1
ECL Pro™
SY10EP11U
SY100EP11U
Micrel, Inc.
M9999-111606
hbwhelp@micrel.com or (408) 955-1690
DESCRIPTION
FEATURES
2.5V/3.3V/5V 1:2 DIFFERENTIAL
PECL/LVPECL/ECL
FANOUT BUFFER
ECL Pro™
SY10EP11U
SY100EP11U
■2.5V, 3.3V and 5V power supply options
■Guaranteed AC parameters over temperature:
•f
MAX > 3.0GHz
•<20ps output-to-output skew
•<200ps tr/t
f
•<300ps propagation delay
■Wide temperature range: –40°C to +85°C
■Available in 8-pin (3mm) MSOP and SOIC packages
The SY10/100EP11U is a precision, high-speed 1:2
differential fanout buffer. Having within-device skews and
output transition times significantly improved over the
EL11V, the EP11U is ideally suited for those applications
which require the ultimate in AC performance.
The differential inputs of the EP11U employ clamping
circuitry to maintain stability under open input conditions.
If the inputs are left open, the Q outputs will go LOW.
Rev.: D Amendment: /0
Issue Date: November 2005
Pin Function
DPECL, LVPECL, ECL, LVECL Clock or Data Input:
Internal 75kΩ pulldown resistor. If left floating,
pin defaults LOW, QOUT goes LOW.
/D PECL, LVPECL, ECL, LVECL complementary
Clock or Data Input: Internal 75kΩ pull-up and
down resistors. If left open, default is VCC/2. When
the input is not used, it can be left open.
Q0, /Q0 PECL, LVPECL, ECL, LVECL Outputs:
Q1, /Q1 Terminates to VCC –2V.
VCC Positive Power Supply: Bypass with 0.1µF//0.01µF
low ESR capacitors.
VEE Negative Power Supply: For PECL operation,
connect to GND.
PIN NAMES
Micrel Semiconductor ON Semiconductor
SY10EP11UZI/KI MC10EP11D/DT
SY10EP11UZI/KI MC10LVEP11D/DT
SY100EP11UZI/KI MC100EP11D/DT
SY100EP11UZI/KI MC100LVEP11D/DT
CROSS REFERENCE TABLE
ECL Pro™
ECL Pro is a trademark of Micrel, Inc.
2
ECL Pro™
SY10EP11U
SY100EP11U
Micrel, Inc.
M9999-111605
hbwhelp@micrel.com or (408) 955-1690
PACKAGE/ORDERING INFORMATION
8-pin MSOP and SOIC Packages
Ordering Information(1)
Package Operating Package Lead
Part Number Type Range Marking Finish
SY10EP11UKC K8-1 Commercial HP11 Sn-Pb
SY10EP11UKCTR(2) K8-1 Commercial HP11 Sn-Pb
SY100EP11UKC K8-1 Commercial XP11 Sn-Pb
SY100EP11UKCTR(2) K8-1 Commercial XP11 Sn-Pb
SY10EP11UZC Z8-1 Commercial HEP11U Sn-Pb
SY10EP11UZCTR(2) Z8-1 Commercial HEP11U Sn-Pb
SY100EP11UZC Z8-1 Commercial XEP11U Sn-Pb
SY100EP11UZCTR(2) Z8-1 Commercial XEP11U Sn-Pb
SY10EP11UKI K8-1 Industrial HP11 Sn-Pb
SY10EP11UKITR(2) K8-1 Industrial HP11 Sn-Pb
SY100EP11UKI K8-1 Industrial XP11 Sn-Pb
SY100EP11UKITR(2) K8-1 Industrial XP11 Sn-Pb
SY10EP11UZI Z8-1 Industrial HEP11U Sn-Pb
SY10EP11UZITR(2) Z8-1 Industrial HEP11U Sn-Pb
SY100EP11UZI Z8-1 Industrial XEP11U Sn-Pb
