HS-82C85RH

• Electrically Screened to SMD # 5962-95820
• QML Qualified per MIL-PRF-38535 Requirements
• Radiation Hardened
- Total Dose. . . . . . . . . . . . . . . . . . . . . 100 krad(Si) (Max)
- Transient Upset. . . . . . . . . . . . . . . . . . . . >10⁸ rad(Si)/s
- Latch Up Free EPI-CMOS
• Very Low Power Consumption
• Pin Compatible with NMOS 8285 and Intersil 82C85
• Generates System Clocks for Microprocessors and Peripherals
• Complete Control Over System Clock Operation for Very Low System Power
- Stop-Oscillator
- Stop-Clock
- Low Frequency (Slo) Mode
- Full Speed Operation
• DC to 15MHz Operation (DC to 5MHz System Clock)
• Generates Both 50% and 33% Duty Cycle Clocks (Synchronized)
• Uses Either Parallel Mode Crystal Circuit or External Frequency Source
• Hardened Field, Self-Aligned, Junction Isolated CMOS Process
• Single 5V Supply
• Military Temperature Range . . . . . . . . . . . -55 to 125

The Intersil HS-82C85RH is a high performance, radiation hardened CMOS Clock Controller/Generator designed to support systems utilizing radiationhardened static CMOS microprocessors such as the HS-80C86RH. The HS-82C85RH contains a crystal controlled oscillator, reset pulse conditioning, halt/restart logic, and divide-by-256 circuitry. These features provide the means to stop the system clock, stop the clock oscillator, or run the system at a low frequency (CLK/256), enhancing control of static system power dissipation and allowing system shut-down during periods of external stress.

Static CMOS circuit design of HS-82C85RH insures low operating power and permits operation with an external frequency source from DC to 15MHz. Crystal controlled operation to 15MHz is guaranteed with the use of a parallel, fundamental mode crystal and two small load capacitors. Outputs are guaranteed compatible with both CMOS and TTL specifications. The Intersil hardened field CMOS process results in performance equal to or greater than existing radiation resistant products at a fraction of the power.