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Micrel, Inc.
ENHANCED DIFFERENTIAL RECEIVER
Precision Edge(R) SY89250V Precision Edge(R)
SY89250V
FEATURES
s s s s s 3.3V and 5V power supply options 250ps propagation delay Very high voltage gain Ideal for Pulse Amplifier and Limiting Amplifier applications Data synchronous Enable/Disable (/EN) on QHG and /QHG provides for complete glitchless gating of the outputs Ideal for gating timing signals Complete solution for high quality, high frequency crystal oscillator applications Available in an ultra-small 8-pin (2mm x 2mm) MLFTM package Precision Edge(R)
DESCRIPTION
The SY89250V is a differential PECL/ECL receiver/buffer in a space saving (2mm x 2mm) MLFTM package. The device is functionally equivalent to the SY100EL16VC, but features a 70% smaller footprint. It provides a VBB output for either single-ended application or as a DC bias for AC-coupling to the device. The SY89250V provides an /EN input which is synchronized with the data input (D) signal in a way that provides glitchless gating of the QHG and /QHG outputs. When the /EN signal is LOW, the input is passed to the outputs and the data output equals the data input. When the data input is HIGH and the /EN goes HIGH, it will force the QHG LOW and the /QHG HIGH on the next negative transition of the data input. If the data input is LOW when the /EN goes HIGH, the next data transition to a HIGH is ignored and QHG remains LOW and /QHG remains HIGH. The next positive transition of the data input is not passed on to the data outputs under these conditions. The QHG and /QHG outputs remain in their disabled state as long as the /EN input is held HIGH. The /EN input has no influence on the /Q output and the data input is passed on (inverted) to this output whether /EN is HIGH or LOW. This configuration is ideal for crystal oscillator applications, where the oscillator can be free running and gated on and off synchronously without adding extra counts to the output. All support documentation can be found on Micrel's web site at www.micrel.com.
s s s
APPLICATIONS
s Oscillator modules
BLOCK DIAGRAM
FUNCTIONAL CROSS REFERENCE
Micrel Part Number SY89250V PECL/ECL 100k Functional Cross SY100EL16VC
/Q 1 D2 VBB 3
VBB LEN Q
LATCH OE
8 7 6 5
VCC QHG /QHG VEE
/EN 4
D
Precision Edge is a registered trademark of Micrel, Inc. MicroLeadFrame and MLF are trademarks of Amkor Technology, Inc. M9999-052505 hbwhelp@micrel.com or (408) 955-1690
Rev.: B Amendment: /0
1
Issue Date: May 2005
Micrel, Inc.
Precision Edge(R) SY89250V
PACKAGE/ORDERING INFORMATION
/Q D VBB /EN
1 2 3 4 8 7 6 5
VCC QHG /QHG VEE
Ordering Information(1)
Part Number SY89250VMI SY89250VMITR(2) SY89250VMG SY89250VMGTR(2) Package Type MLF-8 MLF-8 MLF-8 MLF-8 Operating Range Industrial Industrial Industrial Industrial Package Marking 250 250 250 with Pb-Free bar-line indicator 250 with Pb-Free bar-line indicator Lead Finish Sn-Pb Sn-Pb Pb-Free NiPdAu Pb-Free NiPdAu
8-Pin MLFTM (Ultra-Small Outline)
Notes: 1. Contact factory for die availability. Dice are guaranteed at TA = 25C, DC electricals only. 2. Tape and Reel.
PIN DESCRIPTION
Pin Number 1 2 Pin Name /Q D Type 100k 100k Pin Function Single-Ended PECL/ECL Feedback Output. Single-Ended PECL/ECL Input: The signal input includes an internal 75k pull-down ECL Input resistor. If input is left open, Q output will default to LOW. See "Input Interface Applications" section for single-ended inputs. Bias Voltage: VCC-1.3V. Used as reference voltage when AC-coupling to the D input. Max sink/source is 0.5mA. /EN Input which is synchronized with data input (D) signal in a way that provides glitchless gating of QHG and /QHG outputs. Includes internal 75k pull-down resistor. Default is LOW Negative Power Supply: VEE and exposed pad must be tied to most negative supply. For PECL/LVPECL connect to ground. Differential PECL/ECL Output: Defaults to LOW if D inputs left open. See "Output Interface Applications" section for recommendations on terminations. Positive Power Supply: Bypass with 0.1F//0.01F low ESR capacitors.
3 4
VBB /EN
Reference Output Voltage Enable Input
5 6, 7
VEE, Exposed Pad /QHG, QHG
Negative Power Supply 100k ECL Output Positive Power Supply
8
VCC
TRUTH TABLE
/EN 0 1 Data Logic Low QHG Output
M9999-052505 hbwhelp@micrel.com or (408) 955-1690
2
Micrel, Inc.
