MC14C88BP - Quad Low-Power RS-232 Driver | onsemi
N.º da peça: MC14C88BP ✓ AtivoMC14C88BP Visão geral
A quad RS-232 line driver converts TTL or CMOS logic signals into differential RS-232-compatible levels. In the interface hierarchy, an RS-232 driver sits between digital logic and a communication transceiver, with the complete transceiver combining drivers, receivers, and signal conditioning. This device is useful where one controller must connect to four separate data, control, or handshake lines without using four single-channel driver packages.
The BiMOS process combines bipolar output drive with CMOS-compatible input circuitry. This supports low quiescent current while maintaining the voltage swing and transition behavior required by RS-232 interfaces. Inputs accept both TTL and CMOS levels with minimal loading, while internal slew-rate control limits unwanted high-frequency energy on the driven lines. These characteristics make the MC14C88BP appropriate for low-power industrial control, instrumentation, and embedded communication equipment.
Each channel provides one driver output, allowing four logic signals to be translated independently. Internal slew-rate control helps reduce edge-rate problems that can otherwise produce ringing, crosstalk, or electromagnetic interference on long cables. The device's low-power design is particularly valuable in battery-operated or power-constrained systems where every milliwatt of static consumption affects operating time or thermal design.
Typical uses include RS-232 port expansion, industrial controller interfaces, test and measurement equipment, and embedded systems that require four RS-232 outputs. The part can also support point-to-point links when several channels remain unused. In each case, system designers should confirm output levels, grounding, cable length, and interface requirements against the original equipment specification.
For reliable PCB implementation, place the MC14C88BP in the same orientation as the reference design and observe the datasheet's supply and ground connections. Decoupling capacitors should be placed close to the power pins, while unused driver inputs must be tied to a defined logic level. Because RS-232 is unbalanced, grounding and cable routing remain important even though the driver itself internally controls output slew rate.
This product record combines the MC14C88BP's functional characteristics with application guidance, engineering cautions, and verified drop-in references. It also distinguishes explicitly identified compatible parts from options that are merely similar, helping engineers assess PCB reuse, supply planning, and signal-interface integrity before making a replacement decision.
Alternativas drop-in para MC14C88BP — 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 MC14C88BP (mesmo formato e footprint) — diferindo em Mounting Type, Number of Drivers.
MC1488NE4
✅ Drop-InConsulte o preço
Ver ficha técnica →DS1488
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
MC14C88BP Especificações
| Device Type | Quad low-power RS-232 line driver |
| Technology | BiMOS |
| Number of Drivers | 4 channels |
| Input Compatibility | TTL and CMOS |
| Input Loading | Minimal |
| Output Slew Rate | Internally controlled |
| Power Consumption | < 5.0 mW |
| Corrente de repouso | < 160 uA |
| EIA-232-D Compliance | Conforms |
| EIA-562 Compliance | Conforms |
| CCITT V.28 Compliance | Conforms |
| Package Type | 14-pin plastic DIP |
| Tipo de montagem | Through-hole |
Guia de Configuração de Pinos do MC14C88BP 14-pin plastic dip
Configuração de pinos para MC14C88BP (pacote 14-pin plastic dip). 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 MC14C88BP.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
MC14C88BP é adequado para 6 aplicaçãos: Industrial RS-232 Controller Interface, Multichannel Data Port Expansion, Test and Measurement Equipment, Embedded Communication Equipment, Point-to-Point Serial Links, Legacy Equipment Communication Retrofit.
Industrial RS-232 Controller Interface
The MC14C88BP fits an industrial controller that must convert four TTL or CMOS logic signals into RS-232-compatible outputs. Its four driver channels reduce the component count compared with four single-channel devices, while operation below 5.0 mW and quiescent current below 160 uA support power-conscious controller designs. Internally controlled slew rate helps limit ringing and electromagnetic interference on board-level connections. The designer should pair the driver with the connector protection network, grounding scheme, and any receiver required by the communication architecture.
