The HS-3182 is a monolithic dielectric ally isolated bipolar

differential 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 75Ω ±20 at +25°C. 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 (12kBPS to 14.5kBPS). The outputs are

protected against overvoltage and short circuit as shown in the

Block Diagram. The HS-3182 is designed to operate over an

ambient temperature range of -55°C to +125°C, or -40°C to

+85°C

Features

? RoHS/Pb-free Available for SBDIP Package (100 Gold

Termination Finish)

? 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 100k Bits/s

? Output Short Circuit Proof and Contains Overvoltage

Protection

? Outputs are Inhibited (0V) 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