ICS8752 Datasheet, PDF (4/15 Pages) Integrated Circuit Systems – LOW SKEW, 1-TO-8 LVCMOS CLOCK MULTIPLIER/ZERO DELAY BUFFER

Integrated
Circuit
Systems, Inc.
ICS8752
LOW SKEW, 1-TO-8
LVCMOS CLOCK MULTIPLIER/ZERO DELAY BUFFER
TABLE 4B. QB OUTPUT FREQUENCY W/FB_IN = QA
Inputs
FB_IN
DIV_
SELA1
DIV_
SELA0
QA Output
Divider Mode
(NOTE 2)
CLK0, CLK1 (MHz)
(NOTE 1)
Minimum Maximum
DIV_
SELB1
0
QA
0
0
÷2
110
240
0
(NOTE 3)
1
1
0
QA
0
1
÷4
0
55
120
1
1
0
QA
1
0
0
÷6
36.66
80
1
1
0
0
QA
1
1
÷8
27.5
60
1
1
NOTE 1: VCO frequency range is 220MHz to 480MHz.
NOTE 2: QB output frequency equal to CLKx frequency times the multiplier;
QA output frequency equal to CLKx.
NOTE 3: Maximum frequency of 240MHz valid for V_CC = 3.3V ± 5% only.
DIV_
SELB0
0
1
0
1
0
1
0
1
0
1
0
1
1
1
0
1
Outputs
QB Output QB Multiplier
Divider Mode (NOTE 2)
÷4
0.5
÷6
0.333
÷8
0.25
÷12
0.167
÷4
1
÷6
0.667
÷8
0.5
÷12
0.333
÷4
1.5
÷6
1
÷8
0.75
÷12
0.5
÷4
2
÷6
1.333
÷8
1
÷12
0.667
8752CY
www.icst.com/products/hiperclocks.html
4
REV. A AUGUST 19, 2002