644.53 MHz fixed-frequency XO for high-speed clock trees
The LMK61A2-644M53SIAT is a fixed-frequency clock oscillator from Texas Instruments, delivering a 644.53 MHz output from a 3.135 V to 3.465 V supply rail.
Package and board-fit for high-speed layout
Housed in a 6-SMD module with the supplier device package designated 6-QFM measuring 7 mm x 5 mm, this oscillator is surface-mount and intended for reflow assembly. The compact footprint suits dense clock trees on multi-layer PCBs where signal integrity at 644.53 MHz demands a tight loop between the oscillator, decoupling caps, and the load.