GTL2034PW,112 - 4-Bit GTL to GTL Buffer TSSOP-14 | NXP
MPN: GTL2034PW,112 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $0 | $0.00 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
GTL2034PW,112 Overview
A GTL (Gunning Transceiver Logic) buffer is a specialized member of the voltage translator and line driver family within the logic IC hierarchy. GTL uses a low-swing, open-drain, backplane-oriented signaling scheme in which a termination to a reference voltage defines the logic levels; buffers such as the GTL2034 regenerate the weak, heavily capacitive signals found on long bus runs without adding logic function, restoring signal integrity between a processor board and a backplane or between isolated bus segments.
Key features of the GTL2034 include its 4-bit (4 element, 1 bit per element) non-inverting buffer configuration, true open-drain outputs that support wired-OR and live-insertion style GTL topologies, and I/O structures that operate up to 3.6 V so the device can be used in higher-voltage open-drain output applications. The buffer architecture minimizes propagation delay, preserving setup and hold margins in high-speed bus systems.
Technically, the GTL2034 sits between the input GTL node and the output GTL node as a re-driver: the input stage senses the low-swing GTL logic level relative to the GTL reference, and the output stage sinks current through the external pull-up termination to regenerate a clean edge. Because the outputs are open-drain, the output high level is set entirely by the external termination rail, which is characteristic of GTL, GTL+ and BTL-family signaling. The 3.3 V supply powers only the internal sensing and drive circuitry, keeping static power low while supporting fast edge rates.
Typical applications include processor-to-backplane GTL bus buffering in telecommunications and networking equipment, memory subsystem interconnect in industrial controllers, and any distributed GTL/GTL+ bus where fan-out, bus capacitance or segment length would otherwise violate timing or signal-integrity budgets. Per NXP product information, the device supports data rates up to 250 MHz in these bus-buffering roles.
Design consideration: because the outputs are open-drain, correct termination resistor selection to the GTL termination rail is critical - the termination value sets both the output high level and the pull-up rise time, and must be chosen against bus capacitance and required edge rate.
This page synthesizes distributor listings, the official NXP datasheet link, drop-in replacement guidance (NXP designates the GTL2034PWZ as the drop-in replacement for discontinued packing variants), and practical design notes not consolidated in the datasheet alone.
Drop-in alternatives for GTL2034PW,112 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with GTL2034PW,112 (same form factor and footprint) — differing in Function, Number of Elements, Package.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
GTL2034PWZ
✅ Drop-In📋 Reference alternative (not in catalog)
GTL2034PW,118
✅ Drop-In✓ In Stock
$2.32 / Unit
View Datasheet →GTL2034PW,112 Maximum Ratings & Electrical Characteristics
| Function | 4-bit GTL to GTL non-inverting buffer |
| Logic Family | GTL / GTL+ / GTL/ANSI compatible |
| Number of Elements | 4 elements, 1 bit per element |
| Output Type | Open Drain |
| Polarity | Non-Inverting |
| Supply Voltage | 3.3 V |
| Maximum I/O Operating Voltage | 3.6 V |
| Maximum Data Rate | Up to 250 MHz (per NXP product page) |
| Operating Temperature | -40C to +85C |
| Package | 14-TSSOP (SOT402) |
| Mounting Type | Surface Mount |
| Pin Count | 14 |
| Ordering Code Suffix | ,112 (standard packing, per NXP ordering convention) |
GTL2034PW,112 14-tssop (sot402) Pin Configuration Guide
Pin configuration for GTL2034PW,112 (14-tssop (sot402) package). This digital IC includes GPIO, communication interfaces (UART, SPI, I2C), and power pins. Refer to the manufacturer datasheet for alternate pin functions and configuration options. Essential for embedded system design and PCB layout.
No detailed pinout data available for GTL2034PW,112.
Refer to the datasheet for full pin configuration.
Typical Applications
GTL2034PW,112 is suitable for 6 applications: Telecom Backplane GTL Bus Buffering, Networking Equipment Processor-to-Backplane Interconnect, Industrial Memory Subsystem Interconnect, Bus Segment Isolation in Multi-Drop Systems, Signal Regeneration for High-Fanout GTL Nodes, Service and Repair of Legacy GTL-Based Systems.
Telecom Backplane GTL Bus Buffering
In telecommunications shelves, a central processor board drives a GTL or GTL+ backplane that fans out to multiple line cards. Each card slot adds stub capacitance and reflection points, degrading edges beyond the timing budget. The GTL2034PW,112 buffers the bus locally on each card: its input stage senses the low-swing GTL level while the open-drain output sinks termination current to regenerate a clean edge, isolating the heavily loaded backplane segment from the local receiver cluster. With data rates supported up to 250 MHz per NXP product information and -40C to +85C operation, it fits central-office temperature environments. Termination resistors to the GTL reference rail set the high level and edge rate, so choose their values against total bus capacitance.
Recommended
Networking Equipment Processor-to-Backplane Interconnect
Router and switch control cards frequently use GTL-family buses to connect a network processor or CPU module to switching fabric or line-card interfaces across a connector. Long traces, connectors, and multi-drop topologies create capacitance the processor cannot drive directly. Placing a GTL2034PW,112 at the segment boundary re-drives the four critical control or data strobe lines; because its GTL inputs and outputs operate up to 3.6 V, it tolerates the higher open-drain voltage environments found in such systems. The non-inverting, 1-bit-per-element structure preserves signal polarity and per-line timing alignment, while the 3.3 V supply keeps local power distribution simple alongside standard logic on the same board.
