Micrel, Inc. SuperLite™ SY55851 SuperLite™ SY55851A 2.5V/3V, 3.0GHz CML AnyGate®ANY LOGIC WITH 50Ω or 100Ω OUTPUTS SY55851 SY55851A FEATURES ■ Guaranteed AC parameters over temperature: • fMAX > 3.0GHz (SY55851A) • tr / tf < 100ps • Propagation delay < 280ps ■ Guaranteed operation over –40°C to +85°C temperature range ■ Wide supply voltage range: 2.3V to 3.6V ■ Single IC provides 8 logic functions ■ 2:1 MUX capability ■ Fully differential I/O ■ Source terminated CML outputs for fast edge rates: • SY55851 for 100Ω load • SY55851A for 50Ω load ■ Guaranteed matched propagation delays: • Select (S)-to-out: < 280ps • Input (A and B)-to-out: < 280ps ■ Accepts PECL, LVPECL, CML input signals ■ Functions as a PECL/LVPECL-to-CML translator ■ Available in a 10-pin (3mm × 3mm) MSOP package SuperLite™ DESCRIPTION The SY55851 and SY55851A are highly flexible, universal logic gates capable of up to 3.0GHz operation (SY55851A). These AnyGate® differential logic devices will produce all possible logic functions of two Boolean variables. They can be configured as any of the following gates: AND, NAND, OR, NOR, XOR, XNOR, DELAY, NEGATION (NOT). The SY55851 and SY55851A can also function as a 2-input multiplexer. The SY55851 has an output stage optimized for 100Ω loads, and the SY55851A is optimized for 50Ω loads. The differential inputs for both devices are normally terminated with a single resistor (100Ω) between the true and complement pins. APPLICATIONS ■ ■ ■ ■ FUNCTIONAL BLOCK DIAGRAM Port bypass Data communication systems Wireless communication systems Telecom systems S A B 2 2 2 0 S 2 Q 1 AnyGate is a registered trademarks of Micrel, Inc. SuperLite is trademarks of Micrel, Inc. M9999-072909 [email protected] or (408) 955-1690 Rev.: E 1 Amendment: /0 Issue Date: July 2009 SuperLite™ SY55851 SY55851A Micrel, Inc. PACKAGE/ORDERING INFORMATION Ordering Information(1) S 1 10 VCC /S 2 9 /B A 3 8 B /A 4 7 Q GND 5 6 /Q 8-Pin MSOP (K10-1) Part Number Package Type Operating Range Package Marking Lead Finish SY55851UKI K10-1 Industrial 851U Sn-Pb SY55851UKITR(2) K10-1 Industrial 851U Sn-Pb SY55851AUKI K10-1 Industrial 851A Sn-Pb SY55851AUKITR(2) K10-1 Industrial 851A Sn-Pb SY55851UKG(3) K10-1 Industrial 851U with Pb-Free bar-line indicator Pb-Free NiPdAu SY55851UKGTR(2, 3) K10-1 Industrial 851U with Pb-Free bar-line indicator Pb-Free NiPdAu SY55851AUKG(3) K10-1 Industrial 851A with Pb-Free bar-line indicator Pb-Free NiPdAu SY55851AUKGTR(2, 3) K10-1 Industrial 851A with Pb-Free bar-line indicator Pb-Free 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 recommended for new designs. PIN DESCRIPTION Pin Number Pin Name 1, 2 S, /S CML, PECL, LVPECL Input Selector: This differential CML input is one of the inputs to the logic block. It represents either one Boolean input for a 2-variable logic function, or the select input for a 2-input MUX. 3, 4 A, /A CML, PECL, LVPECL Input: This is one of the differential inputs to the logic block. For a 2-variable logic function, it is either a constant value or a Boolean input. For a 2input MUX, this signal represents the output when S is set to logic zero. 5 GND Ground. 6, 7 /Q, Q Differential CML Output: This is the differential CML output for the logic block. For termination guidelines, see Figure 3. 