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Texas Instruments SN65EPT23DR
- Part No.:
- SN65EPT23DR
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
SN65EPT23DR.pdf
- Description:
- IC TRANSLTR UNIDIRECTIONAL 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,274
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Product details
Overview
SN65EPT23DR from Texas Instruments is a dual 3.3 V differential LVPECL/LVDS-to-LVTTL/LVCMOS translator IC used for high-speed signaling level conversion in clock and data paths. It delivers 24 mA LVTTL outputs, supports >300 MHz operation, exhibits 2.0 ns typical propagation delay, and operates across –40°C to +85°C with VCC = 3.0–3.6 V. It is deployed in backplane clock distribution systems requiring precise timing integrity.
For engineers reviewing the SN65EPT23DR datasheet, SN65EPT23DR pinout, SN65EPT23DR application, or SN65EPT23DR equivalent, key selection criteria include differential input compatibility (LVPECL/LVDS/CML), LVTTL output drive strength, sub-2 ns propagation delay, thermal performance in SOIC-8, and drop-in compatibility with MC100EPT23 in legacy designs.
Technical Context
The SN65EPT23DR integrates two independent translation channels, each accepting differential LVPECL/LVDS/CML inputs and producing single-ended LVTTL/LVCMOS outputs. Input common-mode range spans 1.2 V to 3.3 V, and internal 50 kΩ pull-up/pull-down resistors maintain defined logic states on open inputs.
It features built-in temperature compensation to stabilize DC thresholds across –40°C to +85°C, and achieves <110 ps output-to-output skew (both ++ and ––) with 400 ps part-to-part skew. AC performance is validated up to 300 MHz switching frequency under full temperature and supply voltage range (3.0–3.6 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 3.0 V to 3.6 V - Ensures stable operation across industrial-grade supply tolerance and noise margin. |
| Max Switching Frequency | 300 MHz - Guarantees functional integrity for high-speed clock/data transmission in backplane applications. |
| Propagation Delay | 1.3 ns typical (tPLH/tPHL) - Enables tight timing budgets in synchronous systems with minimal added latency. |
| LVTTL Output Drive | 24 mA sink/source - Supports direct interfacing to standard TTL loads without external buffering. |
| Input Compatibility | LVPECL, LVDS, CML - Allows reuse of same device across multiple differential signaling standards without redesign. |
| Output Skew | 110 ps (Q0–Q1) - Maintains phase alignment between translated channels critical for parallel data paths. |
| Operating Temperature | –40°C to +85°C - Qualified for industrial and telecom infrastructure environments. |
Pinout & Package
SN65EPT23DR is housed in an industry-standard SOIC-8 package (D package), 3.91 mm × 4.90 mm, 1.75 mm max height, RoHS-compliant NiPdAu lead finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (D0) | Differential LVPECL/LVDS Input (non-inverting) | Accepts positive leg of differential pair; internally biased to VCC/2 when floating. |
| 2 (D0) | Differential LVPECL/LVDS Input (inverting) | Accepts negative leg; complements Pin 1 to reject common-mode noise. |
| 3 (D1) | Differential LVPECL/LVDS Input (non-inverting) | Second channel non-inverting input; electrically isolated from Channel 0. |
| 4 (D1) | Differential LVPECL/LVDS Input (inverting) | Second channel inverting input; enables dual independent translation paths. |
| 5 (GND) | Ground Reference | Primary return path for all internal circuitry and output drivers; must be low-impedance. |
| 6 (VCC) | Positive Supply | 3.0–3.6 V power rail; powers both input receivers and LVTTL output stages. |
| 7 (Q0) | LVTTL/LVCMOS Output | Single-ended output for Channel 0; VOH ≥ 2.4 V @ –3 mA, VOL ≤ 0.5 V @ 24 mA. |
| 8 (Q1) | LVTTL/LVCMOS Output | Single-ended output for Channel 1; matches Q0 electrical specs and timing behavior. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel translation | Enables simultaneous conversion of two independent differential clock or data streams in one SOIC-8 footprint. |
| Built-in input biasing | 50 kΩ internal pull-up/pull-down resistors eliminate need for external termination on unused or open inputs. |
| Temperature-compensated thresholds | Maintains consistent input switching points across –40°C to +85°C, preventing metastability in wide-temp systems. |
| Drop-in MC100EPT23 compatibility | Pin-for-pin and functionally compatible with legacy ECL translator, easing migration from older designs. |
| Low propagation delay variation | 2.0 ns typical tPD with <110 ps output skew ensures deterministic timing in multi-channel synchronization. |
Applications
| Backplane Clock Distribution | High-Speed Data Interface |
|---|---|
Use Scenario: Distributing a 200 MHz system clock across a 12-layer PCB backplane with >30 cm trace lengths and impedance discontinuities. IC Role / Device Role / Timing Role: Translates differential LVDS clock from FPGA to single-ended LVTTL for local ASIC clock inputs while preserving edge integrity. Use Value: 300 MHz capability and 2.0 ns tPD ensure setup/hold margins remain intact despite interconnect-induced jitter and skew. |
Use Scenario: Converting serialized sensor data from an LVDS image sensor to LVTTL-compatible FPGA I/O banks. IC Role / Device Role / Timing Role: Acts as a level-shifting bridge between high-noise-tolerance differential front-end and noise-sensitive digital processing domain. Use Value: 24 mA drive strength allows direct connection to FPGA inputs without series termination or additional buffers, reducing BOM count. |
| Telecom Line Card Timing | Industrial PLC Synchronization |
Use Scenario: Recovering and retiming a 156.25 MHz SONET clock from a line interface IC before feeding to multiple SERDES PLLs. IC Role / Device Role / Timing Role: Provides clean, low-skew LVTTL clock copies with matched propagation delay across dual outputs. Use Value: 110 ps Q0–Q1 skew and 400 ps part-to-part skew enable sub-nanosecond inter-chip clock alignment in multi-PLL architectures. |
