The SY100EP15V is a high-speed, low-skew, PECL/ECL
1:4 precision fanout buffer with a 2:1 mux front end in a
small 16-pin TSSOP package. The 2:1 mux input accepts a
single-ended PECL/ECL source (CLK1) and a differential
PECL/ECL/HSTL source (CLK0). All I/O pins are 100K EP
PECL/ECL logic compatible.
AC performance is guaranteed over the industrial –40°C
to +85°C temperature range and 3.3V to 5V supply voltage.
This device will operate in PECL/LVPECL or ECL/LVECL
mode. For clock applications, the high-speed design
combined with an extremely fast rise/fall time of less than
225ps produces a toggle frequency as high as 2.5GHz
(~400mV
PP
swing).
A V
BB
output reference pin is available for AC–coupled
and single-ended input applications. In addition, a
synchronous output enable function is provided.
The SY100EP15V is part of Micrel’s high-speed, precision
edge timing and distribution family. For applications that
require a different I/O combination, consult Micrel's website
at www.micrel.com, and choose from a comprehensive
product line of high-speed, low-skew fanout buffers,
translators, and clock dividers.
All support documentation can be found on Micrel’s web
site at: www.micrel.com.
ECL Pro is a trademark of Micrel, Inc.
M9999-120505
hbwhelp@micrel.com or (408) 955-1690
Rev.: E
Amendment: /0
1
Issue Date: December 2005
Micrel, Inc.
ECL Pro™
SY100EP15V
PACKAGE/ORDERING INFORMATION
Ordering Information
(1)
Q0 1
/Q0 2
Q1 3
/Q1 4
Q2 5
/Q2 6
Q3 7
/Q3 8
1
0
Q D
16 VCC
15 /EN
14 CLK1
13 VBB
12 /CLK0
11 CLK0
10 SEL
9 VEE
Part Number
SY100EP15VK4C
SY100EP15VK4CTR
(2)
SY100EP15VK4I
SY100EP15VK4ITR
(2)
SY100EP15VK4G
(3)
SY100EP15VK4GTR
(2, 3)
Package
Type
K4-16-1
K4-16-1
K4-16-1
K4-16-1
K4-16-1
K4-16-1
Operating
Range
Commercial
Commercial
Industrial
Industrial
Industrial
Industrial
Package
Marking
XEP15V
XEP15V
XEP15V
XEP15V
XEP15V with
Pb-Free bar-line Indicator
XEP15V with
Pb-Free bar-line Indicator
Lead
Finish
Sn-Pb
Sn-Pb
Sn-Pb
Sn-Pb
NiPdAu
Pb-Free
NiPdAu
Pb-Free
Available in 16-Pin TSSOP
(K4-16-1)
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.
M9999-120505
hbwhelp@micrel.com or (408) 955-1690
2
Micrel, Inc.
ECL Pro™
SY100EP15V
PIN DESCRIPTION
Pin
1, 2, 3, 4
5, 6, 7, 8
Pin Number
Q0 – Q3
/Q0 – /Q3
Function
Outputs 0 through 3: 100KEP (LV)PECL/(LV)ECL compatible differential outputs. Terminate
with 50Ω to V
CC
–2V. Unused output pairs may be left floating, or pulled-down with a 2kΩ
resistor to the most negative supply. Unused single-ended outputs must have a balanced load.
For AC-coupled applications, the output stage emitter follower must have a DC current path to
ground. See “Termination” section.
Negative Power Supply: For PECL/LVPECL applications, connect to GND.
100KEP (LV)PECL/(LV)ECL Compatible 2:1 Mux Input Select Control. See “Truth Table.” The
select (SEL) pin includes an internal 75kΩ pull-down resistor. Default condition when left floating
is LOW, and CLK0 input is selected.
Differential (LV)PECL/(LV)ECL/HSTL Compatible Input: The inputs include an internal 75kΩ
pull-down resistor on CLK0 and internal 75kΩ pull-up and pull-down on /CLK0. Default condition
for CLK0 is LOW when left floating and V
CC
/2 for /CLK0 when left floating.
Reference Output Voltage: This reference is typically used to bias the unused inverting input for
single-ended input applications, or as the termination point for AC-coupled differential input
applications. V
BB
reference value is approximately V
CC
–1.3V, and tracks Vcc 1:1. Maximum
sink/source capability for V
BB
is 0.50mA. For single ended inputs, connect to the unused input
through a 50Ω resistor. Decouple the V
BB
pin with a 0.01µF capacitor to V
CC
.
Single-Ended (LV)PECL/(LV)ECL Compatible Input: This pin includes an internal 75kΩ
pull-down resistor. Default condition is LOW when left floating.
100KEP (LV)PECL/(LV)ECL Compatible Input: This synchronous pin controls the output state.
See “Truth Table.” To ensure proper synchronous operation, adhere to the Set-up and Hold
times, as described in the AC electrical table. When /EN pin goes HIGH, Q outputs go LOW, and
/Q outputs go HIGH on the next falling clock transition. This synchronous operation avoids any
chance of generating a runt pulse.
