HI-8500
ARINC 429 Line Driver Family
with Tri-State Option
July 2017
FEATURES
DESCRIPTION
?
0, 10 and 37.5 Ohmoutputs
The HI-8500 family is a full-featuredARINC 429 Line Driver
providing three choices of output resistance and a tri-state
option, which allows the outputs to be put in a high-
impedance stateeven when the device ispowered off.
?Tri-stateoutputs are Hi-Zwith no power applied
?Wide power-supply range
Like Holt’s industry-standard HI-8585 and HI-8586 ARINC
429 line drivers, the HI-8500 includes digital slew-rate
selection to support high-speed (100kb/s) and low-speed
(12.5kb/s) data rates.
?
8kV ESD tolerance
?Digital slew-rate control
?
Drop-in alternative toDEI1070A-DEI1075A,
The part is offered in a variety of small footprint packages
including 5mm x 5mm 20-lead plastic QFN package and
traditional 8-pin SOIC package. Ceramic DIPs are also
available.
DEI1170A, DEI1171A
?DO-254 certifiable
Inputs are compatible with either 5V or 3.3V logic. Internal
pull-up/down resistors are available on HI-8507 for each
digital input. The resistors are brought out to pins, which
may be externally grounded to hold the ARINC bus in the
null-sate during system power-up, or connected to logic
power to hold the outputs tri-state. This feature is of benefit
when interfacing to field-programmable logic as it defines a
known-state during FPGA initialization, avoiding transient
bus noise atpower-on.
PIN CONFIGURATIONS
SLP1.5 - 1
TXIN0 - 2
TXIN1 - 3
GND - 4
8 - V+
7 - TXBn
6 - TXAn
5 - V-
The HI-8500 family offers a pin-for-pin drop-in replacement
for the DEI1070A-DEI1075A, DEI1170A and DEI1171A.
See table 1 forexactpart number crossreferences.
HI-8500PSx, HI-8501PSx, HI-8502PSx
HI-8503PSx, HI-8504PSx & HI-8505PSx
8 - PIN Plastic Narrow Body ESOIC
TSEN -
1
2
3
4
15 - SLP1.5
14 - RSLP (*)
13 -
-
-
V- -
12 - V+
TXA37 - 5
11 - TXB37
HI-8506PCx, HI-8507PCx
20-pin 5mm x 5mm Chip-Scale Package
(*) Not connected on HI-8506
HOLT INTEGRATED CIRCUITS
www.holtic.com
(DS8500 Rev. B)
07/17