Precision Edge(R) SY89250V
Absolute Maximum Ratings(1)
Power Supply Voltage (VCC) ....................... -0.5V to +6.0V ECL Input Voltage (VIN) ............................ 0V to VCC +0.5V Voltage Applied to Output at HIGH State (VOUT) ........................................................ -0.5V to VCC Current Applied to Output at LOW State (IOUT) .......................................... Twice the rated IOL mA Lead Temperature (soldering, 20 sec.) ..................... 260C Storage Temperature (TS) ....................... -65C to +150C
Operating Ratings(2)
Power Supply Voltage |VCC-VEE| .... 3.3V 10% or 5V 10% Ambient Temperature (TA) ......................... -40C to +85C Package Thermal Resistance,(3) MLFTM (JA) Still-Air ............................................................. 93C/W MLFTM (JB), ....................................................... 60C/W
DC ELECTRICAL CHARACTERISTICS
TA = -40C to +85C; unless otherwise stated. Symbol VEE IEE IIH VBB Parameter Power Supply Power Supply Current Input HIGH Current Output Reference Voltage Condition |VCC-VEE| |VCC-VEE| Min 3.0 4.5 Typ 3.3 5.0 Max 3.6 5.5 46 150 VCC -1.38 VCC -1.32 VCC -1.26 Units V V mA A V
DC ELECTRICAL CHARACTERISTICS
VCC = +3.3V 10% or +5V 10% and VEE = 0V; VCC = 0V and VEE = -3.3V 10% or -5V 10%; TA = -40C to +85C; unless otherwise stated. Symbol VOH VOL VIH VIL VBB VPP IIH IIL
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. The data sheet limits are not guaranteed if the device is operated beyond the operating ratings. 3. Package thermal resistance assumes exposed pad is soldered (or equivalent) to the devices most negative potential on the PCB. 4. Output loaded with 50 to VCC-2V.
Parameter Output HIGH Voltage Output LOW Voltage Input HIGH Voltage Input LOW Voltage Output Reference Voltage Minimum Input Swing Input HIGH Current Input LOW Current
Condition Note 4 Note 4
Min VCC-1.085 VCC-1.830 VCC-1.165 VCC-1.810 VCC-1.38 150
Typ
Max VCC-0.880 VCC-1.555 VCC-0.880 VCC-1.475 VCC-1.26 150
Units V V V V V mV A A
0.5
M9999-052505 hbwhelp@micrel.com or (408) 955-1690
3
Micrel, Inc.
Precision Edge(R) SY89250V
AC ELECTRICAL CHARACTERISTICS
VEE = VEE(min) to VEE(max); VCC = GND; TA = -40C to +85C; unless otherwise stated. Symbol tpd Parameter Propagation Delay to: Q, /Q Output QHG, /QHG Output tS tH tSKEW VPP VCMR tr, tf
Notes: 5. Duty cycle skew is the difference between a tpd propagation delay through a device. 6. Minimum input swing for which AC parameters are guaranteed. The device has a DC gain of 40 to Q, /Q outputs and a DC gain of 200 or higher to /QHG, QHG outputs. 7. The CMR range is referenced to the most positive side of the differential input signal. Normal operation is obtained if the HIGH level falls within the specified range and the peak-to-peak voltage lies between VPP(min) and 1V. The lower end of the CMR range varies 1:1 with VEE. The numbers in the spec table assume a nominal VEE = -3.3V. Note for PECL operation, the VCMR(min) will be fixed at 3.3V - |VCMR(min)|.
Condition D (Diff) D (SE) D (Diff) D (SE) /EN /EN (Diff) /EN /EN Note 5 Note 6 Note 7 At full output swing
Min
Typ
Max 380 430 730 780
Units ps ps ps ps ps ps
Set-Up Time Hold Time Duty Cycle Skew Minimum Input Swing Common Mode Range Output Q Rise/Fall Times (20% to 80%)
150 150 5 150 -1.3 100 225 -0.4 350 20
ps mV V ps
TIMING DIAGRAM
D
tS tH
/EN
Q
QHG
M9999-052505 hbwhelp@micrel.com or (408) 955-1690
4
Micrel, Inc.
Precision Edge(R) SY89250V
OUTPUT INTERFACE APPLICATIONS
VCC
VCC
R1 ZO = 50 ZO = 50 VCC --2V R2
VCC = 3.3V; R1 = 130, R2 = 82 VCC = 5V; R1 = 83, R2 = 125
R1
VCC
VCC
ZO = 50 ZO = 50 50 50 Rpd
VCC
R2
VCC = 3.3V; Rpd = 50 VCC = 5V; Rpd = 100
C (Optional) 0.01F
Figure 1a. Parallel Thevenin-Equivalent Termination
VCC VCC VCC R1 R1 ZO = 50 VCC --2V
Figure 1b. Three Resistor "Y Termination"
R3
VCC
R2
R2
R4 VCC --1.3V
VCC = 3.3V; R1 = 130, R2 = 82, R3 = 1k, R4 = 1.6k, VCC = 5V; R1 = 83, R2 = 125, R3 = 1k, R4 = 2.8k,
Figure 1c. Terminating Unused I/O
RELATED PRODUCT AND SUPPORT DOCUMENTATION
Part Number SY89306/316V SY89206/216V HBW Solutions Function 3.3V/5V 2.5GHz PECL/ECL Differential Receiver/Buffer 3.3V/5V 1GHz PECL/ECL Differential Receiver/Buffer New Products and Applications Data Sheet Link www.micrel.com/product-info/products/sy89306-316v.shtml www.micrel.com/product-info/products/sy89206-216v.shtml www.micrel.com/product-info/products/solutions.shtml
M9999-052505 hbwhelp@micrel.com or (408) 955-1690
5
Micrel, Inc.
Precision Edge(R) SY89250V
8 LEAD ULTRA-SMALL EPAD-MicroLeadFrameTM (MLF-8)
Package EP- Exposed Pad
Die
CompSide Island
Heat Dissipation Heat Dissipation VEE Heavy Copper Plane VEE Heavy Copper Plane
PCB Thermal Consideration for 8-Pin MLFTM Package Package Notes: 1. Package meets Level 2 qualification. 2. All parts are dry-packaged before shipment. 3. Exposed pads must be soldered to a ground for proper thermal management.
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. M9999-052505 hbwhelp@micrel.com or (408) 955-1690
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