MK1432 Просмотр технического описания (PDF) - Integrated Circuit Systems

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MK1432

Green PC and Local Bus Clock Source

Integrated Circuit Systems 

MK1432/MK1434

Green PC and Local Bus Clock Source

Electrical Specifications

Parameter

Conditions

Minimum Typical Maximum Units

ABSOLUTE MAXIMUM RATINGS (note 1)

Supply voltage, VDD

Referenced to GND

7

V

Inputs and Clock Outputs

Referenced to GND

-0.5

VDD+0.5 V

Ambient Operating Temperature

0

70

°C

Soldering Temperature

Max of 20 seconds

260

°C

Storage temperature

-65

150

°C

DC CHARACTERISTICS (VDD = 5V unless noted)

Operating Voltage, VDD

3.0

5.5

V

Input High Voltage, VIH

2

V

Input Low Voltage, VIL

0.8

V

Mid-level pin Input High Voltage, VIH

Pin 9 only

VDD-0.5

V

Mid-level pin Input Low Voltage, VIL

Pin 9 only

0.5

V

Output High Voltage, VOH

IOH=-25mA

2.4

V

Output Low Voltage, VOL

IOL=25mA

0.4

V

Output High Voltage, VOH

VDD=3.3V, IOH=-8mA 2.4

V

Output Low Voltage, VOL

VDD=3.3V, IOL=8mA

0.4

V

Operating Supply Current, IDD

No Load, note 2

40

mA

Operating Supply Current, IDDPS

No Load, PS=0

27

mA

Short Circuit Current

Each output (except X2)

±100

mA

On-Chip Pull-up Resistor

Pins 1, 8, 10, 16

250

kΩ

Input Capacitance

7

pF

AC CHARACTERISTICS (VDD = 5V unless noted)

Input Frequency

14.31818

MHz

Output Clock Rise Time

0.8 to 2.0V

1.5

ns

Output Clock Fall Time

2.0 to 0.8V

1.5

ns

Output Clock Duty Cycle

At VDD/2

45

49 to 51

55

%

Cycle to Cycle Jitter, CPU Clocks

1000

ps

Absolute Clock Period Jitter

14-40 MHz clocks

-500

500

ps

Skew of 2XCPU with respect to CPU

Rising edges at 1.5V

-250

0

250

ps

Transition time, 33.3MHz to 66.6MHz

VDD=3.3 or 5V

3

ms

Transition time, 66.6MHz to 33.3MHz

VDD=3.3 or 5V

2

ms

Notes: 1. Stresses beyond those listed under Absolute Maximum Ratings could cause permanent damage to the

device. Prolonged exposure to levels above the operating limits but below the Absolute Maximums may

affect device reliability.

2. With 2XCPU clock at 66.66MHz, and BCLK at 33.33MHz

External Components

The MK1432/4 requires a minimum number of external components for proper operation. Decoupling capacitors of

0.1µF should be connected between VDD and GND, as close to the MK1432/4 as possible. A series termination

resistor of 33Ω may be used for each clock output. The device does not require (nor do we recommend) capacitors

connected to the crystal pins. The 14.31818 MHz crystal must be connected as close to the chip as possible.

Recommended load capacitance for the crystal is 12pF.

MDS 1432 G

3

Revision 060101

Integrated Circuit Systems, Inc. • 525 Race Street • San Jose • CA • 95126 • (408)295-9800 • www.icst.com

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