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Micrel, Inc.
3.3V/5V 2.5GHz PECL/ECL 1:4 FANOUT BUFFER WITH 2:1 INPUT MUX
ECL ProTM SY100EP15V ECL ProTM
SY100EP15V
FEATURES
High-speed 1:4 PECL/ECL fanout buffer 2:1 multiplexer input Guaranteed AC parameters over temp/voltage: * > 2.5GHz fMAX (toggle) * < 225ps rise/fall times * < 25ps within device skew * < 425ps propagation delay (CLK-to-Q) Low jitter design: * < 1psRMS cycle-to-cycle jitter * < 20psPP total jitter Flexible power supply: 3.3V/5V Wide operating temperature range: -40C to +85C VBB reference for AC-coupled or single-ended applications Output enable/disable function 100K PECL/ECL compatible logic Input accepts PECL/LVPECL/ECL/HSTL logic levels Available in a 16-pin TSSOP package
ECL ProTM
DESCRIPTION
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 -40C to +85C 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 (~400mVPP swing). A VBB 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 ProTM 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 QD 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 TA = 25C, DC Electricals only. 2. Tape and Reel. 3. Pb-Free package is recommended for new designs.
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Micrel, Inc.
ECL ProTM 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 50 to VCC-2V. Unused output pairs may be left floating, or pulled-down with a 2k 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 75k 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 75k pull-down resistor on CLK0 and internal 75k pull-up and pull-down on /CLK0. Default condition for CLK0 is LOW when left floating and VCC/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. VBB reference value is approximately VCC-1.3V, and tracks Vcc 1:1. Maximum sink/source capability for VBB is 0.50mA. For single ended inputs, connect to the unused input through a 50 resistor. Decouple the VBB pin with a 0.01F capacitor to VCC. Single-Ended (LV)PECL/(LV)ECL Compatible Input: This pin includes an internal 75k 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 0.1F//0.01F 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
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Micrel, Inc.
ECL ProTM SY100EP15V
ABSOLUTE MAXIMUM RATINGS(1)
Symbol VCC - VEE VIN IOUT IBB TLEAD TA TSTORE JA Rating Power Supply Voltage Input Voltage (VCC = 0V, VIN not more negative than VEE) Input Voltage (VEE = 0V, VIN not more positive than VCC) Output Current VBB 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
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)
TA = -40C Symbol VCC 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 -- TA = +25C 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 -- TA = +85C Typ. 5.0 3.3 -5.0 -3.3 -- -- -- -- -- Max. 5.5 3.63 -4.5 -2.97 75 150 -- -- -- mA A A A pF VIN = VIH VIN = VIL VIN = VIL Unit V Condition
ICC IIH IIL
CIN
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.
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Micrel, Inc.
ECL ProTM SY100EP15V
(100KEP) LVPECL DC ELECTRICAL CHARACTERISTICS(1)
VCC = 3.0V 10%, VEE = 0V
TA = -40C Symbol VIL VIH VOL VOH VBB VIHCMR
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 VCC. Output load is 50 to VCC-2V. 2. VBB varies 1:1 with VCC. 3. The VIHCMR range is referenced to the most positive side of the differential input signal.
TA = +25C Max. 1675 2420 1605 2405 1975 VCC Min. 1355 2075 1355 2155 1775 1.2 Typ. -- -- 1480 2280 1875 -- Max. 1675 2420 1605 2405 1975 VCC Min. 1355 2075 1355 2155 1775 1.2
TA = +85C Typ. -- -- 1480 2280 1875 -- Max. 1675 2420 1605 2405 1975 VCC Unit mV mV mV mV mV V Condition VCC = 3.3V VCC = 3.3V VCC = 3.3V VCC = 3.3V VCC = 3.3V
Parameter Input LOW Voltage (Single-Ended) Input HIGH Voltage (Single-Ended) Output LOW Voltage Output HIGH Voltage Reference Voltage(2)
Min. 1355 2075 1355 2155 1775 1.2
Typ. -- -- 1480 2280 1875 --
Input HIGH Voltage Common Mode Range(3)
(100KEP) PECL DC ELECTRICAL CHARACTERISTICS(1)
VCC = 5.0V 10%, VEE = 0V
TA = -40C Symbol VIL VIH VOL VOH VBB VIHCMR
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 VCC. Output load is 50 to VCC-2V. 2. VBB varies 1:1 with VCC. 3. The VIHCMR range is referenced to the most positive side of the differential input signal.
