CD74ACT297 Datasheet, PDF (2/12 Pages) Texas Instruments – DIGITAL PHASE-LOCKED LOOP

CD74ACT297
DIGITAL PHASE-LOCKED LOOP
SCHS297A – AUGUST 1998 – REVISED SEPTEMBER 1999
Modulo Controls
DC B A
14 15 1 2
K CLK ⁴
6
D/U
3
ENCTR
Modulo K
Counter
5
I/D CLK
φA1 ⁹
10
φB
φA2 ¹³
Increment/Decrement
Circuit
J
K
Figure 1. Simplifed Block Diagram
7 _{I/D OUT}
11
XORPD OUT
12
ECPD OUT
2
• POST OFFICE BOX 655303 DALLAS, TEXAS 75265