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NXP Semiconductors GTL2003BQ,115
- Part No.:
- GTL2003BQ,115
- Manufacturer:
- NXP Semiconductors
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
GTL2003BQ,115.pdf
- Description:
- IC TRANSLATOR BIDIR 20DHVQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,671
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Product details
Overview
GTL2003BQ,115 from NXP Semiconductors is an 8-bit bidirectional NMOS pass-transistor voltage translator IC enabling seamless level shifting between 0.8 V and 5.0 V buses without direction control. It features 6.5 Ω typical ON-state resistance, <5.5 ns propagation delay, and operates across −40 °C to +85 °C. It is used in I²C-bus interface translation between low-voltage processors (e.g., 1.2 V/1.8 V) and 3.3 V/5.0 V peripherals.
For engineers reviewing the GTL2003BQ,115 datasheet, GTL2003BQ,115 pinout, GTL2003BQ,115 application, or GTL2003BQ,115 equivalent, key selection criteria include bidirectional operation without direction pin, reference voltage programmability (SREF), DHVQFN20 thermal-enhanced package compatibility, and ESD robustness (2000 V HBM).
Technical Context
The GTL2003BQ,115 implements Gunning Transceiver Logic (GTL)-TVC architecture using eight matched NMOS pass transistors plus a dedicated reference transistor (SREF/DREF/GREF). Translation direction is determined dynamically by relative voltage levels on Sn and Dn ports, eliminating need for external direction logic.
Its operation relies on gate biasing: GREF must be ≥1.5 V above SREF for optimal clamping; SREF sets the upper output voltage limit on Sn side, while Dn outputs are pulled to VDD1. All transistors share identical electrical characteristics, ensuring ≤±0.1 V inter-channel voltage deviation and minimal propagation delay mismatch.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| ON-state resistance | 6.5 Ω typical at VGREF = 4.5 V - enables low-voltage-drop bidirectional signal coupling with <350 mV VOL at 15 mA |
| Propagation delay | 1.5 ns typical (tPLH/tPHL) - supports >200 MHz I²C-bus and GTL+ timing-critical interfaces |
| Voltage translation range | 0.8 V ↔ 5.0 V bidirectional - covers GTL, GTL+, LVTTL/TTL, and 5 V CMOS logic families |
| ESD protection | 2000 V HBM, 1000 V CDM - protects downstream 0.8–1.8 V processor I/O from system-level ESD events |
| Operating temperature | −40 °C to +85 °C - qualified for industrial and embedded computing environments |
| Supply requirement | No VDD required - operates passively using only external pull-up resistors and reference bias (SREF) |
| Input tolerance | 5 V tolerant on all Sn/Dn pins - allows safe interfacing with higher-voltage buses without clamping diodes |
Pinout & Package
DHVQFN20 package (SOT764-1): 2.5 × 4.5 × 0.85 mm body with exposed thermal pad; requires soldering of center pad to PCB ground plane for thermal and electrical integrity.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Die supply ground - must connect to system ground; exposed pad is electrically tied to Pin 1 |
| 2 | SREF | Source of reference transistor - sets maximum output voltage on Sn side (e.g., 1.2 V or 1.8 V) |
| 3–10 | S1–S8 | Low-voltage-side source terminals - connect to 0.8–1.8 V processor I/O (e.g., CPU core bus) |
| 11–18 | D8–D1 | High-voltage-side drain terminals - connect to 3.3 V/5.0 V peripheral buses (e.g., I²C pull-ups) |
| 19 | DREF | Drain of reference transistor - tied to VDD1 via 200 kΩ pull-up for stable gate bias |
| 20 | GREF | Gate of reference transistor - controls conduction state of all eight pass transistors |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional translation without direction pin | Enables zero-latency, automatic voltage domain handshaking - eliminates FPGA/CPLD GPIO overhead and timing skew |
| Flow-through pinout (S1–S8 left, D8–D1 right) | Supports straight PCB trace routing across layers - reduces crosstalk and simplifies high-density layout |
| Matched transistor array | Ensures ≤0.1 V inter-channel output voltage deviation - critical for parallel bus translation (e.g., multi-bit I²C data/address) |
| Hot-insertion support | Prevents latch-up during live backplane insertion - no power supply sequencing required |
| Reference transistor flexibility | SREF/DREF/GREF can be sourced from any Sn/Dn pair - allows board-level optimization of reference placement |
Applications
| I²C-Bus Voltage Translation | GTL/GTL+ to LVTTL Interface |
|---|---|
|
Use Scenario: Connecting a 1.2 V ARM Cortex-A series SoC's I²C controller to 3.3 V sensors and EEPROMs in industrial automation systems. IC Role / Device Role / Timing Role: Bidirectional voltage clamp translating SDA/SCL signals while preserving open-drain behavior and timing integrity. Use Value: Eliminates need for dual-supply buffers or direction-controlled translators - reduces BOM count and PCB area by 40% vs discrete MOSFET solutions. |
Use Scenario: Interfacing legacy GTL+ memory subsystems (1.2 V swing) with modern LVTTL-based memory controllers (3.3 V) in telecom baseband boards. IC Role / Device Role / Timing Role: Level-shifting driver maintaining sub-2 ns propagation delay and <350 mV VOL for reliable setup/hold timing. Use Value: Enables drop-in migration from GTL to LVTTL without redesigning clock tree or adding timing margin compensation. |
| Processor Core-to-Peripheral Bridge | Multi-Voltage System Integration |
|
Use Scenario: Isolating 0.8 V AI accelerator core I/O from 5.0 V PCIe switch management interfaces in edge inference modules. IC Role / Device Role / Timing Role: ESD-hardened passive translator protecting sensitive low-Vt transistors from 5 V bus transients. Use Value: Provides 2000 V HBM protection without degrading signal rise time - avoids need for external TVS diodes per line. |
Use Scenario: Consolidating mixed-voltage I/O (0.9 V, 1.5 V, 2.5 V, 3.3 V) onto single motherboard in modular server backplanes. IC Role / Device Role / Timing Role: Configurable reference node (SREF) allowing one GTL2003BQ,115 to serve multiple voltage domains via resistor-divider biasing. Use Value: Reduces component count by 67% compared to fixed-ratio translators - simplifies inventory and design reuse. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bidirectional voltage translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NVT2003DP,118 | Lower Ron (4.5 Ω typ), but requires VCC supply and has no exposed thermal pad | Not suitable for ultra-low-power or thermally constrained designs where passive operation is mandatory | Select GTL2003BQ,115 when supply-free operation, thermal pad integration, or legacy GTL compatibility is required |
| PCA9306DCUR | Auto-direction sensing, 2-channel, 1.2–3.6 V translation only; no 5 V tolerance | Limited to I²C applications below 3.6 V - cannot replace GTL2003BQ,115 in 5 V tolerant or wide-range GTL+ systems | Choose GTL2003BQ,115 for 0.8–5.0 V coverage, 5 V-tolerant inputs, and 8-channel density in space-constrained layouts |
Compared with NVT2003DP,118 and PCA9306DCUR, the GTL2003BQ,115 uniquely combines supply-free operation, 5 V input tolerance, DHVQFN20 thermal performance, and full 0.8–5.0 V bidirectional translation - making it the only option for industrial I²C bridges requiring latch-up immunity and extended voltage range.
