Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package / Case | Tape & Reel (TR),Cut Tape (CT),Bulk |
| Part Status | Active |
| PLL | No |
| Main Purpose | PCI Express (PCIe), SATA CPU |
| Input | CML, HCSL, HSTL, LVDS, LVPECL, SSTL, Crystal |
| Output | HCSL, LVCMOS |
| Number of Circuits | 1 |
| Ratio - Input: Output | 3:9 |
| Differential - Input: Output | Yes/Yes |
| Frequency - Max | 400MHz |
| Voltage - Supply | 3.15V ~ 3.45V |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
Tổng quan
Description
The LMK00338RTAR is a high-performance 3.8 GHz clock buffer from Texas Instruments, designed for precision timing applications. It features 8 differential outputs (LVPECL, LVDS, or HCSL configurable) with ultra-low additive jitter (<100 fs RMS).
Key features:
- Inputs: Accepts LVPECL, LVDS, HCSL, or single-ended clocks.
- Outputs: Configurable as 8x LVPECL, LVDS, or 4x HCSL pairs.
- Low jitter: <100 fs RMS (12 kHz–20 MHz).
- Supply voltage: 3.3 V ±10%.
- Applications: Telecom, networking, data centers, and test equipment.
The device ensures signal integrity with minimal skew and high noise immunity, making it ideal for high-speed systems. Its small 40-pin WQFN package (RTAR) suits space-constrained designs.
For detailed specs, refer to the [TI datasheet](https://www.ti.com/lit/ds/symlink/lmk00338.pdf).
Key features:
- Inputs: Accepts LVPECL, LVDS, HCSL, or single-ended clocks.
- Outputs: Configurable as 8x LVPECL, LVDS, or 4x HCSL pairs.
- Low jitter: <100 fs RMS (12 kHz–20 MHz).
- Supply voltage: 3.3 V ±10%.
- Applications: Telecom, networking, data centers, and test equipment.
The device ensures signal integrity with minimal skew and high noise immunity, making it ideal for high-speed systems. Its small 40-pin WQFN package (RTAR) suits space-constrained designs.
For detailed specs, refer to the [TI datasheet](https://www.ti.com/lit/ds/symlink/lmk00338.pdf).
Equivalent
Equivalent products to the LMK00338RTAR (a 3.3V LVCMOS fanout buffer from Texas Instruments) include:
- ON Semiconductor NB3L553 (3.3V fanout buffer)
- Renesas 5PB11xx (similar LVCMOS fanout buffers)
- IDT 853Sxxx (low-skew clock buffers)
- Microchip SY89833L (high-speed LVCMOS buffer)
Check datasheets for exact pinout and specs.
- ON Semiconductor NB3L553 (3.3V fanout buffer)
- Renesas 5PB11xx (similar LVCMOS fanout buffers)
- IDT 853Sxxx (low-skew clock buffers)
- Microchip SY89833L (high-speed LVCMOS buffer)
Check datasheets for exact pinout and specs.
Pinout
The LMK00338RTAR is a 40-pin (QFN package) clock buffer/fanout device. Key functions:
- Inputs: 2 differential or 4 single-ended clock inputs.
- Outputs: 8 low-noise, low-skew differential outputs (configurable as LVPECL, LVDS, or HCSL).
- Features:
- Supports frequencies up to 3.3 GHz.
- Integrated termination resistors.
- Low additive jitter (<100 fs RMS).
- Control: Pin/SPI-selectable output formats and enable/disable.
Ideal for high-speed clock distribution in networking, telecom, and FPGA systems.
- Inputs: 2 differential or 4 single-ended clock inputs.
- Outputs: 8 low-noise, low-skew differential outputs (configurable as LVPECL, LVDS, or HCSL).
- Features:
- Supports frequencies up to 3.3 GHz.
- Integrated termination resistors.
- Low additive jitter (<100 fs RMS).
- Control: Pin/SPI-selectable output formats and enable/disable.
Ideal for high-speed clock distribution in networking, telecom, and FPGA systems.
