 - OUT2 BX
32 - OUT2 AY
31 - OUT2 BY
30 - N/C
29 - VDD
28 - N/C
27 - VSS
26 - N/C
25 - OUT3 AX
24 - OUT3 BX
23 - OUT3 AY
44-Pin Plastic Quad Flat Pack (PQFP)
(DS8444 Rev. C)
DataSheet4 U.com
HOLT INTEGRATED CIRCUITS
www.holtic.com
01/03

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