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Home > Products > Integrated Circuits (ICs) > Logic > Translators, Level Shifters

Texas Instruments SN65EPT23DGK

Name: SN65EPT23DGK
Brand: Texas Instruments
SKU: SN65EPT23DGK
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN65EPT23DGK

Manufacturer:: Texas Instruments

Category:: Translators, Level Shifters

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Datasheet:: SN65EPT23DGK.pdf

Description:: IC TRANSLATOR UNIDIR 8VSSOP

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Product details

Overview

SN65EPT23DGK from Texas Instruments is a dual 3.3 V differential LVPECL/LVDS-to-LVTTL/LVCMOS translator IC used for high-speed clock and data level conversion in backplane interfaces. It delivers 24 mA LVTTL outputs, supports >300 MHz switching frequency, exhibits 2.0 ns typical propagation delay, and operates across –40°C to +85°C with VCC = 3.0–3.6 V.

For engineers reviewing the SN65EPT23DGK datasheet, SN65EPT23DGK pinout, SN65EPT23DGK application, or SN65EPT23DGK equivalent, this device serves as a low-power, temperature-compensated interface solution for translating differential timing signals into single-ended logic levels in telecom, industrial control, and FPGA-adjacent clock distribution systems.

Technical Context

The SN65EPT23DGK integrates two independent differential input channels (LVPECL/LVDS/CML compatible) with internal termination biasing at VCC/2 for open-input robustness, and two LVTTL/LVCMOS-compatible outputs with 24 mA drive strength. Each channel features matched propagation paths to minimize skew.

It employs built-in temperature compensation to stabilize DC thresholds and timing performance across its full operating range. Input common-mode voltage range spans 1.2 V to 3.3 V, supporting both LVPECL and LVDS signaling standards without external resistors.

Key Specifications

Parameter	Value and Actual Design Meaning
VCC Range	3.0 V to 3.6 V - Ensures stable operation across industrial-grade supply tolerances and noise margins.
Max Switching Frequency	300 MHz - Guarantees functional integrity for high-speed clock/data transmission in backplane and FPGA I/O applications.
Propagation Delay	2.0 ns typical - Enables precise timing alignment in synchronous systems with tight setup/hold windows.
Output Drive Strength	24 mA - Sufficient to drive standard LVTTL loads (e.g., 500 Ω pull-down) without external buffers.
Input Voltage Swing	150 mV to 1200 mV - Accepts low-amplitude LVDS and high-swing LVPECL inputs without signal conditioning.
Output Skew (TSK++/TSK−−)	110 ps - Maintains phase coherence between Q0 and Q1 outputs for dual-channel timing integrity.
Operating Temperature	–40°C to +85°C - Qualified for use in industrial and extended-temperature embedded systems.

Pinout & Package

VSSOP-8 (DGK) package: 3.0 mm × 3.0 mm, 1.1 mm max height, 0.65 mm lead pitch, exposed thermal pad optional per layout guidelines.

Pin/Terminal	Circuit Role	Design Meaning
D0	Differential LVPECL/LVDS input (non-inverting)	Accepts high-speed differential clock/data; internally biased to VCC/2 when floating.
D0̅	Differential LVPECL/LVDS input (inverting)	Paired with D0 to reject common-mode noise and enable robust signal recovery.
D1	Differential LVPECL/LVDS input (non-inverting)	Second independent differential input channel for dual-signal translation.
D1̅	Differential LVPECL/LVDS input (inverting)	Complements D1 to support fully differential routing and EMI resilience.
Q0	LVTTL/LVCMOS output	Single-ended logic-level output with 24 mA sink/source capability; rail-to-rail swing.
Q1	LVTTL/LVCMOS output	Second independent output synchronized to D1/D1̅; matched delay to Q0 ensures low inter-output skew.
VCC	Positive supply	3.3 V nominal power rail; powers both input receivers and output drivers; decoupling required near pin.
GND	Ground reference	Common return path for all analog and digital circuitry; low-inductance connection critical for jitter performance.

Key Features

Feature	Design Value
Dual-channel LVPECL/LVDS-to-LVTTL translation	Enables simultaneous conversion of two independent high-speed differential signals into TTL-compatible logic levels without external components.
Built-in temperature compensation	Maintains consistent input threshold and propagation delay across –40°C to +85°C, eliminating need for calibration or external compensation networks.
Open-input fail-safe biasing	Internally pulls unconnected D0/D0̅ and D1/D1̅ pairs to VCC/2, preventing metastability and ensuring defined output states during hot-plug or initialization.
Drop-in compatibility with MC100EPT23	Shares identical pinout, function mapping, and AC/DC specifications-allows direct replacement in legacy designs without PCB revision.
Low 2.0 ns propagation delay	Minimizes timing uncertainty in high-frequency clock distribution paths, supporting sub-nanosecond system-level timing budgets.

