Edge142
Per Pin timing Deskew w 4x2
Cross Point Switch
EDGE HIGH-PERFORMANCE PRODUCTS
Description
Features
• 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 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.
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.
• Automatic Test Equipment
– Per pin deskew in VLSI, Mixed-Signal, and Memory
Testers
– Clock Distribution with timing adjustment
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.
Functional Block Diagram
VDELAY 0
VFALL 0
IN0 / 0*
∆T
OUT0 / 0*
2X2
IN1 / 1*
4X2
MUX OUT0 / 0*
MUX OUT1 / 1*
IN2 / 2*
IN3 / 3*
∆T
OUT1 / 1*
VFALL 1
VDELAY 1
Revision 1, February 14, 2000
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Edge142
EDGE HIGH-PERFORMANCE PRODUCTS
PIN Description
Pin Name
Pin #
Description
41,
44,
48,
51,
The multiplexer input signals. (Differential digital inputs.)
Digital
IN0,
IN1,
IN2,
IN3,
IN0*
IN1*
IN2*
IN3*
42
45
47
50
OUT0, OUT*
OUT1, OUT1*
26, 25
14, 15
The selected and delayed output signals. (Differential ECL compatible
outputs.)
MUX OUT0, 0*
MUX OUT1, 1*
23, 22
17, 18
Selected monitor outputs. (Differential ECL compatible levels.)
S00, S01
S10, S11
32, 31
8, 9
Single-ended 10KH ECL compatible inputs which select the channel 0
and channel 1 source.
MUX0 SEL
MUX1 SEL
30
10
Single-ended 10KH ECL compatible inputs which select the two output
monitor sources.
EN*
29
Single-ended 10KH ECL compatible input which enables the delayed
outputs.
MUX EN
11
Single-ended 10KH ECL compatible input which enables the monitor
outputs.
VDELAY0
VDELAY1
39
1
Analog voltage inputs which control the amount of propagation delay for
each channel.
VFALL0
VFALL1
37
3
Analog voltage inputs which control the amount of falling edge delay for
each channel.
VMID0
VMID1
38
2
Analog voltage inputs which control the amount of pulse width
compensation for each channel.
REXT1
36
Analog input current used to establish the bias current for the VDELAY,
VFALL, and VMIDinputs.
REXT2
4
Analog input current used to establish the bias level for the delay cells.
COMP1,
COMP2
35
5
TDP, TDN
21, 19
Analog
Op Amp compensation capacitors.
Positive and negative terminals to the thermal diode string.
Power
GND
6, 12, 13, 16,
24, 27, 28, 34,
40, 43, 49, 52
VEE
7, 20, 33, 46
2000 Semtech Corp.
Device ground (positive device supply).
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Edge142
VDELAY0
VMID0
VFALL0
REXT1
COMP1
GND
VEE
S00
S01
MUX0 SEL
EN*
GND
GND
39
38
37
26
35
34
33
32
31
30
29
28
27
EDGE HIGH-PERFORMANCE PRODUCTS
PIN Description (continued)
20
VEE
IN2*
47
19
TDN
IN2
48
18
MUX OUT1*
GND
49
17
MUX OUT1
IN3*
50
16
GND
IN3
51
15
OUT1*
GND
52
14
OUT1
13
46
GND
VEE
12
TDP
GND
21
11
45
MUX EN
IN1*
10
MUX PUT0*
MUX1 SEL
22
9
44
S11
IN1
8
MUX OUT0
S10
23
7
43
VEE
GND
6
GND
GND
24
5
42
COMP2
IN0*
4
OUT0*
REXT2
25
3
41
VFALL1
IN0
2
OUT0
VMID1
26
1
40
VDELAY1
GND
52-Pin MQFP 10mm x 10mm
with Internal Heat Spreader
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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.
