GTL2018PW-Q900118 - 8-Bit LVTTL to GTL Transceiver | NXP
Référence : GTL2018PW-Q900118 ✗ 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 |
GTL2018PW-Q900118 Présentation
A translating transceiver is a mixed-signal level-shifter IC that moves digital signals between two logic families operating at different voltage levels. Within the signal-chain hierarchy, the GTL2018 belongs to the voltage translator family, under logic ICs, and mixed-signal interface semiconductors. GTL (Gunning Transceiver Logic) is a low-swing backplane bus standard historically used in computer motherboards and peripheral interconnects, where the LVTTL-side controller cannot directly drive the low-swing GTL bus.
Key features include an octal (8-channel) bidirectional architecture controlled by a single DIR (direction) pin, allowing the part to operate either as a GTL-to-LVTTL sampling receiver or as an LVTTL-to-GTL driver. The LVTTL-side inputs are 5.5 V tolerant, permitting direct connection to TTL or 5 V CMOS logic without external clamping. The Q900 suffix denotes an automotive-grade qualification variant with extended quality screening.
Technically, the device implements open-drain GTL outputs with a reference voltage (GTL ref) defining the bus switching threshold, translating between the 3.3 V LVTTL domain and the low-swing GTL domain. Because translation is bidirectional per the DIR control, one 24-pin package replaces multiple discrete transistor level-shift stages, reducing BOM count and board area on bus-heavy designs.
Typical applications include legacy computer and server backplane GTL buses, telecommunications line cards, industrial control interfaces bridging 3.3 V or 5 V TTL controllers to GTL peripherals, and automotive ECU bus interfaces for the Q900-qualified variant.
Design consideration: the GTL bus requires proper reference-voltage generation and termination resistors on the GTL side; verify the termination network against the bus loading before layout.
This page synthesizes distributor availability data, the manufacturer product page, and drop-in alternative analysis not consolidated in the standard datasheet.
Alternatives de remplacement direct pour GTL2018PW-Q900118 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec GTL2018PW-Q900118 (même facteur de forme et même empreinte) — différant par Direction Control, Function, LVTTL Input Tolerance, Package Type, Automotive Variant.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
GTL2018PW,118
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Voir la fiche technique →GTL2018PW
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$1.85 / unité
Voir la fiche technique →GTL2018PW-Q900118 Valeurs maximales et caractéristiques électriques
| Fonction | 8-bit LVTTL to GTL translating transceiver |
| Number of Channels | 8 |
| Translation Direction | Bidirectional (DIR pin controlled) |
| LVTTL Side Supply Voltage | 3.3 V |
| GTL Side Interface | GTL / GTL- / GTL+ |
| LVTTL Input Tolerance | 5.5 V (TTL / 5 V CMOS compatible) |
| Température de fonctionnement | -40 C to +85 C |
| Package Type | TSSOP-24 (SOT355-1, MO-153, 4.40 mm body width) |
| Nombre de broches | 24 |
| Type de montage | Surface Mount |
| Grade | Q900 automotive quality variant |
| Direction Control | DIR pin |
| Output Type (GTL side) | Open-drain, low-swing GTL |
| Statut du cycle de vie | End of Life (per NXP product page) |
Guide de configuration des broches du GTL2018PW-Q900118 tssop-24 (sot355-1, mo-153, 4.40 mm body width)
Configuration des broches du GTL2018PW-Q900118 (boîtier tssop-24 (sot355-1, mo-153, 4.40 mm body width)). 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 GTL2018PW-Q900118.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
GTL2018PW-Q900118 convient pour 6 applications: Computer and Server Backplane GTL Buses, Automotive ECU Bus Interfaces (Q900), Telecommunications Line Cards, Industrial Control Interface Bridging, Test and Measurement Instrumentation, Legacy System Maintenance and Repair.
Computer and Server Backplane GTL Buses
The GTL2018PW-Q900118 was designed specifically for 3.3 V LVTTL system controllers interfacing GTL/GTL-/GTL+ backplane buses. Its octal architecture translates eight bus lines simultaneously, and the open-drain GTL-side outputs with external reference and termination match the low-swing bus signaling convention. In legacy server and workstation boards, the 5.5 V tolerant LVTTL inputs allow direct connection to 5 V TTL control logic while the DIR pin switches the port between bus sampling (receive) and bus driving modes. Because translation is per-bit bidirectional under a single DIR control, one 24-pin TSSOP replaces multiple discrete transistor level-shift stages, cutting BOM count, board area, and propagation-skew concerns across the bus. Designers should follow the datasheet termination guidance for heavily loaded backplane segments, as GTL signal integrity depends on correct pull-up voltage and resistor sizing.
Recommandé
Automotive ECU Bus Interfaces (Q900)
The Q900 quality-screening suffix makes the GTL2018PW-Q900118 the automotive-oriented member of the GTL2018 family. In ECU and body-control platforms that retain GTL-style low-swing signaling between a 3.3 V microcontroller and bus transceiver logic, this part provides eight translation channels in one automotive-screened 24-pin TSSOP. The -40 C to +85 C operating range covers in-cabin and under-dash environments, while Q900 screening supports automotive customer quality-system audits. The 5.5 V tolerant LVTTL inputs simplify interfacing with legacy 5 V sensor or actuator logic without external clamps. Note the critical caveat: NXP has placed the GTL2018 family on End of Life, so automotive programs must execute lifetime buys or obtain end-customer approval to substitute the standard-grade GTL2018PW,118, which is electrically and mechanically identical but lacks Q900 screening documentation.