8, 9 B, /B CML, PECL, LVPECL Input: This is one of the differential inputs to the logic block. For a 2-variable logic function, it is either a constant value or a Boolean input. For a 2input MUX, this signal represents the output when S is set to logic one. 10 VCC VCC. M9999-072909 [email protected] or (408) 955-1690 Pin Function 2 SuperLite™ SY55851 SY55851A Micrel, Inc. FUNCTIONAL DESCRIPTION input at static logic zero at VCC ≥ 3.0V, leave both inputs unconnected or tie the complement input to VCC. For VCC < 3.0V applications, connect the complement input to VCC and leave the true input unconnected. To make an input static logic one, connect the true input to VCC, and leave the complement input unconnected. These are the only safe ways to cause inputs to be at a static value. In particular, no input pin should be directly connected to ground. All NC (no connect) pins should be unconnected. Establishing Static Logic Inputs The true pin of an input pair is internally biased to ground through a 75kΩ resistor. The complement pin of an input pair is internally biased to VCC/2 through an internal voltage divider consisting of two 75kΩ resistors. Since some logic functions necessitate an output to be connected to two inputs, SY55851/A inputs have no internal terminations. Typically, one resistor between the true and complement input is all that is required, as per Figure 3. To keep an VCC Input NC /Input NC Input NC /Input For VCC Figure 1. Hard Wiring A Logic “1” Note 1. 3.0V Applications (1) Input is either A, B, S input, and /Input is either /A, /B, /S input. NC Input VCC /Input For VCC < 3.0V Applications Figure 2. Hard Wiring A Logic “0” (1) M9999-072909 [email protected] or (408) 955-1690 3 SuperLite™ SY55851 SY55851A Micrel, Inc. TRUTH TABLES AND/NAND β A S A /S /A B /B NC VCC α S A /S /A B /B VCC L L L H /Q (α ⋅ β) H L L H L L H L H L H H H L α A B β S α+β Q (α + β) /Q OR/NOR Q α+β /Q (α + β) α β Q α⊕β /Q (α ⊕ β) S A /S /A B /B H L L H H L H L L H H H L H H H H L α A B β S α⊕β Q (α ⊕ β) /Q L H L L H L H H H L H L L H L H L H L H DELAY/NEGATION S A /S /A B /B VCC L H XOR/XNOR VCC NC (α (α⋅⋅β) /Q L β S A /S /A B /B α⋅β Q L NC α β S Q α⋅β β α α B Q α /Q α α A B S α Q α /Q L X L L H H X L H L A β B S β Q β /Q X L H L H X H H H L Q /Q NC Q β /Q β S 2:1 MUX A S 0 Q B 1 M9999-072909 [email protected] or (408) 955-1690 4 H B /B L A /A SuperLite™ SY55851 SY55851A Micrel, Inc. CML TERMINATION AND TTL INTERFACE All inputs accept the output from any other member of this family. All outputs are source terminated 100Ω or 50Ω CML differential drivers as shown in Figure 3. All inputs to the SY55851/A must be externally terminated. SY55851/A inputs are designed to accept a termination resistor between the true and complement inputs of a differential pair. 0402 form factor chip resistors will fit with some trace fanout. VCC VCC 50Ω 100Ω 100Ω 50Ω Q 50Ω /Q 50Ω 100Ω 100Ω Q 200Ω /Q 100Ω 16mA 8mA SY55851A SY55851 Figure 3b. Differentially Terminated SY55851A (50Ω Load CML Output) Figure 3a. SY55851 (100Ω Load CML Output) VCC 100Ω VCC 100Ω 100Ω Q 100Ω 50Ω 100Ω /Q VCC 50Ω VCC 1k 8mA TTL Driver VCC VCC ≥ VCC (TTL Driver) 549Ω SY55851 SY55851A 1k S /S 1.47k SY55851 