NXP Semiconductors GTL2107PW,118

Overview

GTL2107PW,118 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, provides EN1/EN2 enable control, features open-drain and push-pull outputs, and delivers sub-10 ns propagation delay in critical signal paths - enabling reliable communication in server motherboard power and thermal monitoring circuits.

For engineers reviewing the GTL2107PW,118 datasheet, GTL2107PW,118 pinout, GTL2107PW,118 application, or GTL2107PW,118 equivalent, this page delivers verified technical context, validated pin functions, confirmed timing parameters under GTL/GTL+/GTL− conditions, and real-world use cases in CPU SMI_L/NMI/PROCHOT_L buffering and Southbridge interface translation.

Technical Context

The GTL2107PW,118 implements dual independent enable-controlled translation channels: one for CPU-to-Southbridge SMI_L/NMI signals (e.g., 9BI→9AO, 11BI↔11A↔11BO), and another for PROCHOT_L/THRMTRIP_L handshaking with power supervisors (e.g., 5BI/6BI→7BO1/7BO2). Each channel includes internal delay logic to suppress glitches during asynchronous transitions.

It operates across three GTL families (GTL−, GTL, GTL+) using programmable VREF (0.5–1.8 V) and VTT (0.85–1.65 V), supports 12 bidirectional or unidirectional data paths, and integrates series-terminated 30 Ω drivers on LVTTL outputs to minimize reflections on high-speed traces.

Key Specifications

Pinout & Package

Package: TSSOP28 (SOT361-1), plastic thin shrink small outline package; 28 leads; body width 4.4 mm; lead pitch 0.65 mm.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar GTL-to-LVTTL translation applications.

Compared with GTL2107PW,118, the GTL2002PW offers fewer channels and no glitch suppression, limiting its use in dual-Xeon thermal management; the SN74GTLP1394PW provides broader voltage flexibility but lacks the precise VREF-based GTL family selection essential for server platform compliance.

Availability

GTL2107PW,118 is available at Aetrix Electronics and suitable for server motherboard design, CPU thermal management systems, and platform health monitoring circuits requiring stable component supply and long-term industrial availability.

Supply support for GTL2107PW,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 company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and communications markets.

The GTL2107PW,118 belongs to NXP's high-speed interface translator product line, engineered specifically for Intel Xeon platform interoperability - addressing signal integrity, timing accuracy, and robustness requirements in enterprise-class server motherboards.

FAQ

What is the primary function of the GTL2107PW,118 in dual-Xeon server platforms?

The GTL2107PW,118 serves as a 12-bit bidirectional voltage-level translator between GTL−/GTL/GTL+ I/O domains (used by Xeon CPUs) and 3.3 V LVTTL logic (used by Southbridge, power supervisors, and platform health controllers). Its core function is to ensure reliable, glitch-free signal transfer for thermal alerts (PROCHOT_L, THRMTRIP_L), interrupts (SMI_L, NMI), and power sequencing (FORCEPR_L), making it integral to GTL2107PW,118-based server motherboard designs.

Does the GTL2107PW,118 support all three GTL standards - GTL−, GTL, and GTL+ - simultaneously?

Yes, the GTL2107PW,118 supports GTL−, GTL, and GTL+ operation through programmable VREF and VTT pins. With VREF set to 0.6 V and VTT to 0.9 V, it complies with GTL−; at VREF = 0.8 V and VTT = 1.2 V, it meets GTL; and at VREF = 1.0 V and VTT = 1.5 V, it satisfies GTL+. All configurations are validated in the GTL2107PW,118 datasheet and require no hardware changes - only adjustment of external reference voltages.

How does the built-in delay on GTL2107PW,118 outputs 7BO1 and 7BO2 prevent glitches?

The GTL2107PW,118 incorporates intentional delay logic on 7BO1/7BO2 to avoid LOW glitches that would otherwise occur when GTL inputs 5BI/6BI transition from LOW to HIGH faster than corresponding LVTTL I/Os 5A/6A can respond (up to 100 ns skew). This delay aligns output timing, ensuring clean PROCHOT_L assertion during CPU thermal throttling - a feature explicitly documented in the GTL2107PW,118 functional description and Figure 7 waveform analysis.

What are the key differences between the open-drain and push-pull outputs on the GTL2107PW,118?

The GTL2107PW,118 provides both output types: 1AO–4AO, 5A, and 6A are open-drain (requiring external pull-ups for HIGH state), enabling wired-OR bus architectures like SMI_L; 9AO is push-pull (actively drives HIGH/LOW), suited for point-to-point signals such as POWER_GOOD. This hybrid architecture gives designers flexibility in implementing shared interrupt lines versus dedicated control signals - a defining characteristic of the GTL2107PW,118.

Is the GTL2107PW,118 pin-compatible with other NXP GTL translators like the GTL2002PW?

No, the GTL2107PW,118 is not pin-compatible with the GTL2002PW. The GTL2107PW,118 uses a 28-pin TSSOP package (SOT361-1) with 12 data paths, dual enables (EN1/EN2), and specialized pins like 10BO1/10BO2 and 11BO. In contrast, the GTL2002PW is an 8-pin SO or TSSOP device with only one enable and four channels. Pin mapping, signal assignment, and power pin locations differ fundamentally - direct PCB replacement is not possible without layout revision.