GTL2034PW - 4-Bit GTL to GTL Bus Buffer | NXP | TSSOP-24
Référence : GTL2034PW ✗ Fin de vie| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $2.1 | $2,10 |
| 10 | $1.89 | $18,90 |
| 100 | $1.62 | $162,00 |
| 500 | $1.38 | $690,00 |
| 1 000 | $1.15 | $1 150,00 |
GTL2034PW Présentation
A GTL (Gunning Transceiver Logic) buffer is a specialized level-shifting and line-driving device in the logic IC family that interfaces a low-voltage LVTTL system side with a GTL/GTL+ backplane or memory bus. GTL buses use open-drain outputs with pull-up resistors to a terminated reference voltage (VTT), making buffer selection critical for signal integrity in multi-drop, backplane, and memory-interconnect topologies.
Key features include true 4-bit GTL-to-GTL buffering, GTL inputs and outputs that operate up to 3.6 V for use in higher-voltage open-drain output applications, and a DIR direction pin that configures the device either as a GTL-to-LVTTL sampling receiver or as an LVTTL-to-GTL driver. The LVTTL side operates from a single 3.3 V supply, simplifying integration with standard logic rails.
Architecturally, the GTL2034 combines sampling receiver circuitry on the LVTTL side with open-drain GTL drivers on the bus side. The open-drain outputs require external pull-up resistors to VTT, and the 3.6 V GTL I/O tolerance gives designers margin when the pull-up rail sits above the nominal 3.3 V level. Because only four bits are buffered per device, multiple GTL2034 devices can be deployed incrementally where a wide 20-bit buffer such as the GTL2000 family member would be oversized.
Typical applications include memory-bus buffering in telecom and datacom line cards, GTL+ backplane interfaces in industrial control systems, and level translation between 3.3 V LVTTL processors and legacy GTL-based peripherals.
For reliable operation, size the VTT pull-up resistors to achieve the specified GTL output low level at the expected bus load, and tie the DIR pin to a defined level rather than leaving it floating. Decouple the 3.3 V supply with 0.1 uF ceramics placed close to the package pins.
This page synthesizes distributor listings, the official NXP datasheet link, and drop-in replacement guidance (including the NXP-recommended GTL2034PWZ) not consolidated in the manufacturer datasheet alone.
Alternatives de remplacement direct pour GTL2034PW — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
GTL2034PWZ
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
GTL2034PW Valeurs maximales et caractéristiques électriques
| Fonction | 4-bit GTL to GTL bus buffer |
| Bus Interface | GTL / GTL+ / LVTTL |
| Tension d'alimentation | 3.3 V |
| GTL I/O Voltage Range | up to 3.6 V |
| Type de sortie | Open-drain (GTL side) |
| Direction Control | DIR pin (receiver or driver mode) |
| Température de fonctionnement | -40C to +85C |
| Package Type | TSSOP-24 (SOT355-1, MO-153, 4.40 mm body) |
| Nombre de broches | 24 |
| Type de montage | Surface Mount |
| Number of Bits | 4 |
| Logic Family Compatibility | LVTTL (system side), GTL/GTL+ (bus side) |
| Lifecycle Note | Discontinued per NXP PCN dated 2021-11-03; drop-in replacement is GTL2034PWZ |
Guide de configuration des broches du GTL2034PW tssop-24 (sot355-1, mo-153, 4.40 mm body)
Configuration des broches du GTL2034PW (boîtier tssop-24 (sot355-1, mo-153, 4.40 mm body)). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour GTL2034PW.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
GTL2034PW convient pour 6 applications: Telecom Line Card Memory Bus Buffering, GTL+ Backplane Level Translation, Processor-to-Legacy-Peripheral Interface, Industrial Control Backplane Cards, Datacom Shelf Controller Interfacing, Test and Measurement Fixture Translation.
Telecom Line Card Memory Bus Buffering
In telecom and datacom line cards, memory and control buses frequently use GTL or GTL+ signaling with open-drain outputs terminated to VTT. The GTL2034PW fits this role because its GTL inputs and outputs operate up to 3.6 V, giving margin above the nominal 3.3 V termination rail, while its LVTTL side runs directly from the card's 3.3 V logic supply. Placing the buffer between the memory controller and the terminated GTL bus isolates controller pins from heavy bus loading. The open-drain output stage requires external pull-up resistors sized for the bus capacitance and termination network; the 4-bit width lets designers place buffers adjacent to the exact bus segments that need isolation, reducing stub lengths. The industrial -40C to +85C temperature range covers central-office equipment environments.
Recommandé
GTL+ Backplane Level Translation
Legacy industrial and telecom backplanes frequently specify GTL+ signaling, while modern line-card logic is 3.3 V LVTTL. The GTL2034PW bridges this gap in both directions using its DIR pin: configured as a sampling receiver, it captures GTL+ bus states and outputs clean LVTTL to local logic; configured as a driver, it translates LVTTL commands onto the open-drain GTL+ bus. The 3.6 V GTL I/O tolerance accommodates backplane pull-up rails slightly above 3.3 V without overstress. Because GTL+ backplanes are shared multi-drop media, the open-drain output naturally supports wired-OR behavior with proper termination. The 4-bit granularity allows independent buffering of address, data, and control groups with staggered direction control, avoiding the monolithic direction switching of wider single-package buffers.
