Precision Edge ULTRA-PRECISION Micrel, Inc. SY58018U Precision Edge DIFFERENTIAL LVPECL 2:1 MUX SY58018U with INTERNAL TERMINATION FEATURES Guaranteed AC performance over temperature and voltage: Precision Edge DC to 5Gbps data throughput DC to > 4GHz f (clock) MAX DESCRIPTION < 260ps propagation delay < 110ps t / t times r f The SY58018U is a 2.5V/3.3V precision, high-speed, 2:1 Ultra-low crosstalk-induced jitter: 0.7ps RMS differential MUX capable of handling clocks up to 4GHz Ultra-low jitter design: and data up to 5Gbps. < 1ps random jitter RMS The differential input includes Micrels unique, 3-pin input < 10ps deterministic jitter PP termination architecture that allows customers to interface < 10ps total jitter (clock) PP to any differential signal (AC- or DC-coupled) as small as Unique input termination and V pin accepts DC- T 100mV without any level shifting or termination resistor and AC-coupled inputs (CML, PECL, LVDS) networks in the signal path. The outputs are 800mV, 100k 800mV (100k) LVPECL output swing compatible, LVPECL, with extremely fast rise/fall times guaranteed to be less than 110ps. Power supply 2.5V 5% or 3.3V 10% The SY58018U operates from a 2.5V 5% supply or a 40C to +85C temperature range 3.3V 10% supply and is guaranteed over the full industrial Available in 16-pin (3mm x 3mm) QFN package temperature range of 40C to +85C. For applications that require CML outputs, consider the SY58017U or for 400mV LVPECL outputs the SY58019U. The SY58018U is part of APPLICATIONS Micrels high-speed, Precision Edge product line. All support documentation can be found on Micrels web Redundant clock distribution site at www.micrel.com. SONET/SDH clock/data distribution Loopback Fibre Channel distribution FUNCTIONAL BLOCK DIAGRAM TYPICAL PERFORMANCE IN0 5Gbps Output 50 V 0 T0 50 /IN0 Q0 MUX /Q0 IN1 50 S V 1 T1 50 /IN1 SEL (TTL/CMOS) TIME (25ps/div.) 23 (2 1PRBS) Precision Edge and AnyGate are registered trademarks of Micrel, Inc. Rev.: D Amendment: /0 M9999-082707 1 Issue Date: August 2007 hbwhelp micrel.com or (408) 955-1690 Output Swing (200mV/div.) Precision Edge Micrel, Inc. SY58018U PACKAGE/ORDERING INFORMATION (1) Ordering Information Package Operating Package Lead Part Number Type Range Marking Finish 16 15 14 13 SY58018UMG QFN-16 Industrial 018U with Pb-Free IN0 1 12 Q Pb-Free bar-line indicator NiPdAu /IN0 2 11 GND (2) SY58018UMGTR QFN-16 Industrial 018U with Pb-Free GND IN1 3 10 Pb-Free bar-line indicator NiPdAu 4 /IN1 9 /Q Notes: 5 6 7 8 1. Contact factory for die availability. Dice are guaranteed at T = 25C, DC electricals only. A 2. Tape and Reel. 16-Pin QFN PIN DESCRIPTION Pin Number Pin Name Pin Function 1, 2 IN0, /IN0 Differential Input: These input pairs are the differential signal inputs to the device. They 3, 4 IN1, /IN1 accept differential AC- or DC-coupled signals as small as 100mV. Each pin of a pair internally terminates to a V pin through 50. Note that these inputs will default to an indeterminate T state if left open. Please refer to the Input Interface Applications section for more details. 16, 5 VT0, VT1 Input Termination Center-Tap: Each side of the differential input pair terminates to a V T pin. The V and V pins provide a center-tap to a termination network for maximum T0 T1 interface flexibility. See Input Interface Applications section for more details. 6 SEL This single-ended TTL/CMOS compatible input selects the inputs to the multiplexer. Note that this input is internally connected to a 25k pull-up resistor and will default to a logic HIGH state if left open. 7 NC No connect. 8, 13 VCC Positive Power Supply: Bypass with 0.1F 0.01F low ESR capacitors. 0.01F capacitor should be as close to V pin as possible. CC 12, 9 Q, /Q Differential Outputs: This 100k compatible LVPECL output pair is the output of the device. Normally terminate with 50 to V 2V. See Output Interface Applications section. It is CC a logic function of the IN0, IN1, and SEL inputs. Please refer to the Truth Table for details. 10, 11, 14, 15 GND, Ground. Ground pins and exposed pad must be connected to the same ground plane. Exposed Pad TRUTH TABLE SEL Output 0 CH0 Input Selected 1 CH1 Input Selected M9999-082707 2 hbwhelp micrel.com or (408) 955-1690 VT1 VT0 SEL GND NC GND VCC VCC