Recommandé
Telecommunications Line Cards
Telecom line cards frequently mixed 5 V TTL control logic, 3.3 V LVTTL processors, and low-swing bus signaling on dense boards. The GTL2018PW-Q900118 bridges these domains: its 3.3 V LVTTL side talks to the local processor while the 5.5 V tolerant inputs accept direct TTL control signals, and the GTL side drives or samples the low-swing interconnect. Eight channels per 24-pin TSSOP (SOT355-1) keep per-channel board area minimal on high-density cards, and the DIR pin lets firmware switch each card port between monitoring (sampling receiver) and active drive modes. The -40 C to +85 C range suits central-office temperature requirements. For replacement designs on EOL constraints, the standard-grade GTL2018PW,118 offers identical electrical behavior for non-telecom-grade screening environments, preserving the same PCB footprint and assembly process.
Recommandé
Industrial Control Interface Bridging
Industrial controllers built around 3.3 V MCUs often must communicate with GTL-level backplanes or peripheral boards descended from computer-bus architectures. The GTL2018PW-Q900118 provides the translation path: eight bidirectional channels, 3.3 V LVTTL compatibility, and 5.5 V tolerant inputs for legacy 5 V CMOS I/O, all in a surface-mount 24-pin TSSOP rated -40 C to +85 C for industrial cabinets. Because the GTL side uses open-drain low-swing signaling with external reference and termination, integrators can match the bus voltage of the target system by adjusting the pull-up network rather than changing the translator. The single DIR pin enables simple direction control from one MCU GPIO. Given the End of Life status, industrial buyers should validate the pin-compatible GTL2018PW,118 as the ongoing-supply option and size buffer stock accordingly for long product service lives.
Recommandé
Test and Measurement Instrumentation
Bench instruments, protocol analyzers, and backplane exercisers that must probe or emulate GTL buses use the GTL2018PW-Q900118 as the physical-layer translation front end. The sampling-receiver mode (GTL-to-LVTTL via DIR) lets measurement logic capture low-swing bus traffic, while drive mode emulates a GTL bus agent for stimulus testing. Eight channels allow word-wide capture in a single package, improving channel-to-channel timing consistency versus discrete transistor translators. The 5.5 V tolerant inputs protect against accidental 5 V logic connection on bench setups, a common field hazard. Designers should route the GTL reference and termination close to the package and follow the datasheet layout guidance to minimize reflection-induced sampling errors. As the family is EOL, instrument service organizations should standardize on the electrically identical GTL2018PW,118 for spares and repairs.
Recommandé
Legacy System Maintenance and Repair
Repair depots maintaining legacy computers, avionics test sets, and industrial systems with GTL buses rely on the GTL2018PW-Q900118 to restore failed translation stages without PCB redesign. Because replacement is pin-to-pin on the original 24-pin TSSOP (SOT355-1) footprint, a failed part swaps directly onto the existing land pattern - no rework of the 0.65 mm pitch layout is required. The Q900 ordering code suits depots supporting automotive-adjacent equipment where screening traceability matters; for all other repairs the standard-grade GTL2018PW,118 is an electrically identical drop-in. Depot planners should note the NXP End of Life status: harvest boards for reclaimed devices, secure last-time-buy stock from authorized distributors, and validate any broker-sourced parts with incoming inspection, since discontinued transceivers are a common counterfeit target on the gray market.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour GTL2018PW-Q900118 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | GTL2018PW,118 | GTL2018PW |
|---|---|---|---|
| Package | TSSOP-24 (SOT355-1) | TSSOP-24 (SOT355-1) - same | TSSOP-24 (SOT355-1) - same |
| Brand | NXP Semiconductors | NXP Semiconductors | NXP Semiconductors |
| Function | 8-bit LVTTL to GTL/GTL-/GTL+ transceiver | 8-bit LVTTL to GTL/GTL-/GTL+ transceiver | 8-bit LVTTL to GTL/GTL-/GTL+ transceiver |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V |
| LVTTL Input Tolerance | 5.5 V | 5.5 V | 5.5 V |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Quality Grade | Q900 automotive screening | Standard grade | Standard grade |
Principaux différenciateurs
- Q900 automotive quality screening (vs GTL2018PW,118)
- 5.5 V tolerant LVTTL inputs (vs GTL2018PW)
- Octal integration density (vs discrete GTL translation stages)
Notes de conception
Place the GTL reference and pull-up termination network close to the GTL2018PW-Q900118 GTL-side pins. GTL is a low-swing, open-drain bus standard whose noise margin depends on accurate reference voltage and correct termination resistance relative to bus loading. On heavily loaded backplanes, follow the termination values in the NXP datasheet typical application section and keep GTL traces short and impedance-controlled to limit reflections at the sampling receiver.
The DIR pin controls all eight channels simultaneously; avoid toggling DIR while the GTL bus is actively driven by another agent, since switching from sampling-receiver to driver mode mid-transaction can cause bus contention. Sequence DIR changes only between bus transactions, and add a weak pull-up or pull-down on DIR so the translator enters a defined, non-driving state during MCU reset when the controlling GPIO is high-impedance.
The GTL2018 family is End of Life per the NXP product page, so BOMs must not assume ongoing factory supply. Qualify the pin-compatible standard-grade GTL2018PW,118 now and secure last-time-buy quantities of the Q900 variant if screening documentation is contractually required. Additionally, the 5.5 V tolerant rating applies to the LVTTL inputs only - do not exceed the absolute maximum ratings on the GTL-side pins, which are governed by the external pull-up voltage chosen for the bus.
Informations de conformité
Compliance data was not present in the provided verified web data. The Q900 suffix denotes NXP automotive-quality screening per NXP naming conventions; consult the official NXP product page (nxp.com/part/GTL2018PW) Environmental Quality section for current RoHS/REACH status.
