GTL2034PW,118 - 4-Bit GTL Bus Buffer Open-Drain | NXP
MPN: GTL2034PW,118 ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.84 | $2.84 |
| 10 | $2.7 | $27.00 |
| 100 | $2.56 | $256.00 |
| 500 | $2.44 | $1,220.00 |
| 1,000 | $2.32 | $2,320.00 |
GTL2034PW,118 Overview
A GTL (Gunning Transceiver Logic) buffer is a specialized line driver used in voltage-level translation and bus-repeater applications. Within the power-management and logic hierarchy, it sits between generic logic ICs and dedicated voltage level translators: it isolates and re-drives heavily loaded backplanes by regenerating signal edges while the open-drain architecture lets the termination voltage define the logic swing. GTL and GTL+ are open-drain, terminated-low bus standards historically used for processor-to-memory backplanes in telecom, industrial, and networking equipment.
Key features of the GTL2034 include 4 bits of non-inverting buffering (one bit per element), open-drain GTL outputs compatible with GTL, GTL-, and GTL+ signaling, and GTL inputs and outputs that operate up to 3.6 V, allowing the device to be used in higher-voltage open-drain output applications. The buffered architecture minimizes propagation delay degradation across long, heavily capacitive backplane runs compared with passive repeaters.
Architecturally, the GTL2034 regenerates each input edge before driving the open-drain pull-down, which isolates bus capacitance from the source and preserves signal integrity on long terminated lines. Because outputs are open-drain, the pull-up voltage is independent of the supply, giving designers flexibility in mixed-voltage systems up to 3.6 V on the GTL side.
Typical applications include telecom line cards, industrial backplane bus repeaters, processor-memory interface level shifting, and legacy server infrastructure maintenance. The 4-bit width suits address and control lines where a full 14-bit translator is oversized.
Design consideration: open-drain outputs require external pull-up resistors sized against the bus termination network, and supply decoupling of 0.1 uF per device is recommended. Verify output sink current against the total bus load.
Important lifecycle note: NXP has discontinued the GTL2034PW,118 (discontinuation notice dated 2021-11-03), and the manufacturer designates GTL2034PWZ as its drop-in replacement. This page synthesizes distributor pricing, lifecycle status, and replacement guidance not found in a single manufacturer datasheet.
Drop-in alternatives for GTL2034PW,118 — 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,118 (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,112
✅ Drop-In✓ In Stock
Contact for price
View Datasheet →GTL2034PW,118 Maximum Ratings & Electrical Characteristics
| Function | 4-bit GTL-/GTL/GTL+ bus buffer |
| Logic Type | Buffer, Non-Inverting |
| Number of Elements | 4 |
| Bits per Element | 1 |
| Output Type | Open Drain |
| GTL Side Operating Voltage | up to 3.6 V |
| Operating Temperature | -40C to +85C |
| Package | 14-TSSOP (PW) |
| Mounting Type | Surface Mount |
| Packing Method | Tape and Reel; SSB (Static Shielding Bag) solution, keep sealed between uses |
| Lifecycle Status | Discontinued 2021-11-03; drop-in replacement GTL2034PWZ |
| Applications | GTL backplane bus buffering, level translation |
GTL2034PW,118 14-tssop (pw) Pin Configuration Guide
Pin configuration for GTL2034PW,118 (14-tssop (pw) 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,118.
Refer to the datasheet for full pin configuration.
Typical Applications
GTL2034PW,118 is suitable for 6 applications: GTL Backplane Bus Repeater, Processor-to-Memory Interface Level Translation, Telecom Line Card Control Signaling, Industrial Automation Backplane Maintenance, Mixed-Voltage Open-Drain Bus Interface, Legacy Server Infrastructure Repair.
GTL Backplane Bus Repeater
The GTL2034PW,118 regenerates 4 GTL/GTL+ backplane signal lines whose edge rates degrade over long, heavily capacitive bus runs. Its non-inverting buffered architecture isolates the driver side from bus capacitance, and the open-drain outputs allow the pull-up network to reference the backplane termination rail up to 3.6 V. Placed as a mid-bus repeater on address and control lines, it restores logic levels and propagation consistency without adding switching noise, since each output only pulls down against the termination. Designers should size pull-up resistors against the total bus termination so output sink current stays within datasheet limits, and keep the 0.1 uF supply decoupling close to the device.
Recommended
Processor-to-Memory Interface Level Translation
In legacy server and embedded controller boards, processor or memory-controller GTL ports must drive memory buses terminated at different reference levels. The GTL2034PW,118 provides 4 bits of translation with GTL-side I/O up to 3.6 V, letting the open-drain outputs match the memory-side termination voltage while the control side runs at its own level. The buffer also offloads drive current from the processor pads, improving signal integrity on multi-drop nets. With a -40C to +85C range it covers telecom-grade equipment rooms. Verify each channel's total bus load and pull-up sizing during design, as open-drain high levels are set entirely by the external network.
