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Product attributes Property Value
Manufacturer Harris Corporation
Product Series
Packaging Bulk |
Type Clock Generator
PLL No
Input TTL
Output CMOS, TTL
Number of Circuits 1
Ratio - Input:Output 1:3
Differential - Input:Output No/No
Frequency - Max 25MHz
Divider/Multiplier Yes/No
Voltage - Supply 4.5V ~ 5.5V
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification -
Mounting Type Through Hole
Package / Case 24-CDIP (0.300", 7.62mm)
Supplier Device Package 24-CERDIP

The Harris ID82C85 is a classic clock generator designed for TTL-based systems. It accepts a TTL input and provides both CMOS and TTL outputs at frequencies up to 25MHz. With a single circuit and a robust 24-CDIP package, this device is well-suited for industrial and legacy applications where simple, reliable clock generation is required.

  • Dual output compatibility: Provides both CMOS and TTL outputs, simplifying interface with mixed-logic systems.
  • Rugged CDIP package: Offers high reliability in harsh environments, ideal for military and industrial use.
  • Simple TTL input: Easy to integrate with existing 5V logic designs.
  • Wide temperature range: Operates from -40°C to 85°C, ensuring performance in extreme conditions.

Legacy Microprocessor Systems

Generate the system clock for 8086/8088-based embedded systems, providing the required TTL-compatible timing signals.

Industrial Control Units

Provide a stable 25MHz clock for PLCs and industrial controllers that rely on proven, robust clock generation.

Memory Controller Timing

Supply clock signals to DRAM and SRAM controllers in older computer architectures, ensuring correct read/write timing.

Test Equipment Retrofit

Replace obsolete clock generators in benchtop test instruments, maintaining compatibility with existing TTL logic.

Military/Aerospace Systems

Use in ruggedized systems where the CDIP package offers high reliability and wide temperature operation.

Custom Digital Logic

Provide a basic clock source for breadboard or prototype digital circuits requiring TTL-level outputs.

Q: What type of device is the ID82C85?
A: It is a Clock Generator from Harris Corporation.
Q: Does it include a PLL?
A: No, it does not have a PLL.
Q: What are the input and output types?
A: Input is TTL; outputs are CMOS and TTL.
Q: How many circuits does it have?
A: It has 1 circuit.
Q: What is the maximum frequency?
A: The frequency is 25MHz.
Q: What is the package and temperature range?
A: It comes in a 24-CDIP package and operates from -40°C to 85°C.
Base Product Number : ID82C85
1 circuit 24-CDIP 25MHz Clock Generator CMOS Harris Industrial Legacy TTL
Q: What type of device is the ID82C85?
A: It is a Clock Generator from Harris Corporation.
Q: Does it include a PLL?
A: No, it does not have a PLL.
Q: What are the input and output types?
A: Input is TTL; outputs are CMOS and TTL.
Q: How many circuits does it have?
A: It has 1 circuit.
Q: What is the maximum frequency?
A: The frequency is 25MHz.
Q: What is the package and temperature range?
A: It comes in a 24-CDIP package and operates from -40°C to 85°C.