Low Skew, 1-to-16 Differential-to-

LVDS, Clock Distribution Chip

ICS8516I

ICS8516I REVISION B SEPTEMBER 10, 2009

1

©2009 Integrated Device Technology, Inc.

DATA SHEET

GENERAL DESCRIPTION

The ICS8516I is a low skew, high performance 1-

to-16 Differential-to-LVDS Clock Distribution Chip

and a member of the HiPerClockS™ family of High

Perfor mance Clock Solutions from IDT. The

ICS8516I CLK, nCLK pair can accept any differ-

ential input levels and translates them to 3.3V LVDS output

levels. Utilizing Low Voltage Differential Signaling (LVDS), the

ICS8516I provides a low power, low noise, point-to-point solu-

tion for distributing clock signals over controlled impedances

of 100

Ω.

Dual output enable inputs allow the ICS8516I to be used in a

1-to-16 or 1-to-8 input/output mode. Guaranteed output and

part-to-part skew specifications make the ICS8516I ideal for

those applications demanding well defined performance and

repeatability.

BLOCK DIAGRAM

PIN ASSIGNMENT

FEATURES

• Sixteen Differential LVDS outputs

• CLK, nCLK pair can accept the following differential

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

• Maximum output frequency: 700MHz

• Translates any differential input signal (LVPECL, LVHSTL,

SSTL, DCM) to LVDS levels without external bias networks

• Translates any single-ended input signal to LVDS

with resistor bias on nCLK input

• Multiple output enable inputs for disabling unused

outputs in reduced fanout applications

• LVDS compatible

• Output skew: 65ps (maximum)

• Part-to-part skew: 550ps (maximum)

• Propagation delay: 2.4ns (maximum)

• 3.3V operating supply

• -40°C to 85°C ambient operating temperature

• Available in both standard (RoHS 5) and lead-free (RoHS 6)

packages

HiPerClockS™

ICS

48-Lead LQFP

7mm x 7mm x 1.4mm body package

Y Package

Top View

OE1

OE2

CLK

nCLK

Q0

nQ0

Q1

nQ1

Q2

nQ2

Q3

nQ3

Q4

nQ4

Q5

nQ5

Q6

nQ6

Q7

nQ7

Q15

nQ15

Q14

nQ14

Q13

nQ13

Q12

nQ12

Q11

nQ11

Q10

nQ10

Q9

nQ9

Q8

nQ8

48 47 46 45 44 43 42 41 40 39 38 37

13 14 15 16 17 18 19 20 21 22 23 24

1

2

3

4

5

6

7

8

9

10

11

12

36

35

34

33

32

31

30

29

28

27

26

25

VDD

nQ5

Q5

nQ4

Q4

VDD

GND

nQ3

Q3

nQ2

Q2

VDD

VDD

nQ10

Q10

nQ11

Q11

VDD

GND

nQ12

Q12

nQ13

Q13

VDD

ICS8516I