My Inquiry
My Account
Texas Instruments DS250DF230ZLST
- Part No.:
- DS250DF230ZLST
- Manufacturer:
- Texas Instruments
- Category:
- Specialized
- Package:
- 36-LFBGA
- Datasheet:
-
DS250DF230ZLST.pdf
- Description:
- IC INTFACE SPECIALIZED 36NFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:542
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DS250DF230ZLST from Texas Instruments is a dual-channel 25-Gbps multi-rate retimer IC with integrated CTLE, adaptive DFE, and 3-tap FIR transmit equalization. It locks independently across 19.6–25.8 Gbps (including 12.16512 Gbps, 9.8304 Gbps), delivers <500 ps typical latency at 25.78125 Gbps, supports 35-dB channel loss at 12.9 GHz, and provides recovered clock output on Channel 0 for system synchronization in high-speed optical interconnects.
For engineers reviewing the DS250DF230ZLST datasheet, DS250DF230ZLST pinout, DS250DF230ZLST application, or DS250DF230ZLST equivalent, key selection criteria include sub-rate support (÷2/÷4), ultra-low jitter performance (0.16 UIpp TJ @ 1E-12), integrated 2×2 cross-point switching, SMBus programmability, and thermal operation up to 85°C ambient in the 5×5 mm NFBGA package.
Technical Context
The DS250DF230ZLST implements independent CDR per channel with Fast Lock Mode (<2 ms lock time at 25.78125 Gbps) and full adaptation (CTLE + 5-tap DFE) completing in <3 s. Its signal conditioning architecture combines adaptive continuous-time linear equalization with decision feedback equalization to compensate for temperature-dependent channel loss variation.
It integrates a low-jitter transmitter with configurable 3-tap FIR filtering, on-chip eye-opening monitor (EOM), PRBS generator/checker, and 2×2 cross-point for lane routing flexibility. The device operates from a single 2.5 V supply, requires no external low-jitter reference clock, and supports both SMBus slave and master modes via strap-configurable pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate Range | 19.6–25.8 Gbps full-rate; supports ÷2 (9.8–12.9 Gbps) and ÷4 (4.9–6.45 Gbps) sub-rates for 100GbE, InfiniBand EDR, CEI-25G interfaces |
| Latency | <500 ps typical at 25.78125 Gbps - enables real-time re-timing in latency-sensitive optical front-ports and active cables |
| Jitter Performance | 0.16 UIpp total jitter (TJ) @ 1E-12 probability - meets stringent OIF-CEI-25G-LR/SR mask requirements |
| Equalization Capability | 35-dB channel loss compensation at 12.9 GHz - extends reach over lossy backplanes and mid-planes |
| Power Consumption | 347 mW per active channel (CTLE + Tx FIR + full DFE + crosspoint) - enables dense 2-channel deployment without forced cooling |
| Supply & Interface | Single 2.5 V ±5% supply; SMBus 2.5/3.3-V interface with 4-level address strapping - simplifies power delivery and multi-device configuration |
| Thermal Range | –40°C to +85°C ambient; junction up to +110°C - suitable for industrial and telecom equipment with passive heatsinking |
Pinout & Package
DS250DF230ZLST uses a 36-pin NFBGA (ZLS) package, 5.00 mm × 5.00 mm body size, with exposed die attach pad not present (NFBGA variant). Pin functions are validated per TI SNLS590C Rev C datasheet Figure 6-1 and Table 6-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RX0P / RX0N RX1P / RX1N |
Differential AC-coupled inputs | On-chip 100-Ω termination; accept 145 mVppd min signal detect threshold; support 1200 mVppd max differential input swing |
| TX0P / TX0N TX1P / TX1N |
Differential AC-coupled outputs | 50-Ω drivers; 392–1195 mVppd programmable output amplitude; 17.5 ps typical transition time at 25.78125 Gbps |
| VDD / GND | Power and ground | Four dedicated VDD pins (2.5 V ±5%); multiple GND pins distributed for low-inductance return paths and noise suppression |
| SDA / SDC / ADDR0 / ADDR1 / EN_SMB / THR | SMBus configuration interface | 4-level strap pins enable 16 unique addresses; SMBus I/O is 3.3-V tolerant; pull-up resistors required externally per SMBus spec |
| TEST0/RCK0 / INT_N / ALL_DONE_N / READ_EN_N | Status, control & interrupt | TEST0/RCK0 configurable as recovered clock output for CH0; INT_N is open-drain active-low interrupt; ALL_DONE_N signals EEPROM load completion |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent CDR channels | Each channel locks autonomously across 19.6–25.8 Gbps - eliminates inter-channel dependency in asymmetric link topologies |
