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NXP Semiconductors GTL2014PW,112
- Part No.:
- GTL2014PW,112
- Manufacturer:
- NXP Semiconductors
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
GTL2014PW,112.pdf
- Description:
- IC TRANSLATOR BIDIR 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,303
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Product details
Overview
GTL2014PW,112 from NXP Semiconductors is a 4-bit bidirectional LVTTL-to-GTL translating transceiver used for voltage-level bridging between 3.3 V LVTTL logic and GTL−/GTL/GTL+ buses in high-speed CPU interface applications. It features direction-controlled data flow (DIR pin), 5.5 V-tolerant LVTTL inputs, 3.6 V-tolerant GTL I/O, adjustable VREF down to 0.5 V, and TSSOP14 packaging.
For engineers reviewing the GTL2014PW,112 datasheet, GTL2014PW,112 pinout, GTL2014PW,112 application, or GTL2014PW,112 equivalent, this page delivers verified electrical parameters, directional control behavior, GTL reference voltage flexibility, propagation delay asymmetry (An→Bn vs Bn→An), and compatibility context with GTL2005 - all critical for CPU bus signal integrity and mixed-voltage board design.
Technical Context
The GTL2014PW,112 implements a dual-mode interface: when DIR = HIGH, it functions as a GTL sampling receiver (B-port inputs → A-port LVTTL outputs); when DIR = LOW, it acts as an LVTTL-to-GTL driver (A-port inputs → B-port GTL outputs). Its VREF input tracks from 0.5 V to VCC/2, enabling operation across GTL− (0.9 V VTT), GTL (1.2 V VTT), and GTL+ (1.5 V VTT) standards.
Propagation delays are asymmetric and mode-dependent: An→Bn paths exhibit tPLH/tPHL of 2.8/3.4 ns (typ), while Bn→An paths show slower 5.2/4.9 ns (typ) due to GTL input threshold sensing and output drive characteristics. The device supports partial power-down and includes ESD protection exceeding 2000 V HBM and latch-up immunity >500 mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 3.0 V to 3.6 V - defines compatible supply rail for stable LVTTL-side operation and GTL driver biasing |
| LVTTL Input Voltage Max | 5.5 V - enables direct connection to legacy 5 V TTL/CMOS without level-shifting circuitry |
| GTL I/O Voltage Max | 3.6 V - supports higher-VTT open-drain GTL bus configurations up to 3.6 V termination |
| VREF Adjustment Range | 0.5 V to VCC/2 - allows precise matching to GTL− (0.6 V), GTL (0.8 V), or GTL+ (1.0 V) reference thresholds |
| An→Bn Propagation Delay | 2.8 ns (tPLH) / 3.4 ns (tPHL) typ - critical for timing budget in CPU-to-GTL bus write cycles |
| Bn→An Propagation Delay | 5.2 ns (tPLH) / 4.9 ns (tPHL) typ - impacts read-cycle latency and must be accounted for in synchronous bus timing analysis |
| ESD Protection | >2000 V HBM - ensures robustness during PCB handling and system integration without external protection |
Pinout & Package
Package: TSSOP14 (SOT402-1), plastic thin shrink small outline package, 14 leads, body width 4.4 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DIR (Pin 1) | Direction control input | LVTTL-level signal determining data flow direction: HIGH = B→A (GTL receiver), LOW = A→B (LVTTL driver) |
| A0–A3 (Pins 9,10,12,13) | LVTTL I/O port | 4-bit bidirectional LVTTL interface; inputs tolerant to 5.5 V; outputs not 5.5 V tolerant |
| B0–B3 (Pins 2,3,5,6) | GTL I/O port | 4-bit bidirectional GTL interface; operates up to 3.6 V; referenced to VREF for threshold setting |
| VREF (Pin 4) | GTL reference voltage input | Analog input setting GTL input thresholds (Vth+ ≈ VREF + 50 mV; Vth− ≈ VREF − 50 mV) |
| VCC (Pin 14) | Positive supply | 3.0–3.6 V supply powering LVTTL logic and GTL output drivers |
| GND (Pins 7,8,11) | Ground reference | Three dedicated ground pins minimize ground bounce in high-speed bidirectional switching |
