회사 블로그 Supply ST Rad-Hard Logic IC Series:54AC/ACT,54HC/HCT,54VCX,CMOS 4000B

Supply ST Rad-Hard Logic IC Series:54AC/ACT,54HC/HCT,54VCX,CMOS 4000B

Shenzhen Mingjiada Electronics Co., Ltd. has become a leading supplier in the electronic components sector thanks to its extensive product range, stable supply channels, highly competitive prices, rapid lead times and comprehensive after-sales service.

1. Comprehensive product range covering multiple sectors

We stock over 2 million types of electronic components, extensively covering numerous sectors including 5G, new energy, the Internet of Things (IoT), connected cars, artificial intelligence (AI), healthcare and industrial control.

Our main products include: integrated circuits (ICs), evaluation boards, 5G ICs, new energy ICs, IoT ICs, Bluetooth ICs, automotive ICs, automotive-grade ICs, base station ICs, communications ICs, AI ICs, medical ICs, home appliance ICs, voice ICs, memory ICs, sensor ICs, microcontroller ICs, transceiver ICs, mobile phone ICs, iPhone/Apple Watch integrated circuits, wearable device integrated circuits, connectors, lighting integrated circuits, diodes and a range of other products to meet our customers’ demand for high-end components.

2. Stable Supply Channels and Quality Assurance

The company has established long-term partnerships with manufacturers and distributors in Hong Kong, Japan, Russia and Taiwan to ensure the stability of our supply channels.

All products undergo rigorous quality inspections, comply with the original manufacturers’ technical standards, and are certified to ISO 9001 and ISO 14001 to ensure product quality.

3. Competitive Pricing and Prompt Delivery

Through efficient supply chain management, we offer highly competitive prices and shortened lead times to meet our customers’ requirements for cost-effectiveness and time efficiency, ensuring products are delivered to customers promptly.

I. 54AC/ACT Radiation-Hardened High-Speed Logic Series

The 54AC/ACT series comprises ST’s high-end radiation-hardened high-speed CMOS logic devices, featuring the dual advantages of ultra-high radiation tolerance and high speed with low power consumption. Positioned for top-tier, high-reliability space applications, this product line offers the strongest radiation resistance and optimal operational adaptability amongst the five series. This series utilises a standard 5V high-speed CMOS architecture; the AC series operates at general-purpose CMOS levels, whilst the ACT series is compatible with TTL levels, enabling it to adapt to aerospace control systems with different interface levels and offering exceptional compatibility.

In terms of core performance parameters, the devices’ operating supply voltage range spans 2 V to 6 V, balancing low-voltage energy efficiency with stable operation at standard high voltages; the operating temperature range extends from –55 °C to +150 °C, making them perfectly suited to harsh operating conditions such as extreme temperature fluctuations in space and high-temperature, enclosed environments on board spacecraft. Radiation tolerance is a key highlight of the series; with a Total Ionising Dose (TID) radiation tolerance of up to 300 krad(Si). It also offers excellent protection against single-event effects, withstanding single-event latch-up (SEL) impacts of 110 MeV.cm²/mg. Single-event upsets (SEU) and single-event transients (SET) have been professionally characterised and hardened to eliminate radiation-induced logic errors and device latch-up failures.

The product quality has been certified to the top-tier QML-V standard for the defence and aerospace sectors. Utilising a ceramic hermetic package, it offers moisture-proof, dust-proof, vibration-resistant and shock-resistant properties, ensuring exceptional long-term operational stability whilst in orbit. A wide range of package options is available, including DIL 14/16/20-pin and Flat 14/16/20/48-pin configurations, making it suitable for various aerospace single-board computers and compact airborne equipment layouts. This series is designed for high-speed computing applications, with switching speeds far superior to those of the traditional HC series, whilst maintaining extremely low static power consumption. It is suitable for the most demanding space applications, such as satellite attitude control, deep-space probes and high-precision space telemetry and control systems.

II. 54HC/HCT Radiation-Hardened High-Speed Logic Series

The 54HC/HCT series comprises ST’s classic, cost-effective radiation-hardened logic ICs. As part of the general-purpose high-speed CMOS radiation-hardened product line, it emphasises balanced performance, high reliability and broad adaptability. Widely used in conventional aerospace, military vehicle applications and high-reliability industrial scenarios, it is one of the most widely deployed radiation-hardened logic series. Unlike the 54AC/ACT series, which is positioned at the high end of the market, this series strikes a balance between performance and cost, making it suitable for the development of equipment operating in moderate radiation environments.

