Ds4266 ddr clock oscillator, Electrical characteristics (continued) – Rainbow Electronics DS4266 User Manual

Page 3

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DS4266

DDR Clock Oscillator

_______________________________________________________________________________________

3

ELECTRICAL CHARACTERISTICS (continued)

(V

CC

= 3.135V to 3.465V, T

A

= -40°C to +85°C, unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

LVDS

Output High Voltage

V

OHLVDSO

100

 differential load (Note 1)

1.475

V

Output Low Voltage

V

OLLVDSO

100

 differential load (Note 1)

0.925

V

Differential Output Voltage

|V

ODLVDSO

|

100

 differential load

250

425

mV

Output Common-Mode Voltage
Variation

V

LVDSOCOM

100

 differential load

150

mV

Change in Differential Magnitude
or Complementary Inputs

|V

ODLVDSO

| 100 differential load

25

mV

Offset Output Voltage

V

OFFLVDSO

100

 differential load (Note 1)

1.125

1.275

V

Differential Output Impedance

R

OLVDSO

80

140



L

VSSLVDSO

OUTN or OUTP shorted to ground and
measure the current in the shorting path

40

Output Current

L

LVDSO

OUTN or OUTP shorted together

6.5

mA

Output Rise Time (Differential)

t

RLVDSO

20%

to

80%

175

ps

Output Fall Time (Differential)

t

FLVDSO

80%

to

20%

175

ps

Duty Cycle

D

CYCLE_LVDS

48 52

%

Propagation Delay from OE Going
Low to Logical 1 at OUTP

t

PA1

200 ns

Propagation Delay from OE Going
High to Output Active

t

P1A

200 ns

LVPECL

Output High Voltage

V

OH

Output connected to 50

 at PECL_BIAS

at V

CC

- 2.0V

V

CC

-

1.085

V

CC

-

0.88

V

Output Low Voltage

V

OL

Output connected to 50

 at PECL_BIAS

at V

CC

- 2.0V

V

CC

-

1.825

V

CC

-

1.62

V

Differential Voltage

V

DIFF_PECL

Output connected to 50

 at PECL_BIAS

at V

CC

- 2.0V

0.595 0.710

V

Rise Time

t

R-PECL

200

ps

Fall Time

t

F-PECL

200

ps

Duty Cycle

D

CYCLE_PECL

48 52

%

Propagation Delay from OE Going
Low to Output High Impedance

t

PAZ

200 ns

Propagation Delay from OE Going
High to Output Active

t

PZA

200 ns

Note 1: All voltages referenced to ground.
Note 2: AC parameters are guaranteed by design and not production tested.
Note 3: Frequency stability is calculated as:

Δf

TOTAL

=

Δf

TEMP

+

Δf

VCC

x (3.3 x 5%) +

Δf

LOAD

+

Δf

AGING

.

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