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LMK00338 8-Output PCIe Gen1/2/3 Clock Buffer/Level Translator

Availability: 3,470


Package | PIN: WQFN (RTA) | 40
Temp: I (-40 to 85)
Package qty | Carrier: 1,000 | LARGE T&R
Custom reel may be available
Qty Price
1-99 $3.20
100-249 $2.80
250-999 $1.97
1,000+ $1.58


  • 3:1 Input Multiplexer
    • Two Universal Inputs Operate up to 400MHz and Accept LVPECL, LVDS, CML, SSTL, HSTL, HCSL, or Single-Ended Clocks
    • OneCrystal Input Accepts a 10-MHz to 40-MHz Crystal or Single-EndedClock
  • Two Banks With 4 Differential Outputs Each
    • HCSL, or Hi-Z(Selectable per Bank)
    • Additive RMS Phase Jitter for PCIe Gen3 at 100MHz:
      • 30 fs RMS (Typical)
  • –72 dBc at 156.25 MHz
  • LVCMOS Output With Synchronous Enable Input
  • Pin-Controlled Configuration
  • VCC Core Supply: 3.3 V ± 5%
  • 3 Independent VCCO Output Supplies: 3.3 V/2.5 V ± 5%
  • Industrial Temperature Range: –40°C to +85°C
  • 40-lead WQFN (6 mm × 6 mm)

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Texas Instruments  LMK00338RTAR

The LMK00338 device is an 8-output PCIe Gen1/Gen2/Gen3 fanout buffer intended forhigh-frequency, low-jitter clock, data distribution, and level translation. The input clock can beselected from two universal inputs or one crystal input. The selected input clock is distributed totwo banks of 4 HCSL outputs and one LVCMOS output. The LVCMOS output has a synchronous enable inputfor runt-pulse-free operation when enabled or disabled. The LMK00338 operates from a 3.3-V coresupply and 3 independent 3.3-V or 2.5-V output supplies.

The LMK00338 provides high performance, versatility, and power efficiency, making itideal for replacing fixed-output buffer devices while increasing timing margin in thesystem.