SY89221U Series

Catalog

2.5V/3.3V INTEGRATED DIVIDER + FANOUT WITH 15 LVPECL OUTPUTS ASN FSI INPUTS 64 TQFP 10X10X1.0MM T/R ROHS COMPLIANT: YES

Part	Ratio - Input:Output [custom]	Type	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Mounting Type	Frequency - Max [Max]	Output	Differential - Input:Output [custom]	Differential - Input:Output [custom]	Input	Number of Circuits	Voltage - Supply [Max]	Voltage - Supply [Min]	Package / Case
Microchip Technology SY89221UHY-TR	2:15	Divider, Fanout Buffer (Distribution), Multiplexer	64-TQFP-EP (10x10)	85 °C	-40 °C	Surface Mount	2 GHz	LVPECL			CML, LVDS, PECL	1	3.6 V	2.375 V	64-TQFP Exposed Pad
Microchip Technology SY89221UHY	2:15	Divider, Fanout Buffer (Distribution), Multiplexer	64-TQFP-EP (10x10)	85 °C	-40 °C	Surface Mount	2 GHz	LVPECL			CML, LVDS, PECL	1	3.6 V	2.375 V	64-TQFP Exposed Pad

Catalog

Key Features

• + Four low-skew LVPECL 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

• + <270ps rise/fall time

• + <35ps within-bank skew

• + Fail Safe Input

• + 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)

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

• + 2.5V ±5% or 3.3V ±10% power supply

• + -40°C to +85°C temperature range

• + Available in 64-pin TQFP

Description

The SY89221U is a 2.5/3.3V precision, high-speed, integrated clock divider and LVPECL fanout buffer capable of handling clocks up to 1.5GHz. Optimized for communications applications, the four independently controlled output banks are phasematched 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 LVPECL compatible with extremely fast rise/fall times that are guaranteed to be less than 220ps.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 SY89221U is part of Micrel's Precision Edge® product family.