S01 S00
VFALL0 VMID0
VDELAY0
MUX0 SEL EN* MUX EN
IN0 / 0*
0
IN1 / 1*
1
∆T
IN2 / 2*
OUT0 / 0*
∆T
2
0
MUX OUT0 / 0*
IN3 / 3*
3
1
1
3
MUX OUT1 / 1*
0
2
∆T
∆T
OUT1 / 1*
1
0
MUX1 SEL
S11 S10
VFALL1 VMID1 VDELAY1
Figure 1. Edge142 Block Diagram
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Edge142
EDGE HIGH-PERFORMANCE PRODUCTS
Circuit Description (continued)
Input Multiplexer
Output Enable
The Edge142 offers a 4 X 2 cross point switch in which
one of four input signals are selected to two independent
outputs. Each output signal’s propagation delay and
pulse width may then be adjusted via external control.
Both the output and multiplexer output signals may be
enabled or disabled, as documented below.
EN*
OUT/OUT*
MUX EN
MUX(0,1)OUT
0
Active
0
0
1
0
1
Active
The truth table below documents the multiplexer
functionality. Notice that there are no restrictions
between the selection of channel 0 and channel 1.
Propagation Delay Adjust
SEL01
SEL00
OUT0
SEL11
SEL10
OUT1
0
0
IN0
0
0
IN0
0
1
IN1
0
1
IN1
1
0
IN2
1
0
IN2
1
1
IN3
1
1
IN3
The Edge142 supports two independent delay functions,
which are described in the table below.
Tpd+
Tpd-
VDELAY
1.5 ns
1.5 ns
VFALL
0 ps
300 ps
Output Multiplexer
The Edge142 provides MUX OUT0 / MUX OUT0* and
MUX OUT1 / MUX OUT1*, additional buffered differential
output signals. These signals are selected from OUT0
or OUT1, depending on the state of MUX SEL, as indicated
in the table below.
MUX(0,1) SEL
MUXOUT0
MUXOUT1
0
OUT0 / OUT0*
OUT1 / OUT1*
1
OUT1 / OUT1*
OUT0 / OUT0*
The MUX OUT signals allow either of the delayed outputs
to be sent to an alternative destination without having
to daisy chain the outputs to multiple destinations. This
feature permits point to point routing of all critical timing
signals in an effort to maintain the cleanest transmission
lines for these signals.
VDELAY controls the propagation delay of both the rising
and falling edge (see Figure 2). An input signal is
selected and then delayed by some programmable
amount (Tspan) determined by the analog input VDELAY.
The rising and falling edges are delayed equally. The
propagation delay for a rising and a falling edge is defined
as
Tpd+, Tpd- = Tpd(nom) + Tspan
where Tpd(nom) is the propagation delay of the part
with zero programmed delay, and Tspan is the additional
delay programmed via the VDELAY input. Notice that
Tspan can be either positive or negative, depending on
the nominal biasing of VDELAY, thus allowing bidirectional
propagation delay adjustment. The transfer function
for Tspan vs. VDELAY is shown in Figure 4.
TPD min
The MUX OUT signals also provide a method for sending
one common selected input signal to two independent
destinations. This feature is useful when fanning out
driver data and driver enable signals to multiple test
heads.
INPUT
TPD min
OUTPUT
(VDELAY = +0.1V)
Tspan
Tspan
OUTPUT
(VDELAY = –1.3V)
Figure 2. VDELAY Control
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Edge142
EDGE HIGH-PERFORMANCE PRODUCTS
Circuit Description (continued)
Falling Edge Adjust
Default Conditions
VFALL allows independent adjustment of the falling edge
(see Figure 3). The propagation delay for a falling edge
is defined as
All digital inputs have either an internal pull up (to ground)
or pull down (to VEE) resistor (~50 KΩ) to protect against
floating inputs migrating to an indeterminant state. All
differential timing inputs are pulled to a logical zero state.
All operating mode control inputs are pulled down to a
logical zero. The mux select and mux enable inputs
have pull down resistors to VEE. And the output enable
is pulled up to ground.
Tpd- = Tpd(nom) + Tspan + Tfall
where Tfall is defined as the additional delay incurred by
adjusting the VFALL input. Notice that Tfall can be either
positive or negative over a ± 150 ps range, depending
on where VMID is set. This flexibility allows the part to
either expand or contract an input signal .
The following chart summarizes the internal state of the
digital inputs.