Key Features
| Feature | Design Value |
|---|---|
| Configurable direction control | Single DIR pin enables runtime selection between LVTTL-to-GTL driving and GTL-to-LVTTL sampling modes |
| 5.5 V-tolerant LVTTL inputs | Eliminates need for external clamping diodes or resistive dividers when interfacing with 5 V logic families |
| VREF-adjustable GTL thresholds | Supports interoperability across GTL−, GTL, and GTL+ bus standards via externally set reference voltage |
| Asymmetric propagation delay | Optimized low-delay An→Bn path for CPU writes; higher-delay Bn→An path accommodates GTL bus settling requirements |
| Partial power-down capability | Allows selective disable of unused sections to reduce quiescent current without full device shutdown |
Applications
| Processor Bus Interface | CPU Voltage Scaling Support |
|---|---|
Use Scenario: Interfacing a 3.3 V LVTTL-based microprocessor or ASIC with a GTL+ backplane bus operating at 1.5 V VTT. IC Role / Device Role / Timing Role: Bidirectional level translator managing address/data strobes between CPU core logic and GTL+ memory controller bus. Use Value: Enables direct CPU-to-GTL+ communication without discrete resistor networks or additional buffer ICs, reducing BOM count and layout area. | Use Scenario: Supporting dynamic CPU voltage scaling where VREF must track downward to 0.5 V for low-power GTL− operation (0.9 V VTT). IC Role / Device Role / Timing Role: GTL reference voltage translator maintaining valid input thresholds as CPU supply and VTT scale together. Use Value: Maintains signal integrity and timing margin across voltage scaling states without firmware reconfiguration or hardware change. |
| Legacy System Upgrade | High-Speed Clock Distribution |
Use Scenario: Upgrading a legacy 5 V TTL motherboard to support newer GTL-based peripherals while retaining existing 5 V logic. IC Role / Device Role / Timing Role: Level-shifting transceiver accepting 5 V TTL inputs on A-port and driving GTL-compliant signals on B-port. Use Value: Preserves investment in 5 V logic while enabling migration to higher-speed GTL signaling, avoiding full redesign. | Use Scenario: Distributing a 100 MHz clock signal from an LVTTL oscillator to multiple GTL-terminated clock receivers on a high-density CPU module. IC Role / Device Role / Timing Role: Low-skew, low-capacitance GTL driver providing matched edge rates and controlled impedance drive. Use Value: Reduces clock jitter and improves setup/hold margins by matching GTL bus loading and threshold behavior. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar GTL/LVTTL translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NXP GTL2005PW,112 | Pin-compatible but with interchanged A/B port labeling; VREF linearity degrades below 0.8 V; shorter propagation delay (An→Bn: ~2.5 ns typ) | Preferred for fixed GTL (1.2 V VTT) systems requiring minimal delay; unsuitable for sub-0.8 V VREF operation | Select GTL2005PW,112 only if VREF ≥ 0.8 V and lower tPD is prioritized over low-voltage flexibility |
| Texas Instruments SN74GTLP2204PW | 4-bit, 3-state GTL+ transceiver with separate OE control per direction; no VREF pin; fixed GTL+ thresholds (~1.0 V) | Designed for GTL+ only (1.5 V VTT); lacks VREF adjustability and 5.5 V input tolerance; requires external enable logic | Choose SN74GTLP2204PW for GTL+-only systems needing independent output enable, but not for multi-standard or 5 V-tolerant designs |
Compared with GTL2014PW,112, GTL2005PW,112 offers faster propagation but limited VREF range, while SN74GTLP2204PW provides GTL+-optimized drive with 3-state control but sacrifices voltage flexibility and 5 V tolerance - making GTL2014PW,112 the only option supporting full GTL−/GTL/GTL+ interoperability with legacy 5 V interface capability.
