MC3486NS - Quad Differential RS-422/423 Receiver | Texas Instruments
N.º da peça: MC3486NS ✓ AtivoMC3486NS Visão geral
A differential line receiver is an interface IC that compares two complementary conductors, rejects common-mode voltage and noise, and converts the resulting logic state into a single-ended digital output. In the signal-processing hierarchy, the MC3486NS belongs to the receiver family within line-driver and receiver interface ICs, which ultimately fall under interface ICs and semiconductors. Its four channels allow one package to replace four discrete differential receiver sections while preserving a standardized balanced-line interface.
Key features include four differential receivers, TTL-compatible outputs, selectable 3-state output operation, operation from a single 5 V supply, and compatibility with TIA/EIA-422-B, TIA/EIA-423-B, ITU V.10, and ITU V.11 requirements. The 3-state outputs allow several devices to share a bus when the system controller can place individual receivers in a high-impedance state. The 16-pin surface-mount package supports compact circuit layouts while preserving conventional through-hole-equivalent pin organization.
The MC3486 is designed for optimum operation with the MC3487 quadruple differential line driver, providing a complete four-channel transmit-and-receive solution for balanced communications. Its differential input architecture is valuable where cables may pick up noise or where logic devices share a common ground reference. The receiver translates that differential information into TTL-compatible logic suitable for programmable logic controllers, microprocessors, counters, and other digital control systems.
Typical uses include industrial automation equipment, RS-422-compatible control links, data acquisition systems, test and measurement instruments, and embedded control equipment requiring several differential inputs. In a four-wire RS-422 interface, the MC3486NS can receive four balanced signals while a corresponding MC3487 family driver transmits the opposite-direction signals. This arrangement supports full-duplex communication over a cable carrying multiple data and control lines.
The principal design consideration is correct enable and termination management. The available verified information identifies 3-state outputs but does not provide the detailed enable truth table or pin-level values, so those items must be confirmed in the manufacturer datasheet before implementation. Differential-pair routing, solid grounding, and appropriate cable termination are also essential because receiver performance depends on the physical signal path as well as the IC.
This page combines verified manufacturer and distributor information with package guidance, application-oriented analysis, and a drop-in cross-reference assessment. It also distinguishes confirmed substitutes from parts that are only functionally related, helping engineers avoid selecting a driver or a mechanically incompatible package as a receiver replacement.
Alternativas drop-in para MC3486NS — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com MC3486NS (mesmo formato e footprint) — diferindo em Logic Compatibility, Operating Temperature Range, Output Type.
MC3486DR
✅ Drop-InConsulte o preço
Ver ficha técnica →MC3486NS Especificações
| Receiver Type | Quadruple differential line receiver |
| Number of Receiver Channels | 4 channels |
| Independent Differential Inputs | 4 independent differential-input pairs |
| Tensão de alimentação | 5 V single supply |
| Tipo de saída | TTL-compatible, 3-state |
| Input Standard Compatibility | TIA/EIA-422-B and TIA/EIA-423-B |
| ITU Recommendation Compatibility | ITU V.10 and V.11 |
| Faixa de temperatura de operação | 0 C to 70 C |
| Encapsulamento | 16-pin SOIC |
| Tipo de montagem | Surface mount |
| Device Type | Line receiver |
| Logic Compatibility | TTL-compatible |
| High-Impedance Output State | Available through 3-state output circuitry |
| Recommended Companion Driver | MC3487 family |
Guia de Configuração de Pinos do MC3486NS 16-pin soic
Configuração de pinos para MC3486NS (pacote 16-pin soic). A numeração dos pinos, funções e diagramas de conexão estão definidos no datasheet do fabricante. Consulte-o para o footprint exato e diretrizes de soldagem.
Nenhum dado detalhado de pinagem disponível para MC3486NS.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
MC3486NS é adequado para 6 aplicaçãos: Industrial RS-422 Control Interfaces, Full-Duplex Balanced Data Communication, Data Acquisition and Instrumentation, Embedded Automation Controllers, Test and Measurement Equipment, Multi-Channel Balanced Sensor Links.
Industrial RS-422 Control Interfaces
The MC3486NS fits industrial RS-422 control interfaces because it decodes four differential channels into TTL-compatible logic while supporting TIA/EIA-422-B and TIA/EIA-423-B signaling. A common implementation places the receiver near a connector, routes each balanced pair as a coupled signal, and returns the resulting digital states to a PLC, counter, or microcontroller. The 3-state outputs also allow the receiver to participate in controlled multi-device bus arrangements. The 5 V single-supply requirement simplifies system power planning, while the 16-pin SOIC package keeps the receiver compact. Engineers should confirm common-mode limits, input thresholds, enable timing, and termination values in the manufacturer datasheet before releasing a production schematic.
Recomendado
Full-Duplex Balanced Data Communication
The MC3486NS is well suited to the receiving side of a full-duplex balanced communication link, pairing with the MC3487 family when separate transmit and receive paths are required. Its four independent differential inputs allow four signals to cross a noisy cable environment and emerge as TTL-compatible outputs at the controller. Differential reception helps reject common-mode disturbance that could affect single-ended logic. The 3-state capability provides an additional mechanism for sharing a digital bus, provided the controller correctly manages enable timing. Designers should route each differential pair with consistent geometry, provide a solid reference ground, and validate cable termination against the selected baud rate and line impedance.