Notice also that Tpd+ is a function of VDELAY only, while
Tpd- is a function of VDELAY and VFALL. The transfer
function for Tspan vs. VDELAY is shown in Figure 4. The
transfer function for Tfall vs. VFALL is shown in Figure 5.
Input
VMID
VMID is used in conjuction with VFALL to remove any
systematic pulse width expansion or contraction. VMID
and VFALL are differential analog voltage inputs which
affect the falling edge delay.
When VFALL equals VMID, there will be no programmed
pulse width variation between the input and the output
signal. It is the difference between VMID and VFALL
that expands or contracts a pulse.
Internal Resistor
IN0, IN1, IN2, IN3
Pull Down to VEE
IN0*, IN1*, IN2*, IN3*
Pull up to GND
S00, S10, S01, S11
Pull Down to VEE
MUX0 SEL, MUX1 SEL
Pull Down to VEE
MUX EN
Pull Down to VEE
EN*
Pull up to GND
However, despite the internal resistors providing a known
default condition, it is recommended that no unused
inputs be left floating.
VMID should be statically established at the midpoint of
the voltage swing of VFALL.
INPUT
VFALL = –1.3V
VFALL = +0.1V
Programming Sequence
VDELAY, in addition to affecting the placement of the
rising edge, also affects the falling edge. Therefore, when
calibrating a system, VDELAY should be adjusted first.
As VFALL affects only the falling edge, it should be
adjusted after VDELAY is established.
OUTPUT
(–1.3V < VDELAY < +0.1V)
TPDmin + Tspan
TPDmin + Tspan + Tfall
Figure 3. Falling Edge Control
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Edge142
EDGE HIGH-PERFORMANCE PRODUCTS
Circuit Description (continued)
Edge142 Tpd+ Span vs. VDELAY; VFALL and VMID=-0.6V
1.6
1.4
Tspan [ns]
1.2
1
0.8
0.6
0.4
0.2
0
0.1
0
-0.1 -0.2 -0.3 -0.4 -0.5 -0.6 -0.7 -0.8 -0.9
-1
-1.1 -1.2 -1.3
VDELAY [V]
Figure 4. VDELAY Tranfer Function
Edge142 Tpd- Span vs. VFALL; VDELAY and VMID=-0.5V
200
150
∆Tpd- [ps]
100
50
0
-50
-100
-150
-200
0.1
0
-0.1 -0.2 -0.3 -0.4 -0.5 -0.6 -0.7 -0.8 -0.9
-1
-1.1 -1.2 -1.3
VDELAY [V]
Figure 5. VFALL Transfer Function
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Edge142
EDGE HIGH-PERFORMANCE PRODUCTS
Circuit Description (continued)
Analog Delay Inputs
Compensation Pins
VDELAY, VFALL, and VMID are analog voltage inputs which
control the delay of the rising and falling edge. All three
inputs may vary from +0.1V (minimum delay) to -1.3V
(maximum delay).
COMP1 and COMP2 are Op Amp compensation pins.
For proper Edge142 functionality, these pins require a
.1 µF capacitor to ground.
VMID should be permanently set to the middle of the
overall voltage range spanned by VFALL (~ -0.6V). A
fixed resistor to ground will usually suffice. The exact
setting of VFALL will vary depending on the required delay
range of the falling edge.
Thermal Monitor
These inputs are designed to sink a constant input
current, typically 1.0 mA (with REXT1 = 2.94 KΩ), over
their operating range from +0.1V to -1.3V. Any voltage
DAC used to drive these inputs directly needs to source
at least 1.0 mA. Any current DAC used needs to factor
in the constant 1.0 mA input current.
The Edge142 includes an on-chip thermal monitor
accessible through the pins TDP and TDN. These nodes
connect to five diodes in series (see Figure 6) and may
be used to accurately measure the junction temperature
at any time.
TDP
Bias Current
The equation used to establish the VDELAY, VMID, and
VFALL input currents is:
I (VFALL, VDELAY, VMID) = 3.0V / REXT1.
