Found 4 alternatives for SN74LS629D by Rochester Electronics, LLC. Clock Timing Programmable Timers And Oscillators — 16-SOIC (0.154", 3.90mm Width).
IC OSC DUAL VCO 60MHZ 16-SOIC
IC OSC TIMER W/OSC 75MHZ 16SOIC
IC OSC DUAL VCO 20MHZ 16-SOIC
IC OSC DUAL VCO 60MHZ 16-SOIC