178
TM
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 VREF
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
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 V1 = 5V
± 5%. VREF is used to program the differential output voltage
swing such that VOUT (DIFF) = ± 2VREF. Typically, VREF =
V1 = 5V ± 5%, but a separate power supply may be used for
VREF which should not exceed 6V.
The driver output impedance is 75
± 20% at 25oC. Driver
output rise and fall times are independently programmed
through the use of two external capacitors connected to the
CA and CB inputs. Typical capacitor values are CA = CB =
75pF for high-speed operation (100KBPS), and CA = CB =
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 -55oC to +125oC,
or 0oC to +70oC.
Pinouts
HS-3182 (SBDIP)
TOP VIEW
HS-3182 (CLCC)
TOP VIEW
Ordering Information
PACKAGE
TEMPERATURE
RANGE
PART NUMBER
PKG.
NO
SBDIP
-40oC to +85oC
HS1-3182-9+
D16.3
-55oC to +125oC
HS1-3182-8
D16.3
SMD#
-55oC to +125oC
5962-8687901EA
D16.3
CLCC
-55oC to +125oC
HS4-3182-8
J28.A
SMD#
-55oC to +125oC
5962-86879013A
J28.A
TRUTH TABLE
SYNC CLK DATA (A) DATA (B) AOUT BOUT COMMENTS
X
L
X
0V
Null
L
X
0V
Null
H
L
0V
Null
HH
L
H
-VREF +VREF
Low
HH
H
L
+VREF -VREF
High
H
0V
Null
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
VREF
GND
SYNC
DATA (A)
CA
AOUT
GND
-V
V1
CLK
DATA (B)
CB
BOUT
NC
+V
NC
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
CA
NC
CLK
NC
DATA (B)
CB
NC
A
OU
T
-V
GN
D
+V
NC
B
OU
T
SY
N
C
GN
D
NC
V
RE
F
V
1
NC
FN2963.1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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