PCK2023 データシートの表示（PDF） - Philips Electronics

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PCK2023

CK408 (66/100/133/200 MHz) spread spectrum differential system clock generator

Philips Electronics 

Philips Semiconductors

CK408 (66/100/133/200 MHz) spread

spectrum differential system clock generator

Product data

PCK2023

AC WAVEFORMS

VM = 1.25 V @ VDDL and 1.5 V @ VDD3

VX = VOL + 0.3 V

VY = VOH – 0.3 V

VOL and VOH are the typical output voltage drop that occur with the

output load.

HOST CLK

HOST CLK

50%

VOH

VSS

50%

tSKEW

Figure 1. Host clock

VOH

VSS

tPERIOD

SW00850

COMPONENT

MEASUREMENT

POINTS

VOH = 2.4 V

VOL = 0.4 V

VSS

VDDL

VIH = 2.0 V

1.5 V

VIL = 0.7 V

SYSTEM

MEASUREMENT

POINTS

Figure 2. 3.3 V clock waveforms

SW00851

VI

SEL1,

SEL0

VM

GND

VDD

OUTPUT

LOW-to-OFF

OFF-to-LOW

VOL

tPLZ

VX

tPHZ

tPZL

VM

tPZH

VOH

OUTPUT

HIGH-to-OFF

OFF-to-HIGH

VSS

Outputs

enabled

VY

Outputs

disabled

VM

Outputs

enabled

SW00571

Figure 3. State enable and disable times

2001 Sep 07

13

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