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Texas Instruments SN74GTL3004DCKR
- Part No.:
- SN74GTL3004DCKR
- Manufacturer:
- Texas Instruments
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
SN74GTL3004DCKR.pdf
- Description:
- IC TRANSLATOR UNIDIR SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
SN74GTL3004DCKR from Texas Instruments is a selectable GTL voltage reference IC designed for GTL/GTL+ bus termination in high-speed digital systems. It delivers four precision resistor-ratio outputs (0.615×, 0.63×, 0.65×, or 0.67× VTT) with ±1% resistor ratio tolerance, operates from 3.0 V to 3.6 V VDD and 1 V to 1.3 V VTT, and supports –40°C to 85°C ambient temperature - enabling robust signal integrity in server memory interfaces and backplane applications.
For engineers reviewing the SN74GTL3004DCKR datasheet, SN74GTL3004DCKR pinout, SN74GTL3004DCKR application, or SN74GTL3004DCKR equivalent, key selection criteria include GTL_REF accuracy under load, S0/S1 glitch immunity, VTT supply range compliance, thermal performance in SC70 packaging, and compatibility with GTL+ signaling standards requiring stable 0.6–0.7× VTT references.
Technical Context
The SN74GTL3004DCKR integrates five on-die resistors and control logic to generate a programmable GTL reference voltage from VTT, selected via two CMOS-compatible inputs (S0, S1). Its internal resistor network achieves precise ratios without external components, and built-in 100-kΩ pullups ensure default 0.67× VTT operation when inputs float.
It features glitch-suppression circuitry on S0/S1 inputs for noise immunity in electrically noisy environments, and meets JESD-22 ESD ratings of 2500-V HBM, 250-V MM, and 1500-V CDM - confirming suitability for board-level integration in industrial and telecom infrastructure where transient resilience is critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VDD Range | 3.0 V to 3.6 V - powers internal logic and ensures compatibility with 3.3-V system rails |
| VTT Range | 1.0 V to 1.3 V - defines valid termination voltage input for GTL bus compliance |
| GTL_REF Ratios | 0.615×, 0.63×, 0.65×, or 0.67× VTT - four discrete, resistor-based reference levels for GTL+ signaling |
| Resistor Ratio Tolerance | ±1% - guarantees tight VREF accuracy without calibration or trimming |
| Ambient Temperature Range | –40°C to +85°C - supports operation in extended industrial environments |
| ESD Protection | 2500-V HBM, 250-V MM, 1500-V CDM - exceeds JEDEC requirements for handling and board assembly |
| Package Thermal Impedance | 259 °C/W (θJA, DCK) - informs thermal design margin for continuous operation at full load |
Pinout & Package
SN74GTL3004DCKR uses the SC70-6 (DCK) package: 1.8 mm × 2.4 mm, 0.65 mm pitch, 1.1 mm max height, JEDEC MO-203 AB compliant, with exposed metal not present. Pin 1 is marked by an index area in quadrant Q3 per tape orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VDD) | Power supply input | Supplies 3.0–3.6 V to internal logic and resistor network |
| 2 (GND) | Ground reference | Return path for all internal currents and reference stability |
| 3 (S0) | Selection input | LSB control for GTL_REF ratio; 100-kΩ internal pullup defaults to HIGH |
| 4 (S1) | Selection input | MSB control for GTL_REF ratio; 100-kΩ internal pullup defaults to HIGH |
| 5 (VTT) | Termination voltage input | Source for GTL_REF generation; must be stable 1.0–1.3 V |
| 6 (GTL_REF) | Programmable reference output | Delivers selected ratio × VTT; drives GTL bus termination networks |
Key Features
| Feature | Design Value |
|---|---|
| Selectable GTL reference ratios | Four factory-trimmed resistor ratios (0.615× to 0.67× VTT) enable precise GTL+ bus matching without external dividers |
| Glitch-suppressed S0/S1 inputs | Internal filtering prevents erroneous ratio changes during noise events - critical for hot-swap and dynamic reconfiguration |
| 100-kΩ internal pullups | Ensures safe default 0.67× VTT operation when S0/S1 are unconnected or floating - simplifies layout and reduces BOM count |
| ±1% resistor ratio tolerance | Eliminates need for post-manufacture calibration or trimming in production - improves yield and long-term stability |
Applications
| Server Memory Interfaces | Backplane Data Links |
|---|---|
Use Scenario: DDR2/DDR3 memory subsystems using GTL+ signaling for address/control buses in rack-mounted servers. IC Role / Device Role / Timing Role: Provides stable, programmable GTL reference voltage for parallel bus termination networks. Use Value: Enables consistent signal thresholding across temperature and voltage variation, reducing timing skew and improving setup/hold margins. | Use Scenario: High-speed parallel backplanes in telecom switching fabric where GTL signaling maintains signal integrity over 10+ inch traces. IC Role / Device Role / Timing Role: Generates matched GTL_REF for multiple line drivers/receivers on shared backplane segments. Use Value: Maintains impedance-controlled reference alignment across distributed nodes, minimizing reflection-induced jitter. |
| Industrial PLC I/O Modules | Test Equipment Bus Interfaces |
Use Scenario: Programmable logic controller modules interfacing with legacy GTL-based sensor/actuator cards in harsh factory environments. IC Role / Device Role / Timing Role: Supplies ruggedized GTL reference under wide temperature and ESD stress conditions. Use Value: Delivers reliable bus termination despite voltage ripple and electrical noise - reducing communication errors in real-time control loops. | Use Scenario: Automated test equipment (ATE) systems using GTL buses to communicate with DUTs requiring precise voltage thresholds. IC Role / Device Role / Timing Role: Provides calibrated, low-drift GTL_REF for accurate level-sensitive stimulus/response validation. Use Value: Ensures repeatable pass/fail decisions across thousands of test cycles by maintaining reference stability within ±1%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar GTL reference generator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74GTL2003DCKR | Fixed 0.65× VTT ratio only; no S0/S1 select inputs; same DCK package and VDD/VTT ranges | Suitable only where single-ratio reference suffices; lacks programmability for multi-standard systems | Choose when GTL bus configuration is static and cost reduction is prioritized over flexibility |
| MAX9959EUA+ | Adjustable 0.5–0.8× VTT via external resistor divider; higher VTT range (1.2–3.6 V); µMAX-8 package | Supports wider VTT and non-GTL protocols; requires external components and PCB area | Choose when VTT exceeds 1.3 V or when fine-tuning beyond four discrete ratios is required |
Compared with SN74GTL3004DCKR, SN74GTL2003DCKR offers lower cost but no ratio selection, while MAX9959EUA+ provides analog adjustability at the expense of added complexity and larger footprint - making SN74GTL3004DCKR optimal for space-constrained, multi-standard GTL+ designs needing guaranteed ±1% ratio accuracy.
