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NXP Semiconductors GTL2107PW,112
- Part No.:
- GTL2107PW,112
- Manufacturer:
- NXP Semiconductors
- Category:
- Translators, Level Shifters
- Package:
- Datasheet:
-
GTL2107PW,112.pdf
- Description:
- IC TRANSLATOR UNIDIR 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,738
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Product details
Overview
GTL2107PW,112 from NXP Semiconductors is a 12-bit bidirectional GTL−/GTL/GTL+ to LVTTL voltage-level translator IC designed for inter-processor signaling between dual Xeon CPUs and platform health management subsystems. It supports 3.0–3.6 V operation, features dual enable inputs (EN1/EN2), provides open-drain and push-pull LVTTL I/O, and operates across GTL family standards with Vref-adjustable thresholds. It is deployed in server motherboard CPU interface circuits for SMI_L, NMI, PROCHOT_L, and THRMTRIP_L signal translation.
For engineers reviewing the GTL2107PW,112 datasheet, GTL2107PW,112 pinout, GTL2107PW,112 application, or GTL2107PW,112 equivalent, this page delivers verified functional role, propagation delay specs (e.g., 1–8 ns tPLH for nA→nBI), GTL/LVTTL voltage domain mapping, TSSOP28 package constraints, and validated alternative translators for server platform design-in.
Technical Context
The GTL2107PW,112 implements asymmetric bidirectional translation: GTL-side inputs (e.g., 1BI–2BI, 5BI–6BI, 11BI) drive LVTTL outputs (1AO–2AO, 5A–6A, 11A), while select LVTTL inputs (10AI1/10AI2, 9BI) control GTL outputs (10BO1/10BO2, 9AO). Its EN1/EN2 enables per-channel gating with built-in delay on 7BO1/7BO2 to suppress glitches during 5A/6A transition lag.
It supports three GTL voltage modes (GTL−: VTT = 0.9 V, Vref = 0.6 V; GTL: VTT = 1.2 V, Vref = 0.8 V; GTL+: VTT = 1.5 V, Vref = 1.0 V), includes 30 Ω series termination on LVTTL outputs, and meets JEDEC JESD78 Class II latch-up (>500 mA) and JESD22 ESD ratings (2000 V HBM, 150 V MM, 1000 V CDM).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Function | 12-bit GTL−/GTL/GTL+ to LVTTL bidirectional translator with mixed open-drain and push-pull outputs |
| Supply Voltage | 3.0–3.6 V - defines compatible LVTTL logic domain and ensures stable internal biasing for GTL threshold generation |
| Propagation Delay | 1–8 ns (tPLH/tPHL, nA→nBI) - enables high-speed CPU-to-Southbridge handshaking at multi-MHz rates without timing violation |
| Vref Range | 0.5–1.8 V (adjustable per GTL mode) - sets GTL input switching threshold relative to VTT, critical for noise margin in high-speed bus environments |
| Output Drive | LVTTL outputs: 16 mA sink (A port), 15 mA sink (B port); 9AO push-pull, others open-drain - determines external pull-up selection and fanout capability |
| ESD Rating | 2000 V HBM, 150 V MM, 1000 V CDM - qualifies for handling in automated server board assembly without special ESD controls |
| Operating Temp | −40 °C to +85 °C - supports industrial-grade server motherboard thermal profiles including near-CPU zones |
Pinout & Package
TSSOP28 (SOT361-1): plastic thin shrink small outline package, 28-pin, 4.4 mm body width, 0.65 mm pitch - optimized for high-density server PCB layouts with thermal and routing constraints.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VREF (1) | GTL reference voltage input | Sets input threshold for all GTL-side pins; must be externally biased to ⅔×VTT for correct GTL logic interpretation |
| 1AO–4AO, 9AO (2–4, 10–11, 15) | LVTTL output | 1AO–4AO and 10BO1/10BO2 are open-drain; 9AO is push-pull - dictates external pull-up requirements and active-drive capability |
| 5A/6A/11A (4–5, 8) | LVTTL input/output (open-drain) | Bidirectional paths with enable-controlled directionality; require external pull-ups for HIGH-state assertion |
| 1BI–2BI, 3BI–4BI, 5BI–6BI, 9BI, 11BI (27–26, 19–18, 21–20, 9, 7) | GTL input | Accept GTL−/GTL/GTL+ signals; referenced to VREF and VTT - not TTL-compatible without translation |
| 7BO1/7BO2, 10BO1/10BO2, 11BO (25–24, 17–16, 22) | GTL output | Drive GTL buses directly; require proper VTT termination (56 Ω) and VREF biasing for signal integrity |
| EN1/EN2 (6, 23) | LVTTL enable input | Gate translation channels independently; EN2 includes intentional delay to prevent 7BO1/7BO2 glitches during 5A/6A transitions |
| VCC (28), GND (14) | Power supply | Single 3.3 V supply; decoupling required within 10 mm of VCC/GND pins to maintain noise immunity in high-speed operation |
Key Features
| Feature | Design Value |
|---|---|
| Dual-mode GTL compatibility | Supports GTL− (0.9 V), GTL (1.2 V), and GTL+ (1.5 V) VTT levels with corresponding Vref settings - eliminates need for separate translators in multi-standard platforms |
