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Micrel, Inc.
3.3V ECL/PECL 2:8 DIFFERENTIAL FANOUT BUFFER
SY100E310L
SY100E310L
FEATURES
s Guaranteed AC performance over temperature and voltage: * > 800MHz fMAX (typical) * < 50ps within-device skew s Low voltage operation: * LVPECL: +3.3V 10% * LVECL: -3.3V 10% s Internal 75k pull-down resistors s Guaranteed over industrial temperature range: -40C to +85C s Pin-for-pin, plug-in replacement for MC100LVE310 s Available in 28-pin PLCC package
DESCRIPTION
The SY100E310L is a 3.3V, precision 2:8 ECL/PECL fanout buffer optimized for precision low-skew clock distribution. The SY100E310L features fully differential clock paths to minimize both device and system skew resulting in skew performance of < 50ps. In addition, the device includes a 2:1 multiplexer input for redundant switchover applications. The SY100E310L is optimized for low voltage +3.3V LVPECL or -3.3V LVECL applications. Data sheets and support documentation can be found on Micrel's web site at www.micrel.com.
APPLICATIONS
s Communications clock distribution s Redundant clock switchover s High-end server clock distribution
CROSS REFERENCE TABLE
Micrel Semiconductor SY100E310LJI SY100E310LJITR On Semiconductor MC100LVE310FN MC100LVE310FNR2
FUNCTIONAL BLOCK DIAGRAM
Q0 /Q0 Q1
TYPICAL PERFORMANCE
Output Swing vs. Frequency
900 800 Q AMPLITUDE (mV) 700 600 500 400 300 200 100 0
/Q1 Q2 /Q2 CLKA /CLKA CLKB /CLKB /Q4 SEL Q5 /Q5 Q6 /Q6 Q7 VBB /Q7 Q3 /Q3 Q4
1000
1200
1400
CLK FREQUENCY (MHz)
M9999-032206 hbwhelp@micrel.com or (408) 955-1690
Rev.: D
1600
Amendment: /0
0
200
400
600
1
800
Issue Date: March 2006
Micrel, Inc.
SY100E310L
PACKAGE/ORDERING INFORMATION
CLKB VBB /CLKA VCC CLKA CLK_SEL VEE
Ordering Information(1)
Part Number Package Type J28-1 J28-1 J28-1 J28-1 Operating Range Industrial Industrial Industrial Industrial Package Marking SY100E310LJI SY100E310LJI SY100E310JY with Pb-Free bar-line indicator SY100E310JY with Pb-Free bar-line indicator Lead Finish Sn-Pb Sn-Pb Matte-Sn Matte-Sn
4 3 2 1 28 27 26 /CLKB NC /Q7 VCCO Q7 /Q6 Q6 5 6 7 8 9 10 11 12 13 14 15 16 17 18 25 24 23 22 21 20 19 Q0 /Q0 Q1 VCCO /Q1 Q2 /Q2
SY100E310JI SY100E310JITR(2) SY100E310JY(3) SY100E310JYTR(2, 3)
Notes:
/Q5 Q5 /Q4 VCCO Q4 /Q3 Q3
28-Pin PLCC (J28-1)
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.
PIN DESCRIPTION
Pin Number 1 28, 2, 4, 5 3 6 8, 15, 22 24, 21, 19, 17, 14, 12, 10, 7 25, 23, 20, 18, 16, 13, 11, 9, 26 27 Pin Name VCC CLKA, /CLKA CLKB, /CLKB VBB NC VCCO /Q0, /Q1, /Q2, /Q3 /Q4, /Q5, /Q6, /Q7 Q0, Q1, Q2, Q3 Q4, Q5, Q6, Q7 VEE CLK_SEL Pin Function Positive Core Power Supply. Bypass with 0.1F||0.01F low ESR capacitors. Not internally connected to VCCO. Must be externally connected to VCCO on PCB. Differential Inputs: These input pairs are the differential data inputs to the device. Reference Voltage Output. Used for AC-coupled inputs or single-ended inputs. No Connect. Positive Power Supply. Bypass with 0.1F||0.01F low ESR capacitors. Not internally connected to VCC. Must be externally connected to VCC on PCB. Differential Outputs. Differential Outputs. Negative Supply. Single-Ended Clock Select.
M9999-032206 hbwhelp@micrel.com or (408) 955-1690
2
Micrel, Inc.
