SY58030U datasheet(2/11 Pages) MICREL

Part #	SY58030U

Description	ULTRA PRECISION, 400mV DIFFERENTIAL LVPECL 4:1 MUX with 1:2 FANOUT and INTERNAL TERMINATION

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Manufacturer	MICREL [Micrel Semiconductor]

Direct Link	http://www.micrel.com

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2

Micrel, Inc.

M9999-020707

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

Precision Edge®

SY58030U

PACKAGE/ORDERING INFORMATION

24

23

22

21

20

19

18

17

GND

VCC

Q1

/Q1

VCC

NC

SEL1

VCC

IN0

VT0

VREF-AC0

/IN0

IN1

VT1

VREF-AC1

/IN1

1

2

3

4

5

6

7

8

910 11 12 13 14 15 16

32 31 30 29 28 27 26 25

32-Pin MLF® (MLF-32)

Pin Number

Pin Name

Pin Function

1, 4

IN0, /IN0

Differential Input: Each pair accepts AC- or DC-coupled signals as small as 100mV.

5, 8

IN1, /IN1

Each pin of a pair internally terminates to a VT pin through 50ý. Note that these

25, 28

IN2, /IN2

inputs will default to an indeterminate state if left open. If an input is not used, connect one

29, 32

IN3, /IN3

end of the differential pair to ground through a 1ký resistor, and leave the other end to

VCC through a 825ý resistor. Unused VT and VREF-AC pins may also be left floating.

Please refer to the “Input Interface Applications” section for more details.

2, 6, 26, 30

VT0, VT1

Input Termination Center-Tap: Each side of the differential input pair terminates to a VT

VT2, VT3

pin. The VT pins provide a center-tap to the termination network for maximum

interface flexibility. See “Input Interface Applications” section for more details.

15, 18

SEL0, SEL1

This Single-Ended TTL/CMOS compatible input selects the inputs to the multiplexer. Note

that this input is internally connected to a 25ký pull-up resistor and will default to a logic

HIGH state if left open. Input logic threshold is V

CC/2. See “Truth Table” for select control.

14, 19

NC

No Connect.

10, 13, 16

VCC

Positive Power Supply: Bypass with 0.1

µF™ℑ0.01µF low ESR capacitors.

17, 20, 23

11, 12

/Q0, Q0

Differential Outputs: These 100k compatible (internally temperature compensated)

21, 22

/Q1, Q1

LVPECL output pairs are copies of the selected input. Unused output pairs may be left

floating. See “Output Interface” for termination guidelines.

9, 24

GND,

Ground. Ground pin and exposed pad must be connected to the same ground plane.

Exposed Pad

3, 7, 27, 31

VREF-AC0

Reference Voltage: This reference output is equivalent to VCC–1.4V. It is used for

VREF-AC1

AC-coupled inputs. When interfacing to AC input signals, connect VREF-AC directly to the

VREF-AC2

VT pin and bypass with a 0.01µF low ESR capacitor to VCC. See “Input Interface

VREF-AC3

Applications” section. Maximum current sink/source is 0.5mA.

PIN DESCRIPTION

TRUTH TABLE

SEL0

SEL1

0

IN0 Input Selected

0

1

IN2 Input Selected

1

0

IN1 Input Selected

1

IN3 Input Selected

Ordering Information(1)

Package

Operating

Package

Lead

Part Number

Type

Range

Marking

Finish

SY58030UMI

MLF-32

Industrial

SY58030U

Sn-Pb

SY58030UMITR(2)

MLF-32

Industrial

SY58030U

Sn-Pb

SY58030UMG(3)

MLF-32

Industrial

SY58030U with

Pb-Free

Pb-Free bar-line indicator

NiPdAu

SY58030UMGTR(2, 3)

MLF-32

Industrial

SY58030U with

Pb-Free

Pb-Free bar-line indicator

NiPdAu

Notes:

1. Contact factory for die availability. Dice are guaranteed at T

A = 25°C, DC electricals only.

2. Tape and Reel.

3. Pb-Free package recommended for new designs.

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