| Glitch-suppressed enable logic | EN2 delay prevents transient LOW glitches on 7BO1/7BO2 when 5BI/6BI rise before 5A/6A - ensures reliable PROCHOT_L assertion in thermal emergency sequences |
| Integrated 30 Ω series termination | On all LVTTL outputs - reduces ringing and overshoot on short traces to Southbridge or power supervisor, easing layout for >100 MHz edge rates |
| High ESD robustness | 2000 V HBM, 150 V MM, 1000 V CDM - sustains handling and rework in high-volume server manufacturing without yield loss |
| JEDEC latch-up immunity | Class II, Level A (>500 mA) - guarantees survival under transient overvoltage events common in CPU power rail switching |
Applications
| CPU Thermal Management Interface | Platform Health Monitoring |
|---|---|
|
Use Scenario: Translating PROCHOT_L and THRMTRIP_L signals between dual Xeon processors and platform health controller. IC Role / Device Role / Timing Role: Bidirectional level shifter enabling real-time thermal throttle coordination across voltage domains. Use Value: Sub-10 ns propagation delay ensures immediate CPU throttling response, preventing thermal runaway during sustained load. |
Use Scenario: Routing SMI_L and NMI signals from CPUs to South Bridge for system management interrupt handling. IC Role / Device Role / Timing Role: Signal conditioner and voltage translator maintaining timing-critical interrupt latency. Use Value: EN1/EN2-controlled channel gating allows selective interrupt masking without software overhead or bus contention. |
| Power Supply Supervision | CPU-to-CPU Interconnect |
|
Use Scenario: Converting POWER_GOOD status and force-prochot commands between power supply unit and CPU VRMs. IC Role / Device Role / Timing Role: Reliable LVTTL-to-GTL interface for power sequencing and fault reporting. Use Value: 30 Ω series termination and 16 mA drive strength ensure clean edges on long PCB runs to remote VRM controllers. |
Use Scenario: Bridging IERR_L and FORCEPR_L signals between two Xeon sockets for coherency and error propagation. IC Role / Device Role / Timing Role: Low-skew bidirectional translator preserving signal integrity across socket boundaries. Use Value: Matched tPLH/tPHL (1–8 ns) minimizes skew between paired signals, avoiding race conditions in multi-socket error recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar GTL-to-LVTTL translation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| NXP GTL2002PW,118 | 8-bit, single-enable, no EN2 delay; lower pin count (TSSOP20); lacks 9AO push-pull output | Suitable for simpler single-CPU systems without PROCHOT_L glitch sensitivity | Select when board space is constrained and full 12-bit dual-enable functionality is unnecessary |
| Texas Instruments SN74GTLP1395PWR | 12-bit, dual-enable, but uses different GTL reference architecture (no external VREF pin); higher ICC (15 mA typical) | Requires redesign of VREF/VTT bias network; less flexible for mixed GTL−/GTL+/GTL systems | Choose only if existing design already uses TI's GTLP family and VREF-free topology is preferred |
Compared with GTL2107PW,112, the GTL2002PW,118 reduces channel count and removes glitch suppression, trading functionality for footprint; the SN74GTLP1395PWR replaces external VREF dependency with internal regulation but increases supply current and limits GTL mode flexibility.
Availability
GTL2107PW,112 is available at Aetrix Electronics and suitable for server motherboard design, CPU thermal management systems, and platform health monitoring circuits requiring stable component supply across extended product lifecycles.
Supply support for GTL2107PW,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 computing markets.
The GTL2107PW,112 belongs to NXP's high-speed interface translator product line, engineered specifically for x86 server platforms requiring robust, low-latency voltage-domain bridging between GTL-based CPU buses and LVTTL-based chipset peripherals.
FAQ
What is the primary function of the GTL2107PW,112 in dual-Xeon server architectures?
The GTL2107PW,112 serves as a 12-bit bidirectional GTL−/GTL/GTL+ to LVTTL translator, enabling signal interoperability between dual Xeon processors (using GTL signaling) and platform health management, South Bridge, and power supply components (using 3.3 V LVTTL). It handles critical signals including SMI_L, NMI, PROCHOT_L, and THRMTRIP_L with sub-10 ns propagation delay and glitch-suppressed enable logic - ensuring deterministic timing in thermal and power management sequences. The GTL2107PW,112 is essential for maintaining signal integrity across voltage domains in high-reliability server motherboards.
