HI-8570, HI-8571
August 2013
ARINC 429
+/- 5V Supply Line Driver
PIN CONFIGURATION
SLP1.5
1
TX0IN
2
TX1IN
3
GND
4
DESCRIPTION
The HI-8570 and HI-8571 are CMOS integrated circuits
designed to directly drive the ARINC 429 bus in an 8-pin
package. Two logic inputs control a differential voltage
between the output pins producing a +10 volt One, a
-10 volt Zero, and a 0 volt Null.
A logic input is provided to control the slope of the
differential output signal. Timing is set by an on-chip
resistor and capacitor and tested to be within ARINC
requirements.
The HI-8570 has 37.5 ohms in series with each line driver
output. The HI-8571 provides the option to bypass part of
the output resistance so external resistance may be
added for lightning protection circuits.
The HI-8570 or the HI-8571 along with the HI-8588 line
receiver offer the smallest options available to get on and
off theARINC 429 bus.
8
V+
7
TXBOUT
6
TXAOUT
5
V-
SUPPLY VOLTAGES
V+ = +5V
V- = -5V
FUNCTION TABLE
TX1IN TX0IN SLP1.5
TXAOUT
0V
-5V
-5V
5V
5V
0V
TXBOUT
0V
5V
5V
-5V
-5V
0V
SLOPE
N/A
10
m
s
1.5
m
s
10
m
s
1.5
m
s
N/A
0
0
0
1
1
1
0
1
1
0
0
1
X
0
1
0
1
X
FEATURES
• Direct ARINC 429 line driver interface
in a small package
• On-chip line driver slope control and
selection by logic input
• Low current 5 volt supplies
• CMOS / TTL logic pins
• Plastic and ceramic package options -
surface mount and DIP
• Thermally enhanced SOIC packages
• Extended Temperature and Burn-in
available
PIN DESCRIPTION TABLE
PIN
1
2
3
4
5
6
7
8
SYMBOL
SLP 1.5
TX0IN
TX1IN
GND
V-
TXAOUT
TXBOUT
V+
FUNCTION
LOGIC INPUT
LOGIC INPUT
LOGIC INPUT
POWER
POWER
OUTPUT
OUTPUT
POWER
DESCRIPTION
CMOS OR TTL, V+ IS OK
CMOS OR TTL
CMOS OR TTL
GROUND
-5 VOLTS
LINE DRIVER TERMINAL A
LINE DRIVER TERMINAL B
+5 VOLTS
(DS8570 Rev. E)
HOLT INTEGRATED CIRCUITS
www.holtic.com
08/13
HOLTIC [ HOLT INTEGRATED CIRCUITS ]
