2

SY58027U

Micrel, Inc.

M9999-082707

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

PACKAGE/ORDERING INFORMATION

Pin Number

Pin Name

Pin Function

25, 28,

INA0, /INA0,

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

29, 32,

INA1, /INA1,

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

1, 4,

INB0, /INB0,

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

5, 8

INB1, /INB1

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

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

more details.

26, 30, 2, 6

VTA0 , VTA1,

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

VTB0, VTB1

pin. Each VT pin provides a center-tap to a termination network for maximum interface

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

18, 15

SELA, SELB

Bank A, Bank B Input Channel Select (TTL/CMOS): These TTL/CMOS-compatible inputs

select the inputs to the multiplexers. These inputs are internally connected to a 25ký

pull-up resistor and will default to a logic HIGH state if left open. Input switching threshold

27, 31, 3, 7

VREF-ACA0,

VREF-ACA1,

VREF-ACB0,

current source or sink is 0.5mA. See “Input Interface Applications” section.

VREF-ACB1

10, 13, 16,

VCC

Positive Power Supply: Bypass with 0.1µF

™ℑ0.01µF low ESR capacitors.

17, 20, 23

22, 21,

QA, /QA,

Differential 100k LVPECL Outputs: MUX A and MUX B selected LVPECL outputs.

12, 11

QB, /QB

See “Output Interface Applications” section for termination. Refer to the “Truth Table” for

logic operation.

9, 24

GND,

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

Exposed pad

14, 19

NC

Not connected.

PIN DESCRIPTION

24

23

22

21

20

19

18

17

GND

VCC

QA

/QA

VCC

NC

SELA

VCC

INB0

VTB0

VREF-ACB0

/INB0

INB1

VTB1

VREF-ACB1

/INB1

1

2

3

4

5

6

7

8

910 11 12 13 14 15 16

32 31 30 29 28 27 26 25

Package

Operating

Package

Lead

Part Number

Type

Range

Marking

Finish

SY58027UMI

MLF-32

Industrial

SY58027U

Sn-Pb

MLF-32

Industrial

SY58027U

Sn-Pb

MLF-32

Industrial

SY58027U with

Pb-Free

Pb-Free bar-line indicator

NiPdAu

MLF-32

Industrial

SY58027U with

Pb-Free

Pb-Free bar-line indicator

NiPdAu

Notes:

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

2. Tape and Reel.

3. Pb-Free package recommended for new designs.