SY89871U datasheet(3/10 Pages) MICREL

Part #	SY89871U

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

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Manufacturer	MICREL [Micrel Semiconductor]

Direct Link	http://www.micrel.com

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3

Precision Edge™

SY89871U

Micrel

M9999-062904

hbwhelp@micrel.com or (408) 955-1690

Absolute Maximum Ratings(1)

Supply Voltage (V

CC) .................................. –0.5V to +4.0V

Input Voltage (V

IN) ............................... –0.5V to VCC +0.3V

PECL Output Current (I

OUT)

Continuous ......................................................... 50mA

Surge ................................................................ 100mA

V

T Current (IVT) ...................................................... ±100mA

Input Current IN, /IN (I

IN) .......................................... ±50mA

V

REF-AC Sink/Source Current (IVREF-AC)

(3) ....................

±2mA

Lead Temperature (soldering, 10 sec.) ..................... 220

°C

Storage Temperature (T

S) ....................... –65°C to +150°C

Operating Ratings(2)

Supply Voltage (V

CC) ............................ +2.375V to +3.63V

Ambient Temperature (T

A) ......................... –40°C to +85°C

Package Thermal Resistance(4)

MLF™

(θ

JA)

Still-Air ............................................................. 60

°C/W

500lfpm ............................................................ 54

°C/W

MLF™

(ψ

JB)

Junction-to-board ............................................ 32

°C/W

TA = –40°C to +85°C, unless otherwise stated.

Symbol

Parameter

Condition

Min

Typ

Max

Units

VCC

Power Supply Voltage

2.37

3.60

V

ICC

Power Supply Current

No load, max VCC.50

75

mA

RIN

Differential Input Resistance,

80

100

120

Ω

(IN, /IN)

VIH

Input HIGH Voltage, (IN, /IN)

Note 6

0.1

VCC+0.3

V

VIL

Input LOW Voltage, (IN, /IN)

Note 6

–0.3

VCC+0.2

V

VIN

Input Voltage Swing

Notes 6, 7

0.1

3.6

V

VDIFF_IN

Differential Input Voltage Swing

Notes 6, 7, 8

0.2

V

|IIN|

Input Current, (IN, /IN)

Note 6

45

mA

VREF-AC

Reference Voltage

Note 9

VCC–1.525 VCC–1.425 VCC–1.325

V

Notes:

1. Permanent device damage may occur if ratings in the “Absolute Maximum Ratings” section are exceeded. This is a stress rating only and functional

operation is not implied for conditions other than those detailed in the operational sections of this data sheet. Exposure to absolute maximum ratings

conditions for extended periods may affect device reliability.

2. The data sheet limits are not guaranteed if the device is operated beyond the operating ratings.

3. Due to the limited drive capability use for input of the same package only.

4. Junction-to-board resistance assumes exposed pad is soldered (or equivalent) to the device's most negative potential on the PCB.

5. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established.

6. Due to the internal termination (see “Input Stucture Buffer”) the input current depends on the applied voltages at IN, /IN and VT inputs. Do not apply

a combination of voltages that causes the input current to exceed the maximum limit.

7. See “Timing Diagram” for VIN definition. VIN (max.) is specified when VT is floating.

8. See “Typical Operating Characteristics” section for VDIFF definition.

9. Operating using VIN is limited to AC-coupled PECL or CML applications only. Connect directly to VT pin.

DC ELECTRICAL CHARACTERISTICS(5)

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