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NXP Semiconductors GTL2005PW/G-T
- Part No.:
- GTL2005PW/G-T
- Manufacturer:
- NXP Semiconductors
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
GTL2005PW/G-T.pdf
- Description:
- IC TRANSLATOR BIDIR 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,608
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Product details
Overview
GTL2005PW/G-T from NXP Semiconductors is a quad GTL/GTL+ to LVTTL/TTL bidirectional non-latched translating transceiver, operating at 3.0–3.6 V with 5 V-tolerant B-side I/O, enabling interface between 3.3 V GTL/GTL+ buses and 5 V TTL/LVTTL logic in high-speed backplane or motherboard applications.
For engineers reviewing the GTL2005PW/G-T datasheet, GTL2005PW/G-T pinout, GTL2005PW/G-T application, or GTL2005PW/G-T equivalent, this device delivers sub-6 ns propagation delay (An→Bn), ±1 µA input leakage, 3.4–7.0 pF I/O capacitance, and robust ESD protection (2000 V HBM), critical for signal integrity in dense server and telecom board designs.
Technical Context
The GTL2005PW/G-T implements direction-controlled bidirectional translation using a non-latched 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). It supports three GTL variants-GTL− (Vref = 0.6 V), GTL (Vref = 0.8 V), and GTL+ (Vref = 1.0 V)-with corresponding VTH+ and VTH− thresholds varying per Vref setting.
VREF pin sets the GTL input threshold reference; linearity degrades below 0.8 V, requiring careful noise margin evaluation. The A-side (GTL) tolerates up to 7.0 V DC input, while B-side (TTL) inputs are rated to 5.5 V, and both sides support live insertion/extraction per JESD78 latch-up spec (>500 mA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 3.0 V to 3.6 V - ensures compatibility with standard 3.3 V system rails while allowing margin for supply variation |
| Propagation Delay (An→Bn) | 4.1–5.9 ns typ - enables >150 MHz bus operation with deterministic timing in GTL-to-TTL direction |
| Propagation Delay (Bn→An) | 2.1–2.6 ns typ - supports fast TTL sampling of GTL bus signals with minimal latency |
| I/O Capacitance (B port) | 6.0–7.0 pF - low loading preserves signal edge rate on TTL/LVTTL side, reducing reflections |
| ESD Protection (HBM) | 2000 V - meets JEDEC JESD22-A114 for handling robustness during board assembly and field service |
| Input Voltage Tolerance (B port) | 0 V to 5.5 V - allows direct connection to legacy 5 V TTL outputs without level-shifting circuitry |
| VREF Operating Range | 0.5 V to 1.8 V - configurable reference supports GTL−, GTL, and GTL+ standards via external bias network |
Pinout & Package
TSSOP14 package (SOT402-1), plastic thin shrink small outline, 14-lead, 4.4 mm body width, 0.65 mm pitch - optimized for high-density PCB layouts with thermal and mechanical reliability in reflow-soldered applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DIR (Pin 1) | Direction control input | Active-HIGH selects B→A (GTL sampling receiver); active-LOW selects A→B (TTL-to-GTL driver) |
| A0–A3 (Pins 2,3,5,6) | GTL-side I/O terminals | Interface directly with GTL/GTL+ bus; referenced to VREF; tolerate up to 7.0 V DC |
| B0–B3 (Pins 9,10,12,13) | TTL/LVTTL-side I/O terminals | 5 V-tolerant inputs/outputs; drive standard TTL loads with 12 mA sink capability |
| VREF (Pin 4) | GTL reference voltage input | Sets switching threshold for GTL inputs; must be externally biased; linearity degrades below 0.8 V |
| VCC (Pin 14) | Positive supply | 3.0–3.6 V power rail; supplies internal logic and output drivers; decoupling required near pin |
| GND (Pins 7,8,11) | Ground reference | Three dedicated ground pins minimize ground bounce across all four channels |
Key Features
| Feature | Design Value |
|---|---|
| Quad bidirectional GTL↔TTL translation | Single-package solution replaces four discrete translators, reducing BOM count and layout area by >60% |
| 5 V-tolerant LVTTL I/O | Eliminates need for external clamping diodes when interfacing with 5 V legacy peripherals or FPGAs |
| Live insertion/extraction support | Enables hot-swap capability in modular backplane systems without risk of latch-up or damage |
| Sub-6 ns An→Bn propagation delay | Meets timing budgets for 100+ MHz GTL bus clocking in server memory controllers and switch fabrics |
| JESD78 latch-up immunity (>500 mA) | Ensures robust operation under transient overvoltage or ESD events in industrial and telecom environments |
Applications
| Server Backplane Interface | Telecom Line Card Bus Translation |
|---|---|
Use Scenario: Interfacing GTL+ address/data bus of a high-speed ASIC to LVTTL control logic on a hot-pluggable line card. IC Role / Device Role / Timing Role: Bidirectional translator managing direction-controlled data flow between GTL+ (1.5 V Vref) and 3.3 V LVTTL domains with <6 ns An→Bn delay. Use Value: Enables seamless protocol bridging without timing closure issues, supporting 200+ MB/s throughput in packet forwarding engines. |
Use Scenario: Level-shifting between GTL− (0.6 V Vref) backplane signals and 5 V TTL FPGA configuration I/O on a modular telecom switch. IC Role / Device Role / Timing Role: Direction-controlled GTL− sampling receiver (DIR = HIGH) capturing synchronous bus states with 2.1 ns B→A delay. Use Value: Maintains signal integrity across mixed-voltage domains while meeting strict jitter and skew requirements for SONET/SDH timing interfaces. |
| High-Density Motherboard Signal Routing | Industrial PLC I/O Module Interface |
Use Scenario: Translating GTL bus signals from a CPU northbridge to LVTTL GPIO expanders on a compact ATX motherboard. IC Role / Device Role / Timing Role: Quad-channel non-latched translator providing independent A/B channel control with shared DIR pin for synchronous enable. Use Value: Reduces layer count and routing congestion versus discrete solutions, achieving 0.4 mm²/mm² footprint efficiency in 6-layer PCBs. |