Recomendado
Data Acquisition and Instrumentation
The MC3486NS can serve as the interface between balanced sensor or measurement signals and digital acquisition logic in industrial instrumentation. Four differential inputs reduce the sensitivity of the receiver to common-mode voltage and coupled noise when external equipment connects through cables. Its TTL-compatible outputs can feed counters, programmable logic, or a microcontroller input section, while the 3-state outputs provide flexibility for multiplexed data paths. The single 5 V supply aligns with many legacy measurement systems, and the 16-pin SOIC package supports dense analog and digital boards. Signal-integrity review should include input protection, cable return paths, termination placement, and grounding around the receiver pins.
Recomendado
Embedded Automation Controllers
The MC3486NS is applicable in embedded automation controllers that receive several differential status, command, or sensor signals from field equipment. Its four receiver channels consolidate separate input functions into one IC, while TTL-compatible outputs can be routed to a microcontroller or programmable logic device. Operation from one 5 V rail simplifies interfacing with digital controllers that already use 5 V logic. The available 3-state outputs can also assist in bus-sharing designs when properly sequenced. Because the device is characterized from 0 C to 70 C, it is intended for commercial rather than extended-temperature industrial environments; systems operating beyond that range should select a part with an explicitly documented wider temperature grade.
Recomendado
Test and Measurement Equipment
The MC3486NS is suitable for test and measurement equipment that must interpret balanced outputs from remote instruments, fixtures, or automated test systems. Four differential receiver channels can reduce the number of external interface components while preserving noise-tolerant balanced signaling. The TTL-compatible outputs make the device convenient for legacy counter and logic platforms, and the 3-state outputs can help connect multiple receiver sections to shared resources under software or hardware control. The 5 V supply and 16-pin surface-mount package are convenient for compact instrument electronics. Designers should still evaluate input settling behavior, enable timing, maximum cable length, and termination using the complete Texas Instruments datasheet and system-level channel requirements.
Recomendado
Multi-Channel Balanced Sensor Links
The MC3486NS can receive four balanced sensor or transducer signals where low-noise differential transmission is preferable to single-ended wiring. This approach is useful when sensors, amplifiers, or remote I/O modules are connected over cables that may share ground potential with the controller. The receiver converts those differential inputs into TTL-compatible levels for digital monitoring, while the 3-state outputs offer additional bus-control flexibility. Because each input pair should be routed as a coupled pair, PCB layout must minimize loop area and avoid routing through noisy power-switching regions. Input protection, reference grounding, and cable termination should be selected with the actual sensor output amplitude and common-mode environment in mind.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para MC3486NS — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | MC3486DR |
|---|---|---|
| Brand | Texas Instruments | Texas Instruments |
| Package | SOIC-16 | SOIC-16 |
| Receiver Channels | 4 | 4 |
| Supply Voltage | 5 V | 5 V |
| Output Type | TTL-compatible with 3-state outputs | TTL-compatible with 3-state outputs |
| TIA/EIA-422-B Compatibility | Meets or exceeds requirements | Meets or exceeds requirements |
| ITU Recommendation Support | V.10 and V.11 | V.10 and V.11 |
| Function | Quad differential line receiver | Quad differential line receiver |
Principais diferenciais
- Four independent differential receivers in one package (vs MC3486DR)
- TTL-compatible 3-state outputs (vs MC3486DR)
- Standard-compatible balanced reception (vs MC3486DR)
Notas de projeto
Route each differential input as a tightly coupled pair, maintaining consistent spacing and avoiding discontinuities that would unbalance the receiver's common-mode rejection. Keep the receiver close to the connector or cable-entry point so that susceptible differential signals do not cross switching nodes or high-current return paths. Provide a continuous ground reference and place return-path vias close to the signal-return conductor to reduce loop area.
Termination belongs at the receiving end of a balanced line and must be calculated for the cable impedance, topology, and baud rate rather than copied blindly. Confirm that the selected termination, protection network, and receiver input network preserve the differential signal amplitude and common-mode range. This recommendation is based on the MC3486 differential receiver architecture; the complete Texas Instruments datasheet should govern exact input limits and application details.
Do not treat MC3487NS as a drop-in replacement for MC3486NS: the MC3487 is the line driver, while the MC3486 is the receiver. Likewise, confirm the physical package before using a quad receiver from another manufacturer. The supplied cross-reference results did not verify five distinct same-package receiver substitutes, so procurement should focus on documented MC3486 orderable variants and validate any cross-brand candidate for pin functions, supply range, thresholds, enable polarity, and temperature grade.
Place bypass capacitance close to the device supply and ground pins and keep the high-current return path compact. Avoid separating the 5 V supply connection from its ground reference with long traces or plane transitions. Because the supplied verified snippets do not include the recommended capacitor values or a complete pinout, follow the decoupling and layout guidance in the official MC3486 datasheet and the specific MC3486NS ordering documentation.
Informações de conformidade
The supplied verified snippets identify the device and its standards compatibility but do not provide RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations. The device is characterized for 0 C to 70 C; it is not presented as an AEC-Q100 automotive-qualified option in the verified data.