E142AHF Datasheet, PDF (4/19 Pages) Semtech Corporation – Per Pin timing Deskew w 4x2 Cross Point Switch

Edge142
EDGE HIGH-PERFORMANCE PRODUCTS
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.
IN0 / 0*
IN1 / 1*
IN2 / 2*
IN3 / 3*
S01 S00 VFALL0 VMID0 VDELAY0
MUX0 SEL EN* MUX EN
0
1
∆T
∆T
2
0
3
1
1
3
0
2
∆T
∆T
1
0
S11 S10 VFALL1 VMID1 VDELAY1
MUX1 SEL
 2000 Semtech Corp.
Figure 1. Edge142 Block Diagram
4
OUT0 / 0*
MUX OUT0 / 0*
MUX OUT1 / 1*
OUT1 / 1*
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