ABB0205

Low Skew Output Buffer

30332 Esperanza., Rancho Santa Margarita, Ca 92688 Ph: 949-546-8000 Fax: 949-546-8001 www.Abracon.com 03/21/05 Page 1

FEATURES

• Frequency range 25 ~ 60MHz.

• Internal phase locked loop will allow spread spec-

trum modulation on reference clock to pass to the

outputs (up to 100kHz SST modulation).

• Zero input - output delay.

• Less than 700 ps device - device skew.

• Less than 250 ps skew between outputs.

• Less than 150 ps cycle - cycle jitter.

• Output Enable function tri-state outputs.

• 3.3V operation.

• Available in 8-Pin 150mil SOIC.

DESCRIPTION

The ABB0205 is a high performance, low skew, low

jitter zero delay buffer designed to distribute high

speed clocks and is available in 8-pin SOIC package. It

has four outputs that are synchronized with the input.

The synchronization is established via CLKOUT feed

back to the input of the PLL. Since the skew between

the input and output is less than

±350 ps, the device

acts as a zero delay buffer.

PIN CONFIGURATION

Remark

If REF clock is stopped for more than 10us after it has already been

provided to the chip, and after power-up, the output clocks will

disappear. In that instance, a full power-up reset is required in order

to reactivate the output clocks.

BLOCK DIAGRAM

1

2

3

4

REF

5

6

7

8

CLK2

CLK1

GND

CLKOUT

CLK4

VDD

CLK3

PLL

REF

CLKOUT

CLK1

CLK2

CLK3

CLK4