Recommandé
Processor-to-Legacy-Peripheral Interface
When a modern 3.3 V LVTTL processor must communicate with legacy GTL-based memory, ASICs, or peripherals, the GTL2034PW provides the level-shifting buffer stage between them. The LVTTL side connects directly to processor GPIO or bus pins at 3.3 V, while the open-drain GTL side, with pull-ups to the peripheral's VTT rail, meets GTL input thresholds up to 3.6 V. The DIR pin lets firmware switch the interface between reading peripheral status (GTL-to-LVTTL) and writing commands (LVTTL-to-GTL). Its 4-bit width matches typical command/status or nibble-wide control buses. Designers should verify GTL VOL margins with the peripheral's input current and keep the buffer close to the connector or peripheral to limit unterminated stub length on the GTL side.
Recommandé
Industrial Control Backplane Cards
Industrial control chassis built around GTL-style open-drain buses benefit from the GTL2034PW's industrial -40C to +85C operating range and its tolerant 3.6 V GTL I/O, which withstands pull-up rail variation from heavily loaded or long backplane runs. Each buffer handles 4 bits, so address, data, and handshake lines can be grouped on separate devices with individual DIR control, simplifying redundancy and hot-swap-style design practices at the card level. The TSSOP-24 surface-mount package suits standard PCB assembly and provides a compact 4.40 mm-wide footprint. The open-drain outputs merge safely with other wired-OR sources on shared status lines, provided the total sink current budget respects the datasheet VOL specification across the full temperature range.
Recommandé
Datacom Shelf Controller Interfacing
Shelf and slot controllers in datacom equipment often must monitor or drive GTL-bus-based alarm, presence, and management signals distributed across a chassis. The GTL2034PW buffers four such signals per package: with DIR set as a receiver it samples open-drain GTL lines (wired-OR aggregates from multiple slots) and presents clean LVTTL levels to the controller; with DIR as a driver it asserts management signals onto the bus. The up-to-3.6 V GTL input tolerance safely handles termination rails set near 3.6 V, and the sampling receiver architecture prevents marginal bus levels from propagating ambiguous logic into the controller. The -40C to +85C range suits uncontrolled-temperature equipment rooms, and its TSSOP-24 package fits dense controller boards.
Recommandé
Test and Measurement Fixture Translation
Test fixtures that stimulate or monitor GTL-bus-based DUTs use the GTL2034PW to translate between the tester's 3.3 V LVTTL domain and the DUT's GTL environment. The DIR pin allows automated test equipment to reconfigure fixture direction under software control between read and write phases. The GTL I/O rating up to 3.6 V accommodates fixture termination supplies set above 3.3 V for margin or for emulating worst-case bus levels, a common requirement in characterization setups. The 4-bit width suits control, chip-select, and status groups, with multiple packages covering wider buses. The TSSOP-24 (SOT355-1) package is hand-solderable for prototype fixtures, and the standard footprint keeps fixture PCBs compatible when migrating to the GTL2034PWZ lead-free variant.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour GTL2034PW — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | GTL2034PWZ |
|---|---|---|
| Package | TSSOP-24 (SOT355-1) | TSSOP-24 (SOT355-1) - same |
| Brand | NXP Semiconductors | NXP Semiconductors - same |
| Bus Bits | 4 | 4 |
| Supply Voltage | 3.3 V | 3.3 V |
| GTL I/O Voltage | up to 3.6 V | up to 3.6 V |
| Operating Temperature | -40C to +85C | -40C to +85C |
| Lifecycle Status | Discontinued (PCN 202111031DN) | Active - designated drop-in replacement |
| Termination/Plating | Standard (not lead-free PWZ) | Lead-free / RoHS-compliant |
Principaux différenciateurs
- NXP-sanctioned drop-in replacement exists (vs GTL2034PWZ)
- 3.6 V GTL I/O tolerance (vs GTL2034PWZ)
- Trade-off: only 4 bits per package (vs GTL2034PWZ)
Notes de conception
The GTL2034PW was discontinued by NXP under PCN 202111031DN (dated 2021-11-03). NXP explicitly designates the GTL2034PWZ as the drop-in replacement; it uses the same die and the same TSSOP-24 (SOT355-1) footprint, so no PCB change is required. For any new design or production build, specify the PWZ suffix to secure an actively supported, RoHS-compliant part and avoid last-time-buy scarcity on the PW termination.
The GTL side uses open-drain outputs that require external pull-up resistors to the VTT termination rail. Because the GTL I/O operates up to 3.6 V, the pull-up rail may sit above the nominal 3.3 V supply, but the sink-current budget must still keep VOL within the datasheet limit at maximum bus load and the highest expected VTT. Decouple the 3.3 V LVTTL supply with 0.1 uF ceramic capacitors placed within a few millimeters of the supply pins, and share a solid ground between the LVTTL and GTL sides to maintain valid input thresholds.
Route GTL bus traces as controlled-impedance lines with the termination network placed at the bus end, not at the buffer. Keep the GTL2034 close to the bus connector or DUT to minimize stub length, which otherwise causes reflections on the terminated open-drain bus. Drive the DIR pin from a defined logic level; a floating direction pin risks bus contention during power-up. For bidirectional half-duplex use, sequence DIR changes so the bus is idle, avoiding mid-transaction direction flips that corrupt sampled data.
Informations de conformité
The GTL2034PW (non-Z suffix) is the standard-termination variant discontinued by NXP in 2021; the lead-free GTL2034PWZ drop-in replacement carries the RoHS-compliant termination. Not AEC-Q100 qualified.
