MPC991 Просмотр технического описания (PDF) - Motorola => Freescale

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Компоненты Описание

производитель

MPC991

LOW VOLTAGE PLL CLOCK DRIVER

Motorola => Freescale 

MPC990 MPC991

ECL DC CHARACTERISTICS (TA = 0° to 70°C, VCCA = VCCI = VCCO = 0V, GNDI = –3.3V ±5%, Note 1.)

0°C

25°C

70°C

Symbol

Characteristic

Min

Typ

Max

Min

Typ

Max

Min

Typ

Max Unit

VOH

VOL

VIH

VIL

VPP

VCMR

Output HIGH Voltage

Output LOW Voltage

Input HIGH Voltage

Input LOW Voltage

Minimum Input Swing

Common Mode Range

–1.3

–2.0

–1.1

–1.8

500

VCC

–1.3V

–0.7 –1.3 –1.0 –0.7 –1.3

–1.4 –2.0 –1.7 –1.4 –2.0

–0.9 –1.1

–0.9 –1.1

–1.5 –1.8

–1.5 –1.8

500

500

VCC VCC

–0.5V –1.3V

VCC VCC

–0.5V –1.3V

–0.7

V

–1.4

V

–0.9

V

–1.5

V

mV

VCC

V

–0.5V

IIH

Input HIGH Current

150

150

150

µA

IGNDI Power Supply Current

200

240

200

240

200

240

mA

1. Refer to Motorola Application Note AN1545/D “Thermal Data for MPC Clock Drivers” for thermal management guidelines.

PECL DC CHARACTERISTICS (TA = 0° to 70°C, VCCA = VCCI = VCCO = 3.3V ±5%, GNDI = 0V, Note 2.)

0°C

25°C

70°C

Symbol

Characteristic

Min

Typ

Max

Min

Typ

Max Min Typ Max Unit

VOH

VOL

VIH

VIL

VPP

VCMR

Output HIGH Voltage (Note 3.)

Output LOW Voltage (Note 3.)

Input HIGH Voltage (Note 3.)

Input LOW Voltage (Note 3.)

Minimum Input Swing

Common Mode Range

2.0

1.3

2.2

1.5

500

VCC

–1.3V

2.6

2.0

2.3

2.6

2.3

1.9

1.3

1.6

1.9

1.3

2.4

2.2

2.4

2.2

1.8

1.5

1.8

1.5

500

500

VCC VCC

–0.5V –1.3V

VCC VCC

–0.5V –1.3V

2.6

V

1.9

V

2.4

V

1.8

V

mV

VCC

V

–0.5V

IIH

Input HIGH Current

150

150

150 µA

IGNDI Power Supply Current

200

240

200

240

200 240 mA

2. Refer to Motorola Application Note AN1545/D “Thermal Data for MPC Clock Drivers” for thermal management guidelines.

3. These values are for VCC = 3.3V. Level Specifications will vary 1:1 with VCC.

AC CHARACTERISTICS (TA = 0° to 70°C, VCCA = VCCI = VCCO = 3.3V ±5%, Termination of 50Ω to VCC – 2.0V)

Symbol

Characteristic

Min

Typ

Max

Unit

Condition

fxtal

Crystal Oscillator Frequency

10

25

MHz

tr, tf

Output Rise/Fall Time

0.2

1.0

ns 20% to 80%

tpw

Output Duty Cycle

47.5

50

52.5

%

tos

Output-to-Output Skew Same Frequency

Different Frequencies

150

250

ps

250

350

fVCO

PLL VCO Lock Range

VCO_Sel = ‘0’

400

VCO_Sel = ‘1’

200

800

MHz FB ÷8 to ÷32 (Note 4.)

400

FB ÷4 to ÷32

tpd

fmax

Ref to Feedback Offset

75

Maximum Output Frequency

Qa,Qb,Qc (÷2)

Qa,Qb,Qc (÷4)

Qa,Qb,Qc (÷6)

Qa,Qb,Qc (÷8)

250

425

ps fref = 50MHz (Note 5.)

400

MHz

200

133

100

tjitter

Cycle–to–Cycle Jitter (Peak–to–Peak)

±50

ps

tlock

Maximum PLL Lock Time

10

ms

4. With VCO_Sel = ‘0’, the PLL will be unstable with a ÷2, ÷4 or ÷6 feedback ratio. With VCO_Sel = ‘1’, the PLL will be unstable with a ÷2 feedback

ratio.

5. tpd is specified for 50MHz input reference FB ÷8. The window will shrink/grow proportionally from the minimum limit with shorter/longer input

reference periods. The tpd does not include jitter.

TIMING SOLUTIONS

5

BR1333 — Rev 6

MOTOROLA

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