SY100EP11UZITR(2) Z8-1 Industrial XEP11U Sn-Pb
SY10EP11UKG(3) K8-1 Industrial HP11 with Pb-Free
Pb-Free bar-line indicator NiPdAu
SY10EP11UKGTR(2, 3) K8-1 Industrial HP11 with Pb-Free
Pb-Free bar-line indicator NiPdAu
SY100EP11UKG(3) K8-1 Industrial XP11 with Pb-Free
Pb-Free bar-line indicator NiPdAu
SY100EP11UKGTR(2, 3) K8-1 Industrial XP11 with Pb-Free
Pb-Free bar-line indicator NiPdAu
SY10EP11UZG(3) Z8-1 Industrial HEP11U with Pb-Free
Pb-Free bar-line indicator NiPdAu
SY10EP11UZGTR(2, 3) Z8-1 Industrial HEP11U with Pb-Free
Pb-Free bar-line indicator NiPdAu
SY100EP11UZG(3) Z8-1 Industrial XEP11U with Pb-Free
Pb-Free bar-line indicator NiPdAu
SY100EP11UZGTR(2, 3) Z8-1 Industrial XEP11U with Pb-Free
Pb-Free bar-line indicator NiPdAu
Notes:
1. Contact factory for die availability. Dice are guaranteed at TA = 25°C, DC Electricals only.
2. Tape and Reel.
3. Pb-Free package is recommended for new designs.
1
2
3
45
6
7
8
Q0
Q1
VCC
D
VEE
/D
/Q0
/Q1 V
EE
V
CC
V
EE
V
CC
75kΩ
75kΩ
75kΩ
V
EE
3
ECL Pro™
SY10EP11U
SY100EP11U
Micrel, Inc.
M9999-111606
hbwhelp@micrel.com or (408) 955-1690
Symbol Rating Value Unit
VCC —V
EE Power Supply Voltage 6V V
VIN Input Voltage (VCC = 0V, VIN not more negative than VEE)–6.0 to 0 V
Input Voltage (VEE = 0V, VIN not more positive than VCC)+6.0 to 0 V
IOUT Output Current –Continuous 50 mA
–Surge 100
TAOperating Temperature Range –40 to +85 °C
TLEAD Lead Temperature (soldering, 20sec.) 260 °C
Tstore Storage Temperature Range –65 to +150 °C
θJA Package Thermal Resistance –Still-Air (SOIC) 160 °C/W
(Junction-to-Ambient) –500lfpm (SOIC) 109
–Still-Air (MSOP) 206 °C/W
–500lfpm (MSOP) 155
θJC Package Thermal Resistance (SOIC) 39 °C/W
(Junction-to-Case) (MSOP) 39
Note:
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.
ABSOLUTE MAXIMUM RATINGS(1)
TA = –40°CT
A = +25°CT
A = +85°C
Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition
VCC Power Supply Voltage V
(PECL) 4.5 5.0 5.5 4.5 5.0 5.5 4.5 5.0 5.5
(LVPECL) 2.37 — 3.8 2.37 — 3.8 2.37 — 3.8
(ECL) –5.5 –5.0 –4.5 –5.5 –5.0 –4.5 –5.5 –5.0 –4.5
(LVECL) –3.8 –3.3 –2.37 –3.8 –3.3 –2.37 –3.8 –3.3 –2.37
IEE Power Supply Current
SY10EP11U — — 37 — 25 39 — — 40 mA
SY100EP11U — — 44 — 30 44 — — 44 mA
IIH Input HIGH Current — — 150 — — 150 — — 150 µAV
IN = VIH
IIL Input LOW Current D 0.5 — — 0.5 — — 0.5 — — µAV
IN = VIL
/D –150 — — –150 — — –150 — — µAV
IN = VIL
CIN Input Capacitance (MSOP) ————1.0————pF
(SOIC) ————1.35 ————pF
Note:
1. 10/100KEP 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.
DC ELECTRICAL CHARACTERISTICS(1)
4
ECL Pro™
SY10EP11U
SY100EP11U
Micrel, Inc.
