SY89874UMI datasheet(5/10 Pages) MICREL

Part #	SY89874UMI

Description	2.5GHz ANY DIFF. IN-TO-LVPECL PROGRAMMABLE CLOCK DIVIDER/FANOUT BUFFER WITH INTERNAL TERMINATION

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Manufacturer	MICREL [Micrel Semiconductor]

Direct Link	http://www.micrel.com

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5 / 10 page

5

Precision Edge™

SY89874U

Micrel

V

CC = 3.3V ±10% or 2.5V ±5%; TA = –40°C to +85°C; Unless otherwise stated.

Symbol

Parameter

Condition

Min

Typ

Max

Units

f

MAX

Maximum Output Toggle Frequency

Output Swing

≥ 400mV

2.5

GHz

Maximum Input Frequency

Divide by 2, 4, 8, 16

3.2

GHz

t

PLH

Differential Propagation Delay

Input Swing < 400mV

540

650

790

ps

t

PHL

IN to Q

Input Swing

≥ 400mV

480

600

730

ps

t

SKEW

Within-Device Skew (diff.)

Note 3

715

ps

Q0–Q1

Part-to-Part Skew (diff.)

Note 3

250

ps

t

RR

Reset Recovery Time

Note 4

600

ps

Tjitter

Cycle-to-Cycle Jitter

Note 5

1

ps(rms)

Total Jitter

Note 6

10

ps(pk-pk)

t

r,tf

Rise/Fall Time (20% to 80%)

70

150

250

ps

Note 1.

Measured with 400mV input signal, 50% duty cycle, all outputs loaded with 50

Ω to V

CC–2V, unless otherwise stated.

Note 2.

Specification for packaged product only.

Note 3.

Skew is measured between outputs under identical transitions.

Note 4.

See

“Timing Diagram.”

Note 5.

Cycle-to-cycle jitter definition: the variation in period between adjacent cycles over a random sample of adjacent cycle pairs. Tjitter_cc=Tn–Tn+1,

where T is the time between rising edges of the output signal.

Note 6.

Total jitter definition: with an ideal clock input, of frequency

≤ f

MAX (device), no more than one output edge in 10

12 output edges will deviate by more

than the specified peak-to-peak jitter value.

AC ELECTRICAL CHARACTERISTICS(Notes 1, 2)

TIMING DIAGRAM

VIN

/RESET

IN

/IN

/Q

Q

tPD

tRR

VCC/2

VIN Swing

VOUT Swing

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