April 2007

ASM2I9940L

rev 1.2

Low Voltage 1:18 Clock Distribution Chip

3 of 13

Notice: The information in this document is subject to change without notice.

Table 3. Pin Configuration

Pin #

Pin Name

I/O

Type

Function

5

6

PECL_CLK

PECL_CLK

Input

LVPECL

LVPECL Clock Inputs

3

LVCMOS_CLK

Input

LVCMOS

LVCMOS Clock Input

4

LVCMOS_CLK_Sel

Input

LVCMOS

Selects either LVPECL or

LVCMOS input as Clock Source

32,31,30,28,27,26,24,23,22,

20,19,18,15,14,13,11,10,9

Q0–Q17

Output

LVCMOS

Clock Outputs

2

GNDI

Supply

Core Negative Power Supply

1,12,17,25

GNDO

Supply

Output Negative Power Supply

7,21

Supply

Core Positive Power Supply

8, 16,29

Supply

Output Positive Power Supply

Table 4. Absolute Maximum Ratings

1

Symbol

Parameter

Min

Max

Unit

Supply Voltage

-0.3

3.6

V

Input Voltage

-0.3

V

Input Current

±20

mA

Storage Temperature Range

-40

125

°C

Max. Soldering Temperature (10 sec)

260

°C

Static Discharge Voltage

(As per JEDEC STD22- A114-B)

2

KV

Note:1. These are stress ratings only and are not implied for functional use. Exposure to absolute maximum ratings for prolonged periods of time may affect

device reliability.