8312AYI

http://www.icst.com/products/hiperclocks.html

REV. A OCTOBER 23, 2003

1

Integrated

Circuit

Systems, Inc.

ICS8312I

The ICS8312I is a low skew, 1-to-12 LVCMOS /

LVTTL Fanout Buffer and a member of the

HiPerClockS™family of High Performance Clock

Solutions from ICS. The ICS8312I single ended

clock input accepts LVCMOS or LVTTL input lev-

els. The low impedance LVCMOS outputs are designed to

drive 50

Ω series or parallel terminated transmission lines.The

effective fanout can be increased from 12 to 24 by utilizing

the ability of the outputs to drive two series terminated lines.

The ICS8312I is characterized at full 3.3V, 2.5V, and 1.8V, or

mixed 3.3V core/2.5V, 3.3V core/1.8V and 2.5V core/1.8V out-

put operating supply modes. Guaranteed output and part-to-

part skew characteristics along with the 1.8V output capa-

bilities makes the ICS8312I ideal for high performance, single

ended applications that also require a limited output voltage.

• 12 LVCMOS / LVTTL outputs

• LVCMOS / LVTTL clock input

• Maximum output frequency: 250MHz

• Output skew: 160ps (maximum)

• Operating supply modes: Core/Output

3.3V/3.3V

2.5V/2.5V

1.8V/1.8V

3.3V/2.5V

3.3V/1.8V

2.5V/1.8V

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

HiPerClockS™

ICS

32 31 30 29 28 27 26 25

9

10 11 12 13 14 15 16

1

2

3

4

5

6

7

8

24

23

22

21

20

19

18

17

Q4

Q5

GND

Q6

Q7

GND

GND

CLK_EN

CLK

GND

OE

GND

ICS8312I

32-Lead LQFP

7mm x 7mm x 1.4mm body package

Y Pacakge

Top View

Q0:Q11

CLK_EN

CLK

OE

nD

Q

LE

12