General Description

The 843021I-01 is a Gigabit Ethernet Clock Generator. The

843021I-01 uses a 25MHz crystal to synthesize 125MHz. The

843021I-01 has excellent phase jitter performance, over the

1.875MHz – 20MHz integration range. The 843021I-01 is packaged

in a small 8-pin TSSOP, making it ideal for use in systems with

limited board space

Features

• One differential 3.3V or 2.5V LVPECL output

• Crystal oscillator interface designed for 25MHz,

18pF parallel resonant crystal

• Output frequency range: 125MHz, using a 25MHz crystal

• VCO range: 490MHz – 640MHz

• RMS phase jitter @ 125MHz, using a 25MHz crystal

(1.875MHz – 20MHz): 0.41ps (typical)

• Full 3.3V or 2.5V operating supply

• -40°C to 85°C ambient operating temperature

• Available in lead-free (RoHS 6) package