Integrated
Circuit
Systems, Inc.
ICS8624
L
OW
S
KEW
, 1-
TO
-5
D
IFFERENTIAL
-
TO
-HSTL Z
ERO
D
ELAY
B
UFFER
Test Conditions
Minimum
Typical
4
51
51
Maximum
Units
pF
KΩ
KΩ
T
ABLE
2. P
IN
C
HARACTERISTICS
Symbol
C
IN
R
PULLUP
R
PULLDOWN
Parameter
Input Capacitance
Input Pullup Resistor
Input Pulldown Resistor
T
ABLE
3A. C
ONTROL
I
NPUT
F
UNCTION
T
ABLE
Inputs
SEL1
0
0
1
1
S E L0
0
1
0
1
Reference Frequency Range (MHz)*
250 - 700
125 - 350
62.5 - 175
31.25 - 87.5
Outputs
PLL_SEL = 1
PLL Enable Mode
Q0:Q4, nQ0:nQ4
÷1
÷1
÷1
÷1
*NOTE: VCO frequency range for all configurations above is 250MHz to 700MHz.
T
ABLE
3B. PLL B
YPASS
F
UNCTION
T
ABLE
Inputs
SEL1
0
0
1
1
SEL0
0
1
0
1
Outputs
PLL_SEL = 0
PLL Bypass Mode
Q0:Q4, nQ0:nQ4
÷4
÷4
÷4
÷8
8624BY
www.icst.com/products/hiperclocks.html
3
REV. C JUNE 15, 2004
ICS [ INTEGRATED CIRCUIT SYSTEMS ]
