1 Features
• Clock frequency range: DC to 24 MHz
• 1.2-V to 1.8-V LVCMOS clock level translation:
– VDD_IN = 1.2 V ± 10%
– VDD_OUT = 1.8 V ± 10%
• Low additive jitter and phase noise:
– 0.8-ps maximum 12-kHz to 5-MHz additive
RMS jitter (fout = 24 MHz)
– –120-dBc/Hz maximum phase noise at 1-kHz
offset (fout = 24 MHz)
– –148-dBc/Hz maximum phase noise floor (fout =
24 MHz, foffset ≥ 1 MHz)
• 5-ns 20% to 80% rise/fall time
• 10-ns propagation delay
• Low current consumption
• –40°C to 85°C operating temperature range
2 Applications
• FPGA/processor clock buffering/level translation in
personal electronics
• 1.2-V clock buffer and level translator in servers
and add-in cards
3 Description
The CDCBT1001 is a 1.2-V to 1.8-V clock buffer
and level translator. The VDD_IN pin supply voltage
defines the input LVCMOS clock level. The VDD_OUT
pin supply voltage defines the output LVCMOS clock
level. VDD_IN = 1.2 V ± 10%. VDD_OUT = 1.8 V ±
10%
The 12-kHz to 5-MHz additive RMS jitter at 24 MHz is
less than 0.8 ps.