Micrel, Inc.

SY89854U

June 2005

M9999-060905

2

Ordering Information

(1)

Part Number

Package Type

Operating

Range

Package Marking

Lead

Finish

SY89854UMG

MLF-16

Industrial

854U with Pb-free bar-line indicator

Pb-Free

NiPdAu

SY89854UMGTR

(2)

MLF-16

Industrial

854U with Pb-free bar-line indicator

Pb-Free

NiPdAu

Notes:

2. Tape and Reel.

Pin Configuration

16-Pin MLF™ (MLF-16)

Pin Description

Pin Number

Pin Name

Pin Function

1, 4

IN, /IN

Differential Input: This input pair is the signal to be buffered. These inputs accept

of this pair internally terminates to a VT pin through 50

Ω. Note that this input will

default to an indeterminate state if left open. Please refer to the “Input Interface

Applications” section for more details.

2

VT

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

to this pin. The VT pin provides a center-tap to a termination network for

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

details.

8,13

VCC

Positive Power Supply. Bypass with 0.1

µF⎪⎪0.01µF low ESR capacitors as close

to the VCC pin as possible.

15, 14

12, 11

10, 9

7, 6

Q0, /Q0

Q1, /Q1

Q2, /Q2

Q3, /Q3

Differential 100K LVPECL Output: These LVPECL outputs are the precision, low

skew copies of the input signal. Terminate with 50

pairs may be left floating with no impact on jitter. See “Output Interface

Applications” section.

5, 16

GND,

Exposed Pad

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

plane.

3

VREF-AC

0.01

“Input Interface Applications” section for more details.