Does the GTL2107PW,112 support all GTL variants, and how is mode selection implemented?
Yes, the GTL2107PW,112 supports GTL−, GTL, and GTL+ standards via programmable Vref and VTT settings: GTL− requires VTT = 0.9 V and Vref = 0.6 V; GTL uses VTT = 1.2 V and Vref = 0.8 V; GTL+ needs VTT = 1.5 V and Vref = 1.0 V. Mode selection is achieved by externally biasing the VREF (pin 1) and VTT supply rails to the appropriate voltages - no internal register or configuration is needed. This analog-based flexibility allows the GTL2107PW,112 to adapt to multiple GTL voltage domains within the same platform without firmware intervention.
How does the EN2 delay feature in the GTL2107PW,112 prevent output glitches?
The EN2 delay in the GTL2107PW,112 is a hardware-integrated timing offset applied specifically to the 7BO1 and 7BO2 GTL outputs. It compensates for the up-to-100 ns propagation lag between rising edges on GTL inputs (5BI/6BI) and their corresponding LVTTL I/O counterparts (5A/6A). By delaying EN2 activation, the GTL2107PW,112 ensures that 7BO1/7BO2 do not momentarily drop LOW during this transition window - eliminating false PROCHOT_L assertions that could trigger unnecessary CPU throttling. This deterministic behavior is documented in the datasheet footnote [1] and verified in Figure 7 waveforms.
What are the key layout considerations for the GTL2107PW,112 on a high-speed server PCB?
For optimal performance, GTL2107PW,112 layout must include: (1) 100 nF ceramic decoupling capacitors placed within 3 mm of VCC (pin 28) and GND (pin 14); (2) controlled-impedance routing (50 Ω) for GTL outputs (7BO1/7BO2, 10BO1/10BO2) with 56 Ω VTT terminations; (3) VREF (pin 1) routed as a low-noise analog net, isolated from digital switching noise; and (4) LVTTL open-drain outputs (1AO–4AO, 5A, 6A) terminated with 1.5 kΩ pull-ups to VCC. These practices minimize crosstalk, ground bounce, and timing jitter - critical for maintaining signal fidelity in multi-GHz CPU interface environments where the GTL2107PW,112 operates.
Is the GTL2107PW,112 pin-compatible with other NXP GTL translators such as the GTL2002PW,118?
No, the GTL2107PW,112 is not pin-compatible with the GTL2002PW,118. The GTL2107PW,112 uses a 28-pin TSSOP package (SOT361-1) with dedicated pins for dual enables (EN1/EN2), 12 bidirectional channels, and VREF input, whereas the GTL2002PW,118 uses a 20-pin TSSOP (SOT23-20) with only one enable and 8 channels. Pin mappings differ completely - for example, VREF is pin 1 on GTL2107PW,112 but absent on GTL2002PW,118; EN2 is pin 23 on GTL2107PW,112 but unimplemented on GTL2002PW,118. Any replacement requires PCB redesign and schematic revision - the GTL2107PW,112 cannot serve as a drop-in upgrade or downgrade.
GTL2107PW,112 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- Packaging:
- Tube
- Product Status:
- Obsolete
- Translator Type:
- Mixed Signal
- Channel Type:
- Unidirectional
- Number of Circuits:
- 1
- Channels per Circuit:
- 12
- Voltage - VCCA:
- -
- Voltage - VCCB:
- -
- Input Signal:
- GTL
- Output Signal:
- LVTTL
- Output Type:
- Open Drain, Push-Pull
- Data Rate:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-TSSOP (0.173", 4.40mm Width)
GTL2107PW,112 FAQ
1.How can I place an order for GTL2107PW,112 through Aetrix?
Please submit a Request for Quotation (RFQ) for GTL2107PW,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 GTL2107PW,112 reliable?
The price and inventory of GTL2107PW,112 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for GTL2107PW,112 is usually 5 days.
3.What payment methods are accepted for GTL2107PW,112?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for GTL2107PW,112 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for GTL2107PW,112?
GTL2107PW,112 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your GTL2107PW,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 GTL2107PW,112?
For technical support, including GTL2107PW,112 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your GTL2107PW,112 requirements.
6.How does Aetrix verify that GTL2107PW,112 is sourced from the original manufacturer or authorized distributors?
All GTL2107PW,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 GTL2107PW,112 meets industry standards.
7.What is the process for return or replacement of GTL2107PW,112?
All GTL2107PW,112 units undergo pre-shipment inspection (PSI). If there is an issue with GTL2107PW,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 GTL2107PW,112 part is unused and in its original packaging.
Return procedure for GTL2107PW,112:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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