SY100E310L
Absolute Maximum Ratings(1)
Supply Voltage (VCC) ................................. -0.5V to +4.0V Input Voltage (VIN) ........................................ -0.5V to VCC Termination Current(3) Source or sink current on VBB (IBB) ..................... 0.5mA Input Current Source or sink current (CLKA, /CLKA, CLKB, /CLKB, CLK_SEL) ......... 50mA Lead Temperature (soldering, 20 sec.) ................... +260C Storage Temperature (TS) ...................... -65C to +150C
Operating Ratings(2)
Supply Voltage (VCC) ................................. +3.0V to +3.6V Ambient Temperature (TA) ........................ -40C to +85C Package Thermal Resistance PLCC (JA) Still-Air ......................................................... 63.5C/W 500lfpm ........................................................ 43.5C/W
DC ELECTRICAL CHARACTERISTICS(4)
TA = -40C to +85C; unless noted. Symbol VCC Parameter Power Supply Condition Min 3.0 Typ 3.3 Max 3.6 Units V
LVPECL DC ELECTRICAL CHARACTERISTICS(4, 5)
VCC = +3.3V, VEE = 0V; TA = -40C to +85C; unless noted. Symbol ICC VOH VOL VIH VIL VIHCMR Parameter Power Supply Current Output High Voltage (Q0-Q7, /Q0-/Q7) Output Low Voltage (Q0-Q7, /Q0-/Q7) Input High Voltage (CLKA, /CLKA, CLKB, /CLKB, CLK_SEL) Input Low Voltage (CLKA, /CLKA, CLKB, /CLKB, CLK_SEL) Input High Voltage Common Mode Range (Differential) (CLKA, / CLKA, CLKB, /CLKB) Output Reference Voltage Input HIGH Current (CLKA, /CLKA, CLKB,/CLKB, CLK_SEL) Input LOW Current (CLKA, /CLKA, CLKB, /CLKB, CLK_SEL) 0.5 Note 6 Condition No load, max. VCC RL = 50 to VCC -2V RL = 50 to VCC -2V 2215 1470 2135 1490 1.8 Min Typ 55 2345 1595 Max 70 2420 1680 2420 1825 2.9 Units mA mV mV mV mV V
VBB IIN IIL
Notes:
1.92
2.04 150
V A A
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. The data sheet limits are not guaranteed if the device is operated beyond the operating ratings. 3. Due to the limited drive capability use for input of the same package only. 4. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. 5. Input and output parameters vary 1:1 with VCC. VCC can vary 0.3V. 6. VIHCMR is defined as the range within which the VIH level may vary with the device still meeting the propagation delay specification. The VIL level must be such that the peak-to-peak voltage is less than 1.0V and then greater than or equal to VPP(min).
M9999-032206 hbwhelp@micrel.com or (408) 955-1690
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Micrel, Inc.
SY100E310L
LVNECL DC ELECTRICAL CHARACTERISTICS(7, 8)
VCC = +3.3V, VEE = 0V; TA = -40C to +85C; unless noted. Symbol VOH VOL VIH VIL VIHCMR Parameter Output High Voltage (Q0-Q7, /Q0-/Q7) Output Low Voltage (Q0-Q7, /Q0-/Q7) Input High Voltage (CLKA, /CLKA, CLKB, /CLKB, CLK_SEL) Input Low Voltage (CLKA, /CLKA, CLKB, /CLKB, CLK_SEL) Input High Voltage Common Mode Range (Differential) (CLKA, / CLKA, CLKB, /CLKB) Output Reference Voltage Input HIGH Current (CLKA, /CLKA, CLKB,/CLKB, CLK_SEL) Input LOW Current (CLKA, /CLKA, CLKB, /CLKB, CLK_SEL) 0.5 Note 9 Condition RL = 50 to VCC -2V RL = 50 to VCC -2V Min -1085 -1830 -1165 -1810 -1.5 Typ -955 -1705 Max -880 -1620 -880 -1475 -0.4 Units mV mV mV mV V
VBB IIN IIL
-1.38
-1.26 150
V A A
AC ELECTRICAL CHARACTERISTICS
VCC = +3.0 to +3.6V and VEE = 0V or VCC = 0V and VEE = -3.0 to -3.6V; TA = -40C to +85C; unless noted. Symbol fMAX tPD Parameter Maximum Operating Frequency Propagation Delay CLKA-to-Q, CLKB-to-Q (Differential) CLKA-to-Q, CLKB-to-Q (Single-ended) tSKEW tJITTER VPP tr, tf
Notes: 7. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established. 8. Input and output parameters vary 1:1 with VCC. VCC can vary 0.3V. 9. VIHCMR is defined as the range within which the VIH level may vary with the device still meeting the propagation delay specification. The VIL level must be such that the peak-to-peak voltage is less than 1.0V and then greater than or equal to VPP(min). 10. The differential propagation delay is defined as the delay from the crossing points of the differential input signals to the crossing point of the differential output signals. 11. The single-ended propagation delay is defined as the delay from the 50% point of the input signal to the 50% point of the output signal. 12. The within-device skew is defined as the worst case difference between any two similar delay paths within a single device. 13. VPP(min) is defined as the minimum input differential voltage which will cause no increase in the propagation delay. The VPP(min) is AC limited for the E310L as a differential input as low as 50 mV will still produce full ECL levels at the output.
Condition VOUT = 400mV Note 10 Note 11 Note 12
Min
Typ 800
Max
Units MHz
525 500
725 750 50 200 1
ps ps ps ps psRMS
Within-Device Skew Part-to-Part Skew (Differential) Cycle-to-Cycle Jitter Input Swing Rise / Fall Time (20% to 80%) (Q0-Q7, /Q0-/Q7)
Note 13
500 160 375
1000 600
mV ps
M9999-032206 hbwhelp@micrel.com or (408) 955-1690
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Micrel, Inc.
SY100E310L
TYPICAL OPERATING CHARACTERISTICS
VCC = 3.3V, TA = 25C
Output Swing vs. Frequency
900 PROPAGATION DELAY (ps) 800 Q AMPLITUDE (mV) 700 600 500 400 300 200 100 1000 1200 1400 1600 0 200 400 600 800 0 700 675 650 625 600 575 550 525
Input to Q Propagation Delay vs. Temperature
SEL-Q
CLK-Q(S-E)
CLK-Q(Diff)
500 -50 -25 0 25 50 75 100 TEMPERATURE (C) (Forced Air)
CLK FREQUENCY (MHz)
RELATED PRODUCT AND SUPPORT DOCUMENTATION
Part Number HBW Solutions Function New Products and Applications Data Sheet Link www.micrel.com/product-info/products/solutions.shtml
M9999-032206 hbwhelp@micrel.com or (408) 955-1690
5
Micrel, Inc.
SY100E310L
28-PIN PLCC (J28-1)
Rev. 03
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) 2006 Micrel, Incorporated. M9999-032206 hbwhelp@micrel.com or (408) 955-1690
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