The SM844256 provides a low-noise timing solution for high speed, high accuracy synthesis of clock signals. Common applications include SONET, Gigabit Ethernet, 10 Gigabit Ethernet, and similar networking standards.Power supplies of either 3.3V or 2.5V are supported, with superior jitter and phase noise performance. The device synthesizes different low noise LVDS output frequencies such as 125MHz, 156.25MHz, 312.5MHz, and 625MHz for Ethernet applications; 77.76MHz, 155.52MHz, 311.04MHz, and 622.08MHz for SONET applications. The crystal reference frequencies used include 25MHz and 19.44Mhz for Ethernet and SONET applications, respectively.The SM844256 is an excellent replacement for IDT Femto-clocks, with improved accuracy, power consumption, waveform integrity, and jitter.
Additional Features
Generates six LVPECL outputs
2.5V or 3.3V operating range
Typical phase jitter @ 125MHz
(1.875MHz to 20MHz): 80 fs (typical) @ 3.3V
75MHz to 625MHz output frequencies
Industrial temperature range
Green, RoHS, and PFOS compliant
Available in 24-pin TSSOP EPAD
Operating supply modes:
Core/Output
3.3V/3.3V, 3.3V/2.5
The SM844256 provides a low-noise timing solution for high speed, high accuracy synthesis of clock signals. Common applications include SONET, Gigabit Ethernet, 10 Gigabit Ethernet, and similar networking standards.Power supplies of either 3.3V or 2.5V are supported, with superior jitter and phase noise performance. The device synthesizes different low noise LVDS output frequencies such as 125MHz, 156.25MHz, 312.5MHz, and 625MHz for Ethernet applications; 77.76MHz, 155.52MHz, 311.04MHz, and 622.08MHz for SONET applications. The crystal reference frequencies used include 25MHz and 19.44Mhz for Ethernet and SONET applications, respectively.The SM844256 is an excellent replacement for IDT Femto-clocks, with improved accuracy, power consumption, waveform integrity, and jitter.
Additional Features
- Generates six LVPECL outputs
- 2.5V or 3.3V operating range
- Typical phase jitter @ 125MHz
- (1.875MHz to 20MHz): 80 fs (typical) @ 3.3V
- 75MHz to 625MHz output frequencies
- Industrial temperature range
- Green, RoHS, and PFOS compliant
- Available in 24-pin TSSOP EPAD
- Operating supply modes:
- Core/Output
- 3.3V/3.3V, 3.3V/2.5