Temperature coefficient = –10 mV/ C
˚
The fact that the VDELAY, VFALL, and VMID inputs have
internal current sources allows a voltage DAC capable
of generating only positive voltages and an external
resistor network to be pulled down to the Edge142's
negative input voltage compliance. These current
sources are designed to be constant over temperature,
so changes in system temperature will not translate into
a delay voltage shift.
Using a different REXT1 will program a different input
current. However, the value of this current does not
affect deskew range or performance. The ability to vary
this current allows a more flexible interface to a variety
of DAC programming techniques.
TDN
Figure 6. Thermal Diode String
An external bias current of 100 µA is injected through
the string, and the measured voltage corresponds to a
specific junction temperature with the following equation:
TJ(˚C) = {(V(TDP) – V(TDN)) / 5 – .7} / (-.00208).
VDELAY, VFALL, and VMID all require current flow. Do
NOT leave any of these input pins floating. If an
application does not require any falling edge delay,
connect all VDELAY and VMID pins to ground.
2000 Semtech Corp.
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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.
TIMING BOARD
Chan N
Device Under
Test
Comp A
Edge142
Comp A
4X2
Timing
Generator
Comp B
Comp B
Test Head 1
Device Under
Test
Comp A
Edge 142 Functions
Comp B
Chan N + 1
Chan N
Device Under
Test
Comp A
• 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
Comp B
• Single IC solution
between P/E and TG
Test Head 2
Device Under
Test
Comp A
Comp A
Edge142
4X2
Timing
Generator
Comp B
Comp B
Chan N + 1
2000 Semtech Corp.
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Edge142
EDGE HIGH-PERFORMANCE PRODUCTS
Application Information (continued)
Driver Fan Out
The Edge142 is also designed to support the fanning
out and deskewing of driver data, driver enable, and load
enable
signals to multiple test heads. By controlling
PIN Descriptions
the multiplexer and output enable signals, the signals
may be routed to either test head.
By using the Edge142 for timing calibration, the timing
generator can generate “pure” timing signals, regardless
of the timing errors associated with driving one test head
vs. another. Removing the need for the timing generator
to perform the deskew function, the restriction on
consecutive edges may be improved.
TEST HEAD 1
Channel N
Device Under
Test
Edge142
Data
Timing
Generator
Dvr Enable
Mux Out 1
Out 1
Out 2
Mux Out 0
TEST HEAD 2
Edge 142 Functions
Channel N
• Test Head to Test Head Deskew
– TG restrictions on edge
regeneration improved
• Driver Data vs. Enable Deskew
• Rising vs. Falling Edge Deskew
• Test Head Multiplexing
• Cable Driver
Device Under
Test
Performance Benefits
• Point to Point Routing on all
transmission lines
2000 Semtech Corp.
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Edge142
EDGE HIGH-PERFORMANCE PRODUCTS
Application Information (continued)
Temperature Coefficient
The propagation delay temperature coefficient is shown
in the above two charts. The same information is
displayed on two different scales to enhance readability.
The 142 functions over the entire VDELAY voltage range,
but the timing error due to changes in the ambient
temperature becomes large for VDELAY < -1.1V. If
extreme accuracy is required, the recommended voltage
range is: +0.1V >= VDELAY >= -1.1V. If greater range is
needed and thermal drift can be tolerated, or the ambient
temperature is very tightly controlled, the entire voltage
range may be used.
Temp Co [ps / °C]
Edge 142 Temperature Coefficient vs. VDELAY
vs. Ambient
60
Tpd+ 30-40°C
50
Tpd- 30-40°C
40
30
Tpd+ 40-50°C
20
Tpd- 40-50°C
10
0
-0.1
Tpd+ 50-60°C
-0.4
-0.8
-1.1
-1.3
Tpd- 50-60°C
VDELAY [V]
Temp Co [ps / °C]
Edge 142 Temperature Coefficient vs. VDELAY
vs. Ambient
6
Tpd+ 30-40°C
5
Tpd- 30-40°C
4
3
Tpd+ 40-50°C
2
Tpd- 40-50°C
1
0
-0.1
Tpd+ 50-60°C
-0.4
-0.8
-1.1
-1.3
Tpd- 50-60°C
VDELAY [V]
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Edge142
EDGE HIGH-PERFORMANCE PRODUCTS
Application Information (continued)
Prop Delay vs. Frequency
EL11 Clock Spreader Tpd vs. Frequency
30
[ps]
20
10
Tpd+ Error
Error
The 142 shows very little change in propagation delay
vs. frequency. The following three charts show the
variation in the prop delay of a rising edge and a falling
edge as the frequency is varied over a wide range.
