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NXP Semiconductors GTL2005PW/DG,118
- Part No.:
- GTL2005PW/DG,118
- Manufacturer:
- NXP Semiconductors
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
GTL2005PW/DG,118.pdf
- Description:
- IC TRANSLATOR BIDIR 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,820
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Product details
Overview
GTL2005PW/DG,118 from NXP Semiconductors is a quad bidirectional GTL/GTL+ to LVTTL/TTL translating transceiver designed for 3.3 V system interfacing with GTL/GTL+ buses. It operates from 3.0 V to 3.6 V, supports 5 V–tolerant LVTTL I/O, features propagation delays as low as 1.9 ns (B→A), and enables live insertion/extraction in high-density backplane or motherboard applications.
For engineers reviewing the GTL2005PW/DG,118 datasheet, GTL2005PW/DG,118 pinout, GTL2005PW/DG,118 application, or GTL2005PW/DG,118 equivalent, this device serves as a non-latched level-shifting interface between GTL/GTL+ signaling domains (e.g., CPU address/data buses) and 3.3 V/5 V TTL logic subsystems-critical for signal integrity in server memory controllers and telecom switching fabric.
Technical Context
The GTL2005PW/DG,118 implements a direction-controlled, non-latched translation architecture where DIR pin state determines data flow direction: HIGH enables GTL sampling receiver mode (B→A), LOW enables TTL-to-GTL driver mode (A→B). Its dual-voltage operation relies on separate VCC (3.3 V) and VTT/Vref (0.5–1.8 V) rails to maintain GTL threshold linearity across temperature and noise margins.
Each of its four bidirectional channels independently handles differential GTL input thresholds (VTH±) referenced to Vref, with guaranteed performance at Vref = 0.6 V (GTL−), 0.8 V (GTL), and 1.0 V (GTL+). The device includes robust ESD protection (2000 V HBM), latch-up immunity (>500 mA), and supports termination voltages up to 1.65 V for GTL+ compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 3.0 V to 3.6 V - Ensures stable operation across industrial-grade 3.3 V supply tolerances. |
| Input Voltage Tolerance (B port) | Up to 5.5 V - Allows direct connection to legacy 5 V TTL/CMOS outputs without external clamping. |
| tPHL / tPLH (B→A) | 1.9 ns / 2.1 ns typical - Enables sub-2 ns latency for high-speed GTL bus sampling in CPU cache coherency links. |
| tPHL / tPLH (A→B) | 4.4 ns / 4.1 ns typical - Matches GTL+ timing budgets when driving terminated backplane traces. |
| Vref Range | 0.5 V to 1.8 V - Supports configurable GTL−, GTL, and GTL+ standards via external reference setting. |
| ESD Protection | 2000 V HBM, 150 V MM, 1000 V CDM - Meets JEDEC standards for board-level handling and system-level surge resilience. |
| Operating Temperature | −40 °C to +85 °C - Qualified for use in telecom infrastructure and enterprise storage enclosures. |
Pinout & Package
TSSOP14 package (SOT402-1), plastic thin shrink small outline, 14-lead, body width 4.4 mm, lead pitch 0.65 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DIR (Pin 1) | Direction control input | Active-HIGH selects B→A GTL sampling; active-LOW selects A→B TTL driving - enables dynamic bus arbitration. |
| A0–A3 (Pins 2,3,5,6) | GTL-side I/O terminals | Interface directly with GTL/GTL+ bus lines; referenced to Vref for precise threshold control. |
| B0–B3 (Pins 13,12,10,9) | LVTTL/TTL-side I/O terminals | 5 V–tolerant inputs/outputs compatible with 3.3 V or 5 V logic families without level shifters. |
| VREF (Pin 4) | GTL reference voltage input | Sets GTL input thresholds (VTH±); must be externally supplied and decoupled for noise immunity. |
| VCC (Pin 14) | Positive supply voltage | Powers internal logic and output drivers; requires local 3.3 V regulation and 100 nF bypassing. |
| GND (Pins 7,8,11) | Ground reference | Three dedicated ground pins minimize ground bounce across all four channels during simultaneous switching. |
Key Features
| Feature | Design Value |
|---|---|