Recommended
Telecom Line Card Control Signaling
Telecom line cards commonly carry GTL/GTL+ control and address signals across backplane connectors with significant stub and cable capacitance. The GTL2034PW,118 buffers 4 such channels non-invertingly, restoring clean edges at each line card and preventing reflection-induced timing errors. The open-drain output stage shares the bus termination rail (up to 3.6 V), so hot-plug and multi-card OR-tied signaling is supported naturally. Its industrial -40C to +85C temperature rating and 14-TSSOP footprint fit dense card layouts. Because the part is EOL, new card builds should use GTL2034PWZ, which is identical electrically and footprint-compatible with zero PCB change.
Recommended
Industrial Automation Backplane Maintenance
Factory automation and PLC backplanes built around GTL-class signaling frequently need repair parts years after original design. The GTL2034PW,118, with its 4-bit non-inverting open-drain buffer architecture and -40C to +85C rating, serves as a service replacement for these legacy boards. Where the EOL status complicates sourcing, the GTL2034PWZ provides the identical function in the same 14-TSSOP footprint. Maintenance engineers should confirm the GTL-side pull-up rail does not exceed 3.6 V, the datasheet maximum for GTL I/O, and should keep devices in their static-shielding bags until assembly to protect the finish.
Recommended
Mixed-Voltage Open-Drain Bus Interface
Systems mixing logic families on an open-drain bus - for example 3.3 V or lower-voltage controllers interfacing to a GTL-terminated rail - benefit from the GTL2034PW,118 because its GTL inputs and outputs operate up to 3.6 V, higher than many standard GTL buffers tolerate. Each of the 4 channels can pull down against a rail independent of the buffer supply, enabling level-shifted, wired-OR signaling between subsystems. The non-inverting transfer keeps firmware and logic polarity assumptions unchanged. Designers must provide external pull-ups and should verify the bus time constant RC against required edge rates, since open-drain rise times are set by the pull-up network rather than the driver.
Recommended
Legacy Server Infrastructure Repair
Server and storage platforms of the GTL era continue to operate in secondary markets, and board-level repair demands authentic EOL parts. The GTL2034PW,118 restores 4 GTL/GTL+ bus channels in these systems; its buffered, non-inverting open-drain design matches the original silicon behavior, avoiding timing changes that could break marginal timing budgets on memory or arbitration buses. Distributors such as DigiKey and Mouser still list the part (as of 2026-10-19), while eBee offers stock from $2.8399. For repeat repairs, standardize on GTL2034PWZ - NXP's designated replacement - to avoid repeated EOL stock hunts while keeping the same 14-TSSOP PCB footprint.
Recommended
Recommended Products Summary
Engineering reference data for GTL2034PW,118 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | GTL2034PWZ | GTL2034PW,112 |
|---|---|---|---|
| Package | 14-TSSOP (PW) | 14-TSSOP (PW) - same | 14-TSSOP (PW) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Function | 4-bit GTL-/GTL/GTL+ buffer, non-inverting | 4-bit GTL-/GTL/GTL+ buffer, non-inverting | 4-bit GTL-/GTL/GTL+ buffer, non-inverting |
| Output Type | Open Drain | Open Drain | Open Drain |
| GTL Side Operating Voltage | 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 |
Key Differentiators
- Designated active replacement (vs GTL2034PWZ)
- High-voltage open-drain tolerance (vs GTL2034PW,112)
- 4-bit granularity for control buses (vs GTL2034PWZ)
Design Notes
Decouple the GTL2034PW,118 supply with a 0.1 uF ceramic capacitor placed within a few millimeters of the supply pin, plus bulk capacitance per board standard. Because the four open-drain outputs can switch simultaneously, simultaneous pull-down events create supply and ground transients; a solid, low-impedance ground connection is essential to keep output-low levels within specification on long backplane runs.
Open-drain outputs do not drive high: the bus high level is set entirely by the external pull-up/termination network, and rise time follows the RC of that network against total bus capacitance. Verify the GTL-side rail never exceeds 3.6 V, the datasheet maximum for GTL inputs and outputs. Also note the part is EOL (2021-11-03) - design new production around GTL2034PWZ to avoid last-time-buy risk.
The 14-TSSOP (PW) footprint suits dense backplane layouts, but keep GTL trace stubs short and maintain the bus termination topology recommended for GTL/GTL+ (parallel termination at the pull-up rail). Place the buffer close to the connector it serves to minimize unterminated stub length. NXP specifies a static-shielding-bag (SSB) packing method - keep unused devices sealed between uses to protect the lead finish through reflow.
Compliance Information
Compliance data not stated in provided web sources. The GTL2034PWZ (Pb-free designation) is NXP's designated drop-in replacement; confirm RoHS/REACH status on the NXP product page for the specific ordering code.
