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Product Detailed Parameters
- Description：ARIES RETIMER GEN5 X16 CXL SMALL
- Series：-
- Mfr：Astera Labs, Inc.
- Package：Tray
- Type：Retimer
- Applications：PCI Express®
- Input：HCSL
- Output：HCSL
- Data Rate (Max)：-
- Number of Channels：-
- Delay Time：-
- Signal Conditioning：Input Equalization
- Voltage - Supply：-
- Current - Supply：-
- Operating Temperature：-10°C ~ 110°C
- Mounting Type：Surface Mount
- Package / Case：354-FBGA, FCCSPBGA
- Supplier Device Package：354-FCCSP (22.8x8.9)
- Capacitance - Input：-
- Grade：-
- Qualification：-
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Overview
The PT5161LXS is a 16-lane PCI Express Gen-5 and Compute Express Link (CXL) protocol-aware low-latency Smart Retimer. It supports data rates of 32 GT/s, 16 GT/s, 8 GT/s, 5 GT/s, and 2.5 GT/s with automatic link equalization. The device extends signal reach by over 36 dB at 32 GT/s using integrated AC-coupling capacitors. It operates within a junction temperature range of -10 °C to 110 °C and utilizes a 354-pin Flip-Chip CSP package measuring 8.9 mm x 22.8 mm.
Feature Summary
- Protocol-non-disruptive architecture enables cache-coherent links without system software requirements
- Flexible link bifurcation supports configurations including 1x16, 2x8, 4x4, and 8x2
- Integrated AC-coupling capacitors reduce solution size and improve signal integrity performance
- Advanced in-band and out-of-band diagnostics facilitate fleet management and large-scale server deployments
Applications
- Server and high-performance PC motherboards
- PCIe riser and add-in cards
- NVMe JBOFs and GPU/deep-learning accelerators
Procurement Notes
Verify the specific orderable part number PT5161LXS against official Astera Labs documentation to confirm current production status and availability. Contact [email protected] for detailed procurement information as indicated in the product brief. Ensure compliance with EU-RoHS and Halogen-Free standards required for the component.
Selection Notes
Select the PT5161LXS when designing systems requiring CXL or PCIe Gen-5 connectivity with low-latency requirements. The device supports flexible link bifurcation and includes integrated AC-coupling capacitors to minimize board space. Verify that the application environment accommodates the specified operating junction temperature range of -10 °C to 110 °C.
Part Context
The PT5161LXS belongs to the Aries Smart Retimer family designed for PCIe Gen-5 and CXL environments. It is pin- and register-compatible with other retimers in the portfolio, enabling easy performance scaling between CXL and PCIe Gen-4 and Gen-5 solutions. The device is manufactured using a flip-chip CSP package optimized for board routing.
Replacement Considerations
The PT5161LRS serves as a compatible alternative within the same family but lacks CXL support. Both devices share identical physical dimensions and pinouts. Select based on whether CXL protocol awareness is required for the specific system topology.