M9999-111605
hbwhelp@micrel.com or (408) 955-1690
TA = –40°CT
A = +25°CT
A = +85°C
Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition
VOL Output LOW Voltage 565 690 815 630 755 880 690 815 940 mV
50Ω to VCC–2V
VOH Output HIGH Voltage 1365 1490 1615 1430 1555 1680 1490 1615 1740 mV
50Ω to VCC–2V
VIHCMR Input HIGH Voltage(2) 1.2 — VCC 1.2 — VCC 1.2 — VCC V
Common Mode Range
(10KEP) LVPECL DC ELECTRICAL CHARACTERISTICS(1)
VCC = 2.5V ±5%, VEE = 0V.
TA = –40°CT
A = +25°CT
A = +85°C
Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition
VIL Input LOW Voltage 1365 — 1690 1430 — 1755 1490 — 1815 mV
(Single-Ended)
VIH Input HIGH Voltage 2090 — 2415 2155 — 2480 2215 — 2540 mV
(Single-Ended)
VOL Output LOW Voltage 1365 1490 1615 1430 1555 1680 1490 1615 1740 mV
50Ω to VCC–2V
VOH Output HIGH Voltage 2165 2290 2415 2230 2355 2480 2290 2415 2540 mV
50Ω to VCC–2V
VIHCMR Input HIGH Voltage(2) 1.2 — VCC 1.2 — VCC 1.2 — VCC V
Common Mode Range
(10KEP) LVPECL DC ELECTRICAL CHARACTERISTICS(1)
VCC = 3.3V ±10%, VEE = 0V.
TA = –40°CT
A = +25°CT
A = +85°C
Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition
VIL Input LOW Voltage 3065 — 3390 3130 — 3455 3190 — 3515 mV
(Single-Ended)
VIH Input HIGH Voltage 3790 — 4115 3855 — 4180 3915 — 4240 mV
(Single-Ended)
VOL Outuput LOW Voltage 3065 3190 3315 3130 3255 3380 3190 3315 3440 mV
50Ω to VCC–2V
VOH Output HIGH Voltage 3865 3990 4115 3930 4055 4180 3990 4115 4240 mV
50Ω to VCC–2V
VIHCMR Input HIGH Voltage(2) 1.2 — VCC 1.2 — VCC 1.2 — VCC V
Common Mode Range
(10KEP) PECL DC ELECTRICAL CHARACTERISTICS(1)
VCC = 5.0V ±10%, VEE = 0V.
No tes:
1. 10KEP 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 are at VCC =
2.5V. They vary 1:1 with VCC.
2. The VIHCMR range is referenced to the most positive side of the differential input signal. See “Input Waveform” section. Single-ended input CLK pin
operation is limited to VCC ≥3.0V in PECL mode.
5
ECL Pro™
SY10EP11U
SY100EP11U
Micrel, Inc.
M9999-111606
hbwhelp@micrel.com or (408) 955-1690
TA = –40°CT
A = +25°CT
A = +85°C
Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition
VIL Input LOW Voltage –1935 — –1610 –1870 — –1545 –1810 — –1485 mV
(Single-Ended)
VIH Input HIGH Voltage –1210 — –885 –1145 — –820 –1085 — –760 mV
(Single-Ended)
VOL Outuput LOW Voltage –1935 –1810 –1685 –1870 –1745 –1620 –1810 –1685 –1560 mV
50Ω to VCC–2V
VOH Output HIGH Voltage –1135 –1010 –885 –1070 –945 –820 –1010 –885 –760 mV
50Ω to VCC–2V
VIHCMR Input HIGH Voltage(4) VEE +1.2 0.0 VEE +1.2 0.0 VEE +1.2 0.0 V
Common Mode Range
(10KEP) ECL/LVECL DC ELECTRICAL CHARACTERISTICS(3)
VCC = 0V, VEE = –5.5V to –2.375V.
