What are Clock Generators, PLLs, Frequency Synthesizers ?
Clock Generators, PLLs, Frequency Synthesizers are integrated circuits that generate clock signals to synchronize operations in electronic devices. They are commonly used in applications like wireless communication, RF signal processing, and electronic assembly. Important specifications for selection include Frequency, which determines the operational speed; Input, which affects compatibility with existing systems; and Output, which ensures proper signal integrity. Sourcing teams should validate lifecycle status and consider alternate-source options to mitigate supply chain risks.
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| Part & Mfr | Differential | Divider | Frequency | Input | Mounting Type | Number of Circuits | Operating Temperature | Output | PLL | Ratio | Supplier Device Package | Type | Voltage | |||
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Intersil
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No/No | Yes/No | 36MHz | CMOS, TTL | Through Hole | 1 | -40°C ~ 85°C | CMOS, TTL | Yes | 3:1 | 16-PDIP | Phase Lock Loop (PLL) | 5V | |
Cypress Semiconductor
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No/No | Yes/Yes | 80MHz | CMOS | Surface Mount | 1 | 0°C ~ 70°C (TA) | CMOS | Yes | 1:8 | 32-PLCC (11.43x13.97) | Fanout Buffer (Distribution), Zero Delay Buffer | 4.5V ~ 5.5V | |
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Skyworks Solutions
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Harris Semiconductor
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Yes/No | No/No | - | CMOS, TTL, Crystal | Surface Mount | 1 | -40°C ~ 85°C (TA) | CMOS | Yes | 3:3 | 20-TSSOP | Frequency Synthesizer | 2.7V ~ 5.5V | |
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Standard Microsystems
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Freescale Semiconductor
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Yes/Yes | Yes/No | 200MHz | LVPECL | Surface Mount | 1 | -40°C ~ 85°C | LVPECL | Yes with Bypass | 2:5 | 32-LQFP (7x7) | Clock Driver, Fanout Distribution | 3.135V ~ 3.465V | |
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Standard Microsystems
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Standard Microsystems
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Cypress Semiconductor
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Cypress Semiconductor
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Cypress Semiconductor
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Cypress Semiconductor
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Cypress Semiconductor
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Cypress Semiconductor
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Cypress Semiconductor
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Cypress Semiconductor
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Skyworks Solutions
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AMI Semiconductor Inc.
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No/No | Yes/No | 27MHz | Crystal | Surface Mount | 1 | -55°C ~ 125°C (TA) | Clock | Yes | 1:1 | 8-SOIC | Clock Generator | 3V ~ 3.6V | |
AMI Semiconductor Inc.
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AMI Semiconductor Inc.
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No/No | Yes/No | 27MHz | Crystal | Surface Mount | 1 | 0°C ~ 70°C | Clock | Yes | 1:1 | 8-SOIC | PLL Clock Generator | 3V ~ 3.6V | |
Cypress Semiconductor
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Cypress Semiconductor
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Cypress Semiconductor
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No/No | No/No | 133.33MHz | Clock | Surface Mount | 1 | -40°C ~ 85°C (TA) | Clock | Yes with Bypass | 1:9 | 8-SOIC | Zero Delay Buffer | 3V ~ 3.6V | |
On Semiconductor
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No/No | Yes/No | 175MHz | Crystal | Surface Mount | 1 | 0°C ~ 70°C (TA) | Clock | Yes | 1:9 | 32-LQFP (7x7) | Clock Multiplier, Clock Synthesizer | 3.1V ~ 3.5V | |
Cypress Semiconductor
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On Semiconductor
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Yes/No | Yes/No | 175MHz | CMOS, PECL | Surface Mount | 1 | 0°C ~ 70°C (TA) | Clock | Yes | 1:9 | 32-LQFP (7x7) | Clock Multiplier, Zero Delay Buffer | 3.1V ~ 3.5V | |
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Cypress Semiconductor
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Cypress Semiconductor
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Cypress Semiconductor
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Cypress Semiconductor
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Cypress Semiconductor
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Cypress Semiconductor
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On Semiconductor
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On Semiconductor
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Cypress Semiconductor
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No/Yes | Yes/No | 248MHz | Crystal | Surface Mount | 2 | 0°C ~ 70°C (TA) | Clock | Yes | 1:21 | 48-SSOP | - | 2.375V ~ 2.625V, 3.135V ~ 3.465V | |
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Analog Devices / Maxim Integrated
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No/No | Yes/No | 27MHz | Clock | Surface Mount | 1 | -40°C ~ 125°C | Clock | No | 1:1 | 8-uMAX/uSOP | Spread Spectrum Clock Generator | 3V ~ 3.6V | |
Cypress Semiconductor
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No/No | Yes/No | 80MHz | Clock, Crystal | Surface Mount | 1 | 0°C ~ 70°C (TA) | Clock | Yes | 1:8 | 20-SOIC | Clock Generator | 3V ~ 3.6V | |
Cypress Semiconductor
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No/No | No/No | 133.33MHz | Clock | Surface Mount | 1 | 0°C ~ 70°C (TA) | Clock | Yes with Bypass | 1:9 | 8-SOIC | Zero Delay Buffer | 3V ~ 3.6V | |
Skyworks Solutions
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- | - | - | - | Surface Mount | - | - | - | - | - | 8-TDFN (1.4x1.6) | - | - | |
Cypress Semiconductor
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No/No | Yes/No | 74.25MHz | Clock, Crystal | Surface Mount | 1 | 0°C ~ 70°C (TA) | Clock | Yes | 1:4 | 16-TSSOP | Clock Generator | 3.135V ~ 3.465V | |
Cypress Semiconductor
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Renesas
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Cypress Semiconductor
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Cypress Semiconductor
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Cypress Semiconductor
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Cypress Semiconductor
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No/Yes | Yes/No | 300MHz | Crystal | Surface Mount | 1 | 0°C ~ 70°C | Clock | Yes with Bypass | 1:19 | 48-SSOP | Fanout Distribution, Multiplexer, Spread Spectrum Clock Generator | 3.135V ~ 3.465V | |
Cypress Semiconductor
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No/Yes | Yes/No | 133MHz | LVTTL, Crystal | Surface Mount | 2 | 0°C ~ 70°C (TA) | Clock | Yes | 1:6 | 48-SSOP | Frequency Synthesizer | 3.135V ~ 3.465V | |
Texas Instruments
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Yes/No | Yes/Yes | 3GHz | Clock | Surface Mount | 1 | -40°C ~ 85°C | Clock | Yes | 3:2 | 24-WQFN (4x4) | Frequency Synthesizer (RF) | 2.5V ~ 3.6V | |
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Renesas
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Cypress Semiconductor
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No/Yes | Yes/No | 48MHz | LVTTL | Surface Mount | 2 | 0°C ~ 70°C (TA) | Clock | Yes with Bypass | 1:8 | 48-SSOP | Clock Generator | 3.135V ~ 3.465V |
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