CDC925

133-MHz CLOCK SYNTHESIZER/DRIVER FOR PC MOTHERBOARDS

WITH 3-STATE OUTPUTS

SCAS633 – JULY 28, 1999

7

POST OFFICE BOX 655303

electrical characteristics over recommended operating free-air temperature range (unless

otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP†

MAX

UNIT

VIK

Input clamp voltage

VDD = 3.135 V,

II = –18 mA

–1.2

V

RI

Input resistance

XIN-XOUT

VDD = 3.465 V,

VI = VDD –0.5 V

80

350

k

Ω

XOUT

VDD = 3.135 V,

VI = VDD –0.5 V

20

50

mA

IIH

High-level input current

SEL0, SEL1,

CPU_STOP,

PCI_STOP,

SPREAD

VDD = 3.465 V,

VI = VDD

<10

10

µA

PWR_DWN

VDD = 3.465 V,

VI = VDD

<10

10

µA

SEL133/100

VDD = 3.465 V,

VI = VDD

<10

10

µA

XOUT

VDD = 3.135 V,

VO = 0 V

–2

–5

mA

IIL

Low-level input current

SEL0, SEL1,

CPU_STOP,

PCI_STOP,

SPREAD

VDD = 3.465 V,

VI = GND

<10

–10

µA

PWR_DWN

VDD = 3.465 V,

VI = GND

<10

–10

µA

SEL133/100

VDD = 3.465 V,

VI = GND

<10

–10

µA

IOZ

High-impedance-state output current

|VDD| = max,

VO = VDD or GND

±10

µA

VDD = 2.625 V,

All outputs = low

PWR_DWN = low,

<20

100

IDD

Supply current

VDD = 2.625 V,

All outputs = high

VDDx = 2.5 V,

<20

100

µA

DD

y

VDD = 3.465 V,

All outputs = low

PWR_DWN = low,

<50

200

VDD = 3.465 V,

All outputs = high

12

35

mA

IDD(Z) High impedance state supply current

VDD = 2.625 V

1.4

mA

IDD(Z) High-impedance-state supply current

VDD = 3.465 V

28

mA

Dynamic supply current

CL = 20 pF,

VDD = 3.465 V

114

146

mA

Dynamic supply current

L

CPU = 133 MHz

VDD = 2.625 V

52

70

mA

CI

Input capacitance

VDD = 3.3 V,

VI = VDD or GND

3.3

5.8

pF

Crystal terminal capacitance

VDD = 3.3 V,

VI = 0.3 V

18

18.5

22.5

pF

† All typical values are measured at their respective nominal VDD values.