Applications

Backplane Clock Distribution	FPGA I/O Interface
Use Scenario: Transmitting 200+ MHz clock signals across multi-layer backplanes with impedance-controlled traces and connector discontinuities. IC Role / Device Role / Timing Role: Translates differential LVPECL clocks from a central timing module into single-ended LVTTL levels for local board synchronization. Use Value: Maintains <110 ps output skew and <10 ps RMS jitter to preserve clock integrity across distributed nodes without adding latency or requiring re-timing.	Use Scenario: Interfacing an FPGA's differential clock inputs (e.g., LVDS) to on-board microcontrollers or ASICs requiring LVTTL clock inputs. IC Role / Device Role / Timing Role: Bridges incompatible signaling standards while preserving edge fidelity and minimizing setup/hold violations at the FPGA boundary. Use Value: Eliminates need for discrete resistor networks or active repeaters, reducing BOM count and layout complexity in space-constrained FPGA carrier boards.
Industrial PLC Timing Module	Test Equipment Signal Conditioning
Use Scenario: Converting isolated LVDS encoder feedback signals into deterministic LVTTL pulses for real-time motion control logic in programmable logic controllers. IC Role / Device Role / Timing Role: Provides galvanically isolated signal translation stage with guaranteed monotonic response and no false triggering under EMI stress. Use Value: Delivers 24 mA drive strength to directly drive optocoupler inputs or Schmitt-triggered logic, avoiding additional buffer stages and associated propagation delays.	Use Scenario: Adapting high-speed test pattern generator outputs (LVPECL) to legacy LVTTL-based logic analyzers or protocol sniffers. IC Role / Device Role / Timing Role: Acts as a standardized interface adapter that preserves signal rise/fall times (<600 ps) and minimizes added jitter (<10 ps RMS). Use Value: Enables reuse of existing test infrastructure without modifying firmware or upgrading instrumentation-reducing validation cycle time and cost.

Backplane Clock Distribution

FPGA I/O Interface

Use Scenario: Transmitting 200+ MHz clock signals across multi-layer backplanes with impedance-controlled traces and connector discontinuities.

IC Role / Device Role / Timing Role: Translates differential LVPECL clocks from a central timing module into single-ended LVTTL levels for local board synchronization.

Use Value: Maintains <110 ps output skew and <10 ps RMS jitter to preserve clock integrity across distributed nodes without adding latency or requiring re-timing.

Use Scenario: Interfacing an FPGA's differential clock inputs (e.g., LVDS) to on-board microcontrollers or ASICs requiring LVTTL clock inputs.

IC Role / Device Role / Timing Role: Bridges incompatible signaling standards while preserving edge fidelity and minimizing setup/hold violations at the FPGA boundary.

Use Value: Eliminates need for discrete resistor networks or active repeaters, reducing BOM count and layout complexity in space-constrained FPGA carrier boards.

Industrial PLC Timing Module

Test Equipment Signal Conditioning

Use Scenario: Converting isolated LVDS encoder feedback signals into deterministic LVTTL pulses for real-time motion control logic in programmable logic controllers.

IC Role / Device Role / Timing Role: Provides galvanically isolated signal translation stage with guaranteed monotonic response and no false triggering under EMI stress.

Use Value: Delivers 24 mA drive strength to directly drive optocoupler inputs or Schmitt-triggered logic, avoiding additional buffer stages and associated propagation delays.

Use Scenario: Adapting high-speed test pattern generator outputs (LVPECL) to legacy LVTTL-based logic analyzers or protocol sniffers.

IC Role / Device Role / Timing Role: Acts as a standardized interface adapter that preserves signal rise/fall times (<600 ps) and minimizes added jitter (<10 ps RMS).

Use Value: Enables reuse of existing test infrastructure without modifying firmware or upgrading instrumentation-reducing validation cycle time and cost.

