FEATURES
DESCRIPTION
Micrels SY89426 Multi-Output Phase Locked Loop (PLL) is a SONET compliant clock generator providing 622.08MHz, 155.52MHz and retimed reference clock outputs. The PLL produces low jitter OC-12/STS-12 and OC-3/STS-3 rate clocks from an input reference clock of 38.88, 51.84, or 77.76MHz. Additionally, the input reference clock is retimed and provided as a TTL/CMOS compatible output, which may be disabled to minimize switching noise. The SY89426 operates from a single +5 volt supply, and requires only a simple series RC loop filter.
FEATURES
■ Single chip source for 622.08MHz and 155.52MHz clocks
■ 622.08MHz output is differential PECL, 155.52MHz output is single-ended PECL
■ TTL/CMOS compatible inputs and reference output
■ SONET compliant jitter performance (≤0.01UI)
■ Choice of three reference frequencies
■ Only 395mW (typ)
■ Complies with Bellcore, CCITT and ANSI standards
■ Single +5 volt power supply
■ Fully compatible with industry standard 10KH I/O levels
■ Available in 28-pin PLCC package
Microchip Technology Inc. is a leading provider of microcontroller and analog semiconductors, providing low-risk product development, lower total system cost and faster time to market for thousands of diverse customer applications worldwide. Headquartered in Chandler, Arizona, Microchip offers outstanding technical support along with dependable delivery and quality.