MPC974

TIMING SOLUTIONS

BR1333 — Rev 6

3

MOTOROLA

Figure 2. Logic Diagram

PLL

Qa0:4

Q

TCLK0

FB_In

0

1

D

0

1

TCLK1

TCLK_Sel

÷2

÷4

0

1

PLL_EN

R

÷2

÷4

÷6

VCO_Sel

R

0

1

5

Qb0:4

Q

D

R

0

1

5

Qc0:3

Q

D

R

0

1

4

QFB

Q

D

R

0

1

0

1

÷2

fselb

fselc

fsela

MR

OE

fselFB0

fselFB1

(Int. Pulldown)

(Int. Pullup)

(Int. Pullup)

(Int. Pulldown)

(Int. Pullup)

(Int. Pulldown)

(Int. Pulldown)

(Int. Pulldown)

(Int. Pulldown)

(Int. Pullup)

(Int. Pullup)

(Int. Pulldown)

(Int. Pulldown)

ABSOLUTE MAXIMUM RATINGS*

Symbol

Parameter

Min

Max

Unit

VCC

Supply Voltage

–0.3

5.6

V

VI

Input Voltage

–0.3

VDD + 0.3

V

IIN

Input Current

8

mA

TStor

Storage Temperature Range

–40

125

°C

* Absolute maximum continuous ratings are those values beyond which damage to the device may occur. Exposure to these conditions or conditions beyond those

indicated may adversely affect device reliability. Functional operation under absolute-maximum-rated conditions is not implied.

DC CHARACTERISTICS (TA = 0° to 70°C, VCC = 3.3V ±5%)

Symbol

Characteristic

Min

Typ

Max

Unit

Condition

VIH

Input HIGH Voltage

2.0

VCC

V

VIL

Input LOW Voltage

0.8

V

VOH

Output HIGH Voltage

2.4

V

IOH = –20mA (Note 1.)

VOL

Output LOW Voltage

0.5

V

IOL = 20mA (Note 1.)

IIN

Input Current

±100

µA

Note 2.

ICC

Maximum Quiescent Supply Current

120

mA

CIN

Input Capacitance

8

pF

Cpd

Power Dissipation Capacitance

25

pF

Per Output

1. The MPC974 outputs can drive series or parallel terminated 50

Ω (or 50Ω to VCC/2) transmission lines on the incident edge (see Applications

Info section).

2. Inputs have either pull–up or pull–down resistors which affect input current.