HCC4520BDG STMicroelectronics Integrated Circuit (Ceramic Dual-In-Line Packages) In Stock
STMicroelectronics HCC4520BDG is a radiation-hardened, high-voltage CMOS 4000B series dual BCD (Binary Coded Decimal) up/down counter in a 16-pin ceramic DIP package. Each of its two independent 4-bit binary counters operates asynchronously from 3 V to 18 V supply with a maximum clock frequency of 12 MHz. Available from stock worldwide for space, military, and high-reliability industrial counting applications.
- Manufacturer
- STMicroelectronics
- Package
- Ceramic Dual-In-Line Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- HCC4520BDG Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -55.0°C to 125.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of HCC4520BDG?
- Radiation-hardened CMOS4000B fabrication suitable for space and military environments with 3 V to 18 V supply range
- Dual independent 4-bit BCD up/down counters in a single 16-pin ceramic DIP package, enabling 0-9 decade counting per channel
- Asynchronous operation at up to 12 MHz clock frequency with bidirectional count direction for frequency division and event counting
What is HCC4520BDG used for?
The HCC4520BDG is deployed in space satellite subsystems, avionics instrumentation, and military-grade control systems where radiation tolerance and wide-voltage CMOS logic are mandatory. Its dual BCD counter architecture also suits high-reliability industrial frequency counters, pulse totalizers, and legacy digital display drivers that require proven CMOS 4000B compatibility in a hermetically-sealed ceramic package.
What are the specifications of HCC4520BDG?
| Manufacturer Package Code | DIL16 FP |
| YTEOL | 5 |
| Count Direction | BIDIRECTIONAL |
| Family | 4000/14000/40000 |
| JESD-30 Code | R-GDIP-T16 |
| Load/Preset Input | NO |
| Logic IC Type | BINARY COUNTER |
| Mode of Operation | ASYNCHRONOUS |
| Number of Bits | 4 |
| Number of Functions | 1 |
| Package Body Material | CERAMIC, GLASS-SEALED |
| Package Equivalence Code | DIP16,.3 |
| Package Shape | RECTANGULAR |
| Package Style | IN-LINE |
| Packing Method | STRIP PACK |
| Peak Reflow Temperature (Cel) | NOT SPECIFIED |
| Screening Level | EUROPEAN SPACE AGENCY |
| Supply Voltage-Max (Vsup) | 15V |
| Supply Voltage-Min (Vsup) | 3V |
| Supply Voltage-Nom (Vsup) | 5V |
| Surface Mount | NO |
| Technology | CMOS |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 2.54mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | NOT SPECIFIED |
| Total Dose | 100k Rad(Si) V |
| Trigger Type | POSITIVE EDGE |
| Package | Ceramic Dual-In-Line Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8542.39.00.60 |
| Country of Origin | France |
Where can I find the HCC4520BDG datasheet?
HCC4520BDG Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for HCC4520BDG?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What supply voltage range does HCC4520BDG support and how does that affect its clock speed?
HCC4520BDG operates from 3 V to 18 V supply following CMOS 4000B electrical specifications. Maximum clock frequency is approximately 12 MHz at 15 V supply, dropping to about 4 MHz at 5 V due to the inherent speed-voltage relationship of CMOS logic. This makes the device suitable for low-power 3 V battery systems counting at a few MHz and for 15 V industrial systems requiring faster decade counting up to 12 MHz.
How many counting stages and BCD digits can be built by cascading multiple HCC4520BDG devices?
Each HCC4520BDG contains 2 independent 4-bit BCD counters, each counting from 0 to 9 (one decade). Two HCC4520BDG devices in cascade yield 4 decades, counting from 0 to 9,999. With a 12 MHz maximum clock and 4 cascaded decades, the prescaled output frequency drops to 12 MHz ÷ 10,000 = 1.2 kHz at the final carry output, useful for generating low-frequency time bases from high-frequency references in legacy instrumentation.
Why is the ceramic DIP package of HCC4520BDG preferred over plastic packages in avionics and space applications?
The ceramic DIL-16 FP package provides hermetic sealing, protecting the die from moisture, outgassing, and particulate contamination in vacuum or high-altitude environments where plastic packages degrade over time. Ceramic packages also withstand soldering temperatures above 300°C and temperature cycling from -55°C to +125°C without delamination or wire-bond failure, meeting MIL-STD-883 Class B and equivalent space qualification requirements that plastic SOIC or DIP packages cannot satisfy.
When is HCC4520BDG a better choice than a standard CD4520B for a high-reliability counter design?
CD4520B in a plastic package is adequate for commercial temperature ranges of 0°C to 70°C and non-radiation environments. HCC4520BDG offers the same dual 4-bit BCD counting function but in a ceramic hermetic package rated to 125°C, with radiation hardening against total ionising dose levels typically above 100 kRad(Si). For designs that must survive the ISS orbital radiation environment, military shock-and-vibration qualifications, or extended 20-year service lifetimes, HCC4520BDG is the qualified replacement for the commercial CD4520B.
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About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
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