www.DataSheet4U.com
Device Engineering Incorporated
385 East Alamo Drive Chandler, AZ 85225 Phone: (480) 303-0822 Fax: (480) 303-0824 E-mail:
[email protected]
DEI1073, DEI1074, DEI1075 ARINC 429 LINE DRIVER WITH RATE SELECT AND TRI-STATE
FEATURES • TTL/CMOS TO ARINC 429 Line Driver. • Rate control input set Hi (100KBS) or Lo (12.5KBS) speed slew rates. • Operates from ±9.5V to ±16.5V power supply. • Drives full ARINC load. • Output resistor options: 0, 10 or 37.5 Ohms. • Tristate Outputs • Thermally enhanced 8 lead SOIC package. • Outputs Short Circuit Tolerant
GENERAL DESCRIPTION
The DEI1073 family of 8 pin BiCMOS integrated circuits are line drivers designed to directly drive the ARINC 429 avionics serial digital data bus. The device converts TTL/CMOS serial input data to the tri-level RZ bipolar differential modulation format of the ARINC bus. The outputs are tri-state capable. A TTL/CMOS control input selects the output slew rate for HI (100KBS) and LOW (12.5KBS) speed operation. No external timing capacitors are required. The DEI1073 has internal 37.5 Ohm output resistors, the DEI1074 has 10 Ohm resistors, and the DEI1075 has none. The 10 and 0 Ohm options require external series resistors which are typically used to implement a transient voltage protection network. Table 1 PIN DESCRIPTION
PIN 1
HI/LO TTLIN0 TTLIN1 GND
1 8
NAME HI/LO TTLIN0 TTLIN1 GND V429OUTA
DESCRIPTION LOGIC INPUT. Slew rate control. 1 = Hi speed. 0 = Low speed. LOGIC INPUT. Serial digital data input 0. LOGIC INPUT. Serial digital data input 1. POWER INPUT. Ground. POWER INPUT. –9.5 to –16.5 VDC 429 OUTPUT. ARINC 429 format serial digital data output A. 429 OUTPUT. ARINC 429 format serial digital data output B. POWER INPUT. +9.5 to +16.5 VDC.
V+ 429OUTB 429OUTA V-
2 3 4 5 6
2
7
3
6
4
5
Note: Heatsink pad is electrically Isolated.
7 8
429OUTB V+
©2004 Device Engineering Inc
Page 1 of 8
DS-MW-01073-01 Rev C 05/31/2005
www.DataSheet4U.com
FUNCTIONAL DESCRIPTION
HI/LO TTLIN1 TTLIN0
INPUT LOGIC and LEVEL SHIFT EDGE SHAPING OUTPUT DRIVERS
429OUTA
429OUTB
TRI-STATE
Block Diagram
Table 2 Speed Control Function Table
HI/LO 0 1 OUTPUT TRANSITION TIME 10uS (12.5 KBS data) 1.5uS (100KBS data)
Table 3 Transmit Data Function Table
TTLIN1 0 0 1 1 TTLIN0 0 1 0 1 429OUTA 0V -5V 5V Hi-Z 429OUTB 0V 5V -5V Hi-Z NOTES Null output Zero output One output Tri-State output
TTLIN1
TTLIN0
+5
429OUTA
-5
50%
Tskew +5
429OUTB
50% -5
+10
Tfall 90% 10% 10% Trise 90% Trise Tfall
Differential 429OUT (A-B)
-5
LINE DRIVER WAVEFORMS
©2004 Device Engineering Inc
Page 2 of 8
DS-MW-01073-01 Rev C 05/31/2005
www.DataSheet4U.com
ELECTRICAL DESCRIPTION
Table 4 Absolute Maximum Ratings
PARAMETER Voltages referenced to Ground
V+ Supply Voltage V1- Supply Voltage V+, V- Supply Slew Rate Storage Temperature Input Voltage TTLIN and HI/LO Inputs -65 Gnd – 0.3 ‘V-‘ – 0.3
MIN
-0.3
MAX
+20 -20 +/-100 +150 ‘V+’ + 0.3 ‘V+’ + 0.3
UNITS
V V V/uS °C V V
0.3
429OUT Outputs
Power Dis.