0
Tpd- Error
The first chart shows the Motorola 10EL11 clock
spreader timing error for both the rising and falling edge
with the input frequency varied from .5 MHz to 300 MHz.
This information is used as a reference to compare the
142 against.
-20
0.5
10
20
50
75
100 125
150 200
250
300
Frequency [MHz]
Edge142 TPD+ Error vs. Frequency
VEE=-5.2V
VFALL & VMID=-0.6V
30
VD=+0.1V
VD=-0.1V
[ps]
20
10
Error
The second and third charts show the 142 under identical
conditions. The data is broken out into one chart for the
rising edge and a separate chart for the falling edge. In
addition, the timing error is listed over the entire delay
range of the 142.
-10
0
VD=-0.3V
VD=-0.5V
VD=-0.7V
VD=-0.9V
-10
VD=-1.1V
-20
0.5
10
20
50
75
100
125
150
200 250
300
VD=-1.3V
Frequency [MHz]
Edge142 TPD- Error vs. Frequency
VEE=-5.2V
VFALL & VMID=-0.6V
30
VD=+0.1V
VD=-0.1V
[ps]
10
Error
20
0
VD=-0.3V
VD=-0.5V
VD=-0.7V
VD=-0.9V
-10
VD=-1.1V
-20
0.5
10
20
50
75
100
125
150
200 250
300
VD=-1.3V
Frequency [MHz]
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Edge142
EDGE HIGH-PERFORMANCE PRODUCTS
Application Information (continued)
Prop Delay vs. Duty Cycle
EL11 Clock Spreader Tpd vs. 1%-99% Duty Cycle
100
80
60
40
[ps]
Error
The 142 shows very little change in propagation delay
vs. input duty cycle. The following three charts show
the variation in the prop delay of a rising edge and a
falling edge as the duty cycle is varied from 1% to 99%.
Since the input signal period is 100 ns, a 1% duty cycle
corresponds to a 1 ns positive input pulse. A 99% duty
cycle corresponds to a 1 ns negative input pulse.
20
Tpd+ Error
0
Tpd- Error
-20
-40
-60
-80
-100
The first chart shows the Motorola 10EL11 clock
spreader timing error for both the rising and falling edge.
This information is used as a reference to compare the
142 against.
0
10
20
30
40
50
60
70
80
90
100
Duty Cycle [%] (Period=100 ns)
Edge 142 Tpd+ vs. 1%-99% Duty Cycle
REXT2=2.94K
100
80
Tpd+ Error, +0.1V
[ps]
60
Error
The second and third charts show the 142 under identical
conditions. The data is broken out into one chart for the
rising edge and a separate chart for the falling edge. In
addition, the timing error is listed over the entire delay
range of the 142.
40
Tpd+ Error, -0.1V
20
Tpd+ Error, -0.3V
0
-20
Tpd+ Error, -0.7V
-40
Tpd+ Error, -0.9V
-60
Tpd+ Error, -1.1V
-80
-100
Tpd+ Error, -1.3V
0
10
20
30
40
50
60
70
80
9 0 100
Duty Cycle [%] (Period=100 ns)
Edge 142 Tpd- vs. 1%-99% Duty Cycle
REXT2=2.94K
100
80
Tpd- Error, +0.1V
Error
[ps]
60
40
Tpd- Error, -0.1V
20
Tpd- Error, -0.3V
0
-20
Tpd- Error, -0.7V
-40
Tpd- Error, -0.9V
-60
Tpd- Error, -1.1V
-80
-100
Tpd- Error, -1.3V
0
10
20
30
40
50
60
70
80
9 0 100
Duty Cycle [%] (Period=100 ns)
2000 Semtech Corp.
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Edge142
EDGE HIGH-PERFORMANCE PRODUCTS
Package Information
4
D
0.25
4X
C
A–B
D
D2
D
3
A
3
E
4
E2
B
3
e
SEE DETAIL "A"
TOP VIEW
7
5
D1
D
O
O
C
Z
E1
5
7
2
Z
4X
0.20
5
C
7
A–B
D
E
BOTTOM VIEW
2000 Semtech Corp.
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Edge142
EDGE HIGH-PERFORMANCE PRODUCTS
Package Information (continued)
0.40 MIN.
˚
0 MIN.
e
A2
–
0.10 S
0.13 / 0.30 R.