Availability
SN74GTL3004DCKR is available at Aetrix Electronics and suitable for server memory interfaces, backplane data links, and industrial PLC I/O modules requiring stable component supply, consistent GTL reference accuracy, and long-lifecycle availability.
Supply support for SN74GTL3004DCKR 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 company headquartered in Dallas, Texas, delivering analog, embedded processing, and logic solutions for industrial, automotive, and communications markets.
The SN74GTL3004DCKR belongs to TI's GTL interface logic family, engineered specifically to simplify high-speed parallel bus termination in memory and interconnect subsystems where precise, low-drift reference voltages are essential.
FAQ
What is the default GTL_REF ratio for SN74GTL3004DCKR when S0 and S1 are left unconnected?
When both S0 and S1 pins are left floating, internal 100-kΩ pullup resistors set them HIGH, selecting the 0.67× VTT ratio as the default GTL_REF output. This behavior is confirmed in the function table and logic diagram of the SN74GTL3004DCKR datasheet, and applies across the full operating temperature range.
Does SN74GTL3004DCKR require external resistors to set the GTL_REF voltage?
No, SN74GTL3004DCKR does not require external resistors. All five resistors used to generate the four GTL_REF ratios are integrated on-die with ±1% ratio tolerance. The device uses only VDD, GND, VTT, S0, S1, and GTL_REF connections - eliminating external component count and layout sensitivity.
What is the maximum allowable VTT voltage for reliable operation of SN74GTL3004DCKR?
The recommended operating condition for VTT is 1.0 V to 1.3 V. While absolute maximum rating allows up to 4.6 V, exceeding 1.3 V violates the specified GTL+ signaling standard and degrades GTL_REF accuracy - the SN74GTL3004DCKR is characterized and guaranteed only within the 1.0–1.3 V range.
Can SN74GTL3004DCKR drive multiple GTL bus termination networks simultaneously?
SN74GTL3004DCKR specifies GTL_REF output current capability of 0–10 µA. It is intended to drive the high-impedance reference input of GTL line receivers, not termination resistors directly. For driving multiple receiver reference inputs, verify total load remains ≤10 µA; additional buffering may be needed for >10 receivers.
Is SN74GTL3004DCKR RoHS-compliant and lead-free?
Yes, SN74GTL3004DCKR is RoHS-compliant and features NiPdAu (NIPDAU) lead finish. Per TI's Packaging Information Addendum, it carries "Yes" for RoHS and "Level-1-260C-UNLIM" MSL rating - confirming full compliance with EU RoHS Directive 2011/65/EU and suitability for standard Pb-free reflow processes.
SN74GTL3004DCKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74GTL
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Translator Type:
- Voltage Level
- Channel Type:
- Unidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 1
- Voltage - VCCA:
- 1 V ~ 1.3 V
- Voltage - VCCB:
- 3 V ~ 3.6 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Non-Inverted
- Data Rate:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- GTL Voltage Reference
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TSSOP, SC-88, SOT-363
SN74GTL3004DCKR FAQ
1.How can I place an order for SN74GTL3004DCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74GTL3004DCKR 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 SN74GTL3004DCKR reliable?
The price and inventory of SN74GTL3004DCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74GTL3004DCKR is usually 5 days.
3.What payment methods are accepted for SN74GTL3004DCKR?
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SN74GTL3004DCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74GTL3004DCKR 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 SN74GTL3004DCKR?
For technical support, including SN74GTL3004DCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74GTL3004DCKR requirements.
6.How does Aetrix verify that SN74GTL3004DCKR is sourced from the original manufacturer or authorized distributors?
All SN74GTL3004DCKR 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 SN74GTL3004DCKR meets industry standards.
7.What is the process for return or replacement of SN74GTL3004DCKR?
All SN74GTL3004DCKR units undergo pre-shipment inspection (PSI). If there is an issue with SN74GTL3004DCKR, 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 SN74GTL3004DCKR part is unused and in its original packaging.
Return procedure for SN74GTL3004DCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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