MK1491 Integrated Circuit System, MK1491 Datasheet
MK1491
Available stocks
Related parts for MK1491
MK1491 Summary of contents
Page 1
... Description The MK1491- low cost, low jitter, high performance clock synthesizer for National Semiconductor CS5530 based computer and portable appliance applications. Using patented analog Phase-Locked Loop (PLL) techniques, the device accepts a 14.318 MHz crystal input to produce multiple output clocks. It provides ...
Page 2
... I/O PCI Output clock that can be early. Input control for Early PCI per table above. O PCI Output clock. PCI/PCIF control set by PEN per table above. O PCI Output clock. PCI/PCIF control set by PEN per table above. O PCI Output clock. 2 MK1491-06 Clock Source ™ PCI Frequency Select Table ...
Page 3
... Minimum Referenced to GND Referenced to GND -0.5 0 Max of 10 seconds -65 3.1 2 1.2 IOH=-8mA 2.4 IOL=8mA IOH=-8mA VDD-0.4 No Load, 33.3 MHz VDD=3.3V 0.8 to 2.0V 2.0 to 0.8V At 1.5V 45 Rising edges at 1.5V 33.3 MHz PCI clock 3 MK1491-06 Clock Source ™ Typical Maximum Units 7 V VDD+0 °C 260 °C 150 °C 3.3 3. 1.4 1.6 V 0.8 ...
Page 4
... The MK1491-06 requires some inexpensive external components for proper operation. Decoupling capacitors of 0.1µF should be connected on each VDD pin to ground, as close to the MK1491-06 as possible. A series termination resistor of 33 each clock output. See the discussion below for other external resistors required for proper I/O operation. The 14.3 MHz oscillator has internal caps that provide the proper load for a parallel resonant crystal with C L =18 pF ...
Page 5
... CS5530 Geode Clock Source ™ 28 pin SOIC Inches Inches Millimeters Millimeters Symbol Min Max Min A -- 0.104 -- A1 0.0040 -- 0.10 B 0.013 0.020 0.33 C 0.007 0.013 0.18 D 0.697 0.724 17.70 E 0.291 0.299 7.40 e .050 BSC .050 BSC 1.27 BSC 1.27 BSC H 0.394 0.419 10.01 h 0.01 0.029 0.25 L 0.016 0.050 0. Revision 101700 MK1491-06 Max 2.65 -- 0.51 0.33 18.39 7.60 10.64 0.74 1.27 Printed 11/15/00 ...
Page 6
... Integrated Circuit Systems, Inc. • 525 Race Street • San Jose • CA • 95126 • (408)295-9800tel • www.icst.com Marking Low EMI Feature MK1491-06R Yes MK1491-06R Yes MK1491-06S Yes MK1491-06S Yes 6 CS5530 Geode Clock Source ™ 28 pin SSOP Inches Inches ...