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Texas Instruments SN65LVELT23D
- Part No.:
- SN65LVELT23D
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
SN65LVELT23D.pdf
- Description:
- IC TRANSLTR UNIDIRECTIONAL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:270
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Product details
Overview
SN65LVELT23D from Texas Instruments is a dual 3.3-V differential LVPECL/LVDS-to-LVTTL translator IC used for high-speed clock and data level conversion in backplane and timing interfaces. It delivers 24-mA LVTTL outputs, supports >180 MHz operation, exhibits 2-ns typical propagation delay, and integrates internal 50-kΩ pullup/pulldown resistors for open-input biasing.
For engineers reviewing the SN65LVELT23D datasheet, SN65LVELT23D pinout, SN65LVELT23D application, or SN65LVELT23D equivalent, this device is selected for precise low-jitter signal translation between differential high-speed buses and single-ended TTL logic domains in telecom infrastructure, FPGA interconnects, and test equipment.
Technical Context
The SN65LVELT23D implements two independent differential input stages with built-in termination biasing at VCC/2, enabling direct connection to LVPECL or LVDS sources without external resistors. Each channel converts differential swing (200–1000 mV) into full-rail LVTTL-compatible outputs (VOH ≥ 2.4 V, VOL ≤ 0.5 V at 24 mA).
Its internal temperature-compensated design maintains stable DC thresholds across –40°C to 85°C, while AC performance is characterized with <160 ps output skew and 4–10 ps RMS random jitter - critical for synchronous multi-channel timing distribution.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply voltage | 3.0 V to 3.6 V - enables direct integration into 3.3-V systems with ±0.3-V tolerance |
| Max switching frequency | 300 MHz (typical) - supports high-speed serial clock recovery and parallel data strobes |
| Propagation delay | 1.2–2.2 ns (over temp) - ensures sub-nanosecond timing margin in tight setup/hold windows |
| LVTTL output drive | 24 mA sink/source - directly drives standard TTL loads without external buffers |
| Input common-mode range | 1.2 V to VCC - accommodates LVPECL (VCC–1.3 V) and LVDS (1.2 V) input standards |
| Output skew | ≤160 ps (tSK++) - preserves phase alignment between Q0 and Q1 outputs for dual-clock paths |
| Operating temperature | –40°C to +85°C - qualified for industrial and telecom base station environments |
Pinout & Package
SN65LVELT23D is housed in an industry-standard SOIC-8 package (D package), 3.9 mm × 4.9 mm, 1.75 mm max height, RoHS-compliant NiPdAu lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (D0) | Non-inverting LVPECL/LVDS input | Differential pair input for first channel; internally biased to VCC/2 when floating |
| 2 (D0) | Inverting LVPECL/LVDS input | Complementary input for first channel; enables noise-rejecting differential reception |
| 3 (D1) | Non-inverting LVPECL/LVDS input | Differential pair input for second channel; identical biasing and threshold behavior as Pin 1 |
| 4 (D1) | Inverting LVPECL/LVDS input | Complementary input for second channel; supports independent dual-channel translation |
| 5 (VCC) | Positive supply | 3.3-V power rail; powers both input receivers and LVTTL output drivers |
| 6 (Q0) | LVTTL output | Single-ended TTL-compatible output for Channel 0; 24-mA drive capability |
| 7 (Q1) | LVTTL output | Single-ended TTL-compatible output for Channel 1; matched delay and skew to Q0 |
| 8 (GND) | Ground reference | Common return path for supply and signals; requires low-impedance PCB plane for jitter control |
Key Features
| Feature | Design Value |
|---|---|
| Drop-in compatibility | Pin- and function-compatible with MC100LVELT23 - enables legacy design upgrades without layout change |
| Internal biasing | 50-kΩ pullup and pulldown on all inputs - eliminates need for external termination resistors on unterminated lines |
| Temperature compensation | On-chip thermal feedback maintains consistent input thresholds and propagation delay across –40°C to +85°C |
| Low output skew | ≤160 ps max tSK++ - preserves timing integrity between dual outputs in clock fanout applications |
| High ESD robustness | 2 kV HBM / 1.5 kV CDM - improves handling reliability and board-level surge immunity in manufacturing |
Applications
| Backplane Clock Distribution | FPGA I/O Interface Translation |
|---|---|
Use Scenario: Distributing a single high-frequency reference clock across multiple line cards in a modular telecom chassis via differential backplane traces. IC Role / Device Role / Timing Role: Translates LVPECL backplane clock to LVTTL for local clock buffering and fanout to ASIC/FPGA clock inputs. Use Value: Maintains <160 ps inter-output skew and <10 ps RMS jitter to meet tight setup/hold margins of high-speed SerDes PLLs. |
Use Scenario: Interfacing an FPGA's LVDS I/O bank to legacy LVTTL peripherals such as memory controllers or status LEDs. IC Role / Device Role / Timing Role: Bidirectional level translation bridge between differential FPGA outputs and single-ended system logic. Use Value: Enables direct connection without external bias networks, reducing BOM count and PCB area by eliminating four 50-Ω resistors per channel. |
| Test Equipment Signal Conditioning | Industrial PLC Timing Module |
Use Scenario: Converting high-speed pattern generator outputs (LVDS) to LVTTL for driving DUT clock inputs in automated test systems. IC Role / Device Role / Timing Role: Precision timing translator ensuring deterministic edge placement and minimal added jitter. Use Value: 2-ns propagation delay and 330–630 ps rise/fall times support accurate timing calibration down to 100-ps resolution. |
