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Semtech Corporation
Semtech Corporation

E142AHF Datasheet Preview

E142AHF Datasheet

Per Pin timing Deskew w 4x2 Cross Point Switch

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E142AHF pdf
EDGE HIGH-PERFORMANCE PRODUCTS
Description
Edge142
Per Pin timing Deskew w 4x2
Cross Point Switch
Features
The Edge142 is a 4 X 2 cross point switch with output
edge deskew capability. Manufactured in a high
performance bipolar process, it is designed primarily for
channel deskew applications in VLSI and Mixed-Signal
test equipment.
Any of the four input signals may be selected as the
source for either output. The 142 performs test head
multiplexing, adjacent channel multiplexing, and signal
buffering for both the drive and receive signals, in addition
to timing deskew.
• Very Narrow (<1 ns) Pulse Width Capability
• Fmax > 850 MHz
• Independent Delay Adjustments for Positive and
Negative Transitions
• Delay Range of 1.5 ns
• Trailing Edge Adjust Range of 300 ps
• Small Footprint: 52-pin MQFP Package
(10 X 10 mm) with Internal Heat Spreader or
Die Form
The delay value (and resolution) is controlled via an
external voltage DAC. The delay element is designed
specifically to be monotonic and very stable while
delaying a very narrow pulse over a limited delay range.
Applications
The part offers separate delays for rising vs. falling edges.
The rising edge delay range is 1.5 ns and the falling
edge adjustment range is 300 ps.
The Edge142 is also well suited for 1:2 or 1:4 signal
fanout applications that require:
- multiple signal sources
- output enable / disable
- timing deskew on the output
signals.
• Automatic Test Equipment
– Per pin deskew in VLSI, Mixed-Signal, and Memory
Testers
– Clock Distribution with timing adjustment
Functional Block Diagram
VDELAY 0
VFALL 0
IN0 / 0*
IN1 / 1*
IN2 / 2*
IN3 / 3*
4X2
T
T
OUT0 / 0*
MUX OUT0 / 0*
MUX OUT1 / 1*
OUT1 / 1*
Revision 1, February 14, 2000
VFALL 1
VDELAY 1
1
www.semtech.com



Semtech Corporation
Semtech Corporation

E142AHF Datasheet Preview

E142AHF Datasheet

Per Pin timing Deskew w 4x2 Cross Point Switch

No Preview Available !

E142AHF pdf
Edge142
EDGE HIGH-PERFORMANCE PRODUCTS
PIN Description
Pin Name
Digital
IN0, IN0*
IN1, IN1*
IN2, IN2*
IN3, IN3*
OUT0, OUT*
OUT1, OUT1*
MUX OUT0, 0*
MUX OUT1, 1*
S00, S01
S10, S11
MUX0 SEL
MUX1 SEL
EN*
MUX EN
Analog
VDELAY0
VDELAY1
VFALL0
VFALL1
VMID0
VMID1
REXT1
REXT2
COMP1,
COMP2
TDP, TDN
Power
GND
VEE
Pin #
Description
41, 42
44, 45
48, 47
51, 50
26, 25
14, 15
23, 22
17, 18
32, 31
8, 9
30
10
29
11
The multiplexer input signals. (Differential digital inputs.)
The selected and delayed output signals. (Differential ECL compatible
outputs.)
Selected monitor outputs. (Differential ECL compatible levels.)
Single-ended 10KH ECL compatible inputs which select the channel 0
and channel 1 source.
Single-ended 10KH ECL compatible inputs which select the two output
monitor sources.
Single-ended 10KH ECL compatible input which enables the delayed
outputs.
Single-ended 10KH ECL compatible input which enables the monitor
outputs.
39
1
37
3
38
2
36
4
35
5
21, 19
Analog voltage inputs which control the amount of propagation delay for
each channel.
Analog voltage inputs which control the amount of falling edge delay for
each channel.
Analog voltage inputs which control the amount of pulse width
compensation for each channel.
Analog input current used to establish the bias current for the VDELAY,
VFALL, and VMIDinputs.
Analog input current used to establish the bias level for the delay cells.
Op Amp compensation capacitors.
Positive and negative terminals to the thermal diode string.
6, 12, 13, 16,
24, 27, 28, 34,
40, 43, 49, 52
Device ground (positive device supply).
7, 20, 33, 46
2000 Semtech Corp.
2
www.semtech.com


Part Number E142AHF
Description Per Pin timing Deskew w 4x2 Cross Point Switch
Maker Semtech Corporation
Total Page 19 Pages
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