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
MC100EPT23DG	Pin-compatible, same SOIC-8 footprint; identical AC/DC specs but lacks internal open-input biasing and temperature compensation circuitry.	Requires external 50 kΩ pull-up/down resistors on unused inputs; less suitable for hot-swap or variable-temperature environments.	Select when legacy MC100EPT23 design reuse is mandatory and thermal drift is not a concern.
SN65LVDS32DR	LVDS-only receiver (no LVPECL support); 3.3 V LVTTL outputs; higher 3.5 ns propagation delay; no internal biasing.	Restricted to LVDS inputs only; unsuitable for mixed LVPECL/LVDS systems or applications requiring >250 MHz operation.	Choose only if input signal type is strictly LVDS and lower cost outweighs performance trade-offs.

Compared with MC100EPT23DG and SN65LVDS32DR, the SN65EPT23DGK provides broader input standard support (LVPECL + LVDS), integrated fail-safe biasing, tighter skew control, and superior thermal stability-making it the preferred choice for new designs demanding robustness and flexibility in high-speed timing interfaces.

Availability

SN65EPT23DGK is available at Aetrix Electronics and suitable for backplane clock distribution, FPGA I/O bridging, industrial PLC timing modules, and test equipment signal conditioning requiring stable component supply and long-term lifecycle assurance.

Supply support for SN65EPT23DGK 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 precision analog and high-speed interface solutions.

The SN65EPT23DGK belongs to TI's high-speed interface translator product line, engineered specifically for reliable, low-jitter signal level conversion in mission-critical timing and data transmission systems across industrial, communications, and test equipment markets.

FAQ

What is the maximum supported input voltage swing for SN65EPT23DGK?

The SN65EPT23DGK accepts differential input voltage swings from 150 mV to 1200 mV, covering both low-voltage LVDS and high-swing LVPECL standards. This range ensures full logic swing at the LVTTL outputs even at the minimum 150 mV input, as verified in the AC characteristics table of the SLLS969A datasheet.

Does SN65EPT23DGK require external biasing resistors on its differential inputs?

No, the SN65EPT23DGK includes internal 50 kΩ pull-up and pull-down resistors on each differential pair (D0/D0̅ and D1/D1̅), automatically biasing open inputs to VCC/2. This eliminates the need for external resistors and prevents undefined output states during hot-plug or initialization sequences.

What is the thermal resistance (θ_JA) of SN65EPT23DGK in its VSSOP-8 package?

In the VSSOP-8 (DGK) package, the SN65EPT23DGK has a junction-to-ambient thermal resistance (θ_JA) of 213°C/W under low-thermal-conductivity board conditions and 189°C/W under high-thermal-conductivity conditions, as specified in the Power Dissipation Ratings table of the datasheet.

Can SN65EPT23DGK operate with a 3.0 V supply voltage?

Yes, the SN65EPT23DGK is fully specified to operate across VCC = 3.0 V to 3.6 V. All key parameters-including propagation delay (2.0 ns typ), output drive (24 mA), and max frequency (300 MHz)-are guaranteed at 3.0 V, enabling compatibility with low-voltage industrial power rails.

Is SN65EPT23DGK pin-compatible with MC100EPT23?

Yes, the SN65EPT23DGK is explicitly documented as drop-in compatible with MC100EPT23, sharing identical pinout, function mapping, and electrical specifications. This allows direct substitution in existing designs without PCB changes or firmware updates.

SN65EPT23DGK Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 65EPT

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:: LVCMOS, 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-TSSOP, 8-MSOP (0.118", 3.00mm Width)

SN65EPT23DGK FAQ

1.How can I place an order for SN65EPT23DGK through Aetrix?

Please submit a Request for Quotation (RFQ) for SN65EPT23DGK 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 SN65EPT23DGK reliable?

The price and inventory of SN65EPT23DGK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN65EPT23DGK is usually 5 days.

3.What payment methods are accepted for SN65EPT23DGK?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN65EPT23DGK transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SN65EPT23DGK?

SN65EPT23DGK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN65EPT23DGK 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 SN65EPT23DGK?

For technical support, including SN65EPT23DGK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN65EPT23DGK requirements.

6.How does Aetrix verify that SN65EPT23DGK is sourced from the original manufacturer or authorized distributors?

All SN65EPT23DGK 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 SN65EPT23DGK meets industry standards.

7.What is the process for return or replacement of SN65EPT23DGK?

All SN65EPT23DGK units undergo pre-shipment inspection (PSI). If there is an issue with SN65EPT23DGK, 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 SN65EPT23DGK part is unused and in its original packaging.

Return procedure for SN65EPT23DGK:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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