®
HS-245RH, HS-246RH, HS-248RH
Data Sheet
April 2003
FN3034.4
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 100Ω 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:
PART NO.
HS-246RH
HS-248RH
INPUT
100Ω
Hi-Z
OUTPUT
Open Collector
6K Pull-Up Resistors
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
- Neutron Fluence . . . . . . . . . . . . . . . . . .5 x 10
12
N/cm
2
• 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
Ordering Information
ORDERING NUMBER
5962R9672201QCC
5962R9672201QXC
INTERNAL
MKT. NUMBER
HS1-245RH-8
HS9-245RH-8
HS1-245RH-Q
HS9-245RH-Q
HS9-245RH/PROTO
HS1-246RH-8
HS9-246RH-8
HS1-246RH-Q
HS9-246RH-Q
HS1-248RH-8
HS9-248RH-8
HS1-248RH-Q
HS9-248RH-Q
TEMP. RANGE
(
o
C)
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
-55 to 125
The internal 100Ω 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.
5962R9672201VCC
5962R9672201VXC
HS9-245RH/PROTO
5962R9672301QCC
5962R9672301QXC
5962R9672301VCC
5962R9672301VXC
5962R9672302QCC
5962R9672302QXC
5962R9672302VCC
5962R9672302VXC
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
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Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright © Intersil Americas Inc. 2003. All Rights Reserved
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