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5-178
March 1997
HS-3182
ARINC 429 Bus Interface Line Driver Circuit
Features
TTL and CMOS Compatible Inputs
Adjustable Rise and Fall Times via Two External
Capacitors
Programmable Output Differential Voltage via V
REF
Input
Operates at Data Rates Up to 100 Kilobits/Sec
Output Short Circuit Proof and Contains Over-Voltage
Protection
Outputs are Inhibited (0 Volts) If DATA (A) and DATA
(B) Inputs are Both in the “Logic One” State
DATA (A) and DATA (B) Signals are “AND’d” with Clock
and Sync Signals
Full Military Temperature Range
Ordering Information
Description
The HS-3182 is a monolithic dielectrically isolated bipolar differ-
ential line driver designed to meet the specifications of ARINC
429. This Device is intended to be used with a companion chip,
HS-3282 CMOS ARINC Bus Interface Circuit, which provides
the data formatting and processor interface function.
All logic inputs are TTL and CMOS compatible. In addition to
the DATA (A) and DATA (B) inputs, there are also inputs for
CLOCK and SYNC signals which are AND’d with the DATA
inputs. This feature enhances system performance and allows
the HS-3182 to be used with devices other than the HS-3182.
Three power supplies are necessary to operate the
HS-3182: +V = +15V
±
10%, -V = -15V
±
10%, and V
1
= 5V
±
5%. V
REF
is used to program the differential output voltage
swing such that V
OUT
(DIFF) =
±
2V
REF
. Typically, V
REF
=
V
1
= 5V
±
5%, but a separate power supply may be used for
V
REF
which should not exceed 6V.
The driver output impedance is 75
±
20% at 25
o
C. Driver
output rise and fall times are independently programmed
through the use of two external capacitors connected to the
C
A
and C
B
inputs. Typical capacitor values are C
A
= C
B
=
75pF for high-speed operation (100KBPS), and C
A
= C
B
=
300pF for low-speed operation (12 to 14.5KBPS). The out-
puts are protected against over-voltage and short circuit as
shown in the Block Diagram. The HS-3182 is designed to
operate with a case temperature range of -55
o
C to +125
o
C,
or 0
o
C to +70
o
C.
Pinouts
HS-3182 (SBDIP)
TOP VIEW
HS-3182 (CLCC)
TOP VIEW
PACKAGE
TEMPERATURE
RANGE
PART NUMBER
PKG.
NO
SBDIP
-40
o
C to +85
o
C
HS1-3182-9+
D16.3
-55
o
C to +125
o
C
HS1-3182-8
D16.3
SMD#
-55
o
C to +125
o
C
5962-8687901EA
D16.3
CLCC
-55
o
C to +125
o
C
HS4-3182-8
J28.A
SMD#
-55
o
C to +125
o
C
5962-86879013A
J28.A
TRUTH TABLE
SYNC CLK DATA (A) DATA (B)
A
OUT
0V
B
OUT
0V
COMMENTS
X
L
X
X
Null
L
X
X
X
0V
0V
Null
H
H
L
L
0V
0V
Null
H
H
L
H
-V
REF
+V
REF
-V
REF
0V
+V
REF
Low
H
H
H
L
High
H
H
H
H
0V
Null
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
V
REF
GND
SYNC
DATA (A)
C
A
A
OUT
GND
-V
V
1
NC
CLK
DATA (B)
C
B
B
OUT
NC
+V
23
24
25
22
21
20
19
11
3
2
1
4
14
15
16
17 18
12
13
28
27 26
10
5
6
7
8
9
NC
DATA (A)
NC
NC
C
A
NC
NC
CLK
NC
DATA (B)
C
B
NC
NC
NC
N
A
O
-
G
+
N
B
O
S
G
N
V
R
V
1
N
N
File Number
2963.1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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Copyright
Intersil Corporation 1999