SY89547LMI datasheet(2/11 Pages) MICREL

Part #	SY89547LMI

Description	3.3V, 3.2Gbps DIFFERENTIAL 4:1 LVDS MULTIPLEXER 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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Precision Edge®

SY89547L

Micrel, Inc.

M9999-091809

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

Pin Number

Pin Name

Pin Function

4, 2, 32,

IN0, /IN0,

Differential Inputs: These input pairs are the differential signal inputs to the device. Inputs

30, 27, 25, 23, 21

IN1, /IN1,

accept AC- or DC-coupled signals as small as 100mV. Each pin of a pair internally

IN2, /IN2,

terminates to a VT pin through 50Ω. Note that these inputs will default to an indeterminate

IN3, /IN3

state if left open. Unused differential input pairs can be terminated by connecting one input

to VCC and the complementary input to GND through a 1kΩ resistor. The VT pin is to be

left open in this configuration. Please refer to the “Input Interface Applications” section for

more details.

3, 31, 26, 22

VT0, VT1,

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

VT2, VT3

pin. The VTA0, VTA1, VTB0, VTB1 pins provide a center-tap to a termination network for

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

6, 19

SEL0, SEL1

These single-ended TTL/CMOS-compatible inputs select the inputs to the multiplexers.

Note that these inputs are internally connected to a 25k

Ω pull-up resistor and will default

to a logic HIGH state if left open. Input switching threshold is VCC/2.

1, 5, 8,

VCC

Positive Power Supply: Bypass with 0.1

µF||0.01µF low ESR capacitors.

17, 20, 24, 28, 29

10, 11, 14, 15

Q0, /Q0,

Differential Outputs: These LVDS output pairs are the outputs of the device. They are a

Q1, /Q1

logic function of the INA0, INA1, INB0, INB1 and SELA and SELB inputs. Please refer to

the “Truth Table’” for details. If an output is not used, it must be terminated with 100

Ω

across the differential pair.

7, 9, 12, 13, 16, 18

GND,

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

Exposed pad

PIN DESCRIPTION

PACKAGE/ORDERING INFORMATION

24

23

22

21

20

19

18

17

VCC

IN3

VT3

/IN3

VCC

SEL1

GND

VCC

/IN0

VT0

IN0

VCC

SEL0

GND

VCC

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®

Ordering Information(1)

Package

Operating

Package

Lead

Part Number

Type

Range

Marking

Finish

SY89547LMI

MLF-32

Industrial

SY89547L

Sn-Pb

SY89547LMITR(2)

MLF-32

Industrial

SY89547L

Sn-Pb

SY89547LMG(3)

MLF-32

Industrial

SY89547L with

Pb-Free

Pb-Free bar-line indicator

NiPdAu

SY89547LMGTR(2, 3)

MLF-32

Industrial

SY89547L 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. Recommended for new designs.

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