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Texas Instruments SN65LVELT23DR
- Part No.:
- SN65LVELT23DR
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
SN65LVELT23DR.pdf
- Description:
- IC TRANSLTR UNIDIRECTIONAL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,071
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Product details
Overview
SN65LVELT23DR from Texas Instruments is a dual 3.3-V differential LVPECL/LVDS-to-LVTTL translator IC in SOIC-8 package, delivering 24-mA LVTTL outputs with 2-ns typical propagation delay and support for clock/data frequencies exceeding 180 MHz. It performs level translation for high-speed backplane signaling and timing distribution in telecom clocking and FPGA interface applications.
For engineers reviewing the SN65LVELT23DR datasheet, SN65LVELT23DR pinout, SN65LVELT23DR application, or SN65LVELT23DR equivalent, this device serves as a drop-in replacement for MC100LVELT23 in LVTTL interfacing scenarios requiring precise skew control, internal input biasing, and operation across –40°C to 85°C.
Technical Context
The SN65LVELT23DR integrates two independent LVPECL/LVDS differential input channels with built-in 50-kΩ pullup/pulldown resistors, enabling open-input termination at VCC/2 without external components. Each channel drives a dedicated LVTTL output with rail-to-rail swing (VOH ≥ 2.4 V, VOL ≤ 0.5 V at IOL = 24 mA).
Its AC performance includes 30–150 ps output-to-output skew (tSK++/tSK– –), <10 ps RMS random jitter, and 330–630 ps output rise/fall times (0.8 V–2.0 V) under 20-pF load. The device maintains stable operation across 3.0–3.6 V VCC with thermal resistance θJA = 79°C/W (SOIC) and MSL Level-1 reflow compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 3.0 V to 3.6 V - Enables direct integration into 3.3-V systems with ±0.3-V tolerance. |
| Max Switching Frequency | 180 MHz (min) - Supports high-speed clock/data transmission in backplane and FPGA I/O interfaces. |
| Propagation Delay | 1.2–2.2 ns (typ/max) - Ensures tight timing alignment for synchronous digital systems. |
| LVTTL Output Drive | 24 mA sink/source - Directly drives standard TTL loads without external buffers. |
| Input Bias Resistors | 50 kΩ pullup + 50 kΩ pulldown - Eliminates need for external termination on unused PECL inputs. |
| Operating Temperature | –40°C to +85°C - Qualified for industrial-grade embedded and telecom infrastructure use. |
| Output Skew | ≤150 ps (tSK++), ≤135 ps (tSK– –) - Minimizes timing mismatch between Q0 and Q1 outputs. |
Pinout & Package
SN65LVELT23DR uses an industry-standard SOIC-8 (D) package with 1.27-mm lead pitch, 3.9-mm body width, and 1.75-mm max height. Pin 1 is located in Quadrant Q1 per tape-and-reel orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (D0) | LVPECL positive input | Differential pair input for first channel; internally biased to VCC/2 when floating. |
| 2 (D0) | LVPECL negative input | Complementary input to Pin 1; enables noise-immune differential reception. |
| 3 (D1) | LVPECL positive input | Second differential input channel; functionally identical to Pins 1/2. |
| 4 (D1) | LVPECL negative input | Complementary input to Pin 3; supports dual-channel parallel translation. |
| 5 (VCC) | Positive supply | 3.3-V power rail; supplies both input receivers and LVTTL output drivers. |
| 6 (Q0) | LVTTL output | Single-ended TTL-level output corresponding to D0/D0 inputs; 24-mA drive capability. |
| 7 (Q1) | LVTTL output | Single-ended TTL-level output corresponding to D1/D1 inputs; matched timing with Q0. |
| 8 (GND) | Ground reference | Common return path for supply and signal integrity; decoupling required near Pin 5/8. |
Key Features
| Feature | Design Value |
|---|---|
| Drop-in MC100LVELT23 compatibility | Identical pinout, function, and AC specs enable seamless migration without PCB redesign. |
| Internal input biasing | 50-kΩ pullup + 50-kΩ pulldown resistors eliminate external termination components on unused inputs. |
| Temperature-compensated design | Maintains consistent DC thresholds and propagation delay across –40°C to +85°C operating range. |
| Low-output skew | ≤150 ps output-to-output skew ensures synchronized timing delivery to downstream logic. |
| High-frequency support | Validated >180-MHz operation enables use in OC-48/STM-16 clock recovery and SerDes interfaces. |
Applications
| Backplane Clock Distribution | FPGA I/O Interface Translation |
|---|---|
|
Use Scenario: Distributing low-jitter clock signals across multi-slot telecom chassis using differential PECL traces. IC Role / Device Role / Timing Role: Translates differential LVPECL clock from central timing module to single-ended LVTTL for slot-local PLLs and ASICs. Use Value: 2-ns propagation delay and <10-ps RMS jitter preserve timing margin; internal biasing simplifies hot-swap-capable backplane designs. |
Use Scenario: Interfacing FPGA transceiver banks (LVDS/LVPECL) with legacy LVTTL peripherals like memory controllers or GPIO expanders. IC Role / Device Role / Timing Role: Bidirectional level shifter converting FPGA differential outputs to LVTTL-compatible control/data lines. Use Value: Dual-channel architecture supports simultaneous clock+data translation; 24-mA drive directly loads multiple TTL inputs without fanout buffers. |
| Optical Line Card Timing | Industrial PLC Synchronization |
|
Use Scenario: Converting recovered 155.52-MHz SONET clock from optical PHY to LVTTL for local timing generation in line cards. IC Role / Device Role / Timing Role: High-fidelity clock buffer and level translator ensuring sub-nanosecond edge alignment for SERDES clocking. Use Value: 180-MHz bandwidth and ≤150-ps skew meet SONET/SDH jitter compliance; SOIC-8 footprint fits dense line-card layouts. |
Use Scenario: Synchronizing distributed I/O modules in modular PLC systems using deterministic time-triggered communication. IC Role / Device Role / Timing Role: Translating master controller's LVPECL timing strobes to LVTTL for slave-module interrupt and latch signals. Use Value: Industrial temperature rating (–40°C to +85°C) and robust ESD protection (2-kV HBM) ensure reliability in factory-floor environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LVPECL-to-LVTTL translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC100LVELT23DG | Same pinout and AC specs; identical SOIC-8 package but manufactured by ON Semiconductor. | No TI-specific thermal derating data published; MSL rating not explicitly documented in public datasheet. | Select when cross-manufacturer second sourcing is required and TI supply constraints exist. |
| SN65LVEP23DR | Supports extended VCC range (2.375–3.6 V); adds LVDS input mode and higher drive (32 mA). | Enables mixed-voltage systems (e.g., 2.5-V LVDS sources); requires updated layout for enhanced ESD pad structure. | Choose for future-proofing or when interfacing non-PECL differential sources; not drop-in compatible due to different biasing scheme. |
Compared with MC100LVELT23DG, SN65LVELT23DR offers tighter jitter spec (4–10 ps vs. unspecified) and TI's full industrial qualification; versus SN65LVEP23DR, it provides simpler biasing and guaranteed drop-in replacement for legacy MC100LVELT23 designs.
