1

®

FN3034.4

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 321-724-7143

Copyright © Intersil Americas Inc. 2003. All Rights Reserved

All other trademarks mentioned are the property of their respective owners.

HS-245RH, HS-246RH, HS-248RH

HS-245RH

Radiation Hardened Triple

Line Transmitter

HS-246RH

Radiation Hardened Triple

Line Receiver

HS-248RH

Radiation Hardened Triple

Party-Line Receiver

The HS-245RH/246RH/248RH radiation hardened triple line

transmitter and triple line receivers are fabricated using the

Intersil dielectric isolation process. These parts are identical in

pinout and function to the original HD-245/246/248. They are

also die size and bond pad placement compatible with the

original parts for those customers who buy dice for hybrid

assembly.

Each transmitter-receiver combination provides a digital

interface between systems linked by 100

Ω twisted pair,

shielded cable. Each device contains three circuits

fabricated within a single monolithic chip. Data rates greater

than 15MHz are possible depending on transmission line

loss characteristics and length.

The transmitter employs constant current switching which

provides high noise immunity along with high speeds, low

power dissipation, low EMI generation and the ability to

drive high capacitance loads. In addition, the transmitters

can be turned “off” allowing several transmitters to time-

share a single line.

Receiver input/output differences are shown in the table:

The internal 100

Ω cable termination consists of 50Ω from

each input to ground.

HS-248RH ‘‘party line’’ receivers have a Hi-Z input such that

as many as ten of these receivers can be used on a single

transmission line.

Each transmitter input and receiver output can be connected to

TTL and DTL systems. When used with shielded transmission

line, the transmitter-receiver system has very high immunity to

capacitance and magnetic noise coupling from adjacent

conductors. The system can tolerate ground differentials of

-2.0V to +20.0V (transmitter with respect to receiver).

Specifications for Rad Hard QML devices are controlled

by the Defense Supply Center in Columbus (DSCC). The

SMD numbers listed here must be used when ordering.

Detailed Electrical Specifications for these devices are

contained in SMD 5962-96722 and 5962-96723.

Features

• Electrically Screened to SMD # 5962-96722 and

5962-96723

• QML Qualified per MIL-PRF-38535 Requirements

• Radiation Hardened DI Processing

- Total Dose . . . . . . . . . . . . . . . . . . . . 200 krad(Si) (Max)

- Latchup Free

• Replaces HD-245/246/248

• Current Mode Operation

• High Speed with 50 Foot Cable . . . . . . . . . . . . . . . 15MHz

High Speed with 1000 Foot Cable . . . . . . . . . . . . . . 2MHz

• High Noise Immunity

• Low EMI Generation

• Low Power Dissipation

• High Common Mode Rejection

• Transmitter and Receiver Party Line Capability

• Tolerates -2.0V to +20.0V Ground Differential (Transmitter

with Respect to Receiver)

• Transmitter Input/Receiver Output TTL/DTL Compatible

PART NO.

INPUT

OUTPUT

HS-246RH

100

Ω

Open Collector

HS-248RH

Hi-Z

6K Pull-Up Resistors

Ordering Information

ORDERING NUMBER

INTERNAL

MKT. NUMBER

TEMP. RANGE

5962R9672201QCC

HS1-245RH-8

-55 to 125

5962R9672201QXC

HS9-245RH-8

-55 to 125

5962R9672201VCC

HS1-245RH-Q

-55 to 125

5962R9672201VXC

HS9-245RH-Q

-55 to 125

HS9-245RH/PROTO

HS9-245RH/PROTO

-55 to 125

5962R9672301QCC

HS1-246RH-8

-55 to 125

5962R9672301QXC

HS9-246RH-8

-55 to 125

5962R9672301VCC

HS1-246RH-Q

-55 to 125

5962R9672301VXC

HS9-246RH-Q

-55 to 125

5962R9672302QCC

HS1-248RH-8

-55 to 125

5962R9672302QXC

HS9-248RH-8

-55 to 125

5962R9672302VCC

HS1-248RH-Q

-55 to 125

5962R9672302VXC

HS9-248RH-Q

-55 to 125

Data Sheet

April 2003