Use Scenario: Synchronizing distributed I/O modules in programmable logic controllers using a centralized LVPECL timing bus. IC Role / Device Role / Timing Role: Local clock regeneration node converting differential timing signals to robust LVTTL for microcontroller clocking. Use Value: Operates reliably over –40°C to +85°C with built-in thermal compensation, eliminating recalibration drift in uncontrolled cabinet environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential-to-single-ended translator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC100LVELT23DG | Same pinout and function; identical AC specs but rated for –40°C to +85°C only under commercial conditions (no extended temp validation) | Valid for cost-sensitive commercial designs; not recommended for industrial ambient extremes | Select if sourcing legacy inventory or requiring identical footprint with TI-agnostic supply chain |
| SN65LVDS31DR | LVDS-to-LVTTL only (no LVPECL support); higher 3.5-ns propagation delay; no internal pullup/pulldown | Suitable for pure LVDS source systems but requires external biasing and offers lower speed margin | Choose only when LVPECL compatibility is unnecessary and board space allows for external 50-Ω termination |
Compared with MC100LVELT23DG and SN65LVDS31DR, the SN65LVELT23D uniquely combines LVPECL/LVDS dual-standard input support, integrated biasing, and sub-2-ns delay in a production-qualified industrial-grade SOIC-8 package - making it the optimal choice for mixed-signal timing bridges where layout simplicity and jitter performance are critical.
Availability
SN65LVELT23D is available at Aetrix Electronics and suitable for backplane clock distribution, FPGA I/O interface translation, and test equipment signal conditioning requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for SN65LVELT23D 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 with emphasis on reliability, precision, and industrial-grade qualification.
The SN65LVELT23D belongs to TI's high-speed interface translator product line, engineered specifically for deterministic signal integrity in timing-critical infrastructure applications including telecom, test & measurement, and industrial automation.
FAQ
What is the maximum supported input voltage swing for SN65LVELT23D?
The SN65LVELT23D accepts differential input voltage swings from 200 mV to 1000 mV, with guaranteed full logic swing at the LVTTL outputs even at the minimum 200-mV input level. This range covers standard LVDS (350 mV) and LVPECL (800 mV) signaling amplitudes without external gain or attenuation.
Does SN65LVELT23D require external pullup or pulldown resistors on its differential inputs?
No, the SN65LVELT23D includes internal 50-kΩ pullup and pulldown resistors on all four differential inputs (D0, D0, D1, D1). These ensure proper VCC/2 biasing when inputs are left open or unterminated, eliminating the need for external resistors in most applications.
Can SN65LVELT23D operate with a 3.0-V supply voltage?
Yes, the SN65LVELT23D is fully specified for operation from 3.0 V to 3.6 V. At 3.0 V, it maintains LVTTL-compatible VOH ≥ 2.4 V and VOL ≤ 0.5 V under 24-mA load, and supports >180 MHz switching - making it compatible with low-voltage 3.0-V system rails.
What is the thermal resistance (θJA) of SN65LVELT23D in its SOIC-8 package?
The SN65LVELT23D in SOIC-8 (D package) has a junction-to-ambient thermal resistance (θJA) of 79°C/W under low-K board conditions and 98°C/W under high-K board conditions. Its maximum power dissipation is derated linearly above 25°C ambient, down to 288 mW at 85°C.
Is SN65LVELT23D pin-compatible with MC100LVELT23?
Yes, the SN65LVELT23D is explicitly drop-in compatible with MC100LVELT23, sharing identical SOIC-8 pinout, electrical behavior, and functional operation. TI confirms this compatibility in the official datasheet, enabling seamless replacement in existing designs.
SN65LVELT23D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 65LVELT
- Package/Case:
- Packaging:
- Bulk
- 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)
SN65LVELT23D FAQ
1.How can I place an order for SN65LVELT23D through Aetrix?
Please submit a Request for Quotation (RFQ) for SN65LVELT23D 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 SN65LVELT23D reliable?
The price and inventory of SN65LVELT23D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN65LVELT23D is usually 5 days.
3.What payment methods are accepted for SN65LVELT23D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN65LVELT23D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN65LVELT23D?
SN65LVELT23D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN65LVELT23D 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 SN65LVELT23D?
For technical support, including SN65LVELT23D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN65LVELT23D requirements.
6.How does Aetrix verify that SN65LVELT23D is sourced from the original manufacturer or authorized distributors?
All SN65LVELT23D 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 SN65LVELT23D meets industry standards.
7.What is the process for return or replacement of SN65LVELT23D?
All SN65LVELT23D units undergo pre-shipment inspection (PSI). If there is an issue with SN65LVELT23D, 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 SN65LVELT23D part is unused and in its original packaging.
Return procedure for SN65LVELT23D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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