Use Scenario: Isolating GTL+ sensor bus from 5 V TTL microcontroller I/O in an industrial programmable logic controller rack module. IC Role / Device Role / Timing Role: TTL-to-GTL driver (DIR = LOW) driving 40 mA into GTL+ termination with 0.4 V VOL at 12 mA load. Use Value: Provides noise-immune communication over long traces in electrically noisy factory environments, meeting IEC 61000-4-2 Class 3 ESD immunity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar GTL-to-TTL bidirectional translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GTL2014PW | Faster tPLH/tPHL (1.7–2.0 ns B→A); fixed GTL+ only (Vref = 1.0 V); no GTL−/GTL support | Better suited for high-frequency GTL+ links where Vref stability is guaranteed; not interchangeable if multi-standard Vref flexibility is required | Select GTL2014PW only when GTL+ is the sole standard used and sub-2 ns B→A delay is mandatory |
| SN74AVC4T245RGYR | 3.3 V only I/O (no 5 V tolerance); supports 1.2–3.6 V dual-supply translation; higher Cio (10.5 pF) | Applicable for modern low-voltage SoC interconnects but unsuitable for legacy 5 V TTL integration | Choose SN74AVC4T245RGYR for new designs with uniform 3.3 V domains and space-constrained QFN packaging |
Compared with GTL2005PW/G-T, GTL2014PW offers faster B→A timing but sacrifices Vref flexibility, while SN74AVC4T245RGYR provides broader voltage scalability at the cost of 5 V tolerance and higher capacitive loading-making GTL2005PW/G-T the optimal choice for mixed-voltage GTL infrastructure upgrades.
Availability
GTL2005PW/G-T is available at Aetrix Electronics and suitable for server backplane interfaces, telecom line card bus translation, and high-density motherboard signal routing requiring stable component supply across extended product lifecycles.
Supply support for GTL2005PW/G-T 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 company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and communications markets.
The GTL2005PW/G-T belongs to NXP's legacy GTL interface product line, designed specifically to bridge high-speed GTL/GTL+ backplane buses with mainstream TTL/LVTTL logic in enterprise computing and telecom infrastructure.
FAQ
What is the maximum recommended VREF voltage for stable operation of the GTL2005PW/G-T?
The GTL2005PW/G-T supports VREF from 0.5 V to 1.8 V, but linearity degrades below 0.8 V. For GTL operation (Vref = 0.8 V), the device maintains optimal VTH+ and VTH− thresholds across temperature. Using VREF < 0.8 V requires careful noise margin analysis; NXP recommends GTL2014 for applications needing lower VREF operation.
Can the GTL2005PW/G-T interface directly with 5 V TTL outputs without external components?
Yes, the GTL2005PW/G-T B-side inputs tolerate up to 5.5 V DC, allowing direct connection to standard 5 V TTL outputs. Its 5 V-tolerant LVTTL I/O eliminates the need for external clamping diodes or resistive dividers, simplifying design and improving reliability in mixed-voltage systems.
What is the propagation delay asymmetry between An→Bn and Bn→An directions in the GTL2005PW/G-T?
The GTL2005PW/G-T exhibits intentional asymmetry: Bn→An delay is 1.9–2.6 ns (fast path), while An→Bn delay is 4.1–5.9 ns (slower path). This reflects its dual-mode architecture-optimized for TTL sampling of GTL buses (fast B→A) and controlled GTL driving (slower A→B), aligning with GTL protocol timing requirements.
Does the GTL2005PW/G-T support live insertion in hot-swap backplane applications?
Yes, the GTL2005PW/G-T is explicitly qualified for live insertion/extraction per JESD78 latch-up testing (>500 mA), and its non-latched architecture prevents metastability during partial power-up. This makes it suitable for modular telecom and server backplanes where cards are inserted/removed under power.
How many ground pins does the GTL2005PW/G-T TSSOP14 package include, and why is this significant?
The GTL2005PW/G-T TSSOP14 package has three dedicated GND pins (Pins 7, 8, and 11), strategically placed to minimize ground loop inductance across all four bidirectional channels. This reduces simultaneous switching noise and improves signal integrity in high-speed GTL bus applications where return path impedance critically affects timing margins.
GTL2005PW/G-T 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/G-T FAQ
1.How can I place an order for GTL2005PW/G-T through Aetrix?
Please submit a Request for Quotation (RFQ) for GTL2005PW/G-T 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/G-T reliable?
The price and inventory of GTL2005PW/G-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GTL2005PW/G-T is usually 5 days.
3.What payment methods are accepted for GTL2005PW/G-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GTL2005PW/G-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GTL2005PW/G-T?
GTL2005PW/G-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GTL2005PW/G-T 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/G-T?
For technical support, including GTL2005PW/G-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GTL2005PW/G-T requirements.
6.How does Aetrix verify that GTL2005PW/G-T is sourced from the original manufacturer or authorized distributors?
All GTL2005PW/G-T 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/G-T meets industry standards.
7.What is the process for return or replacement of GTL2005PW/G-T?
All GTL2005PW/G-T units undergo pre-shipment inspection (PSI). If there is an issue with GTL2005PW/G-T, 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/G-T part is unused and in its original packaging.
Return procedure for GTL2005PW/G-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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