Availability
SN65LVELT23DR is available at Aetrix Electronics and suitable for backplane clock distribution, FPGA I/O interface translation, and optical line card timing requiring stable component supply, long-term lifecycle assurance, and traceable industrial-grade sourcing.
Supply support for SN65LVELT23DR 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 connectivity technologies with over 90 years of innovation in high-reliability signal conditioning and interface solutions.
The SN65LVELT23DR belongs to TI's high-speed interface translator product line, engineered specifically for deterministic timing integrity in telecom infrastructure, industrial automation, and FPGA-based systems requiring precise level conversion.
FAQ
What is the maximum operating frequency supported by the SN65LVELT23DR?
The SN65LVELT23DR supports clock/data frequencies up to 180 MHz minimum, with typical operation verified to 300 MHz under specified conditions (VCC = 3.3 V, VOH > 2.4 V, VOL < 0.5 V). This makes SN65LVELT23DR suitable for OC-48/STM-16 clock recovery and high-speed FPGA interface applications where timing fidelity is critical.
Does the SN65LVELT23DR require external pullup or pulldown resistors on its LVPECL inputs?
No, the SN65LVELT23DR includes internal 50-kΩ pullup and 50-kΩ pulldown resistors on each differential input pair (D0/D0 and D1/D1), automatically biasing floating inputs to VCC/2. This eliminates external termination components and simplifies PCB layout for the SN65LVELT23DR in systems with unused channels or hot-swap capability.
What is the output drive strength of the SN65LVELT23DR's LVTTL outputs?
The SN65LVELT23DR delivers 24 mA of sink and source current per LVTTL output (Q0 and Q1), meeting standard LVTTL voltage thresholds (VOH ≥ 2.4 V at –3 mA, VOL ≤ 0.5 V at 24 mA). This drive strength allows SN65LVELT23DR to directly interface with multiple TTL loads or legacy logic without external buffers.
Is the SN65LVELT23DR pin-compatible with the MC100LVELT23?
Yes, the SN65LVELT23DR is explicitly designed as a drop-in compatible replacement for the MC100LVELT23, sharing identical SOIC-8 pinout, electrical specifications, and functional behavior. This compatibility enables seamless migration in existing designs without PCB or firmware changes for the SN65LVELT23DR.
What package type and moisture sensitivity level does the SN65LVELT23DR use?
The SN65LVELT23DR is housed in an SOIC-8 (D) package with 1.27-mm lead pitch and carries a Moisture Sensitivity Level (MSL) rating of Level-1 at 260°C peak reflow, meaning it can be stored indefinitely at ambient conditions without baking prior to assembly. This MSL rating applies specifically to the SN65LVELT23DR variant supplied in large tape-and-reel format (2500 units/reel).
SN65LVELT23DR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 65LVELT
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Translator Type:
- Mixed Signal
- Channel Type:
- Unidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 2
- Voltage - VCCA:
- -
- Voltage - VCCB:
- -
- Input Signal:
- LVDS, LVPECL
- Output Signal:
- LVTTL
- Output Type:
- Non-Inverted
- Data Rate:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC (0.154", 3.90mm Width)
SN65LVELT23DR FAQ
1.How can I place an order for SN65LVELT23DR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN65LVELT23DR 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 SN65LVELT23DR reliable?
The price and inventory of SN65LVELT23DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN65LVELT23DR is usually 5 days.
3.What payment methods are accepted for SN65LVELT23DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN65LVELT23DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN65LVELT23DR?
SN65LVELT23DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN65LVELT23DR 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 SN65LVELT23DR?
For technical support, including SN65LVELT23DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN65LVELT23DR requirements.
6.How does Aetrix verify that SN65LVELT23DR is sourced from the original manufacturer or authorized distributors?
All SN65LVELT23DR 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 SN65LVELT23DR meets industry standards.
7.What is the process for return or replacement of SN65LVELT23DR?
All SN65LVELT23DR units undergo pre-shipment inspection (PSI). If there is an issue with SN65LVELT23DR, 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 SN65LVELT23DR part is unused and in its original packaging.
Return procedure for SN65LVELT23DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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