E142AHF Datasheet, PDF (9/19 Pages) Semtech Corporation – Per Pin timing Deskew w 4x2 Cross Point Switch

Edge142
EDGE HIGH-PERFORMANCE PRODUCTS
Application Information
Comparator Return Path
The Edge142 is designed specifically to buffer, multiplex,
and deskew multiple comparator paths from multiple test
heads to the timing generators located back in the tester
mainframe. The Edge142 provides a one IC solution
between the pin electronics and the error strobing
circuitry. Most importantly, the Edge142 performs all of
the timing deskew functions, thus removing the burden
of timing compensation from the error section. By
performing the calibration with the Edge142, there may
be some improvement in the edge to edge retrigger time
inside the timing generator.
Chan N
Device Under
Test
Comp A
Test Head 1
Device Under
Test
Comp B
Comp A
Chan N + 1
Comp B
Chan N
Device Under
Test
Comp A
Test Head 2
Device Under
Test
Comp B
Comp A
Chan N + 1
Comp B
TIMING BOARD
Edge142
4X2
Comp A
Timing
Generator
Comp B
Edge 142 Functions
• Channel Multiplexing
• Test Head Multiplexing
• Comp A vs. Comp B
Deskew
• Chan N vs. Chan
N + 1 Deskew
• Test Head 1 vs. 2
Deskew
• Rising vs. Falling
Edge Deskew
• Buffer Signals into
Timing Board
Performance Benefits
• All Timing Lines
– Point to Point Routing
– Fully Differential
• Single IC solution
between P/E and TG
Edge142
4X2
Comp A
Timing
Generator
Comp B
 2000 Semtech Corp.
9
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