8534AY-01

www.icst.com/products/hiperclocks.html

REV. A NOVEMBER 19, 2004

1

Integrated

Circuit

Systems, Inc.

ICS8534-01

The ICS8534-01 is a low skew, 1-to-22 Differen-

tial-to-3.3V LVPECL Fanout Buffer and a member

of the HiPerClockS™Family of High Performance

Clock Solutions from ICS.The ICS8534-01 has two

selectable clock inputs. The CLK, nCLK pair can

accept most standard differential input levels.The PCLK, nPCLK

pair can accept LVPECL, CML, or SSTL input levels. The de-

vice is internally synchronized to eliminate runt pulses on the

outputs during asynchronous assertion/deassertion of the OE

pin. The ICS8534-01’s low output and part-to-part skew char-

acteristics make it ideal for workstation, server, and other high

performance clock distribution applications.

• 22 differential LVPECL outputs

• Selectable differential CLK, nCLK or LVPECL clock inputs

• CLK, nCLK pair can accept the following differential

input levels: LVPECL, LVDS, LVHSTL, HCSL, SSTL

• PCLK, nPCLK supports the following input types:

LVPECL, CML, SSTL

• Maximum output frequency: 500MHz

• Output skew: 100ps (maximum)

• Translates any single-ended input signal (LVCMOS, LVTTL,

GTL) to LVPECL levels with resistor bias on nCLK input

• Additive phase jitter, RMS: 0.04ps (typical)

• 3.3V supply mode

• 0°C to 85°C ambient operating temperature

HiPerClockS™

ICS

CLK

nCLK

PCLK

nPCLK

Q0:Q21

nQ0:nQ21

LE

Q

D

CLK_SEL

OE

0

1

22

22

64-Lead TQFP E-Pad

10mm x 10mm x 1.0mm package body

Y package

Top View

48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33

1 2 3 4 5 6

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64

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ICS8534-01

Q14

nQ14

Q15

nQ15

Q16

nQ16

Q17

nQ17

Q18

nQ18

Q19

nQ19

Q20

nQ20

nQ6

Q6

nQ5

Q5

nQ4

Q4

nQ3

Q3

nQ2

Q2

nQ1

Q1

nQ0

Q0