TA = +25C Max. 3375 4120 3305 4105 3675 VCC Min. 3055 3775 3055 3855 3475 1.2 Typ. -- -- 3180 3980 3575 -- Max. 3375 4120 3305 4105 3675 VCC Min. 3055 3775 3055 3855 3475 1.2
TA = +85C Typ. -- -- 3180 3980 3575 -- Max. 3375 4120 3305 4105 3675 VCC Unit mV mV mV mV mV V Condition VCC = 5V VCC = 5V VCC = 5V VCC = 5V VCC = 5V
Parameter Input LOW Voltage (Single-Ended) Input HIGH Voltage (Single-Ended) Output LOW Voltage Output HIGH Voltage Output Voltage Reference(2) Voltage(3)
Min. 3055 3775 3055 3855 3475 1.2
Typ. -- -- 3180 3980 3575 --
Input HIGH Common Mode Range
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Micrel, Inc.
ECL ProTM SY100EP15V
(100KEP) LVECL DC ELECTRICAL CHARACTERISTICS(1)
VCC = 0V, VEE = -2.97V to -3.63V
TA = -40C Symbol VIL VIH VOL VOH VBB VIHCMR
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. 2. The VIHCMR range is referenced to the most positive side of the differential input signal.
TA = +25C Max. Min. Typ. -- -- Max. Min.
TA = +85C Typ. -- -- Max. -1625 -880 Unit mV mV mV 50 to VCC-2V mV 50 to VCC-2V mV V Condition
Parameter Input LOW Voltage (Single-ended) Input HIGH Voltage (Single-ended) Output LOW Voltage Output HIGH Voltage Output Reference Voltage Input HIGH Voltage Common Mode Range(2)
Min. -1945 -1165
Typ. -- --
-1625 -1945 -880 -1165
-1625 -1945 -880 -1165
-1945 -1820 -1695 -1945 -1820 -1695 -1945 -1820 -1695 -1145 -1020 -895 -1145 -1020 -895 -1145 -1020 -895
-1525 -1425 -1325 -1525 -1425 -1325 -1525 -1425 -1325 VEE +1.2 -- 0.0 VEE +1.2 -- 0.0 VEE +1.2 -- 0.0
(100K) ECL DC ELECTRICAL CHARACTERISTICS(1)
VCC = 0V, VEE = -4.5V to -5.5V
TA = -40C Symbol VIL VIH VOL VOH VBB VIHCMR
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. 2. The VIHCMR range is referenced to the most positive side of the differential input signal.
TA = +25C Max. Min. Typ. -- -- Max. Min.
TA = +85C Typ. -- -- Max. -1625 -880 Unit mV mV mV 50 to VCC-2V mV 50 to VCC-2V mV V Condition
Parameter Input LOW Voltage Input HIGH Voltage Output LOW Voltage Output HIGH Voltage Output Reference Voltage Input HIGH Voltage Common Mode Range(2)
Min. -1945 -1225
Typ. -- --
-1625 -1945 -880 -1225
-1625 -1945 -880 -1225
-1945 -1820 -1695 -1945 -1820 -1695 -1945 -1820 -1695 -1145 -1020 -895 -1145 -1020 -895 -1145 -1020 -895
-1525 -1425 -1325 -1525 -1425 -1325 -1525 -1425 -1325 VEE +1.2 -- 0.0 VEE +1.2 -- 0.0 VEE +1.2 -- 0.0
HSTL INPUT DC ELECTRICAL CHARACTERISTICS
VCC = 2.97V to 3.63V, VEE = 0V
TA = -40C Symbol VIH VIL Parameter Input HIGH Voltage Input LOW Voltage Min. 1200 -- Typ. -- -- Max. -- 400 Min. 1200 -- TA = +25C Typ. -- -- Max. -- 400 Min. 1200 -- TA = +85C Typ. -- -- Max. -- 400 Unit mV mV
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Micrel, Inc.