Availability
GTL2003BQ,115 is available at Aetrix Electronics and suitable for industrial automation, telecom infrastructure, and embedded computing applications requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for GTL2003BQ,115 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 IoT markets, with over 50 years of analog and mixed-signal IP heritage.
The GTL2003BQ,115 belongs to NXP's GTL-TVC family, engineered specifically for high-speed, supply-free bidirectional voltage translation in multi-rail digital systems - targeting processor-to-peripheral bridging in space- and power-constrained embedded platforms.
FAQ
What is the minimum operating voltage for SREF on the GTL2003BQ,115?
The GTL2003BQ,115 supports SREF down to 0.8 V, enabling direct interface with sub-1 V processor I/O such as 0.8 V ARM cores. Operation below 0.8 V is possible with proper external biasing, but not guaranteed per datasheet specifications. The GTL2003BQ,115 must maintain SREF ≥ (VDREF − 1.5 V) for reliable clamping behavior.
Does the GTL2003BQ,115 require a power supply to function?
No - the GTL2003BQ,115 operates passively without VDD. It uses external pull-up resistors on the Dn side and a user-defined SREF bias to establish translation thresholds. This eliminates power sequencing complexity and prevents latch-up, making the GTL2003BQ,115 ideal for hot-plug and ultra-low-power systems.
Can the GTL2003BQ,115 translate between 5.0 V and 1.8 V bidirectionally?
Yes - the GTL2003BQ,115 is explicitly rated for bidirectional translation across 0.8 V to 5.0 V. When translating 5.0 V ↔ 1.8 V, set SREF = 1.8 V and tie GREF/DREF to 5.0 V via 200 kΩ. The GTL2003BQ,115 ensures Sn outputs never exceed 1.8 V while Dn outputs reach full 5.0 V through external pull-ups.
What is the purpose of the exposed thermal pad on the GTL2003BQ,115 DHVQFN20 package?
The exposed thermal pad on the GTL2003BQ,115 is electrically connected to Pin 1 (GND) and provides critical thermal dissipation and ground integrity. It must be soldered to a PCB thermal pad with ≥4 thermal vias to maintain junction temperature <150 °C under 64 mA per channel. Omitting this compromises reliability and ESD performance of the GTL2003BQ,115.
How does the GTL2003BQ,115 handle ESD protection for connected low-voltage devices?
The GTL2003BQ,115 provides inherent ESD protection exceeding 2000 V HBM and 1000 V CDM on all Sn/Dn pins. Its NMOS pass-transistor structure shunts transient current to GND through controlled avalanche paths, shielding downstream 0.8–1.8 V devices without external components - a key advantage over discrete MOSFET translators.
GTL2003BQ,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Translator Type:
- Voltage Level
- Channel Type:
- Bidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 8
- Voltage - VCCA:
- 0.8 V ~ 5.5 V
- Voltage - VCCB:
- 0.8 V ~ 5.5 V
- Input Signal:
- -
- Output Signal:
- -
- Output Type:
- Open Drain
- Data Rate:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- Auto-Direction Sensing
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-VFQFN Exposed Pad
GTL2003BQ,115 FAQ
1.How can I place an order for GTL2003BQ,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for GTL2003BQ,115 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 GTL2003BQ,115 reliable?
The price and inventory of GTL2003BQ,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GTL2003BQ,115 is usually 5 days.
3.What payment methods are accepted for GTL2003BQ,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GTL2003BQ,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GTL2003BQ,115?
GTL2003BQ,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GTL2003BQ,115 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 GTL2003BQ,115?
For technical support, including GTL2003BQ,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GTL2003BQ,115 requirements.
6.How does Aetrix verify that GTL2003BQ,115 is sourced from the original manufacturer or authorized distributors?
All GTL2003BQ,115 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 GTL2003BQ,115 meets industry standards.
7.What is the process for return or replacement of GTL2003BQ,115?
All GTL2003BQ,115 units undergo pre-shipment inspection (PSI). If there is an issue with GTL2003BQ,115, 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 GTL2003BQ,115 part is unused and in its original packaging.
Return procedure for GTL2003BQ,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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