Key Features

• Designed for SAS, SAS-2, and SATA systems
• Center (±0.33%) Spread Spectrum Clocking (SSC)
• Down (-0.30% or -0.60%) SSC
• Better frequency stability than SAW oscillators
• One differential 3.3V LVPECL output
• Crystal oscillator interface designed for 25MHz (CL = 18pF) frequency
• External fundamental crystal frequency ensures high reliability and low aging
• Output frequency is tunable with external capacitors
• RMS phase jitter: 1.33ps (typical)
• 3.3V operating supply
• 0°C to 70°C ambient operating temperature
• Industrial temperature available upon request
• Available in lead-free (RoHS 6) package
• 843441-150 Functional replacement part use 8T49N242i

Pin Assignments and Package Information

The 843441AM-100LF is available in an 8-Lead SOIC package, with pin assignments as follows:

• Pin 1: XTAL_OUT (Input Pullup)
• Pin 2: XTAL_IN (Input Pullup)
• Pin 3: SSC_SEL0 (Input Pulldown)
• Pin 4: SSC_SEL1 (Input Pulldown)
• Pin 5: VCC (Power)
• Pin 6: Q (Output)
• Pin 7: nQ (Output)
• Pin 8: VEE (Power)

Electrical Characteristics

• Supply Voltage, VCC: 3.135V - 3.465V
• Power Supply Current: 66 mA
• Input High Voltage (LVCMOS): 2VDD + 0.3V
• Input Low Voltage (LVCMOS): -0.3V to 0.8V
• Output High Voltage (LVPECL): VCC – 1.4V
• Output Low Voltage (LVPECL): VCC – 2.0V
• Peak-to-Peak Output Voltage Swing: 0.6V - 0.9V

AC Electrical Characteristics

• Output Frequency: 100 MHz (F_SEL(1:0) = 01)
• RMS Phase Jitter (Random): 1.39 ps (Integration Range: 12kHz – 20MHz)
• Period Jitter, RMS: 4.05 ps (SSC Off)
• Cycle-to-Cycle Jitter: 31 ps (SSC Off)
• Output Rise/Fall Time: 200 ps - 700 ps
• Output Duty Cycle: 45% - 55%

Applications Information

The 843441AM-100LF is recommended for use in applications where precise frequency selection, improved signal quality, and reduced noise are essential for high-performance electronic systems.