Mfr Part #:

LMK00338RTAR

The Texas Instruments LMK00338RTAR is an 8-output PCIe clock buffer and level translator. It operates at frequencies up to 400 MHz and features HCSL and LVCMOS outputs.

✓ Total Stock: 18,363 pcs

$ Price Range: $1.87

LMK00338RTAR Available from 3 distributors

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Romaks Technologies ✓ Non-Authorised Inventory information	16,436 pcs On Request	16436 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Xingangxin ✓ Non-Authorised Inventory information	1,101 pcs On Request	1101 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Smaxon Electronics ✓ Non-Authorised Inventory information	826 pcs On Request	826 pcs	On Request	1	On Request	On Request	15+	On Request	On Request

LMK00338RTAR Description

Short technical summary and product information.

The LMK00338RTAR from Texas Instruments is an 8-output PCIe Gen1 to Gen7 clock buffer and level translator designed for high-frequency, low-jitter clock distribution. It supports a 3:1 input multiplexer with two universal inputs and one crystal input, operating up to 400 MHz.

The device distributes the selected input clock to two banks of 4 HCSL outputs and one LVCMOS output. The LVCMOS output includes a synchronous enable input for runt-pulse-free operation. It operates from a 3.3-V core supply and independent 3.3-V or 2.5-V output supplies.

Key electrical characteristics include an additive RMS phase jitter of 15 fs for PCIe Gen5 at 100 MHz and phase jitter of -72 dBc at 156.25 MHz. The operating temperature range is -40°C to 85°C.

The LMK00338RTAR is available in a 40-lead WQFN (6x6 mm) package and is designed for surface mount applications. Its primary purpose is for PCIe and SATA CPU clocking.

LMK00338RTAR Quick Information

Product Type: Clock Buffer

Canonical Name: LMK00338 8-Output PCIe Clock Buffer and Level Translator

Subcategory: Application Specific ClockTiming

LMK00338RTAR Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

LMK00338RTAR Estimated Pricing

Qty	Low	High
1+	$1.87	$1.87

Estimated market price range - modelled values for guidance only, not live distributor offers.

LMK00338RTAR Features

8-output PCIe clock buffer and translator.
Operates up to 400 MHz frequency.
Features HCSL and LVCMOS outputs.
Low additive RMS phase jitter.
Industrial temperature range: -40°C to 85°C.

LMK00338RTAR Applications

Ideal for PCIe clock distribution.
Suitable for SATA CPU clocking.
Used in high-frequency timing systems.
Level translation for clock signals.

LMK00338RTAR FAQs

5 frequently asked questions generated from this part’s specifications.

What is the operating temperature range for the LMK00338RTAR?

The operating temperature range is -40°C to 85°C.

What package type is the LMK00338RTAR available in?

The LMK00338RTAR is available in a 40-lead WQFN (6x6 mm) package.

What are the output types for the LMK00338RTAR?

The LMK00338RTAR features HCSL and LVCMOS outputs.

What is the maximum frequency supported by the LMK00338RTAR?

The LMK00338RTAR supports frequencies up to 400 MHz.

What is the core supply voltage for this clock buffer?

The core supply voltage is 3.3 V ± 5%.

Category	Application Specific ClockTiming
Manufacturer Name	Texas Instruments
Differential	Yes/Yes
Frequency	400 MHz
Input	CML, HCSL, HSTL, LVDS, LVPECL, SSTL, Crystal
Input Type	CML, HCSL, HSTL, LVDS, LVPECL, SSTL, Crystal
Main Purpose	PCI Express (PCIe), SATA CPU
Mounting Type	Surface Mount
Number of Circuits	1
Operating Temperature	-40°C to 85°C
Output	HCSL, LVCMOS
PLL	No
Phase Jitter	-72 dBc
Ratio	3:1
Supplier Device Package	40-WQFN (6x6)
Voltage	3.3 V ± 5%