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Renesas Electronics Corporation

Renesas’ Timing product portfolio has been acquired by SiTime.

Datasheets, documentation, and sample orders remain available on Renesas.com through late 2026. For new designs, purchasing, support, and product inquiries, visit SiTime.com or send an email to [email protected]. Full transition to SiTime is expected by late 2026.

Features

  • Packaged in a 16-pin SOIC
  • Accepts 8kHz input clock
  • Output clock rates include T1, E1, T2, and E2
  • Available in commercial (0 °C to + 70 °C) or industrial (-40 °C to +85 °C) temperature ranges

Description

The MK1574-01A/B are Phase-Locked Loop (PLL) based clock synthesizers that accept an 8kHz clock input as a reference and generate many popular communications frequencies. All outputs are frequency-locked together and to the input. This allows for the generation of locked clocks to the 8kHz backplane clock, simplifying clock generation and distribution in communications systems. 

  • MK1574-01A — 5V operation
  • MK1574-01B — 3.3V operation

Renesas manufactures the largest variety of clock generators and buffers and can customize this device for a variety of frequencies.

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