2019 Microchip Technology Inc. DS20006227A-page 1
SY58607U
Features
• Precision 1:2, 800 mV LVPECL Fanout Buffer
• Guaranteed AC Performance over Temperature
and Voltage:
- DC-to >3.2 Gbps Throughput
- <350 ps Propagation Delay (IN-to-Q)
- <20 ps Within-Device Skew
- <110 ps Rise/Fall Times
• Fail Safe Input
- Prevents Outputs From Oscillating When
Input is Invalid
• Ultra-Low Jitter Design
- 41 fs Additive Phase Jitter
• High-Speed LVPECL Outputs
• 2.5V ±5% or 3.3V ±10% Power Supply Operation
• Industrial Temperature Range: –40°C to +85°C
• Available in 16-lead (3 mm x 3 mm) QFN
Package
Applications
• All SONET Clock and Data Distribution
• Fibre Channel Clock and Data Distribution
• Gigabit Ethernet Clock And Data Distribution
• Backplane Distribution
Markets
• Storage
• ATE
• Test and Measurement
• Enterprise Networking Equipment
• High-End Servers
• Access
• Metro Area Network Equipment
General Description
The SY58607U is a 2.5V/3.3V, high-speed, fully
differential 1:2 LVPECL fanout buffer optimized to
provide two identical output copies with less than 20 ps
of skew. The SY58607U can process clock signals as
fast as 2.5 GHz or data patterns up to 3.2 Gbps.
The differential input includes Microchip’s unique,
3-lead input termination architecture that interfaces to
LVPECL, LVDS, or CML differential signals, (AC- or
DC-coupled) as small as 100 mV (200 mVPP) without
any level-shifting or termination resistor networks in the
signal path. For AC-coupled input interface
applications, an integrated voltage reference
(VREF-AC) is provided to bias the VT pin. The outputs
are 800 mV LVPECL, with extremely fast rise/fall times
guaranteed to be less than 110 ps.
The SY58607U operates from a 2.5V ±5% supply or
3.3V ±10% supply and is guaranteed over the full
industrial temperature range (–40°C to +85°C). For
applications that require CML or LVDS outputs,
consider Microchip’s SY58606U and SY58608U, 1:2
fanout buffers with 400 mV and 325 mV output swings
respectively. The SY58607U is part of Microchip’s
high-speed, Precision Edge® product line.
Package Type
SY58607U
3 mm x 3 mm QFN-16 (M)
(Top View)
13141516
12
11
10
9
1
2
3
4
8765
IN
VT
VREF-AC
/IN
Q0
/Q0
Q1
/Q1
VCC
GND
GND
VCC
VCC
GND
GND
VCC
3.2 Gbps Precision, 1:2 LVPECL Fanout Buffer
with Internal Termination and Fail Safe Input