Use Scenario: Interfacing a differential encoder signal (LVDS) from a servo motor to a microcontroller's GPIO pins rated for LVTTL. IC Role / Device Role / Timing Role: Converts robust differential position feedback into logic-level signals compatible with MCU interrupt-capable inputs. Use Value: Internal 50 kΩ biasing eliminates external resistors on encoder lines, simplifying layout and improving reliability in vibration-prone environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential-to-single-ended translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC100EPT23DG | 5 V ECL supply; higher power consumption; no internal biasing resistors; requires external termination. | Designed for legacy 5 V ECL systems; not suitable for 3.3 V-only designs or space-constrained layouts. | Select only if maintaining 5 V ECL infrastructure; SN65EPT23DR offers lower voltage, integrated biasing, and smaller footprint. |
| SN65LVDS32DR | LVDS receiver only (no LVTTL output stage); 3.3 V supply; 3 mA output drive; no differential input biasing. | Requires external LVTTL buffer stage; lacks integrated translation functionality; higher total solution complexity. | Choose only if differential receive-only function suffices; SN65EPT23DR provides complete level-shift+drive in one device. |
Compared with MC100EPT23DG and SN65LVDS32DR, the SN65EPT23DR uniquely combines 3.3 V operation, integrated biasing, 24 mA LVTTL drive, and dual-channel translation-reducing component count, board area, and design validation effort in modern industrial and telecom timing systems.
Availability
SN65EPT23DR is available at Aetrix Electronics and suitable for backplane clock distribution, high-speed data interface, telecom line card timing, and industrial PLC synchronization requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SN65EPT23DR 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 decades of expertise in high-speed interface and timing solutions.
The SN65EPT23DR belongs to TI's precision level translation product line, engineered specifically for reliable, low-skew conversion between differential signaling standards (LVPECL/LVDS/CML) and single-ended logic families (LVTTL/LVCMOS) in demanding industrial and communications infrastructure.
FAQ
What is the supply voltage range supported by the SN65EPT23DR?
The SN65EPT23DR operates over a VCC range of 3.0 V to 3.6 V, with absolute maximum rating of 3.8 V. This range ensures compatibility with standard 3.3 V systems while accommodating typical supply tolerances and ripple. Operation outside this range may cause functional failure or permanent damage, as specified in the Absolute Maximum Ratings table of the SN65EPT23DR datasheet.
Does the SN65EPT23DR require external termination resistors on its differential inputs?
No, the SN65EPT23DR does not require external termination resistors on D0/D0 or D1/D1 inputs because it includes internal 50 kΩ pull-up and pull-down resistors that bias open inputs to defined logic states. This feature simplifies PCB layout and reduces BOM cost, especially in applications where differential pairs may be unterminated or partially connected.
Can the SN65EPT23DR translate LVDS signals as well as LVPECL?
Yes, the SN65EPT23DR accepts both LVPECL and LVDS inputs - its differential input stage supports common-mode voltages from 1.2 V to 3.3 V and differential swings down to 150 mV, meeting LVDS electrical specifications. The SN65EPT23DR datasheet explicitly lists LVDS compatibility alongside LVPECL and CML in the Features and Pin Description sections.
What is the maximum guaranteed clock frequency for the SN65EPT23DR?
The SN65EPT23DR guarantees functional operation up to 300 MHz, as confirmed in the AC Characteristics table and Figures 1–3 of the SN65EPT23DR datasheet. This specification holds across the full operating temperature range (–40°C to +85°C) and supply voltage range (3.0–3.6 V), making it suitable for high-speed serial clock recovery and data forwarding applications.
Is the SN65EPT23DR pin-compatible with the MC100EPT23?
Yes, the SN65EPT23DR is drop-in compatible with the MC100EPT23 per TI's official documentation, sharing identical SOIC-8 pinout, signal mapping, and functional behavior. However, the SN65EPT23DR operates at 3.3 V (not 5 V), includes internal biasing, and offers improved thermal performance - enabling direct replacement in most legacy designs with minor supply voltage adjustment.
SN65EPT23DR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 65EPT
- 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:
- 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-SOIC (0.154", 3.90mm Width)
SN65EPT23DR FAQ
1.How can I place an order for SN65EPT23DR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN65EPT23DR 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 SN65EPT23DR reliable?
The price and inventory of SN65EPT23DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN65EPT23DR is usually 5 days.
3.What payment methods are accepted for SN65EPT23DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN65EPT23DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN65EPT23DR?
SN65EPT23DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN65EPT23DR 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 SN65EPT23DR?
For technical support, including SN65EPT23DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN65EPT23DR requirements.
6.How does Aetrix verify that SN65EPT23DR is sourced from the original manufacturer or authorized distributors?
All SN65EPT23DR 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 SN65EPT23DR meets industry standards.
7.What is the process for return or replacement of SN65EPT23DR?
All SN65EPT23DR units undergo pre-shipment inspection (PSI). If there is an issue with SN65EPT23DR, 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 SN65EPT23DR part is unused and in its original packaging.
Return procedure for SN65EPT23DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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