| Quad bidirectional translation | Four independent A↔B channels eliminate need for multiple discrete translators in multi-lane interconnects. |
| 5 V–tolerant LVTTL I/O | Enables seamless integration with legacy 5 V peripherals while powered from 3.3 V supply - reduces BOM count and power rail complexity. |
| Live insertion/extraction support | Allows hot-swap capability in modular backplanes without system reset or bus contention - critical for carrier-grade systems. |
| GTL−/GTL/GTL+ compatibility | Vref programmability (0.5–1.8 V) ensures interoperability across three GTL variants used in Intel Pentium Pro–to–Xeon generations. |
| Latch-up immunity >500 mA | Guarantees robustness against transient overvoltage events in noisy server environments per JESD78 Class II. |
Applications
| Server Memory Controller Interface | CPU Address/Data Bus Translation |
|---|---|
Use Scenario: Interfacing a 3.3 V memory controller ASIC to a GTL+ address bus on a dual-processor motherboard. IC Role / Device Role / Timing Role: Bidirectional level translator synchronizing CPU-initiated read/write cycles with DRAM timing windows. Use Value: Sub-5 ns A→B propagation delay preserves setup/hold timing margins for DDR2 SDRAM command decoding at 200 MHz. |
Use Scenario: Converting GTL− data signals from an Intel Pentium II processor to 3.3 V LVTTL for a PCI-X bridge ASIC. IC Role / Device Role / Timing Role: Sampling receiver translating GTL− bus states into clean TTL logic levels for downstream logic analysis. Use Value: 1.9 ns B→A tPHL enables accurate capture of 300 MHz GTL− data strobes without added clock skew. |
| Telecom Line Card Backplane Interface | Industrial PLC I/O Module Bus Isolation |
Use Scenario: Isolating GTL+ control signals between redundant switch fabric cards in a carrier-class router chassis. IC Role / Device Role / Timing Role: Direction-controlled bus interface enabling failover handshaking across hot-swappable line cards. Use Value: Live insertion support allows replacement of faulty line cards without powering down the entire chassis. |
Use Scenario: Level-shifting between a 5 V microcontroller's GPIO and a GTL-based fieldbus transceiver in an industrial automation module. IC Role / Device Role / Timing Role: TTL-to-GTL driver translating MCU command packets into GTL-compatible physical layer signals. Use Value: 5 V–tolerant B-port inputs eliminate external voltage dividers, reducing component count and PCB area by 30%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar GTL/GTL+ to TTL translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GTL2014PW,118 | Faster propagation delay (1.4 ns B→A), lower Vref minimum (0.4 V), but no 5 V–tolerant B-port inputs. | Better suited for high-frequency GTL+ sampling where speed dominates over mixed-voltage interfacing. | Select GTL2014PW,118 only if system uses exclusively 3.3 V TTL logic and requires <1.5 ns latency. |
| SN74GTL16616DGGR | 16-bit wide, 3.3 V–only I/O, higher channel count, but lacks 5 V tolerance and live-insertion support. | Targeted at dense parallel bus applications (e.g., DDR memory interfaces) where pin count efficiency outweighs voltage flexibility. | Choose SN74GTL16616DGGR when scaling beyond 4 channels and operating strictly within 3.3 V domain. |
Compared with GTL2005PW/DG,118, GTL2014PW,118 trades 5 V tolerance for improved speed in pure GTL+ sampling, while SN74GTL16616DGGR offers density at the cost of voltage flexibility and hot-swap capability-making GTL2005PW/DG,118 the optimal choice for mixed-voltage, field-replaceable systems.
Availability
GTL2005PW/DG,118 is available at Aetrix Electronics and suitable for server motherboard design, telecom line card development, and industrial PLC I/O modules requiring stable component supply across extended product lifecycles.
Supply support for GTL2005PW/DG,118 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
NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and communication markets, with core expertise in high-speed interface ICs and power-efficient logic.
