The SY89467U is a 2.5/3.3V, 1:20 LVPECL fanout buffer with a 2:1 differential input multiplexer (MUX). A unique Fail-Safe Input (FSI) protection prevents metastable output conditions when the selected input clock fails to a DC voltage (when voltage between the pins of the differential input drops significantly below 100mV).The differential input includes Micrel's unique, 3-pin internal termination architecture that can 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 outputs are 800mV, LVPECL with fast rise/fall times guaranteed to be less than 270ps.The SY89467U operates from a 2.5V ±5% or 3.3V ±10% supply and is guaranteed over the full industrial temperature range of -40°C to +85°C. The SY89467U is part of Micrel's high-speed, Precision Edge® product line.
Additional Features
Selects between two inputs, and provides 20 precision LVPECL copies
Fail-Safe Input
Prevents outputs from oscillating when input is invalid
Guaranteed AC performance over temperature and supply voltage:
DC-to >1.5 GHz throughput
<1200ps Propagation Delay (In-to-Q)
270ps Rise/Fall times
Ultra-low jitter design:
<1psRMS random jitter
<1psRMS cycle-to-cycle jitter
<10psPP total jitter (clock)
<0.7psRMS MUX crosstalk induced jitter
Unique, patented MUX input isolation design minimizes adjacent channel crosstalk
Unique patented internal termination and VT pin accepts DC- and AC-coupled inputs (CML, PECL, LVDS)
Wide input voltage range: VCC to GND
2.5V ±5% or 3.3V ±10% supply voltage
-40°C to +85°C industrial temperature range
Available in 64-pin TQFP package
The SY89467U is a 2.5/3.3V, 1:20 LVPECL fanout buffer with a 2:1 differential input multiplexer (MUX). A unique Fail-Safe Input (FSI) protection prevents metastable output conditions when the selected input clock fails to a DC voltage (when voltage between the pins of the differential input drops significantly below 100mV).The differential input includes Micrel's unique, 3-pin internal termination architecture that can 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 outputs are 800mV, LVPECL with fast rise/fall times guaranteed to be less than 270ps.The SY89467U operates from a 2.5V ±5% or 3.3V ±10% supply and is guaranteed over the full industrial temperature range of -40°C to +85°C. The SY89467U is part of Micrel's high-speed, Precision Edge® product line.
Additional Features
- Selects between two inputs, and provides 20 precision LVPECL copies
- Fail-Safe Input
- Prevents outputs from oscillating when input is invalid
- Guaranteed AC performance over temperature and supply voltage:
- DC-to >1.5 GHz throughput
- <1200ps Propagation Delay (In-to-Q)
- 270ps Rise/Fall times
- Ultra-low jitter design:
- <1psRMS cycle-to-cycle jitter
- <10psPP total jitter (clock)
- <0.7psRMS MUX crosstalk induced jitter
- Unique, patented MUX input isolation design minimizes adjacent channel crosstalk
- Unique patented internal termination and VT pin accepts DC- and AC-coupled inputs (CML, PECL, LVDS)
- Wide input voltage range: VCC to GND
- 2.5V ±5% or 3.3V ±10% supply voltage
- -40°C to +85°C industrial temperature range
- Available in 64-pin TQFP package
