W164
48-MHz and 24-MHz Clock Output (Lump Capacitance Test Load = 20 pF)
CPU = 66.8/100 MHz
Parameter
Description
Test Condition/Comments
Min.
Typ.
Max. Unit
f
Frequency, Actual
Determined by PLL divider ratio (see m/n below)
48.008
24.004
MHz
fD
Deviation from 48 MHz
PLL Ratio
(48.008 – 48)/48
+167
ppm
m/n
tR
(14.31818 MHz x ±7/17 = 48.008 MHz)
Measured from 0.4V to 2.4V
±7/17, ±7/34
Output Rise Edge Rate
Output Fall Edge Rate
Duty Cycle
0.±
0.±
4±
2
2
V/ns
V/ns
5
tF
Measured from 2.4V to 0.4V
tD
Measured on rising and falling edge at 1.±V
±±
3
fST
Frequency Stabilization
Assumes full supply voltage reached within 1 ms
ms
from Power-up (cold start) from power-up. Short cycles exist prior to
frequency stabilization.
Zo
AC Output Impedance
Average value during switching transition. Used
for determining series termination value.
2±
:
Ordering Information
Ordering Code
Package Name
Package Type
W164
G
28-pin SOIC (300 mils)
Package Diagram
28-Lead Molded
SOIC S28
DIMENSIONS IN INCHES[MM]
MIN.
MAX.
PART #
DETAIL
A
S28.4 STANDARD PKG.
SZ28.4 LEAD FREE PKG.
EXTERNAL LEAD DESIGN
PIN 1 ID
14
1
.395[10.033]
.405[10.287]
.530[13.462]
.545[13.843]
.026[0.660]
.032[0.812]
.013[0.330]
.019[0.482]
.015[0.381]
.020[0.508]
15
28
OPTION 1
OPTION 2
SEATING PLANE
.720[18.288]
.730[18.542]
.090[2.286]
.109[2.768]
A
0.004[0.102]
.050[1.270]
TYP.
.007[0.177]
.013[0.330]
.015[0.381]
.050[1.270]
.002[0.050]
.014[0.355]
While SLI has reviewed all information herein for accuracy and reliability, Spectra Linear Inc. assumes no responsibility for the use of any cir-
cuitry or for the infringement of any patents or other rights of third parties which would result from each use. This product is intended for use in
normal commercial applications and is not warranted nor is it intended for use in life support, critical medical instruments, or any other applica-
tion requiring extended temperature range, high reliability, or any other extraordinary environmental requirements unless pursuant to additional
processing by Spectra Linear Inc., and expressed written agreement by Spectra Linear Inc. Spectra Linear Inc. reserves the right to change any
circuitry or specification without notice.
Rev 1.0, November 28, 2006
Page 11 of 11
SPECTRALINEAR [ SPECTRALINEAR INC ]
