HI-8585_06 Datasheet, PDF (1/8 Pages) Holt Integrated Circuits – ARINC 429 LINE DRIVER

August 2006
HI-8585, HI-8586
ARINC 429 LINE DRIVER
DESCRIPTION
The HI-8585 and HI-8586 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.
The CMOS/TTL control inputs are translated to ARINC
specified amplitudes using on board zeners. A logic input
is provided to control the slope of the differential output
signal. Timing is set by on-chip resistor and capacitor and
tested to be within ARINC requirements.
The HI-8585 has 37.5 ohms in series with each line driver
output. The HI-8586 provides the option to bypass part of
the output resistance so that external series protection
circuits can add their resistances.
The HI-8585 or the HI-8586 along with the HI-8588 line
receiver offer the smallest options available to get on and
off the ARINC bus.
FEATURES
! Direct ARINC 429 line driver interface
in a small package
! On-chip zener to set output levels
! On-chip line driver slope control and
selection by logic input
! Low current 12 to 15 volt supplies
! CMOS / TTL logic pins
! Plastic and ceramic package options -
surface mount and DIP
! Thermally enhanced SOIC packages
! Mil processing available
PIN CONFIGURATION
SLP1.5 1
TX0IN 2
TX1IN 3
GND 4
8 V+
7 TXBOUT
6 TXAOUT
5 V-
SUPPLY VOLTAGES
V+ = 12V to 15V
V- = -12V to -15V
FUNCTION TABLE
TX1IN TX0IN SLP1.5
0
0
X
0
1
0
0
1
1
1
0
0
1
0
1
1
1
X
TXAOUT
0V
-5V
-5V
5V
5V
0V
TXBOUT
0V
5V
5V
-5V
-5V
0V
SLOPE
N/A
10ms
1.5ms
10ms
1.5ms
N/A
PIN DESCRIPTION TABLE
PIN SYMBOL
1 SLP 1.5
2 TX0IN
3 TX1IN
4 GND
5 V-
6 TXAOUT
7 TXBOUT
8 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
-12 TO -15 VOLTS
LINE DRIVER TERMINAL A
LINE DRIVER TERMINAL B
+12 TO +15 VOLTS
(DS8585 Rev. J)
HOLT INTEGRATED CIRCUITS
www.holtic.com
08/06