View cxa1805q datasheet:

( ) CXA1805Q 1/2 IL00 ********** PHASE LOCKED LOOP CIRCUIT -TOP VIEW- 20 1 PBX CKX 25 NC 16 19 32 PBY CKY 26 NC 15 VCC(+5V) 23 29 LTX CK 27 NC 14 GND 22 30 LTY DATA 28 NC 13 VEE(–5V) 29 NC 12 (+3.3V) VDD2 4 5 FRQSEL FLT 30 GND 11 D GND2 7 6 SPD DC 31 NC 10 9 LUP 32 9 17 DLYSEL INPUT PIN PIN I/O SIGNAL I/O SIGNAL DLYSEL ; EDGE PULSE WIDTH SELECT NO. NO. ( ) H = 2.5 ns, L = 5 ns 1 O CKX 17 I DLYSEL FRQSEL ; VCO OSCILLATION FREQUENCY SELECT 2 — D GND1 18 — NC ( ) LTX ; LATCH INPUT + (–) 3 — VEE 19 I PBY LTY ; LATCH INPUT LUP ; PLL PULL-IN TIME CHANGE 4 I FRQSEL 20 I PBX ( ) PBX ; PLL INPUT + 5 — FLT 21 — NC (–) PBY ; PLL INPUT 6 — DC 22 I LTY SPD ; DETERMINATION OF FREE RUN FREQUENCY 7 I SPD