TA = –40°CT
A = +25°CT
A = +85°C
Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition
VOL Outuput LOW Voltage 555 680 805 555 680 805 555 680 805 mV
50Ω to VCC–2V
VOH Output HIGH Voltage 1355 1480 1605 1355 1480 1605 1355 1480 1605 mV
50Ω to VCC–2V
VIHCMR Input HIGH Voltage(4) 1.2 — VCC 1.2 — VCC 1.2 — VCC V
Common Mode Range
(100KEP) LVPECL DC ELECTRICAL CHARACTERISTICS(3)
VCC = 2.5V ±5%.
TA = –40°CT
A = +25°CT
A = +85°C
Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition
VIL Input LOW Voltage 1355 — 1675 1355 — 1675 1355 — 1675 mV
(Single-Ended)
VIH Input HIGH Voltage 2075 — 2420 2075 — 2420 2075 — 2420 mV
(Single-Ended)
VOL Output LOW Voltage 1355 1480 1605 1355 1480 1605 1355 1480 1605 mV
50Ω to VCC–2V
VOH Output HIGH Voltage 2155 2280 2405 2155 2280 2405 2155 2280 2405 mV
50Ω to VCC–2V
VIHCMR Input HIGH Voltage(4) 1.2 — VCC 1.2 — VCC 1.2 — VCC V
Common Mode Range
(100KEP) LVPECL DC ELECTRICAL CHARACTERISTICS(3)
VCC = 3.3V ±10%, VEE = 0V.
Notes:
3. 10KEP 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.
4. The VIHCMR range is referenced to the most positive side of the differential input signal. See “Input Waveform” section. Single-ended input CLK pin
operation is limited to VEE ≤–3.0V in ECL/LVECL mode.
6
ECL Pro™
SY10EP11U
SY100EP11U
Micrel, Inc.
M9999-111605
hbwhelp@micrel.com or (408) 955-1690
TA = –40°CT
A = +25°CT
A = +85°C
Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition
VIL Input LOW Voltage 3055 — 3375 3055 — 3375 3055 — 3375 mV
(Single-Ended)
VIH Input HIGH Voltage 3775 — 4120 3775 — 4120 3775 — 4120 mV
(Single-Ended)
VOL Outuput LOW Voltage 3055 3180 3305 3055 3180 3305 3055 3180 3305 mV
50Ω to VCC–2V
VOH Output HIGH Voltage 3855 3980 4105 3855 3980 4105 3855 3980 4105 mV
50Ω to VCC–2V
VIHCMR Input HIGH Voltage(6) 2.0 — VCC 2.0 — VCC 2.0 — VCC V
Common Mode Range
(100KEP) PECL DC ELECTRICAL CHARACTERISTICS(5)
VCC = 5.0V ±10%, VEE = 0V.
Notes:
5. 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 are at VCC =
5.0V. They vary 1:1 with VCC.
6. The VIHCMR range is referenced to the most positive side of the differential input signal. See “Input Waveform” section. Single-ended input CLK pin
operation is limited to VCC ≥3.0V in PECL mode.
TA = –40°CT
A = +25°CT
A = +85°C
Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition
VIL Input LOW Voltage –1945 — –1625 –1945 — –1625 –1945 — –1625 mV
(Single-Ended)
VIH Input HIGH Voltage –1225 — –880 –1225 — –880 –1225 — –880 mV
(Single-Ended)
VOL Outuput LOW Voltage –1945 –1820 –1695 –1945 –1820 –1695 –1945 –1820 –1695 mV
50Ω to VCC–2V
VOH Output HIGH Voltage –1145 –1020 –895 –1145 –1020 –895 –1145 –1020 –895 mV
50Ω to VCC–2V
VIHCMR Input HIGH Voltage(8) VEE +1.2 0.0 VEE +1.2 0.0 VEE +1.2 0.0 V
Common Mode Range
(100KEP) ECL/LVECL DC ELECTRICAL CHARACTERISTICS(7)
VCC = 0V, VEE = –5.5V to –2.375V.
Notes:
7. 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.
