CY2DP1504: 1:4 LVPECL Fanout Buffer with Selectable Clock Input

1:4 LVPECL Fanout Buffer with Selectable Clock Input

Features

• Select one of two differential (LVPECL, LVDS, HCSL, or CML) input pairs to distribute to four LVPECL output pairs
• Translates any single-ended input signal to 3.3 V LVPECL levels with resistor bias on INx# input
• 30 ps maximum output-to-output skew
• 480-ps maximum propagation delay
• 0.15-ps maximum additive RMS phase jitter at 156.25 MHz (12-kHz to 20-MHz offset)
• Up to 1.5-GHz operation
• Synchronous clock enable function
• 20-pin TSSOP
• 2.5-V or 3.3-V operating voltage
• Commercial and industrial operating temperature range

Functional Description

The CY2DP1504 is an ultra-low noise, low-skew, low-propagation delay, 1:4 LVPECL fanout buffer targeted to meet the requirements of high-speed clock distribution applications. The CY2DP1504 can select between separate differential (LVPECL, LVDS, HCSL, or CML) input clock pairs using the IN_SEL pin. The synchronous clock enable function ensures glitch-free output transitions during enable and disable periods. The device has a fully differential internal architecture that is optimized to achieve low additive jitter and low skew at operating frequencies of up to 1.5 GHz.