SY89834U

Micrel, Inc. 2.5V/3.3V TWO INPUT, 1GHz LVTTL/CMOSTO-LVPECL 1:4 FANOUT BUFFER/ Precision Edge® Precision ESYd8g9e83®4U TRANSLATOR WITH 2:1 INPUT MUX SY89834U FEATURES s Selects between two LVTTL/CMOS inputs and provides 4 LVPECL output copies s Guaranteed AC performance over temperature and voltage: DC-to >1.0GHz throughput <500ps propagation delay (IN-to-Q) < 20ps within-device skew < 225ps rise/fall time s Ultra-low jitter design: < 1psRMS cycle-to-cycle jitter < 1psRMS random jitter < 10psPP deterministic jitter < 10psPP total jitter (clock) s Low voltage 2.5V and 3.3V supply operation s 100K LVPECL outputs s Industrial temperature range: –40°C to +85°C s Includes a 2:1 MUX select input s Accepts single-ended TTL/CMOS inputs and provides four LVPECL outputs s Available in 16-pin (3mm × 3mm) MLF™ package Precision Edge® DESCRIPTION The SY89834U is a high-speed, 1GHz LVTTL/CMOS-toLVPECL fanout buffer/translator optimized for high-speed ultra-low skew applications. The input stage is designed to accept two single-ended LVTTL/CMOS compatible signals that feed into a 2:1 MUX. The selected input is translated and distributed as four differential 100K LVPECL outputs. Within device skew is guaranteed to be less than 20ps over supply voltage and temperature. The single-ended input buffers accept TTL/CMOS logic levels. The internal threshold of the buffers is defined as VCC/2. The SY89834U is a part of Micrel's high-speed Precision Edge® family. For applications...