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Product attributes Property Value
Manufacturer Cypress Semiconductor Corp
Product Series
Packaging Bulk |
Type Spread Spectrum Clock Generator
PLL Yes
Input CMOS, TTL
Output CMOS, TTL
Number of Circuits 1
Ratio - Input:Output 1:1
Differential - Input:Output No/No
Frequency - Max 82MHz
Divider/Multiplier No/No
Voltage - Supply 2.97V ~ 3.63V, 4.5V ~ 5.5V
Operating Temperature 0°C ~ 70°C (TA)
Grade -
Qualification -
Mounting Type Surface Mount
Package / Case 8-TSSOP (0.173", 4.40mm Width)
Supplier Device Package 8-TSSOP

The IMIFS781BTT is a spread spectrum clock generator from Cypress Semiconductor, integrating a PLL to produce a low-EMI 82MHz output. It accepts CMOS or TTL inputs and delivers CMOS/TTL outputs, making it ideal for reducing electromagnetic interference in digital systems. Housed in a compact 8-TSSOP package, it operates over 0°C to 70°C, suitable for consumer and industrial applications.

  • Reduced EMI: Spread spectrum modulation lowers peak radiated energy, easing compliance testing.
  • Flexible Logic Levels: CMOS and TTL compatibility simplifies interfacing with various ICs.
  • Integrated PLL: Provides precise frequency synthesis from a lower-frequency reference.
  • Compact Package: 8-TSSOP saves board space in space-constrained designs.

Consumer Electronics EMI Reduction

In devices like set-top boxes or gaming consoles, the IMIFS781BTT's spread spectrum modulation reduces peak EMI, helping designs pass FCC or CE certification without expensive shielding.

Embedded System Clock Generation

For microcontrollers or SoCs requiring a clean 82MHz clock, this generator provides a stable, low-jitter output from a CMOS or TTL reference, simplifying the clock tree.

Networking Equipment Timing

In routers and switches, the spread spectrum feature minimizes interference with high-speed serial links, improving signal integrity and system reliability.

Industrial Control Systems

With a 0°C to 70°C range, it suits industrial controllers needing reliable clock generation in ambient environments, reducing radiated emissions from long PCB traces.

Audio/Video Interface Clocking

For HDMI or DisplayPort transmitters, the PLL-based generator ensures a stable pixel clock while spread spectrum reduces interference with audio codecs.

Q: What type of device is the IMIFS781BTT?
A: It is a Spread Spectrum Clock Generator designed to reduce electromagnetic interference (EMI) in electronic systems.
Q: Does the IMIFS781BTT include a PLL?
A: Yes, it features an integrated Phase-Locked Loop (PLL) for clock generation and frequency synthesis.
Q: What are the input and output types?
A: Both input and output are CMOS and TTL compatible, providing flexibility with standard logic levels.
Q: How many clock circuits does it have?
A: It contains 1 circuit, generating a single output clock from the input reference.
Q: What is the maximum output frequency?
A: The device supports a maximum frequency of 82MHz.
Q: What is the operating temperature range and package?
A: It operates from 0°C to 70°C and comes in an 8-TSSOP package.
Base Product Number : IMIFS781BTT
1 Circuit 8-TSSOP 82MHz Clock Generator CMOS EMI Reduction PLL Spread Spectrum Clock Generator TTL
Q: What type of device is the IMIFS781BTT?
A: It is a Spread Spectrum Clock Generator designed to reduce electromagnetic interference (EMI) in electronic systems.
Q: Does the IMIFS781BTT include a PLL?
A: Yes, it features an integrated Phase-Locked Loop (PLL) for clock generation and frequency synthesis.
Q: What are the input and output types?
A: Both input and output are CMOS and TTL compatible, providing flexibility with standard logic levels.
Q: How many clock circuits does it have?
A: It contains 1 circuit, generating a single output clock from the input reference.
Q: What is the maximum output frequency?
A: The device supports a maximum frequency of 82MHz.
Q: What is the operating temperature range and package?
A: It operates from 0°C to 70°C and comes in an 8-TSSOP package.