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Line Driver. BD429 Datasheet

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Line Driver. BD429 Datasheet






BD429 Driver. Datasheet pdf. Equivalent




BD429 Driver. Datasheet pdf. Equivalent





Part

BD429

Description

Line Driver

Manufacture

DEI

Datasheet
Download BD429 Datasheet


DEI BD429

BD429; Device Engineering Incorporated 430 S. R ockford Dr. Tempe, AZ 85281 Phone: (480 ) 303-0822 Fax: (480) 303-0824 E-mail: admin@deiaz.com BD429 ARINC 429/RS-422 Line Driver Integrated Circuit www.D ataSheet4U.com Features: • • • • • • • • • • • ARIN C 429 Line Driver for HI speed (100 kHz ) and LOW speed (12.5 kHz) data rates P in for Pin replacement part for industry s.


DEI BD429

tandard ARINC 429 Line Drivers Available in a 16 Pin SOIC (WB), 16 Pin CERDIP a nd 28L PLCC Low EMI RS-422 line driver mode for data rates up to 100 kHz Adjus table slew rates via two external capac itors Inputs are TTL and CMOS compatibl e Low quiescent power of 125mW (typical ) Programmable output differential rang e via VREF pin Outputs are fused for fa ilsafe overvoltage.


DEI BD429

protection Drives full ARINC load of 40 0Ω and 30,000pF -55°C to +125°C ope rating temperature range 100% Final Tes ting General Description: The BD429 AR INC Line Driver Circuit is a bipolar mo nolithic IC designed to meet the requir ements of several general aviation seri al data bus standards. These include th e differential bipolar RZ types such as ARINC 429, ARINC 571,.



Part

BD429

Description

Line Driver

Manufacture

DEI

Datasheet
Download BD429 Datasheet




 BD429
Device
Engineering
Incorporated
430 S. Rockford Dr.
Tempe, AZ 85281
Phone: (480) 303-0822
Fax: (480) 303-0824
E-mail: admin@deiaz.com
www.DataSheet4U.com
BD429
ARINC 429/RS-422 Line Driver
Integrated Circuit
Features:
ARINC 429 Line Driver for HI speed (100 kHz) and LOW speed (12.5 kHz) data rates
Pin for Pin replacement part for industry standard ARINC 429 Line Drivers
Available in a 16 Pin SOIC (WB), 16 Pin CERDIP and 28L PLCC
Low EMI RS-422 line driver mode for data rates up to 100 kHz
Adjustable slew rates via two external capacitors
Inputs are TTL and CMOS compatible
Low quiescent power of 125mW (typical)
Programmable output differential range via VREF pin
Outputs are fused for failsafe overvoltage protection
Drives full ARINC load of 400and 30,000pF
-55°C to +125°C operating temperature range
100% Final Testing
General Description:
The BD429 ARINC Line Driver Circuit is a bipolar
monolithic IC designed to meet the requirements of
several general aviation serial data bus standards.
These include the differential bipolar RZ types such
as ARINC 429, ARINC 571, and ARINC 575, as well
as the differential NRZ types such as the RS-422
standard.
Table 1: Product Matrix Table
Product Matrix Table
Part Number Package Type
# of
Pins
BD429
CERDIP
16
BD429A
SOIC WB
16
BD429B
PLCC
28
© 1999 Device Engineering Inc.
430 S. Rockford Tempe, AZ 85281
1 of 11
BD429 Rev. B
March 24, 2000





