Micrel, Inc.
2.5V/3.3V 1:10 DIFFERENTIAL
LVPECL/LVECL/HSTL CLOCK DRIVER
Precision Edge
®
SY100EP111U
Precision Edge
®
SY100EP111U
FEATURES
■
2.5V and 3.3V power supply options
■
Guaranteed AC parameters over temperature:
• f
MAX
= 3GHz
• < 25ps output-to-output skew
• < 250ps t
r
/ t
f
• < 400ps propagation delay
■
Wide temperature range: –40
°
C to +85
°
C
■
Differential design
■
V
BB
output for single-ended input applications
■
Fully compatible with industry standard 100K I/O
levels
■
Available in 32-pin TQFP package
Precision Edge
®
DESCRIPTION
The SY100EP111U is a high-speed, low skew 1-to-10
differential fanout buffer designed for clock distribution in
new, high-performance systems. The internal 2:1 mux
allows the input to select between two differential clock
sources.
The device is specifically designed for low skew. The
interconnect scheme and metal layout are carefully
optimized for minimal gate-to-gate skew within the device.
Wafer characterization and process control ensure
consistent distribution of propagation delay from lot to lot.
The V
BB
output is intended for use as a reference
voltage for single-ended reception of ECL signals to that
device only. When using V
BB
for this purpose, it is
recommended that V
BB
is decoupled to V
CC
via a 0.01µF
capacitor.
BLOCK DIAGRAM
Q
0
/Q
0
Q
1
/Q
1
Q
2
/Q
2
Q
3
CLK0
V
EE
/CLK0
75kΩ
75kΩ
75kΩ
/Q
3
0
Q
4
/Q
4
Q
5
/Q
5
V
EE
75kΩ
V
EE
CLK1
V
CC
1
Q
6
/Q
6
Q
7
/Q
7
/CLK1
75kΩ
75kΩ
V
EE
CLK_SEL
V
CC
75kΩ
Q
8
/Q
8
V
BB
Q
9
/Q
9
V
EE
Precision Edge is a registered trademark of Micrel, Inc.
M9999-021511
hbwhelp@micrel.com or (408) 955-1690
Rev.: F
Amendment: /0
1
Issue Date: December 2005
Micrel, Inc.
Precision Edge
®
SY100EP111U
PACKAGE/ORDERING INFORMATION
VCC
/Q0
/Q1
Q2
/Q2
Q0
Q1
VCC
Ordering Information
(1)
Q3
/Q3
Q4
/Q4
Q5
/Q5
Q6
/Q6
VCC
CLK_SEL
CLK0
/CLK0
VBB
CLK1
/CLK1
VEE
32 31 30 29 28 27 26 25
24
1
2
3
4
5
6
7
8
23
22
Part Number
SY100EP111UTI
SY100EP111UTITR
(2)
SY100EP111UTG
(3)
SY100EP111UTGTR
(2, 3)
SY100EP111UTGTX
(2, 4)
Package
Type
T32-1
T32-1
T32-1
T32-1
T32-1
Operating
Range
Industrial
Industrial
Industrial
Industrial
Industrial
Package
Marking
100EP111UTI
100EP111UTI
Lead
Finish
Sn-Pb
Sn-Pb
Top View
TQFP
T32-1
21
20
19
18
100EP111UTG with
Pb-Free
Pb-Free bar-line indicator NiPdAu
100EP111UTG with
Pb-Free
Pb-Free bar-line indicator NiPdAu
100EP111UTG with
Pb-Free
Pb-Free bar-line indicator NiPdAu
17
9 10 11 12 13 14 15 16
/Q9
Q9
/Q8
Q8
Q7
VCC
VCC
/Q7
32-Pin TQFP (T32-1)
Notes:
1. Contact factory for die availability. Dice are guaranteed at T
A
= 25°C, DC Electricals only.
2. Tape and Reel.
3. Pb-Free package is recommended for new designs.
4. EIA specification orientation.
PIN NAMES
Pin
CLK0, /CLK0
Function
LVPECL, LVECL, HSTL Clock Inputs:
CLK0 input includes a 75kΩ pull-down. Default
is low if left floating. /CLK0 includes an internal
75kΩ pull-up and pull-down. Default state is
V
CC
/2.
LVPECL, LVECL, HSTL Clock Inputs:
CLK input includes a 75kΩ pull-down. Default
is low if left floating. /CLK includes an internal
75kΩ pull-up and pull-down. Default state is
V
CC
/2.
LVPECL/LVECL Outputs.
Complementary LVPECL/LVECL Outputs.
