Microchip Introduces 1.2V LVCMOS Clock Buffers

The increasing use of advanced FinFET process technologies in FPGAs, SoCs, AI accelerators, and next-generation CPUs is driving demand for low-voltage clock buffers. Many of these devices use 1.2V clock interfaces, creating an interconnection challenge for PCB designers working with conventional 1.8V or 3.3V clock sources.

Microchip Technology has introduced the SY757xx family of 1.2V-output LVCMOS clock buffers to address this requirement. The devices integrate voltage translation and clock fanout functions in a single IC, eliminating discrete implementations based on voltage dividers and other external components. This approach reduces component count and board complexity while helping maintain clock integrity and duty-cycle accuracy.

The SY757xx family supports clock signals from 0 Hz to 250 MHz, with input and output configurations covering voltage levels from 1.2V to 3.3V. This lets the devices interface legacy clock sources and power architectures with processors that require low-voltage clock inputs. Depending on the device, inputs can be single-ended 1.2V-to-3.3V or 1.2V-to-1.8V LVCMOS, or differential 1.8V-to-3.3V signals.

The family also provides ultra-low additive jitter, with values as low as 26 fs, supporting clock distribution in systems where timing accuracy and signal integrity are critical. Applications include FPGA and SoC platforms for embedded vision, video processing, AI/ML acceleration, industrial control, IoT, networking, communications, and digital signal processing.

Compared with discrete voltage-translation solutions, the integrated buffers can simplify PCB implementation and reduce the bill of materials. Voltage-divider approaches can introduce insufficient design margins, signal degradation, and duty-cycle distortion, particularly in high-speed clock networks.

Microchip has initially launched three SY757xx devices in volume production, while eight additional variants are sampling in limited quantities. The production devices include the SY75707TWL-TR, which provides differential input and two LVCMOS outputs, and the SY75712TWL-TR and SY75714TWL-TR, offering two and four LVCMOS outputs, respectively. The devices are available in compact 8-pin VDFN or TDFN packages, with output voltages from 1.2V to 1.8V.

The broader portfolio also includes output-enable fanout options, providing additional flexibility for processor and FPGA clock-tree architectures.

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