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Texas Instruments SN65CML100DR
- Part No.:
- SN65CML100DR
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
SN65CML100DR.pdf
- Description:
- IC TRANSLTR UNIDIRECTIONAL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,980
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Product details
Overview
SN65CML100DR from Texas Instruments is a 1.5-Gbps LVDS/LVPECL/CML-to-CML translator/repeater in SOIC-8 package, supporting differential signaling up to 1.5 Gbps with <70 ps peak-to-peak jitter, 800 ps max propagation delay, and direct drive of 25-Ω or 50-Ω loads at 1.8-V/2.5-V/3.3-V supplies. It enables high-speed network routing and clock distribution in telecom infrastructure.
For engineers reviewing the SN65CML100DR datasheet, SN65CML100DR pinout, SN65CML100DR application, or SN65CML100DR equivalent, key selection criteria include its CML-compatible output drive capability, wide 0–4 V common-mode input range enabling direct coupling, 25 mV input hysteresis for noise immunity, and support for single-ended LVPECL inputs via VBB reference voltage.
Technical Context
The SN65CML100DR implements a fully differential signal path from A/B inputs to Y/Z outputs, minimizing pulse-width distortion and radiated emissions. Its receiver accepts LVDS (TIA/EIA-644), LVPECL, and CML levels, with internal hysteresis and wide common-mode tolerance (0 V to 4 V) eliminating AC-coupling capacitors in many configurations.
Internally generated VBB (1.95 V nominal, tracking VCC 1:1) serves as a switching reference for single-ended LVPECL inputs; unused differential input must be tied to VBB. Output drivers are current-mode with rail-to-rail swing referenced to VTT, supporting 25-Ω or 50-Ω termination to 1.8 V, 2.5 V, or 3.3 V supplies without level-shifting circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Signaling Rate | Up to 1.5 Gbps - supports OC-30/STM-10 and 10G Ethernet PHY interconnects |
| Total Jitter (pp) | ≤70 ps - ensures bit-error-rate compliance in 1.5 Gbps PRBS23 data streams |
| Propagation Delay | ≤800 ps - enables tight timing budgets in multi-stage repeater chains |
| Input Threshold Hysteresis | 25 mV - improves noise margin against crosstalk and ground bounce in dense PCB layouts |
| Common-Mode Input Range | 0 V to 4 V - allows direct coupling from LVPECL, CML, and LVDS sources without DC-blocking caps |
| VBB Reference Voltage | 1.95 V ±60 mV - stable internal bias for single-ended LVPECL input configuration |
| Differential Output Swing | 640–1000 mV (50 Ω), 285–500 mV (25 Ω) - matches standard CML receiver thresholds across supply voltages |
Pinout & Package
SN65CML100DR is housed in an 8-pin SOIC (D) package, 3.9 mm × 4.9 mm, 1.75 mm max height, RoHS-compliant with NiPdAu lead finish and MSL Level-1 rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A | Differential input non-inverting | Accepts LVDS/LVPECL/CML signals; paired with B for full differential operation |
| B | Differential input inverting | Complements A; common-mode range 0–4 V enables direct coupling without AC caps |
| Y | Differential output non-inverting | CML-level output driving 25 Ω or 50 Ω to VTT (1.8 V/2.5 V/3.3 V) |
| Z | Differential output inverting | Complements Y; fully differential path minimizes EMI and skew |
| VBB | Internal reference voltage output | 1.95 V reference for single-ended LVPECL input; requires 0.01 µF decoupling when used |
| VCC | Power supply | 3.3 V nominal (3.0–3.6 V); powers internal logic and bias circuits |
| GND | Ground | Signal and power return; separate low-impedance path required for jitter performance |
| NC | No connect | Pin 1 index area only; no internal connection - leave unconnected |
Key Features
| Feature | Design Value |
|---|---|
| CML-compatible output drive | Directly drives 25-Ω or 50-Ω loads terminated to 1.8 V/2.5 V/3.3 V VTT - eliminates external level shifters |
| Wide common-mode input range | 0 V to 4 V - supports LVDS, LVPECL, and CML inputs without AC coupling or bias networks |
| Single-ended LVPECL interface | VBB pin provides internal 1.95 V reference - enables use with legacy single-ended PECL sources |
| Low part-to-part skew | ≤100 ps - ensures deterministic timing alignment across multiple devices in parallel paths |
| Low-power operation | 12 mA typical ICC at 3.3 V - reduces thermal load in high-density repeater modules |
Applications
| 622-MHz Central Office Clock Distribution | High-Speed Network Routing |
|---|---|
Use Scenario: Distributing low-jitter 622-MHz SONET/SDH clock signals across backplane traces in central office line cards. IC Role / Device Role / Timing Role: Low-jitter clock repeater translating LVPECL clock to CML for fanout to multiple SerDes PHYs. Use Value: ≤70 ps peak-to-peak jitter preserves clock integrity over long traces; VBB enables direct interface to legacy LVPECL oscillators. | Use Scenario: Interfacing between LVDS-based switch fabric controllers and CML-based optical transceiver modules in 10G Ethernet routers. IC Role / Device Role / Timing Role: Bidirectional level translator bridging LVDS control planes and CML data paths. Use Value: 1.5 Gbps signaling rate supports 10GBASE-R line rates; 25 mV hysteresis rejects board-level noise in mixed-signal environments. |
| Wireless Basestation Baseband | Low-Jitter Clock Repeater |
Use Scenario: Connecting FPGA-based digital predistortion (DPD) engines to CML DACs/ADCs in massive MIMO RF units. IC Role / Device Role / Timing Role: High-speed data translator ensuring timing-coherent I/Q sample transfer. Use Value: 800 ps max propagation delay enables sub-nanosecond synchronization; SOIC-8 footprint simplifies layout in space-constrained RF modules. | Use Scenario: Regenerating degraded clock signals between ASICs in high-performance computing interconnects. IC Role / Device Role / Timing Role: Jitter-cleaned repeater restoring edge integrity in multi-hop clock trees. Use Value: Deterministic jitter <65 ps (peak-to-peak) prevents timing closure violations; fully differential path suppresses common-mode noise injection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed level translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN65LVDS100DR | LVDS-to-LVDS repeater only; no CML output or LVPECL input support; 800 Mbps max rate | Limited to LVDS ecosystems; cannot interface with CML transceivers or LVPECL clocks | Select when system uses LVDS exclusively and jitter budget allows higher values (120 ps pp) |
| LMH0384SQ/NOPB | SMPTE serial digital interface repeater; integrated cable equalization; 2.97 Gbps; different pinout and protocol stack | Designed for video broadcast infrastructure; not suitable for generic CML/LVPECL translation | Choose only for SDI/HDMI transport; incompatible for general-purpose high-speed logic translation |
Compared with SN65LVDS100DR and LMH0384SQ/NOPB, the SN65CML100DR uniquely supports true multi-standard level translation (LVDS/LVPECL/CML) at 1.5 Gbps with CML output drive capability, making it irreplaceable in hybrid signal-chain architectures requiring interoperability across legacy and modern high-speed interfaces.
