EVM142AHF datasheet(4/19 Pages) SEMTECH

4 / 19 page

 2000 Semtech Corp.

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EDGE HIGH-PERFORMANCE PRODUCTS

Edge142

Circuit Description

Chip Overview

The Edge142 is a 4 X 2 cross point switch and deskew

element, offering an 1.5 ns delay (Tspan), where the

VDELAY inputs adjust the overall propagation delay of

the part. In addition, the part supports a separate falling

edge delay of 300 ps (Tfall), where the VFALL inputs

control the falling edge delay.

Two additional outputs, which are selectable from either

OUT0 or OUT1, are provided. These outputs are useful

when attempting to fanout a selected input to multiple

destination without using and external buffer. All output

signals may be enabled or disabled.

The Edge142 is designed to be monotonic and very

stable. Figure 1 shows a simplified block diagram.

Figure 1. Edge142 Block Diagram

VDELAY0

VFALL0

OUT0 / 0*

OUT1 / 1*

MUX OUT0 / 0*

MUX OUT1 / 1*

VDELAY1

VFALL1

IN0 / 0*

IN1 / 1*

IN2 / 2*

IN3 / 3*

∆ T

VMID1

MUX1 SEL

S11 S10

S01 S00

VMID0

MUX0 SEL EN* MUX EN

EVM142AHF Datasheet(PDF) 4 Page - Semtech Corporation