0.13
R. MIN.
–A, B, D–
C
GAGE PLANE
0.25
3
C
A1
L
˚
0–7
1.60 REF.
DETAIL "A"
DETAIL "B"
8
SEE DETAIL "B"
˚
12 – 16
b
1.41 REF.
ccc
M C A–B S D S
WITH LEAD FINISH
A
H
2
12 0.13 / 0.23
0.13 / 0.17
0.076
C
b
1
˚
12 – 16
BASE METAL
SECTION C-C
Notes:
1. All dimensions and tolerances conform to
ANSI Y14.5-1982.
2. Datum plane -H- located at mold parting line and
coincident with lead, where lead exits plastic body
at bottom of parting line.
3. Datums A-B and -D- to be determined where
centerline between leads exits plastic body at
datum plane -H-.
4. To be determined at seating plane -C-.
5. Dimensions D1 and E1 do not include mold
protrusion. Allowable mold protrusion is 0.254
mm per side. Dimensions D1 and E1 do include
mold mismatch and are determined at datum
plan -H-.
6. “N” is the total # of terminals.
7. Package top dimensions are smaller than bottom
dimensions by 0.20 mm, and top of package will
not overhang bottom of package.
8. Dimension b does not include dambar protrusion.
Allowable dambar protrusion shall be 0.08 mm
total in excess of the b dimension at maximum
material condition. Dambar cannot be located
on the lower radius or the foot.
9. All dimensions are in millimeters.
10. Maximum allowable die thickness to be assembled
in this package family is 0.635 millimeters.
11. This drawing conforms to JEDEC registered outline
MS-108.
12. These dimensions apply to the flat section of the
lead between 0.10 mm and 0.25 mm from the
lead tip.
2000 Semtech Corp.
JEDEC VARIATION
All Dimensions in Millimeters
AC
Min. Nom. Max. Note Comments
A
2.15 2.35
Soldered PkgHeight above PCB
A1 0.10 0.15 0.25
PCB Clearance
A2 1.95 2.00 2.10
Package Body Thickness
D
4
13.20 BSC.
D1
5 Package Body Length
10.00 BSC.
D2
7.80 REF.
ZD
1.10 REF.
E
4
13.20 BSC.
E1
5 Package Body Width
10.00 BSC.
E3
7.80 REF.
ZE
1.10 REF.
L
0.73 0.88 1.03
N
52
6 # Pins
e
0.65
Lead Pitch
b
0.22
0.38
b1 0.22 0.30 0.33
aaa
0.12
15
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Edge142
EDGE HIGH-PERFORMANCE PRODUCTS
Recommended Operating Conditions
Parameter
Symbol
Min
Typ
Max
Units
Device Ground
GND
0
0
0
V
Negative Power Supply
VEE
-4.2
-5.2
-5.5
V
TA
0
Symbol
Min
Ambient Operating Temperature
+70
o
C
Absolute Maximum Ratings
Parameter
Typ
Max
Units
VEE (relative to GND)
-7.0
0
V
Voltage on any Digital Pin
VEE
GND
V
Output Current
-50
mA
Ambient Operating Temperature
TA
-55
+70
o
C
Storage Temperature
TS
-65
+150
o
C
Junction Temperature
TJ
+150
o
C
TSOL
260
o
C
Soldering Temperature
(5 seconds, 1/4" from pin)
