SY58021U_07 datasheet(3/9 Pages) MICREL

Part #	SY58021U

Description	4GHz, 1:4 LVPECL FANOUT BUFFER/ TRANSLATOR WITH INTERNAL TERMINATION

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Manufacturer	MICREL [Micrel Semiconductor]

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3

Precision Edge®

SY58021U

Micrel, Inc.

M9999-020207

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

Absolute Maximum Ratings(1)

Power Supply Voltage (V

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

Input Voltage (V

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

LVPECL Output Current (I

OUT)

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

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

Source or sink current on VT pin

VT Current .......................................................... ±100mA

Source or sink current on IN, /IN

Input Current ........................................................

±50mA

Source or sink current on V

REF-AC

(4)

VREF Current ....................................................... ±1.5mA

Soldering, (20 seconds) ............................................ 260

°C

Storage Temperature Range (TS) ............ –65°C to +150°C

Operating Ratings(2)

Power Supply Voltage (V

CC) ................. +2.375V to +3.60V

Operating Temperature Range (TA) ........... –40°C to +85°C

Package Thermal Resistance

MLF® (

θ

JA)

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

°C/W

500 lpfm ........................................................... 54

°C/W

MLF® (

ψ

JB)

Junction-to-Board Resistance(3) ...................... 33

°C/W

T

A= –40°C to 85°C

Symbol

Parameter

Condition

Min

Typ

Max

Units

VCC

Power Supply Voltage

VCC = 2.5V

2.375

2.5

2.625

V

VCC = 3.3V

3.0

3.3

3.60

V

ICC

Power Supply Current

No load, VCC = max.

125

160

mA

VIH

Input HIGH Voltage

IN, /IN

V

CC–1.2

V

CC

V

VIL

Input LOW Voltage

IN, /IN

0

V

IH –0.1

V

VIN

Input Voltage Swing

IN, /IN; see Figure 1a.

0.1

1.7

V

DIFF_IN

Differential Input Voltage Swing

IN, /IN; see Figure 1b.

0.2

3.4

V

RIN

IN-to-VT Resistance

40

50

60

Ω

VT IN

IN-to-VT Voltage

1.28

V

VREF-AC

Output Reference Voltage

V

CC–1.30 VCC–1.2

V

CC–1.1

V

INPUT DC ELECTRICAL CHARACTERISTICS(5)

V

CC = 3.3V ±10% or 2.5 ±5%; RL= 50Ω to VCC–2V; TA= –40°C to 85°C, unless otherwise stated.

Symbol

Parameter

Condition

Min

Typ

Max

Units

VOH

Output HIGH Voltage

V

CC–1.145

V

CC–0.895

V

VOL

Output LOW Voltage

V

CC–1.945

V

CC–1.695

V

VOUT

Output Voltage Differential Swing

see Figure 1a.

550

780

1050

mV

VDIFF_OUT

Differential Output Voltage Swing

see Figure 1b.

1100

1560

2100

mV

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. Thermal performance assumes exposed pad is soldered (or equivalent) to the device’s most negative potential on the PCB.

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

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

LVPECL OUTPUT DC ELECTRICAL CHARACTERISTICS(5)

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