LVPECL/LVECL Clock Select Input: Internal
75kΩ resistor connected to V
EE
. When left
floating, the default condition is LOW.
Reference Voltage: AC coupled or single-
ended input applications.
Positive Power Supply: Bypass with 0.1µF//
0.01µF low ESR capacitors.
Negative Power Supply: LVPECL operation,
connect to GND.
FUNCTION TABLE
CLK_SEL
0
1
Active Input
CLK0, /CLK0
CLK1, /CLK1
CLK1, /CLK1
Q0 to Q9
/Q0 to /Q9
CLK_SEL
V
BB
V
CC
V
EE
M9999-021511
hbwhelp@micrel.com or (408) 955-1690
2
Micrel, Inc.
Precision Edge
®
SY100EP111U
ABSOLUTE MAXIMUM RATINGS
(1)
Symbol
V
CC
– V
EE
V
IN
I
OUT
I
BB
T
LEAD
T
A
T
store
θ
JA
θ
JC
Note 1.
Rating
Power Supply Voltage
Input Voltage (V
CC
= 0V, V
IN
not more negative than V
EE
)
Input Voltage (V
EE
= 0V, V
IN
not more positive than V
CC
)
Output Current
V
BB
Sink/Source Current
(2)
Lead Temperature (soldering, 20sec.)
Operating Temperature Range
Storage Temperature Range
Package Thermal Resistance
(Junction-to-Ambient)
Package Thermal Resistance
(Junction-to-Case)
–Still-Air
–500lfpm
–Continuous
–Surge
Value
6.0
–6.0 to 0
+6.0 to 0
50
100
±0.5
+260
–40 to +85
–65 to +150
50
42
20
Unit
V
V
mA
mA
°C
°C
°C
°C/W
°C/W
Permanent device damage may occur if absolute maximum ratings are exceeded. This is a stress rating only and functional operation is not
implied at conditions other than those detailed in the operational sections of this data sheet. Exposure to absolute maximum ratlng conditions
for extended periods may affect device reliability.
Due to the limited drive capability, use for inputs of same package only.
Note 2.
DC ELECTRICAL CHARACTERISTICS
(1)
T
A
= –40
°
C
Symbol
V
CC
Parameter
Power Supply Voltage
(LVPECL)
(LVECL)
Power Supply Current
Input HIGH Current
Input LOW Current
CLK0, CLK1
/CLK0, /CLK1
Input Capacitance
Min.
2.375
–3.8
—
—
0.5
–150
—
Typ.
—
—
55
—
—
—
—
Max.
Min.
T
A
= +25
°
C
Typ.
—
—
70
—
—
—
2
Max.
Min.
T
A
= +85
°
C
Typ.
—
—
85
—
—
—
—
Max.
3.8
–2.375
120
150
—
—
—
Unit
V
V
mA
µA
µA
µA
pF
V
IN
= V
IH
V
IN
= V
IL
V
IN
= V
IL
Condition
3.8
2.375
–2.375 –3.8
120
150
—
—
—
—
—
0.5
–150
—
3.8
2.375
–2.375 –3.8
120
150
—
—
—
—
—
0.5
–150
—
I
EE
I
IH
I
IL
C
IN
Note 1.
100KEP circuits are designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. The
circuit is in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained.
M9999-021511
hbwhelp@micrel.com or (408) 955-1690
3
Micrel, Inc.
Precision Edge
®
SY100EP111U
LVPECL DC ELECTRICAL CHARACTERISTICS
(1)
V
CC
= 3.3V
±10%;
V
EE
= 0V
T
A
= –40
°
C
Symbol
V
IH
V
IL
V
OL
V
OH
V
BB
V
IHCMR
Note 1.
T
A
= +25
°
C
Max.
2420
1675
1605
2405
1975
V
CC
Min.
2135
1355
1355
2155
1775
1.2
Typ.
—
—
1480
2280
1875
—
Max.
2420
1675
1605
2405
1975
V
CC
Min.
2135
1355
1355
2155
1775
1.2
T
A
= +85
°
C
Typ.
—
—
1480
2280
1875
—
Max.
2420
1675
1605
2405
1975
V
CC
Unit
mV
mV
mV
50Ω to V
CC
–2V
mV
50Ω to V
CC
–2V
mV
V
Condition
Parameter
Input HIGH Voltage
(Single-Ended)
Input LOW Voltage
(Single-Ended)
Output LOW Voltage
Output HIGH Voltage
Reference Voltage
(2)
Input HIGH Voltage
Common Mode Range
(3)
Min.
