Texas Instruments LMK00334/38/Q1 Clock Buffer/Level Translators
Texas Instruments LMK00334/38/Q1 Clock Buffer/Level Translator is intended for high-frequency, low-jitter clock/data distribution and level translation. The input clock can be selected from two universal inputs or one crystal input. The selected input clock is distributed to two banks of 2 HCSL (4 HCSL LMK00338) outputs and one LVCMOS output. The LVCMOS output has a synchronous enable input for runt-pulse-free operation when enabled or disabled. The LMK00334/38 operates from a 3.3 V core supply and 3 independent 3.3 V/2.5 V output supplies. The LMK00334/38/Q1 provides high performance, versatility, and power efficiency, making it ideal for replacing fixed-output buffer devices while increasing timing margin in the system. The LMK00334/38-Q1 devices are AEC-Q100 qualified for automotive applications.Features
- 3:1 Input Multiplexer
- Two Universal Inputs Operate up to 400MHz and Accept LVPECL, LVDS, CML, SSTL, HSTL, HCSL, or Single-Ended Clocks
- One Crystal Input Accepts a 10 to 40MHz Crystal or Single-Ended Clock
- Two Banks with 2 Differential Outputs Each
- HCSL, or Hi-Z (Selectable)
- Additive RMS Phase Jitter for PCIe Gen3 at 100MHz: 30 fs RMS (typical)
- High PSRR: -72dBc at 156.25 MHz
- LVCMOS Output with Synchronous Enable Input
- Pin-Controlled Configuration
- VCC Core Supply: 3.3V ± 5%
- 3 Independent VCCO Output Supplies: 3.3V/2.5V ± 5%
- Industrial Temperature Range: -40°C to +85°C
- 32-lead WQFN - 5mm x 5mm (LMK00334)
- 40-lead WQFN - 6mm x 6mm (LMK00338)
Applications
- Clock Distribution and Level Translation for ADCs, DACs, Multi-Gigabit Ethernet, XAUI, Fibre Channel, SATA/SAS, SONET/SDH, CPRI, High-Frequency Backplanes
- Switches, Routers, Line Cards, Timing Cards
- Servers, Computing, PCI Express (PCIe 3.0)
- Remote Radio Units and Baseband Unit
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Published: 2014-02-21
| Updated: 2024-06-25