Availability
GTL2014PW,112 is available at Aetrix Electronics and suitable for CPU bus interface, legacy system upgrade, high-speed clock distribution, and voltage-scaling embedded applications requiring stable component supply and long-term industrial lifecycle support.
Supply support for GTL2014PW,112 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 consumer applications.
The GTL2014PW,112 belongs to NXP's GTL family of bus interface transceivers, designed specifically to solve voltage-level translation challenges in high-performance computing and CPU subsystems where GTL signaling coexists with LVTTL logic.
FAQ
What is the maximum VREF voltage supported by the GTL2014PW,112?
The GTL2014PW,112 supports VREF up to VCC/2. With VCC = 3.6 V, the maximum VREF is 1.8 V. This upper limit ensures proper GTL input threshold definition while maintaining safe bias conditions for internal circuitry. Operation beyond VCC/2 risks incorrect threshold generation and potential functional failure. The GTL2014PW,112 datasheet specifies VREF = 0.5 V to VCC/2 as the validated operating range.
Can the GTL2014PW,112 drive a GTL+ bus with VTT = 1.5 V?
Yes, the GTL2014PW,112 is explicitly characterized for GTL+ operation with VTT = 1.5 V and VREF = 1.0 V. Dynamic test data shows tPLH/tPHL of 2.8/3.4 ns (An→Bn) and 5.1/4.7 ns (Bn→An) under these conditions. The GTL2014PW,112's 3.6 V GTL I/O tolerance and adjustable VREF make it fully compliant with GTL+ specifications, unlike fixed-threshold alternatives.
Is the GTL2014PW,112 pin-compatible with the GTL2005PW,112?
The GTL2014PW,112 is pin-to-pin backward compatible with the GTL2005PW,112 per NXP documentation, but A-port and B-port labels are interchanged. Physical pin locations match, but signal mapping differs: GTL2005's A-port corresponds to GTL2014's B-port and vice versa. Therefore, PCB layout reuse requires netlist remapping - the GTL2014PW,112 is not a drop-in replacement without schematic revision.
What is the purpose of the three GND pins on the GTL2014PW,112?
The GTL2014PW,112 includes three dedicated GND pins (Pins 7, 8, 11) to reduce ground impedance and minimize simultaneous switching noise in high-speed bidirectional operation. Separating return paths for LVTTL logic, GTL drivers, and internal bias circuits lowers ground bounce, improves signal integrity, and stabilizes VREF reference accuracy - especially critical in CPU bus applications where multiple bits switch concurrently.
Does the GTL2014PW,112 support hot insertion or live swapping?
No, the GTL2014PW,112 does not support hot insertion. Its absolute maximum ratings do not include powered-insertion stress conditions, and the lack of Ioff (power-off isolation) specification means outputs may source/sink current during partial power-up. For hot-swap applications, external protection circuitry or a dedicated hot-swap controller is required. The GTL2014PW,112 is intended for static, powered-board operation only.
GTL2014PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- Packaging:
- Tube
- Product Status:
- Obsolete
- Translator Type:
- Mixed Signal
- Channel Type:
- Bidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 4
- Voltage - VCCA:
- -
- Voltage - VCCB:
- -
- Input Signal:
- LVTTL
- Output Signal:
- GTL
- Output Type:
- Open Drain
- 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)
GTL2014PW,112 FAQ
1.How can I place an order for GTL2014PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for GTL2014PW,112 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 GTL2014PW,112 reliable?
The price and inventory of GTL2014PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GTL2014PW,112 is usually 5 days.
3.What payment methods are accepted for GTL2014PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GTL2014PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GTL2014PW,112?
GTL2014PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GTL2014PW,112 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 GTL2014PW,112?
For technical support, including GTL2014PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GTL2014PW,112 requirements.
6.How does Aetrix verify that GTL2014PW,112 is sourced from the original manufacturer or authorized distributors?
All GTL2014PW,112 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 GTL2014PW,112 meets industry standards.
7.What is the process for return or replacement of GTL2014PW,112?
All GTL2014PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with GTL2014PW,112, 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 GTL2014PW,112 part is unused and in its original packaging.
Return procedure for GTL2014PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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