Availability
SN65CML100DR is available at Aetrix Electronics and suitable for 622-MHz clock distribution, high-speed network routing, wireless basestation baseband, and low-jitter clock repeater applications requiring stable component supply across extended temperature ranges (–40°C to 85°C).
Supply support for SN65CML100DR 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.
The SN65CML100DR belongs to TI's high-speed interface portfolio, engineered specifically for signal integrity preservation in telecom and datacom equipment where multi-standard compatibility, low jitter, and direct-load drive are critical.
FAQ
What is the maximum supported data rate for SN65CML100DR?
The SN65CML100DR supports signaling rates up to 1.5 Gbps, validated using 223–1 PRBS patterns at 25°C with 200 mV differential input voltage. This rate is specified under recommended operating conditions (VCC = 3.3 V, TA = 25°C, RT = 50 Ω, VTT = 3.3 V) and applies to both translation and repeater modes of the SN65CML100DR.
Can SN65CML100DR accept single-ended LVPECL inputs?
Yes, the SN65CML100DR supports single-ended LVPECL inputs using the VBB pin as a switching reference voltage. When configured this way, the unused differential input (A or B) is connected to VBB, which outputs 1.95 V ±60 mV. The SN65CML100DR datasheet specifies decoupling VBB with a 0.01-µF capacitor and limiting current to ≤400 µA.
What are the output termination requirements for SN65CML100DR?
The SN65CML100DR outputs require external 25-Ω or 50-Ω termination to VTT (1.8 V, 2.5 V, or 3.3 V). Output voltage levels (VOH/VOL) and differential swing (|VOD|) are specified relative to VTT and track VTT 1:1. For example, with VTT = 2.5 V and 50-Ω termination, |VOD| is 640–1000 mV - a design requirement directly enforced by the SN65CML100DR's CML driver architecture.
Does SN65CML100DR require AC-coupling capacitors on its inputs?
No, the SN65CML100DR does not require AC-coupling capacitors due to its 0 V to 4 V common-mode input voltage range. This allows direct DC coupling from LVDS, LVPECL, and CML sources. The SN65CML100DR's 25 mV input hysteresis further enhances noise immunity in such configurations, eliminating the need for external biasing networks.
What is the function of the NC pin on SN65CML100DR?
The NC (No Connect) pin on SN65CML100DR is Pin 1 - the index marker for SOIC-8 orientation. It has no internal connection and must remain unconnected on the PCB. TI's package drawing D0008A confirms this pin is reserved solely for mechanical indexing; routing or grounding the NC pin may compromise SN65CML100DR signal integrity or thermal performance.
SN65CML100DR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 65CML
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Translator Type:
- Mixed Signal
- Channel Type:
- Unidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 1
- Voltage - VCCA:
- -
- Voltage - VCCB:
- -
- Input Signal:
- CML, LVDS, LVPECL
- Output Signal:
- CML
- Output Type:
- Differential
- Data Rate:
- 1.5Gbps
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC (0.154", 3.90mm Width)
SN65CML100DR FAQ
1.How can I place an order for SN65CML100DR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN65CML100DR 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 SN65CML100DR reliable?
The price and inventory of SN65CML100DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN65CML100DR is usually 5 days.
3.What payment methods are accepted for SN65CML100DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN65CML100DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN65CML100DR?
SN65CML100DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN65CML100DR 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 SN65CML100DR?
For technical support, including SN65CML100DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN65CML100DR requirements.
6.How does Aetrix verify that SN65CML100DR is sourced from the original manufacturer or authorized distributors?
All SN65CML100DR 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 SN65CML100DR meets industry standards.
7.What is the process for return or replacement of SN65CML100DR?
All SN65CML100DR units undergo pre-shipment inspection (PSI). If there is an issue with SN65CML100DR, 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 SN65CML100DR part is unused and in its original packaging.
Return procedure for SN65CML100DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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