 BD429
Functional Description:
Modes: The BD429 operates in either a 429 mode or a 422 mode as controlled by the 429/422´ pin.
429 Mode: In 429 mode, the serial data is presented on the DATA(A) and DATA(B) inputs in the dual rail
format defined in the MARK 33 Digital Information Transfer System – ARINC Specification 429-10. The
driver is enabled by the SYNC and CLOCK inputs. The output voltage level is programmed by the VREF
input and is normally tied to +5VDC along with V1 to produce output levels of +5 volts, 0 volts, and –5
volts on each output for ±10 volts differential outputs. *See figure 2.
422 Mode: In 422 mode, the serial data is presented on DATA(A) input. The driver is enabled by the
SYNC and CLOCK inputs. The outputs swings between 0 volts and +5 volts if VREF is at +5VDC. *See
www.DataSheet4U.cofmigure 3.
Output Resistance: The driver output resistance is 75±20% at room temperature; 37.5on each out-
put. The outputs are also fused for failsafe protection against shorts to aircraft power. The output slew
rate is controlled by external timing capacitors on CA and CB. Typical values are 75pF for 100 KHz data
and 500pF for 12.5 KHz data.
Pin Name
VREF
Table 2: Pin Descriptions
Description
Analog Input. The voltage on VREF sets the output voltage levels on AOUT and BOUT. The output
logic levels swing between +VREF, 0 volts, and –VREF volts.
NC No Connect
SYNC
Logic input. Logic 0 forces outputs to NULL state. Logic 1 enables data transmission.
DATA(A)
DATA(B)
CA
CB
AOUT
BOUT
Logic inputs. These signals contain the Serial Data to be transmitted on the ARINC 429 data bus.
Refer to Figures 2 and 3.
Analog Nodes. External timing capacitors are tied from these points to ground to establish the out-
put signal slew rate. Typical CA = CB = 75pF for 100 kHz data and CA = CB = 500pF for 12.5 kHz
data. *
Outputs. These are the line driver outputs which are connected to the aircraft serial data bus.
-V Negative Supply Input. –15VDC nominal.
GND
Ground.
+V Positive Supply Input. +15VDC nominal.
CLOCK Logic input. Logic 0 forces outputs to NULL state. Logic 1 enables data transmission.
429/422'
Logic Input. Mode control for ARINC 429 and RS-422 modes. An internal 10Kpull up resistor
keeps the chip in ARINC 429 mode when there is no external connection. This creates a default
logic 1, enabling the ARINC 429 mode. A forced logic 0 enables the RS-422 mode.
V1 Logic Supply Input. +5VDC nominal.
*CA and CB pin voltages swing between ±5 volts. Any electronic switching of the capacitor on the pins must not inhibit the full voltage swings.
© 1999 Device Engineering Inc.
430 S. Rockford Tempe, AZ 85281
2 of 11
BD429 Rev. B
March 24, 2000





 BD429
429/422'
NOTE 1
SYNC
NOTE 2
CLOCK
NOTE 2
Table 3: Truth Table
DATA(A) DATA(B)
NOTE 2
NOTE 2
AOUT
BOUT
COMMENTS
4
2
9
M
O
D
E
4
2
2
www.DataSheet4U.cMOom
D
E
H
H
H
H
H
H
L
L
L
L
L
X
H
H
H
H
L
X
H
H
X X X 0 0 NULL
L X X 0 0 NULL
H L L 0 0 NULL
H H H 0 0 NULL
H
H
L
+VREF
-VREF
LOGIC 1
H
L
H
-VREF
+VREF
LOGIC 0
X X X +VREF 0
NULL
L X X +VREF 0 NULL
H
L
X
0
+VREF
LOGIC 0
H
H
X +VREF 0
LOGIC 1
NOTES:
'1. The 429/422 pin is internally pulled up to V1 through a 10kresistor. So, if no external connection is made to this pin, it will force the
chip into the 429 mode.
2. X = Don’t care.
Table 4: Absolute Maximum Ratings
PARAMETER
SYMBOL
RATING
UNITS
Voltage between pins +V and –V
40 V
V1 Maximum Voltage
VREF Maximum Voltage
DATA(A) Max Input Voltage
DATA(B) Max Input Voltage
Output Short Circuit Duration
V1
VREF
VDATA(A)
VDATA(B)
7
6
(GND-0.3V) to
(V1 + 0.3V)
Note1
V
V
V
Output Over-voltage Protection
Note2
Lead Soldering Temperature (10 sec duration)
Storage Temperature
Power Dissipation
TSLD
280
TSTG
-65 to +150
See Power Dissipation Table
oC
oC
Notes.
1. One output at a time can be shorted to ground indefinitely.
2. Both outputs are fused at between 0.5 Amp DC and 1.0 Amp DC to prevent an over-voltage fault from
coupling onto the system power bus.
Table 5: Operating Range
PARAMETER
SYMBOL
Positive Supply Voltage
+V
Negative Supply Voltage
-V
V1 V1
VREF (For ARINC 429)
VREF
VREF (For other applications)
VREF
Operating Temperature
TA
Max Operating Junction Temperature
TJ
MIN
+11.4
-11.4
+4.75
+4.75
+3
-40
TYP
+5
+5
MAX
16.5
-16.5
+5.25
+5.25
+6
+85
+175
UNITS
VDC
VDC
VDC
VDC
VDC
°C
°C
© 1999 Device Engineering Inc.
430 S. Rockford Tempe, AZ 85281
3 of 11
BD429 Rev. B
March 24, 2000



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