In terms of electrical characteristics, this series also utilises a 5V high-speed CMOS process, with a supply voltage range of 2V to 6V—identical to the 54AC/ACT series—and offers wide voltage compatibility; With an operating temperature range of –55 °C to +150 °C, it offers excellent resistance to both high and low temperatures, meeting the requirements of the vast majority of standard military and aerospace operating conditions. In terms of radiation performance, the Total Ionising Dose (TID) tolerance is 50 krad(Si). Having passed the ESCC certification from the European Space Agency, the devices undergo specialised radiation hardening to effectively withstand ionising damage and single-event upsets in conventional space orbital and ground-based radiation environments.

The series comprises the HC general-purpose CMOS-level version and the HCT TTL-compatible-level version, enabling seamless integration with both traditional TTL logic circuits and new CMOS control systems, thereby significantly reducing the complexity of hardware compatibility design. A comprehensive range of package options is available, supporting DIL 14/16/20/24-pin and Flat 14/16/20/24-pin packages, which are compatible with standardised military circuit board layouts. Compared to the AC/ACT series, this series offers moderate switching speeds, lower costs and greater mass-production stability, making it suitable for applications such as aerospace subsystems, military vehicle control systems, satellite ancillary equipment and high-reliability industrial measurement and control equipment.

III. 54VCX Radiation-Hardened Ultra-High-Speed Low-Voltage Logic Series

The 54VCX series is ST’s radiation-hardened logic product line developed for low-voltage, ultra-high-speed and lightweight applications. Built on the advanced VCX low-voltage, high-speed CMOS process, it differs from traditional 5V architecture devices by emphasising low-voltage efficiency, high-speed operation, low power consumption and lightweight design, making it suitable for the new generation of miniaturised, low-power aerospace and military electronic equipment.

The core feature of this series is its low-voltage operating architecture, with a primary operating voltage of 3.3V. Compared to 5V series devices, power consumption is significantly reduced, whilst the devices offer higher integration and a smaller form factor, meeting the development requirements for lightweight, low-power aerospace equipment. In terms of speed performance, the 54VCX series comprises ultra-high-speed logic devices with switching latencies far lower than those of the HC and AC series, capable of meeting stringent speed requirements for high-speed data transmission, high-frequency signal processing and high-precision timing control.

In terms of radiation hardening, the devices feature a radiation-resistant structure optimised for low-voltage operation, effectively addressing the vulnerability of low-voltage devices to single-event upsets (SEUs). They offer stable total ionising dose (TID) tolerance and single-event protection, making them suitable for applications such as low-Earth orbit satellites, small spacecraft, high-speed control systems on board unmanned aerial vehicles (UAVs), and portable military electronic equipment. Furthermore, the series upholds ST’s military-grade quality standards, utilising hermetically sealed, ruggedised packages with excellent wide-temperature operation, vibration resistance and shock resistance, making it the core logic device for a new generation of lightweight, highly reliable electronic systems.

IV. CMOS 4000B Radiation-Hardened General-Purpose Wide-Voltage Logic Series

The CMOS 4000B is ST’s classic general-purpose radiation-hardened wide-voltage logic series, characterised by ultra-wide voltage compatibility, high stability and low static power consumption. Unlike the high-speed series mentioned above, this series does not prioritise extreme processing speeds; instead, its core strengths lie in operational compatibility and stability, making it suitable for a wide range of high-reliability applications requiring low speeds, long service life and wide-voltage power supplies.

The series’ key highlight is its ultra-wide operating voltage range, with supply voltages ranging from 3 V to 20 V—far exceeding the 5 V architecture of the AC and HC series. It can accommodate complex operating conditions involving non-standard regulated power supplies, battery power and wide-voltage fluctuating power supplies, significantly reducing the design complexity of power regulation modules. In terms of radiation resistance, the Total Ionising Dose (TID) resistance reaches 100 krad(Si) and has passed ESCC aerospace certification. Its radiation tolerance lies between that of the 54HC/HCT and 54AC/ACT series, offering balanced and stable performance.

With an operating temperature range of –55°C to +125°C, it is suitable for the demanding temperature environments typical of conventional defence, aerospace and industrial applications. It features extremely low quiescent power consumption and excellent long-term standby stability, making it ideal for applications such as long-life in-orbit equipment, unmanned monitoring and control systems, aerospace power control systems and ground-based defence monitoring equipment—scenarios where speed is not a priority but stability and endurance are of the utmost importance. Package options include DIL 14/16/24-pin and Flat series variants, which are fully compatible with traditional 4000-series general-purpose circuit designs, ensuring excellent replacement compatibility.