SY89218 Series

Catalog

IC CLK BUFFER 1:15 2GHZ 64TQFP

Part	Operating Temperature [Max]	Operating Temperature [Min]	Differential - Input:Output [custom]	Differential - Input:Output [custom]	Voltage - Supply [Min]	Voltage - Supply [Max]	Mounting Type	Type	Ratio - Input:Output	Supplier Device Package	Output	Frequency - Max [Max]	Input	Package / Case	Number of Circuits	Ratio - Input:Output [custom]
Microchip Technology SY89218UHY-TR	85 °C	-40 °C			2.375 V	2.625 V	Surface Mount	Divider, Fanout Buffer (Distribution)	1:15	64-TQFP-EP (10x10)	LVDS	2 GHz	CML, LVDS, PECL	64-TQFP Exposed Pad	1
Microchip Technology SY89218UHY	85 °C	-40 °C			2.375 V	2.625 V	Surface Mount	Divider, Fanout Buffer (Distribution), Multiplexer		64-TQFP-EP (10x10)	LVDS	2 GHz	CML, LVDS, PECL	64-TQFP Exposed Pad	1	2:15

Catalog

Key Features

• + Low-skew LVDS output banks with independently programmable ÷1, ÷2 and ÷4 divider options

• + Four output banks, 15 total outputs

• + Accepts a clock frequency up to 1.5GHz

• + <1600ps IN-to-OUT propagation delay

• + <200ps rise/fall time

• + <35ps within bank skew

• + Prevents outputs from oscillating

• + <1psRMS random jitter

• + <10psPP total jitter (clock)

• + Patent-pending input termination and VT pin accepts DC- and AC-coupled inputs (CML, PECL, LVDS)

• + LVDS-compatible outputs

• + CMOS/TTL-compatible output enable (EN) and divider select control

• + 2.5V ±5% power supply

• + -40°C to +85°C temperature range

• + Available in 64-pin TQFP

Description

The SY89218U is a 2.5V precision, high-speed, integrated clock divider and LVDS fanout buffer capable of handling clocks up to 1.5GHz. Optimized for communications applications, the four independently controlled output banks are phase-matched and can be configured for pass through (÷1), ÷2 or ÷4 divider ratios.The differential input includes Micrel's unique, 3-pin input termination architecture that allows the user to interface to any differential signal (AC- or DC-coupled) as small as 100mV (200mVPP) without any level shifting or termination resistor networks in the signal path. The low-skew, low-jitter outputs are LVDS compatible with extremely fast rise/fall times guaranteed to be less than 200ps.The /MR (master reset) input asynchronously resets the outputs. A four-clock delay after de-asserting /MR allows the counters to synchronize and start the outputs from the same state without any runt pulse.The SY89218U is part of Micrel's Precision Edge® product family.