74HC297 Datasheet, PDF (8/12 Pages) NXP Semiconductors – Digital phase-locked-loop filter

Philips Semiconductors
Digital phase-locked-loop filter
Product specification
74HC/HCT297
Fig.8 Timing diagram: I/D_OUT in-lock condition.
Fig.9 Timing diagram: edge-controlled phase comparator waveforms.
September 1993
Fig.10 Timing diagram: EXCLUSIVE-OR phase detector waveforms.
8