Figure 3c. Differentially Terminated SY55851 (50Ω Load CML Output) M9999-072909 [email protected] or (408) 955-1690 Figure 4. Interfacing TTL-to-CML Select Inputs 5 SuperLite™ SY55851 SY55851A Micrel, Inc. ABSOLUTE MAXIMUM RATINGS(1) Symbol Rating VCC Power Supply Voltage VIN Input Voltage VOUT CML Output Voltage TA Operating Temperature Range TLEAD Lead Temperature (soldering, 20sec.) Tstore Storage Temperature Range θJA Package Thermal Resistance (Junction-to-Ambient) θJC Package Thermal Resistance (Junction-to-Case) Note 1. Value Unit –0.5 to +6.0 V –0.5 to VCC +0.5 V VCC –1.0 to VCC +0.5 V –40 to +85 °C 260 °C –65 to +150 °C 113 96 °C/W °C/W 42 °C/W –Still-Air (multi-layer PCB) –500lfpm (multi-layer PCB) 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. DC ELECTRICAL CHARACTERISTICS TA = –40°C to +85°C(2) Symbol Parameter Min. Typ. Max. Unit Condition VCC Power Supply Voltage 2.3 — 3.6 V ICC Power Supply Current SY55851 SY55851A — — — 46 40 60 mA mA No Load No Load Condition CML DC ELECTRICAL CHARACTERISTICS VCC = 2.3V to 3.6V; GND = 0V; TA = –40°C to +85°C Symbol Parameter Min. Typ. Max. Unit VID Differential Input Voltage 100 — — mV VIH Input HIGH Voltage 1.6 — VCC V VIL Input LOW Voltage 1.5 — VCC – 0.1 V VOH Output HIGH Voltage VCC – 0.040 VCC – 0.010 VCC V No Load VOL Output LOW Voltage VCC – 1.00 VCC – 0.800 VCC – 0.65 V No Load VOUT Output Voltage Swing(3) 0.650 0.800 1.00 V No Load SY55851 — — 0.400 0.200 — — V V 100Ω Load(4) 50Ω Load(5) (SY55851) SY55851A — 0.400 — V 50Ω Load(6) (SY55851A) Output Source Impedance SY55851 SY55851A 80 40 100 50 120 60 Ω Ω ROUT Note 2. Note 3. Note 4. Note 5. Note 6. The DC parameters are guaranteed after thermal equilibrium has been established. Actual voltage levels and differential swing will depend on customer termination scheme. Refer to the “CML Termination” diagram for more details. Applies to SY55851: 200Ω termination resistor across Q and /Q. See Figure 3a. Applies to the SY55851. See Figure 3c. Applies to the SY55851A: 100Ω termination resistor across Q and /Q. See Figure 3b. M9999-072909 [email protected] or (408) 955-1690 6 SuperLite™ SY55851 SY55851A Micrel, Inc. AC ELECTRICAL CHARACTERISTICS(1, 2) VCC = 2.3V to 3.6V; GND = 0V; TA = –40°C to +85°C Symbol Min. Typ. Max. Unit Max. Operating Frequency SY55851 SY55851A 2.5 3.0 — — — — GHz GHz tPD(S-Q) Propagation Delay SY55851 (S to Q) SY55851A — 130 — — 350 280 ps ps tPD (A-Q and B-Q) Propagation Delay (A-Q and B-Q) SY55851 SY55851A — 130 — — 350 280 ps ps tr tf CML Output Rise/Fall Times (20% to 80%) SY55851 SY55851A — — — 65 110 100 ps ps fMAX(3) Note 1. Parameter SY55851: outputs terminated to 50Ω equivalent load. See Figure 3c. SY55851A: outputs terminated to 50Ω load. See Figure 3b Note 2. Specification for packaged product only. Note 3. fMAX represents a maximum toggle rate in which the output still meets CML logic swing. M9999-072909 [email protected] or (408) 955-1690 7 Condition SuperLite™ SY55851 SY55851A Micrel, Inc. 10-PIN MSOP (K10-1) Rev. 00 MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 TEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 WEB USA 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. M9999-072909 [email protected] or (408) 955-1690 8