company blog about Supply and Recycling of Aerospace-Grade LEOAC244PT-D Chips: Radiation-Hardened 8-Channel Buffer for Low-Earth Orbit Space Applications and High-Reliability Applications

In the fields of aerospace electronics, satellite communications, and high-reliability industrial applications, selecting a logic device that is radiation-hardened, operates over a wide voltage range, and features low power consumption is critical. As a professional supplier and recycler of electronic components, Mingjiada Electronics has long provided supply and inventory recycling services for the LEOAC244PT-D. Manufactured by STMicroelectronics, this device is a radiation-hardened plastic 8-channel bus buffer designed for Low Earth Orbit (LEO) applications. With its 3-state non-inverting outputs, 50 krad (Si) total ionizing dose tolerance, and a wide operating temperature range of -40°C to 125°C, it is an ideal choice for space-constrained and harsh-environment applications.

LEOAC244PT-D Product Overview

The LEOAC244PT-D is part of STMicroelectronics’ ST-LEO series, which utilizes low-power CMOS technology to meet the high-performance and high-reliability requirements of next-generation space systems. Its core function is to buffer and amplify input signals while providing three-state outputs to support bus sharing. The device consists of two stages, each providing four bits, for a total of eight non-inverting channels.

Thanks to its compact TSSOP-20 package and lightweight design weighing only 80 mg, the LEOAC244PT-D is well-suited for space payloads with strict size and weight constraints.

Detailed Specifications

The following are the key specifications of the LEOAC244PT-D, compiled from official technical documentation:

Manufacturer: STMicroelectronics

Logic Type: Buffer, Non-Inverting (Octal Bus Buffer)

Output Type: 3-State

Supply Voltage: 2 V to 6 V (Absolute Maximum: 7 V)

Output Current (High/Low): ±24 mA

Quiescent Current: 50 µA

Propagation Delay: 10 ns (Typical)

Operating Temperature Range: -40°C to +125°C (Automotive/Aerospace Grade)

Package Type: TSSOP-20 (Thin Shrink Small Outline Package)

Quality Grade: AEC-Q100 Certified

Radiation Resistance: Total Ionizing Dose 50 krad (Si); SEL Immunity Threshold 62.5 MeV.cm²/mg

Material Characteristics: Nickel/palladium/gold plating (NiPdAu), whisker-resistant; gold wire bonding

Outgassing Characteristics: RML <1%, CVCM <0.1% (meets aerospace low outgassing requirements)

Key Features and Advantages

The LEOAC244PT-D is unique in that it deeply integrates aerospace-grade robustness with the ease of use of standard logic devices:

Radiation Resistance and High Reliability: Designed specifically for the space environment, this device can withstand a total ionizing radiation dose of 50 krad (Si) and is immune to single-electron latch-up (SEL), with a radiation immunity of up to 62.5 MeV·cm²/mg, significantly reducing the risk of functional failure caused by space radiation.

Excellent Low Outgassing Characteristics: Through the use of a special nickel/palladium/gold (NiPdAu) plating and gold wire bonding process, whisker growth is effectively prevented, ensuring RML and CVCM specifications better than 1% and 0.1%, respectively, thereby preventing contamination of precision optics or sensitive sensors.

Wide Voltage Range and High Drive Current: Supports a wide power supply voltage range from 2 V to 6 V and is compatible with various logic levels (such as 3.3 V systems). It also provides a drive current of up to ±24 mA, sufficient to drive subsequent multi-stage loads.

Wide Temperature Range: With an operating temperature range of -40°C to +125°C, it meets the application requirements for environments ranging from ground-based industrial equipment to extreme temperature variations in space.

Typical Application Areas

With the above features, the LEOAC244PT-D is primarily targeted at the following high-reliability scenarios:

Low Earth Orbit (LEO) satellites: Used for bus buffering and driving between onboard computers and various functional modules.

Space launch vehicles and space probes: Responsible for control signal conditioning and data distribution.

High-reliability avionics: Such as flight control computers and navigation system interfaces.

Automotive Electronics and Industrial Control: Suitable for automotive-grade applications requiring AEC-Q100 compliance in harsh environments.

Supply and Recycling Services

Shenzhen Mingjiada Electronics Co., Ltd. has long been committed to providing supply chain services for high-end electronic components. We not only offer genuine, in-stock LEOAC244PT-D (TSSOP-20 package, with regularly updated batches) but also, through our extensive sales channels, purchase your factory dead stock, excess inventory, and surplus materials at competitive prices.

Supply Services: We provide brand-new, genuine LEOAC244PT-D components with traceable origins, available in tape-and-reel (TR) or cut-to-length (CT) packaging to meet both R&D sample and mass production needs.

Recycling Services: We offer one-stop inventory management solutions for all types of electronic chips and semiconductor devices, covering evaluation, pricing, logistics, and cash settlement to help customers free up capital.

If you have a need for LEOAC244PT-D or have inventory to dispose of, please feel free to contact Mingjiada Electronics.