The GTL2005PW/DG,118 belongs to NXP's legacy GTL translation product line, engineered specifically for backward-compatible interfacing between Intel-era GTL/GTL+ processor buses and modern 3.3 V logic subsystems.
FAQ
What is the maximum Vref voltage supported by the GTL2005PW/DG,118?
The GTL2005PW/DG,118 supports Vref up to 1.8 V per the recommended operating conditions table. Exceeding this value may degrade GTL input threshold linearity and increase timing uncertainty, particularly below 0.8 V where Vref-related noise margin erosion is documented. Always reference Figure 4–6 for VTH± vs. Vref curves across temperature.
Can the GTL2005PW/DG,118 interface directly with 5 V TTL outputs without external components?
Yes, the GTL2005PW/DG,118 B-port inputs tolerate up to 5.5 V, allowing direct connection to standard 5 V TTL or CMOS outputs. This eliminates the need for external voltage translators or clamping diodes in mixed-voltage systems, as confirmed by the absolute maximum ratings (VI ≤ +7.0 V on B port) and static characteristics tables.
What is the purpose of the three GND pins on the GTL2005PW/DG,118 TSSOP14 package?
The GTL2005PW/DG,118 allocates three dedicated GND pins (Pins 7, 8, and 11) to reduce ground impedance and suppress simultaneous switching noise across its four bidirectional channels. This layout minimizes crosstalk and maintains signal integrity during high-speed transitions, especially critical in GTL−/GTL+/TTL mixed-signal routing.
Does the GTL2005PW/DG,118 support GTL+ signaling at 1.5 V Vref?
Yes, the GTL2005PW/DG,118 explicitly supports GTL+ operation with Vref = 1.0 V (typical), and its recommended Vref range extends to 1.8 V. At Vref = 1.0 V, dynamic characteristics show tPLH/tPHL of 4.2 ns/3.8 ns (An→Bn), meeting GTL+ timing requirements for 200+ MHz backplane applications per the datasheet Table 8.
How does the DIR pin control data direction in the GTL2005PW/DG,118?
In the GTL2005PW/DG,118, the DIR pin is an active-HIGH control: when DIR = HIGH, the device functions as a GTL sampling receiver (data flows B→A); when DIR = LOW, it acts as a TTL-to-GTL driver (data flows A→B). This single-pin control enables dynamic bus arbitration without external logic, as defined in Table 4 (Function table).
GTL2005PW/DG,118 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Translator Type:
- Mixed Signal
- Channel Type:
- Bidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 4
- Voltage - VCCA:
- -
- Voltage - VCCB:
- -
- Input Signal:
- GTL
- Output Signal:
- LVTTL, TTL
- Output Type:
- Non-Inverted
- Data Rate:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-TSSOP (0.173", 4.40mm Width)
GTL2005PW/DG,118 FAQ
1.How can I place an order for GTL2005PW/DG,118 through Aetrix?
Please submit a Request for Quotation (RFQ) for GTL2005PW/DG,118 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 GTL2005PW/DG,118 reliable?
The price and inventory of GTL2005PW/DG,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GTL2005PW/DG,118 is usually 5 days.
3.What payment methods are accepted for GTL2005PW/DG,118?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GTL2005PW/DG,118 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GTL2005PW/DG,118?
GTL2005PW/DG,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GTL2005PW/DG,118 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 GTL2005PW/DG,118?
For technical support, including GTL2005PW/DG,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GTL2005PW/DG,118 requirements.
6.How does Aetrix verify that GTL2005PW/DG,118 is sourced from the original manufacturer or authorized distributors?
All GTL2005PW/DG,118 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 GTL2005PW/DG,118 meets industry standards.
7.What is the process for return or replacement of GTL2005PW/DG,118?
All GTL2005PW/DG,118 units undergo pre-shipment inspection (PSI). If there is an issue with GTL2005PW/DG,118, 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 GTL2005PW/DG,118 part is unused and in its original packaging.
Return procedure for GTL2005PW/DG,118:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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