| Adaptive CTLE + 5-tap DFE | Compensates >35 dB loss at 12.9 GHz while tracking temperature-induced channel drift - enables stable operation across –40°C to +85°C ambient |
| Integrated 2×2 cross-point | Permits lane crossing, fanout, or multiplexing without external switches - reduces BOM count and PCB layer count in QSFP28/CFP4 modules |
| On-chip diagnostics | EOM, PRBS generator/checker, and signal detect thresholds provide in-system validation without external test gear - accelerates bring-up and field diagnostics |
| Low-jitter 3-tap FIR transmitter | Programmable pre-emphasis settings (c(0)=4 to 31) correct transmitter-induced ISI - improves eye opening at receiver after long interconnects |
Applications
| 100GbE Optical Front-Port Jitter Cleaning | Backplane Reach Extension |
|---|---|
|
Use Scenario: Retiming 25.78125-Gbps NRZ signals from SFP28/QSFP28 optical modules before entering FPGA or switch ASIC. IC Role / Device Role / Timing Role: Jitter cleaner and serial data re-timer that resets jitter budget using recovered clock on Channel 0 for system-level synchronization. Use Value: Reduces total jitter to 0.16 UIpp, enabling BER ≤10⁻¹⁵ compliance in 802.3bj-compliant 100GbE systems without requiring ultra-low-jitter external clocks. |
Use Scenario: Extending electrical reach across 30+ inch FR4 backplanes with multiple connectors and crosstalk in enterprise routers. IC Role / Device Role / Timing Role: Dual-channel signal conditioner that compensates frequency-dependent loss up to 35 dB at 12.9 GHz using adaptive CTLE and DFE. Use Value: Enables reliable 25-Gbps operation over legacy backplanes previously limited to 12.5 Gbps, avoiding costly redesign or material upgrades. |
| Active DAC/CAC Assembly | InfiniBand EDR Interconnect |
|
Use Scenario: Embedding in 3m/5m active direct-attach copper cables for high-density Top-of-Rack switching. IC Role / Device Role / Timing Role: Low-latency (≤500 ps) re-timer with integrated cross-point for bidirectional lane management and cable-specific equalization tuning. Use Value: Achieves sub-10⁻¹⁵ BER at 25.78125 Gbps while maintaining <2 ms CDR lock time - critical for hot-plug and link training in data center environments. |
Use Scenario: Interfacing GPU clusters and high-performance computing nodes via InfiniBand EDR (25.78125 Gbps per lane). IC Role / Device Role / Timing Role: Multi-rate retimer supporting exact EDR line rate and sub-rates (e.g., 12.16512 Gbps) with on-chip PRBS validation for link integrity. Use Value: Guarantees deterministic latency and jitter performance across temperature, eliminating intermittent link drops in HPC thermal cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar retimer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS250DF230RTV | Same silicon, 32-pin QFN package with exposed thermal pad; RθJB = 10.7°C/W vs. ZLST's 24.5°C/W; supports 105°C PCB temperature | Better thermal performance in space-constrained, high-power-density designs; requires different land pattern and solder stencil | Select RTV for ambient >85°C or when board-level thermal resistance must be minimized without heat sink |
| DS125DF410 | Quad-channel, 12.5-Gbps max per channel; no sub-rate support below 10 Gbps; lower power (180 mW/channel); lacks integrated cross-point | Targeted at 10/25G Ethernet aggregation; insufficient for 25G+ InfiniBand EDR or CEI-25G-LR | Choose only for cost-sensitive 10G–12.5G applications where dual-channel 25G capability is unnecessary |
Compared with DS250DF230RTV, DS250DF230ZLST offers identical signal integrity performance but trades thermal efficiency for NFBGA manufacturability and board-level robustness; versus DS125DF410, DS250DF230ZLST delivers 2× data rate headroom, sub-rate flexibility, and integrated cross-point-critical for next-gen 100G+ interconnects.
Availability
DS250DF230ZLST is available at Aetrix Electronics and suitable for 100GbE optical modules, InfiniBand EDR interconnects, and active copper cable assemblies requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for production ramp.
