W164G Cypress Semiconductor Corp., W164G Datasheet - Page 10

• Manufacturer Part Number: W164G
• Description: Spread Spectrum Desktop / Notebook System Frequency Generator
• Manufacturer: Cypress Semiconductor Corp.

48-MHz and 24-MHz Clock Output (Lump Capacitance Test Load = 20 pF)
Ordering Information
Document #: 38-07169 Rev. *A
f
f
m/n
t
t
t
f
Z
W164
Parameter
D
R
F
D
ST
o
Ordering Code
Frequency, Actual
Deviation from 48 MHz
PLL Ratio
Output Rise Edge Rate
Output Fall Edge Rate
Duty Cycle
Frequency Stabilization
from Power-up (cold start)
AC Output Impedance
Description
Package
Name
G
28-pin SOIC (300 mils)
Determined by PLL divider ratio (see m/n below)
(48.008 – 48)/48
(14.31818 MHz x 57/17 = 48.008 MHz)
Measured from 0.4V to 2.4V
Measured from 2.4V to 0.4V
Measured on rising and falling edge at 1.5V
Assumes full supply voltage reached within 1 ms
from power-up. Short cycles exist prior to fre-
quency stabilization.
Average value during switching transition. Used
for determining series termination value.
Package Type
Test Condition/Comments
Min.
0.5
0.5
45
CPU = 66.8/100 MHz
57/17, 57/34
48.008
24.004
+167
Typ.
25
Max.
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55
2
2
3
W164
MHz
V/ns
V/ns
Unit
ppm
ms
%