Precision Edge 2.5V/3.3V/5V 1:5 LVPECL/PECL/ Micrel, Inc. SY100EP14U Precision Edge ECL/HSTL 2GHz CLOCK DRIVER SY100EP14U WITH 2:1 DIFFERENTIAL INPUT MUX FEATURES Guaranteed AC parameters over temp/voltage: ECL Pro > 2GHz f MAX < 25ps within-device skew < 275ps tr/tf time DESCRIPTION < 525ps prop delay 2:1 Differential MUX input The SY100EP14U is a high-speed, 2GHz differential PECL/ECL 1:5 fanout buffer optimized for ultra-low skew Flexible supply voltage: 2.5V/3.3V/5V applications. Within device skew is guaranteed to be less Wide operating temperature range: 40C to +85C than 25ps over temperature and supply voltage. The wide V reference for single-ended or AC-coupled BB supply voltage operation allows this fanout buffer to operate PECL inputs in 2.5V, 3.3V, and 5V systems. A V reference is included BB 100K ECL compatible outputs for single-supply or AC-coupled PECL/ECL input applications, thus eliminating resistor networks. When Inputs accept PECL/LVPECL/ECL/HSTL logic interfacing to a single-ended or AC-coupled PECL/ECL input 75k internal input pull-down resistors signal, connect the V pin to the unused /CLK pin, and BB Available in a 20-Pin TSSOP package bypass the pin to V through a 0.01F capacitor. CC The SY100EP14U features a 2:1 input MUX, making it an ideal solution for redundant clock switchover applications. If only one input pair is used, the other pair may be left floating. In addition, this device includes a synchronous enable pin that forces the outputs into a fixed logic state. Enable or disable state is initiated only after the outputs are in a LOW state, thus eliminating the possibility of a runt clock pulse. The SY100EP14U I/O are fully differential and 100K ECL compatible. Differential 10K ECL logic can interface directly into the SY100EP14U inputs. The SY100EP14U is part of Micrels high-speed clock synchronization family. For applications that require a different I/O combination, consult the Micrel website at www.micrel.com, and choose from a comprehensive product line of high-speed, low-skew fanout buffers, translators, and clock generators. ECL Pro is a trademarks of Micrel, Inc. Precision Edge is a registered trademarks of Micrel, Inc. Rev.: G Amendment: /0 M9999-060910 1 Issue Date: May 2010 hbwhelp micrel.com or (408) 955-1690 Precision Edge Micrel, Inc. SY100EP14U PACKAGE/ORDERING INFORMATION (1) Ordering Information /CLK1 VBB CLK0 VCC /EN VCC CLK1 /CLK0 SEL VEE Package Operating Package 20 19 18 17 16 15 14 13 12 11 Part Number Type Range Marking D 1 0 SY100EP14UK4C K4-20-1 Commercial XEP14U Q (2) SY100EP14UK4CTR K4-20-1 Commercial XEP14U SY100EP14UK4I K4-20-1 Industrial XEP14U (2) SY100EP14UK4ITR K4-20-1 Industrial XEP14U 1 2 3 4 5 6 7 8 9 10 (3) SY100EP14UK4G K4-20-1 Industrial XEP14U with Q0 /Q0 Q1 /Q1 Q2 /Q2 Q3 /Q3 Q4 /Q4 Pb-Free bar line indicator (2, 3) 20-Pin TSSOP SY100EP14UK4GTR K4-20-1 Industrial XEP14U with Pb-Free bar line indicator Notes: 1. Contact factory for die availability. Dice are guaranteed at T = 25C, DC Electricals only. A 2. Tape and Reel. 3. Pb-Free package is recommended for new designs. M9999-060910 2 hbwhelp micrel.com or (408) 955-1690