Recommended
Industrial Memory Subsystem Interconnect
Industrial controllers built around high-end microprocessors sometimes retain GTL/GTL+ interfaces for memory or bus expansion. Memory connectors, riser cards, and long parallel runs push bus capacitance past what a processor pin can drive within setup and hold windows. The GTL2034PW,112 provides four buffered channels to re-drive such signals; its open-drain GTL outputs sink through the shared termination, maintaining the low bus swing that limits dynamic power. Rated -40C to +85C, it covers industrial enclosure temperature extremes. Designers should locate the buffer near the most capacitive node and keep the stub between buffer and termination short to preserve the edge rates required at the system's bus frequency.
Recommended
Bus Segment Isolation in Multi-Drop Systems
In multi-drop GTL systems - for example, several boards sharing one bus - a fault or power-off condition on one segment can load or clamp the shared line. The GTL2034PW,112 buffers each segment so localized loading is not reflected into the main bus; its open-drain output architecture naturally supports wired-OR-style shared topologies per the NXP datasheet description of GTL/GTL+/GTL+ operation. Because each of the four channels is independent (1 bit per element), engineers can selectively buffer only the lines needing isolation while passing others directly. This partitioning simplifies hot-swap planning and fault-domain analysis in modular instrumentation and control racks built around GTL-family signaling.
Recommended
Signal Regeneration for High-Fanout GTL Nodes
When one GTL signal must feed many receivers - clock echoes, parity, or shared status lines - the aggregate input capacitance slows edges and creates skew. Splitting the fanout across the four channels of one or more GTL2034PW,112 devices partitions the load: the source drives one buffer input per group, and each open-drain output drives its own terminated sub-segment. NXP characterizes the device as a high-speed buffer suitable for rates up to 250 MHz, so timing overhead remains small relative to typical backplane periods. Keep per-channel termination consistent to equalize rise times across sub-segments, and account for the buffer's propagation delay in the bus timing budget during worst-case analysis.
Recommended
Service and Repair of Legacy GTL-Based Systems
Many installed telecom and industrial platforms designed in the GTL era still require board-level repair. The GTL2034PW,112 remains the exact original ordering code for those designs; where the ,112 packing variant is constrained in the supply chain, NXP's own documentation designates GTL2034PWZ as the drop-in replacement - same 14-TSSOP (SOT402) footprint, identical pinout, identical electrical behavior, with the Z suffix marking the lead-free finish. Repair depots can therefore stock either code interchangeably without layout or qualification changes. Confirm the -40C to +85C rating matches the original system specification, and pull the official NXP GTL2034 datasheet for re-verification of AC parameters during repair qualification.
Recommended
Recommended Products Summary
Engineering reference data for GTL2034PW,112 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | GTL2034PWZ | GTL2034PW,118 |
|---|---|---|---|
| Package | 14-TSSOP (SOT402) | 14-TSSOP (SOT402) - same | 14-TSSOP (SOT402) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Function | 4-bit GTL to GTL buffer, non-inverting | 4-bit GTL to GTL buffer, non-inverting | 4-bit GTL to GTL buffer, non-inverting |
| Output Type | Open Drain | Open Drain | Open Drain |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V |
| I/O Voltage Range | Up to 3.6 V | Up to 3.6 V | Up to 3.6 V |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C |
| Lifecycle Note | Active per distributor listings; NXP designates GTL2034PWZ as drop-in replacement | NXP-designated drop-in replacement | Packing variant of the same die |
Key Differentiators
- True GTL-to-GTL re-driver (not a translator) (vs GTL20xx translating transceiver family)
- NXP-designated drop-in replacement continuity (vs GTL2034PWZ)
- 3.6 V open-drain I/O tolerance (vs Lower-voltage buffer logic families)
Design Notes
Because the GTL2034 outputs are open-drain, the output high level and rise time are set entirely by the external pull-up termination to the GTL termination rail, not by the IC. Size the termination resistor against total bus capacitance: lower resistance gives faster pull-up but higher static sink current when the output pulls low. Keep the trace from each buffer output to its termination point as short as possible, and simulate or measure eye margins at the target bus rate (up to 250 MHz per NXP product information) across the -40C to +85C range before release.
Place the GTL2034 close to the connector or high-capacitance node it is buffering so the input stub is minimal; the buffer cannot fix distortion that occurs upstream of its input pin. Decouple the 3.3 V supply pin with at least a 100 nF ceramic capacitor placed within a few millimeters of the supply pin, sharing the ground return of the GTL termination network. Follow the SOT402 land pattern in the NXP GTL2034 datasheet package drawing, and honor pin-1 marking orientation when placing the 14-TSSOP footprint.
Do not use the GTL2034 as an LVTTL-to-GTL translator - it is a GTL-to-GTL buffer only; NXP's GTL20xx octal transceiver family with a DIR pin serves the LVTTL translation role. Verify your ordering code against the NXP discontinuation notice: GTL2034PWZ is the designated drop-in replacement, so for new production prefer the PWZ code to avoid mid-program supply disruption. Confirm input voltage conditions never exceed the 3.6 V I/O maximum stated in the datasheet description of higher-voltage open-drain operation.
Compliance Information
Compliance data was not present in the verified web data. The Z-suffix variant (GTL2034PWZ) denotes NXP's lead-free finish convention; verify RoHS/REACH certificates on the NXP GTL2034PW product page before procurement.
