GTL2018PW-Q900118 - 8-Bit LVTTL to GTL Transceiver | NXP
MPN: GTL2018PW-Q900118 ✗ Cuối đờiGTL2018PW-Q900118 Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho GTL2018PW-Q900118 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với GTL2018PW-Q900118 (cùng hình factor và footprint) — khác nhau ở Direction Control, Function, LVTTL Input Tolerance, Package Type, Automotive Variant.
GTL2018PW,118
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →GTL2018PW
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →GTL2018PW-Q900118 Tỷ lệ tối đa & tính chất điện
| Chức năng | 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) |
| Nhiệt độ hoạt động | -40 C to +85 C |
| Package Type | TSSOP-24 (SOT355-1, MO-153, 4.40 mm body width) |
| Số chân | 24 |
| Kiểu lắp đặt | Surface Mount |
| Grade | Q900 automotive quality variant |
| Direction Control | DIR pin |
| Output Type (GTL side) | Open-drain, low-swing GTL |
| Trạng thái vòng đời | End of Life (per NXP product page) |
Hướng dẫn cấu hình chân GTL2018PW-Q900118 tssop-24 (sot355-1, mo-153, 4.40 mm body width)
Cấu hình chân cho GTL2018PW-Q900118 (tssop-24 (sot355-1, mo-153, 4.40 mm body width) gói). IC số này bao gồm chân GPIO, giao diện truyền thông (UART, SPI, I2C) và chân nguồn. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết các chức năng chân thay thế và tùy chọn cấu hình. Cực kỳ quan trọng cho thiết kế hệ thống tích hợp và lập trình PCB.
Không có dữ liệu chân cụ thể sẵn có cho GTL2018PW-Q900118.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
GTL2018PW-Q900118 phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho GTL2018PW-Q900118 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Q900 automotive quality screening (vsGTL2018PW,118)
- 5.5 V tolerant LVTTL inputs (vsGTL2018PW)
- Octal integration density (vsdiscrete GTL translation stages)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.