2000 Semtech Corp.
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Edge142
EDGE HIGH-PERFORMANCE PRODUCTS
DC Characteristics
Parameter
Symbol
Min
Typ
Max
Units
Differential Digital Input High Voltage
IN, IN*
IN - IN*
300
mV
Differential Digital Input Low Voltage
IN, IN*
IN* - IN
300
mV
Digital Input High Voltage
S00, S01, S10, S11, MODE,
EN*, MUX SEL, MUX EN
VIH
-1070
0
mV
Digital Input Low Voltage
S00, S01, S10, S11, MODE,
EN*, MUX SEL, MUX EN
VIL
VEE
-1450
mV
IN, IN*
-2.0
-0.5
V
Input High Current (Vin = VIHmax)
IIH
-100
120
250
µA
Input Low Current (Vin = VILmin)
IIL
-100
90
150
µA
VDELAY, VFALL, & VMID Input Currents
Iin
.84
.990
1.08
mA
Digital Output High Voltage
OUT - OUT*
700
800
mV
Digital Output Low Voltage
OUT* - OUT
700
800
mV
Output Common Mode Range
OUT + OUT*
2
-1.1
-1.35
-1.5
V
VEE = -4.5V
IEE
-255
-200
-155
mA
VEE = -5.0V
IEE
-260
-205
-160
mA
VEE = -5.5V
IEE
-265
-210
-165
mA
Inputs
Input Common Mode Range
Outputs
OUT0 / OUT0*, OUT1 / OUT1*
MUX OUT0 / MUX OUT0*,
MUX OUT1 / MUX OUT1*
VEE Supply Current
Test conditions (unless otherwise specified): “Recommended Operating Conditions” with REXT1 = 2.94 KΩ, and
REXT2 = 2.94 KΩ. All parameters specified at 0°C are guaranteed by characterization and are not production
tested. The specified limits shown can be met only after thermal equilibrium has been established. Thermal
equilibrium is established by applying power for at least 2 minutes while maintaining a transverse air flow of 400
linear feet per minute over the device mounted either in the test socket or on the printed circuit board.
2000 Semtech Corp.
17
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Edge142
EDGE HIGH-PERFORMANCE PRODUCTS
AC Characteristics
Parameter
Propagation Delays
Minimum Delay (Pulse Width >= 1.0 ns)
VDELAY = +0.1V, VFALL = +0.1V
Delay Range vs. Pulse Width
Input Pulse Width >= 1.0 ns
(+0.1V < VDELAY < -1.2V)
VFALL Range of Adjustment
Input Pulse Width >= 1.0 ns
(+0.1V < VFALL < -1.2V)
Symbol
Min
Typ
Max
Units
TPDmin
1.75
2.05
2.45
ns
Tspan
1.1
1.4
ns
Tfall
170
300
ps
<2
ps / oC
Propagation Delay Tempco (Note 1)
-1.1V <= VDELAY, VFALL <= +0.1V
Output Rise/Fall Times (20% to 80%) (Note 1)
Tr, Tf
300
420
500
ps
Test conditions (unless otherwise specified): “Recommended Operating Conditions” with TA = 25 °C with 400
LFPM of airflow, and all outputs terminated with 50 Ω to –2.0 V. Timing reference points at the differential
crossing points for input and output signals, REXT1 = 2.94 KΩ, and REXT2 = 2.94 KΩ. All input signals are
fully differential. Values are based on nominal temperature and a supply voltage of –5.2 V.
Note 1: Based upon characterization data. Not production tested. For more complete data, refer to the
application information section of the data sheet.
The specified limits shown can be met only after thermal equilibrium has been established. Thermal equilibrium
is established by applying power for at least 2 minutes while maintaining a transverse air flow of 400 linear
feet per minute over the device mounted either in the test socket or on the printed circuit board.
2000 Semtech Corp.
18
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Edge142
EDGE HIGH-PERFORMANCE PRODUCTS
Ordering Information
Model Number
Package
E142AHF
52 Pin 10mm x 10mm MQFP with
Internal Heat Spreader
D142
Die Form
EVM142AHF
Edge142 Evaluation Module
Contact Information
Semtech Corporation
Edge High-Performance Division
10021 Willow Creek Rd., San Diego, CA 92131
Phone: (858)695-1801 FAX (858)695-2633
2000 Semtech Corp.
19
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