Micrel, Inc.

SY56216R

November 2010

3

M9999-111810-A

Pin Description

Pin Number

Pin Name

Pin Function

16,1

4,5

IN0, /IN0

IN1, /IN1

27 inches 6 mil FR4 stripline transmission line are then terminated the differential input .

Each input pin internally terminates with 50Ω to the VT pin.

2,3

VT0, VT1

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

This pin provides a center-tap to a termination network for maximum interface flexibility. An

internal high-impedance resistor divider biases VT to allow input AC coupling. For AC

coupling, bypass VT with 0.01µF low-ESR capacitor to VCC. See “Interface Applications”

subsection and Figure 2a.

15,6

EQ0, EQ1

Three level inputs for equalization control. Low, Float, High

7

VCC

pins as possible. Supplies input and core circuitry.

8,13

VCCO

possible. Supplies the output buffers.

14

GND,

Exposed pad

Ground: Exposed pad must be connected to a ground plane that is the same potential as the

ground pins.

12,11

10,9

Q0, /Q0

Q1, /Q1

CML Differential Output Pairs: Differential buffered copy of the input signal. The output swing

is typically 390mV. See “Interface Applications” subsection for termination information.