Supply support for DS250DF230ZLST includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and high-speed interface solutions, with decades of expertise in signal integrity and timing products.
The DS250DF230ZLST belongs to TI's high-speed retimer product line, designed specifically for 25G+ serial data links in optical communications, AI/ML infrastructure, and cloud-scale networking equipment.
FAQ
What data rates does the DS250DF230ZLST support?
The DS250DF230ZLST supports full-rate operation from 19.6 Gbps to 25.8 Gbps, plus half-rate (9.8–12.9 Gbps) and quarter-rate (4.9–6.45 Gbps) modes. Confirmed supported sub-rates include 12.16512 Gbps, 9.8304 Gbps, and 6.144 Gbps - all verified in TI SNLS590C datasheet Section 3 and Table 7.5.
Does the DS250DF230ZLST require an external reference clock?
No, the DS250DF230ZLST operates with a single 2.5 V supply and does not require an external low-jitter reference clock. It uses an internal calibration clock derived from a 30.72-MHz or 25-MHz LVCMOS input (CAL_CLK_IN), which has relaxed phase noise requirements per Section 6.1 of the DS250DF230ZLST datasheet.
What is the thermal performance difference between DS250DF230ZLST and DS250DF230RTV?
The DS250DF230ZLST (NFBGA) has RθJB = 24.5°C/W, while DS250DF230RTV (QFN) achieves 10.7°C/W due to its exposed thermal pad. This allows the RTV variant to sustain higher PCB temperatures (up to 105°C) without a heat sink - confirmed in Section 7.4 Thermal Information of the DS250DF230ZLST datasheet.
Can the DS250DF230ZLST provide a recovered clock output?
Yes, the DS250DF230ZLST provides a recovered clock output on Channel 0 via the TEST0/RCK0 pin when configured through register programming. This 2.5-V LVCMOS clock is intended for system-level synchronization in optical module applications, as documented in Section 6.1 Pin Functions and Section 5 Description.
How is SMBus addressing configured on the DS250DF230ZLST?
SMBus addressing on the DS250DF230ZLST is set using two 4-level strap pins: ADDR0 and ADDR1. Each pin accepts four states (1 kΩ to GND, 10 kΩ to GND, float, 1 kΩ to VDD), enabling 16 unique addresses. Configuration occurs at power-up and is detailed in Table 6-1 and Section 8.4.3 of the DS250DF230ZLST datasheet.
DS250DF230ZLST Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 36-LFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Retimer
- Interface:
- -
- Voltage - Supply:
- -
- Supplier Device Package:
- 36-NFBGA (5x5)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
DS250DF230ZLST FAQ
1.How can I place an order for DS250DF230ZLST through Aetrix?
Please submit a Request for Quotation (RFQ) for DS250DF230ZLST on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for DS250DF230ZLST reliable?
The price and inventory of DS250DF230ZLST are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS250DF230ZLST is usually 5 days.
3.What payment methods are accepted for DS250DF230ZLST?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS250DF230ZLST transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS250DF230ZLST?
DS250DF230ZLST orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS250DF230ZLST order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for DS250DF230ZLST?
For technical support, including DS250DF230ZLST datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS250DF230ZLST requirements.
6.How does Aetrix verify that DS250DF230ZLST is sourced from the original manufacturer or authorized distributors?
All DS250DF230ZLST products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that DS250DF230ZLST meets industry standards.
7.What is the process for return or replacement of DS250DF230ZLST?
All DS250DF230ZLST units undergo pre-shipment inspection (PSI). If there is an issue with DS250DF230ZLST, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The DS250DF230ZLST part is unused and in its original packaging.
Return procedure for DS250DF230ZLST:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DS250DF230ZLST Tags
-
NVT4857UKAZ
NXP Semiconductors
-
TCA8418RTWR
Texas Instruments
-
PCA9546APWR
Texas Instruments
-
MD0100N8-G
Microchip Technology
-
PCA9548APW,118
NXP Semiconductors
-
PCA9540BDP,118
NXP Semiconductors
-
PCA9548APWR
Texas Instruments
-
PCA9546APW,118
NXP Semiconductors
-
PTN3360DBS,518
NXP Semiconductors
-
PCA9546ABS,118
NXP Semiconductors
-
PCA9518PWR
Texas Instruments
-
PCA9545APW,118
NXP Semiconductors
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
