ICS83940DYI REVISION C MARCH 20, 2013

3

©2013 Integrated Device Technology, Inc.

ICS83940DI Data Sheet

LOW SKEW, 1-TO-18 LVPECL-TO-LVCMOS/LVTTL FANOUT BUFFER

Function Tables

Table 3A. Clock Select Function Table

Table 3B. Clock Input Function Table

NOTE 1: Please refer to the Application Information Section, Wiring the Differential Input to Accept Single-ended Levels.

Control Input

Clock

CLK_SEL

PCLK, nPCLK

LVCMOS_CLK

0

Selected

De-selected

1

De-selected

Selected

Inputs

Outputs

Input to Output Mode

Polarity

CLK_SEL

LVCMOS_CLK

PCLK

nPCLK

Q[0:17]

0–01

LOW

Differential to Single-Ended

Non-Inverting

0–10

HIGH

Differential to Single-Ended

Non-Inverting

0

–

0

Biased; NOTE 1

LOW

Single-Ended to Single-Ended

Non-Inverting

0

–

1

Biased; NOTE 1

HIGH

Single-Ended to Single-Ended

Non-Inverting

0

–

Biased; NOTE 1

0

HIGH

Single-Ended to Single-Ended

Inverting

0

–

Biased; NOTE 1

1

LOW

Single-Ended to Single-Ended

Inverting

10––

LOW

Single-Ended to Single-Ended

Non-Inverting

11––

HIGH

Single-Ended to Single-Ended

Non-Inverting