ECL ProTM SY100EP15V
AC ELECTRICAL CHARACTERISTICS
LVPECL: VCC = 2.97V to 3.63V, VEE = 0V; PECL: VCC = 4.5V to 5.5V, VEE = 0V ECL: VCC = 0V, VEE = -4.5V to -5.5V; LVECL: VCC = 0V, VEE = -2.97V to -3.63V
TA = -40C Symbol fMAX(1) tPD Parameter Maximum Frequency PropagationDelay to Output PECL/ECL Diff. IN-to-Q IN (Single-Ended)-to-Q SEL-to-Q LVPECL/LVECL Diff. IN-to-Q IN (Single-Ended)-to-Q SEL-to-Q tSKEW(2) tS(3) tH
(3)
TA = +25C Max. -- Min. 2.5 Typ. -- Max. -- Min. 2.5
TA = +85C Typ. -- Max. -- Unit GHz
Min. 2.5
Typ. --
275 250 250 275 250 250 -- -- 100 200 -- -- 150 75
-- -- -- -- -- -- -- -- 0 50 0.2 <20 800 --
425 450 450 425 450 450 25 150 -- -- 1 -- 1200 225
275 250 250 275 250 250 -- -- 100 200 -- -- 150 75
375 400 400 375 400 400 15 100 0 50 0.2 <20 800 130
425 450 450 425 450 450 25 150 -- -- 1 -- 1200 225
275 250 250 275 250 250 -- -- 100 200 -- -- 150 85
-- -- -- -- -- -- -- -- 0 50 0.2 <20 800 --
425 450 450 425 450 450 25 150 -- -- 1 -- 1200 225
ps ps ps ps ps ps ps ps ps ps psRMS psPP mV ps
Within-Device Skew Part-to-Part Skew Set-Up Time Hold Time
(Diff.) (Diff.) /EN to CLK /EN to CLK
tJITTER VID t r, t f
Notes:
Cycle-to-Cycle Total Jitter (622MHz clock)(5) Input Voltage Range Output Rise/Fall Times (20% to 80%)
Jitter(4)
1. fMAX is defined as the maximum toggle frequency. Measured with 750mV input signal, 50% duty cycle, output swing 400mV(diff), all loading with 50 to VCC-2V. 2. Skew is measured between outputs under identical transitions. 3. Set-up and hold times apply to synchronous applications that intend to enable/disable before then ext clock cycle. For asynchronous applications, set-up and hold time does not apply. 4. Cycle-to-cycle jitter definition: The variation in period between adjacent cycles over a random sample of adjacent cycle pairs. TJITTER_CC = Tn-Tn+1 where T is the time between rising edges of the output signal. 5. Total jitter definition: with an ideal clock input applied to one channel of the MUX, no more than one output edge in 1012 output edges will deviate by more than the specified peak-to-peak jitter value.
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Micrel, Inc.
ECL ProTM SY100EP15V
TERMINATION RECOMMENDATIONS
+3.3V
+3.3V
ZO = 50 ZO = 50
R1 130
R1 130
+3.3V
R2 82
R2 82
Vt = VCC -2V
Figure 1. Parallel Termination-Thevenin Equivalent
Notes: 1. For +2.5V systems: R1 = 250, R2 = 62.5. 2. For +5.0V systems: R1 = 82, R2 = 130.
+3.3V
Z = 50 Z = 50 50 50
Rb
+3.3V
"source" 50
"destination" (Optional) C1 0.01F
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 = 46 to 50. For +5V systems, Rb = 110. 4. C1 is an optional bypass capacitor intended to compensate for any tr/tf mismatches.
+3.3V +3.3V R1 130 ZO = 50 /Q Vt = VCC -2V R2 82
+3.3V R1 130 50 VBB R2 82 0.01F +3.3V +3.3V
Q
Figure 3. Terminating Unused I/O
Notes 1. Unused output (/Q) must be terminated to balance the output. 2. Micrel's differential I/O logic devices include a VBB reference pin . 3. Connect unused input through 50 to VBB. Bypass with a 0.01F capacitor to VCC, not GND. 4. For +2.5V systems: R1 = 250, R2 = 62.5. M9999-120505 hbwhelp@micrel.com or (408) 955-1690
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Micrel, Inc.
ECL ProTM SY100EP15V
16-PIN TSSOP (K4-16-1)
Rev. 01
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131
TEL
USA
+ 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. (c) 2005 Micrel, Incorporated. M9999-120505 hbwhelp@micrel.com or (408) 955-1690
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