8. The VIHCMR range is referenced to the most positive side of the differential input signal. See “Input Waveform” section. Single-ended input CLK pin
operation is limited to VEE ≤–3.0V in ECL/LVECL mode.
7
ECL Pro™
SY10EP11U
SY100EP11U
Micrel, Inc.
M9999-111606
hbwhelp@micrel.com or (408) 955-1690
TA = –40°CT
A = +25°CT
A = +85°C
Symbol Parameter Min. Typ. Max. Min. Typ. Max. Min. Typ. Max. Unit Condition
fMAX Max. Toggle Frequency(9) 3——3——3——GHz
tPLH Propagation Delay (Differential)
tPHL D to Q, /Q 140 200 250 160 220 270 180 240 300 ps VCC = 3.3/5V
D to Q, /Q 170 230 300 180 240 310 210 270 360 ps VCC = 2.5V
tSKEW Within-Device Skew(10)Q, /Q — 5 20 — 5 20 — 5 20 ps
Part-to-Part Skew(10) ——130——130 — — 150 ps VCC = 3.3/5V
——110——110 — — 120 ps VCC = 2.5V
tJITTER Cycle-to-Cycle Jitter (RMS) — 0.2 < 1 — 0.2 < 1 — 0.2 < 1 psRMS
VDIFF Input Swing(11) 150 800 1200 150 800 1200 150 800 1200 mV
tr, tfOutput Rise/Fall Time 70 110 170 80 120 180 100 140 200 ps
(20% to 80%)
AC ELECTRICAL CHARACTERISTICS
VCC = 0V; VEE = –5.5V to –2.375V or VCC = 2.375V to 5.5V, VEE = 0V.
Notes:
9. Measured with 750mV input signal, 50% duty cycle. All loading with a 50Ω to VCC –2.0V.
10.Skew is measured between outputs under identical transitions. Duty cycle skew is defined only for differential operation when the delays are
measured from the cross point of the inputs to the cross point of the outputs.
11.See “Input Waveform.”
INPUT WAVEFORM
DV
IHCMR
/D
V
DIFF
=150mV to 1200mV
8
ECL Pro™
SY10EP11U
SY100EP11U
Micrel, Inc.
M9999-111605
hbwhelp@micrel.com or (408) 955-1690
TERMINATION RECOMMENDATIONS
R2
82Ω
R2
82Ω
ZO = 50Ω
ZO = 50Ω
+3.3V +3.3V
Vt = VCC –2V
R1
130Ω
R1
130Ω
+3.3V
Figure 1. Parallel Termination–Thevenin Equivalent
Notes:
1. For +2.5V systems: R1 = 250Ω, R2 = 62.5Ω.
2. For +5.0V systems: R1 = 82Ω.
R2 = 130Ω
Z
= 50Ω
Z
= 50Ω
50Ω50Ω
50Ω
+5.0V or
+3.3V
+5.0V or
+3.3V
“source” “destination”
R
b
Figure 2. Three-Resistor “Y–Termination”
Notes:
1. Power-saving alternative to Thevenin termination.
2. Place termination resistors as close to destination inputs as possible.
3. Rb resistor sets the DC bias voltage equal to Vt. For +3.3V systems Rb = 46Ω to 50Ω. For +5V systems, Rb = 110Ω.
9
ECL Pro™
SY10EP11U
SY100EP11U
Micrel, Inc.
M9999-111606
hbwhelp@micrel.com or (408) 955-1690
8-PIN MSOP (K8-1)
Rev. 01
10
ECL Pro™
SY10EP11U
SY100EP11U
Micrel, Inc.
M9999-111605
hbwhelp@micrel.com or (408) 955-1690
8-PIN SOIC (Z8-1)
Rev. 03
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 WEB http://www.micrel.com
The information furnished by Micrel in this datasheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use.
Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can
reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into
the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s
use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchaser’s own risk and Purchaser agrees to fully indemnify
Micrel for any damages resulting from such use or sale.
© 2005 Micrel, Incorporated.