Positive Power Supply: Bypass with 0.1µF//0.01µF low ESR capacitors.
9
10
VEE
SEL
11, 12
CLK0, /CLK0
13
VBB
14
15
CLK1
/EN
16
VCC
TRUTH TABLE
(1)
CLK0
L
H
X
X
CLK1
X
X
L
H
X
X
Note:
1.
= Negative edge.
SEL
L
L
H
H
L
H
/EN
L
L
L
L
H
H
Q
L
H
L
H
L
L
M9999-120505
hbwhelp@micrel.com or (408) 955-1690
3
Micrel, Inc.
ECL Pro™
SY100EP15V
ABSOLUTE MAXIMUM RATINGS
(1)
Symbol
V
CC
– V
EE
V
IN
I
OUT
I
BB
T
LEAD
T
A
T
STORE
θ
JA
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 (single-layer PCB)
–Still-Air (multi-layer PCB)
–500lfpm (multi-layer PCB)
–Continuous
–Surge
Value
6.0
–6.0 to 0
+6.0 to 0
50
100
±0.5
+260
–40 to +85
–65 to +150
115
75
65
21
Unit
V
V
mA
mA
°C
°C
°C
°C/W
°C/W
θ
JC
Notes:
1. 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.
2. Due to the limited drive capability, use for inputs of same package only.
DC ELECTRICAL CHARACTERISTICS
(1)
T
A
= –40
°
C
Symbol
V
CC
Parameter
Power Supply Voltage
(PECL)
(LVPECL)
(ECL)
(LVECL)
Power Supply Current
Input HIGH Current
Input LOW Current
CLK0, CLK1
/CLK0
Input Capacitance (TSSOP)
Min.
4.5
2.97
–5.5
–3.63
—
—
0.5
–150
—
Typ.
5.0
3.3
–5.0
–3.3
—
—
—
—
—
Max.
5.5
3.63
–4.5
–2.97
70
150
—
—
—
Min.
4.5
2.97
–5.5
–3.63
—
—
0.5
–150
—
T
A
= +25
°
C
Typ.
5.0
3.3
–5.0
–3.3
52
—
—
—
1.0
Max.
5.5
3.63
–4.5
–2.97
72
150
—
—
—
Min.
4.5
2.97
–5.5
–3.63
—
—
0.5
–150
—
T
A
= +85
°
C
Typ.
5.0
3.3
–5.0
–3.3
—
—
—
—
—
Max.
5.5
3.63
–4.5
–2.97
75
150
—
—
—
mA
µA
µA
µA
pF
V
IN
= V
IH
V
IN
= V
IL
V
IN
= V
IL
Unit
V
Condition
I
CC
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.
M9999-120505
hbwhelp@micrel.com or (408) 955-1690
4
Micrel, Inc.
ECL Pro™
SY100EP15V
(100KEP) LVPECL DC ELECTRICAL CHARACTERISTICS
(1)
V
CC
= 3.0V
±10%,
V
EE
= 0V
T
A
= –40
°
C
Symbol
V
IL
V
IH
V
OL
V
OH
V
BB
V
IHCMR
Notes:
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. Input and output parameters varies 1:1
with V
CC
. Output load is 50Ω to V
CC
–2V.
2. V
BB
varies 1:1 with V
CC
.
3. The V
IHCMR
range is referenced to the most positive side of the differential input signal.
T
A
= +25
°
C
Max.
1675
2420
1605
2405
1975
V
CC
Min.
1355
2075
1355
2155
1775
1.2
Typ.
—
—
1480
2280
1875
—
Max.
1675
2420
1605
2405
1975
V
CC
Min.
1355
2075
1355
2155
1775
1.2
T
A
= +85
°
C
Typ.
—
—
1480
2280
1875
—
Max.
1675
2420
1605
2405
1975
V
CC
Unit
mV
mV
mV
mV
mV
V
Condition
V
CC
= 3.3V
V
CC
= 3.3V
V
CC
= 3.3V
V
CC
= 3.3V
V
CC
= 3.3V
Parameter
Input LOW Voltage
(Single-Ended)
Input HIGH Voltage
(Single-Ended)
Output LOW Voltage
Output HIGH Voltage
Reference Voltage
(2)
Input HIGH Voltage
Common Mode Range
(3)
Min.
1355
2075
1355
2155
1775
1.2
Typ.
—
—
1480
2280
1875
—
(100KEP) PECL DC ELECTRICAL CHARACTERISTICS
(1)
V
CC
= 5.0V
±10%,
V
EE
= 0V
T
A
= –40
°
C
Symbol
V
IL
V
IH
V
OL
V
OH
V
BB
V
IHCMR
Notes:
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. Input and output parameters varies 1:1
with V
CC
. Output load is 50Ω to V
CC
–2V.
2. V
BB
varies 1:1 with V
CC
.
3. The V
IHCMR
range is referenced to the most positive side of the differential input signal.
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