2135
1355
1355
2155
1775
1.2
Typ.
—
—
1480
2280
1875
—
100KEP circuits are designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. The
circuit is in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained. Input and output varies
1:1 with V
CC
.
Single-ended input operation is limited V
CC
≥
3.0V in LVPECL mode. V
BB
reference varies 1:1 with V
CC
.
V
IHCMR
(Min) varies 1:1 with V
EE
, V
IHCMR
(Max) varies 1:1 with V
CC
. The V
IHCMR
range is referenced to the most positive side of the
differential input signal.
Note 2.
Note 3.
LVPECL DC ELECTRICAL CHARACTERISTICS
(1)
V
CC
= 2.5V
±5%,
V
EE
= 0V
T
A
= –40
°
C
Symbol
V
IH
V
IL
V
OL
V
OH
V
IHCMR
Note 1.
T
A
= +25
°
C
Max.
1620
875
805
1605
V
CC
Min.
1335
555
555
1355
1.2
Typ.
—
—
680
1480
—
Max.
1620
875
805
1605
V
CC
Min.
1335
555
555
1355
1.2
T
A
= +85
°
C
Typ.
—
—
680
1480
—
Max.
1620
875
805
1605
V
CC
Unit
mV
mV
mV
50Ω to V
CC
–2V
mV
50Ω to V
CC
–2V
V
Condition
Parameter
Input HIGH Voltage
(Single-ended)
Input LOW Voltage
(Single-ended)
Output LOW Voltage
Output HIGH Voltage
Input HIGH Voltage
Common Mode Range
(2)
Min.
1335
555
555
1355
1.2
Typ.
—
—
680
1480
—
100KEP circuits are designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. The
circuit is in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained. Input and output varies
1:1 with V
CC
.
V
IHCMR
(Min) varies 1:1 with V
EE
, V
IHCMR
(Max) varies 1:1 with V
CC
. The V
IHCMR
range is referenced to the most positive side of the
differential input signal.
Note 2.
M9999-021511
hbwhelp@micrel.com or (408) 955-1690
4
Micrel, Inc.
Precision Edge
®
SY100EP111U
LVECL DC ELECTRICAL CHARACTERISTICS
(1)
V
EE
= –2.375V to –3.8V; V
CC
= 0V
T
A
= –40
°
C
Symbol
V
IL
V
IH
V
OL
V
OH
V
BB
V
IHCMR
Note 1.
Note 2.
Note 3.
T
A
= +25
°
C
Max.
Min.
Typ.
—
—
Max.
Min.
T
A
= +85
°
C
Typ.
—
—
Max.
–1625
–0880
Unit
mV
mV
mV
50Ω to V
CC
–2V
mV
50Ω to V
CC
–2V
mV
V
Condition
Parameter
Input LOW Voltage
(Single-ended)
Input HIGH Voltage
(Single-ended)
Output LOW Voltage
Output HIGH Voltage
Min.
–1945
–1165
Typ.
—
—
–1625 –1945
–0880 –1165
–1625 –1945
–0880 –1165
–1945 –1820 –1695 –1945 –1820 –1695 –1945 –1820 –1695
–1145 –1020 –0895 –1145 –1020 –0895 –1145 –1020 –0895
Output Reference Voltage
(2)
–1525 –1425 –1325 –1525 –1425 –1325 –1525 –1425 –1325
Input HIGH Voltage
Common Mode Range
(3)
V
EE
+1.2
0.0
V
EE
+1.2
0.0
V
EE
+1.2
0.0
100KEP circuits are designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. The
circuit is in a test socket or mounted on a printed circuit board and traverse airflow greater than 500lfpm is maintained.
Single-ended input operation is limited V
EE
≤
–3.0V in LVECL mode.
V
IHCMR
(min) varies 1:1 with V
EE
. The V
IHCMR
range is referenced to the most positive side of the differential input signal.
HSTL DC ELECTRICAL CHARACTERISTICS
V
CC
= 2.375V to 3.8V; V
EE
= 0V
T
A
= –40
°
C
Symbol
V
IH
V
IL
V
X
Parameter
Input HIGH Voltage
Input LOW Voltage
Input Crossover Voltage
Min.
1200
—
680
Typ.
—
—
—
Max.
—
400
900
Min.
1200
—
680
T
A
= +25
°
C
Typ.
—
—
—
Max.
—
400
900
Min.
1200
—
680
T
A
= +85
°
C
Typ.
—
—
—
Max.
—
400
900
Unit
mV
mV
mV
M9999-021511
hbwhelp@micrel.com or (408) 955-1690
5
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