HARDWARE / PRODUCT

LVT Space Radiation Hardened Interfaces

3D Plus (HEICO)
LVT Space Radiation Hardened Interfaces

Radiation-hardened LVT dual 16-bit transceivers and level shifters for space, providing 32 channels in a single SOP82 package with cold sparing and bus hold, SEL/SEU immune, and TID >100 krad(Si).

Technical specifications

Channel Density
32 channels per package
Propagation Delay
1–4 ns
TID Tolerance
>100 krad(Si)
SEL Immunity
Immune
SEU Immunity
Immune
Cold Sparing
Yes
Bus Hold
Yes
Package
SOP82
Mission Duration
15–18 years proven
Voltage Options
1.8V–3.3V or 3.3V–5V (level shifter variants)

About

3D PLUS Radiation Hardened Low Voltage Technology (LVT) Interfaces offer dual 16-bit transceivers and bidirectional level shifters in a highly miniaturized SOP82 package, providing 32 channels per component for maximum board space savings. The devices support asynchronous communication between buses with direction control via digital input and two enable inputs for cold-sparing and bus-hold functionality.

Three device variants are available: 3DLT162245VS1639 (dual 16-bit buffer/transceiver with 24 mA driving), 3DLT164245VS1645 (3.3V to 5V bidirectional level shifter), and 3DLT163245US1696 (1.8V to 3.3V bidirectional level shifter). The 1–4 ns propagation delay supports high-speed board-level data buses in demanding space avionics.

Radiation hardness is exceptional: TID tolerance exceeds 100 krad(Si) and both SEL and SEU are immune, eliminating the need for external mitigation circuitry. The devices have demonstrated 15–18 year mission lifespans in verified space applications.

The LVT family is particularly suited for spacecraft data handling units, remote terminal units, and any application requiring robust multi-voltage bus interfacing with radiation immunity. Cold sparing capability ensures compatibility with fault-tolerant architectures.

Documentation

Need the full ICD, test reports or a specific revision? Ask the supplier directly.

Source: www.3d-plus.com ↗

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