Recomendado
Multichannel Data Port Expansion
The MC14C88BP can expand a digital controller with four separately driven RS-232 lines for data, status, and handshake signals. Its monolithic quad BiMOS implementation places four channels in one 14-pin DIP, reducing board area and simplifying the shared supply arrangement. TTL and CMOS-compatible inputs allow connection to common embedded logic, and internal slew-rate control improves signal-edge behavior. Each unused output should be left in the state recommended by the manufacturer logic table, while signal grounds should follow the equipment's interface-reference design.
Recomendado
Test and Measurement Equipment
The MC14C88BP is useful in test and measurement instruments that require several low-power RS-232 outputs for instrument control or status reporting. Four channels can drive separate control commands without duplicating the driver circuitry, and the below-5.0 mW power figure reduces system-level thermal burden. Internal slew-rate control provides more controlled transitions than unrestricted RS-232 outputs, which is advantageous when cables or test fixtures create capacitive loading. System designers must still verify timing, grounding, and protection requirements for the specific connector configuration.
Recomendado
Embedded Communication Equipment
The MC14C88BP suits embedded systems needing multiple RS-232 outputs from a microcontroller or programmable logic interface. Its TTL- and CMOS-compatible inputs minimize logic interfacing complexity, while quiescent current below 160 uA helps preserve power budgets in embedded products. The four-channel quad arrangement supports concurrent control and status lines or a mixture of communications and supervisory signals. Firmware designers should define safe states for inactive channels, and hardware engineers should confirm that the external connector protection scheme can handle the intended cable environment.
Recomendado
Point-to-Point Serial Links
Although designed as a quad driver, MC14C88BP can support a point-to-point interface when only one or two channels are active. Its low-power operation preserves system headroom, and internal slew-rate control limits unwanted edge energy on the driven line. Additional active channels increase switching activity and therefore dynamic power, so the final thermal budget should reflect the intended data rate and workload. Firmware should avoid unnecessary toggling and maintain defined levels on unused inputs to prevent unpredictable outputs.
Recomendado
Legacy Equipment Communication Retrofit
The MC14C88BP is appropriate when maintaining or expanding a legacy RS-232 interface in existing equipment. The 14-pin plastic DIP package supports through-hole construction and the manufacturer explicitly identifies pin-compatible replacement families, which helps engineers evaluate board reuse. Before substitution, compare the complete connection tables because legacy RS-232 drivers may differ in enable handling, supply pins, and behavior of unused channels. The retrofit should retain the original grounding and protection strategy unless the updated interface specification permits improvements.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para MC14C88BP — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | MC1488NE4 | DS1488 |
|---|---|---|---|
| Package | 14-pin plastic DIP | 14-pin plastic DIP | 14-pin plastic DIP |
| Brand | onsemi | onsemi | Texas Instruments |
| Function | Quad low-power RS-232 line driver | Quad RS-232 line driver | Quad RS-232 line driver |
| Driver Channels | 4 | 4 | 4 |
| Interface Standards | EIA-232-D, EIA-562, CCITT V.28 | RS-232-compatible line driver | RS-232-compatible line driver |
Principais diferenciais
- Lower specified standby demand (vs MC1488NE4)
- Documented interface conformance (vs DS1488)
- Four-channel integration in one package (vs MC1488NE4)
- Controlled output transitions (vs DS1488)
Notas de projeto
Follow the manufacturer pin-description table when assigning the 14-pin DIP footprint, including all supply, ground, and unused inputs. Keep the package orientation consistent with the printed pin-1 mark and the board's silkscreen. Place the required supply-decoupling capacitor close to the device's supply and ground pins, and route each driver output directly toward its associated interface network rather than sharing long traces with unrelated digital signals.
Do not treat every device named in the compatibility statement as an automatic same-footprint replacement. SN75188, SN75C188, and DS14C88 may provide related functions while differing in package or enable arrangements. Verify pin names, dimensions, supply limits, output voltage levels, and unused-input behavior for MC1488NE4 or DS1488 before approving a PCB substitution.
Use the internally controlled output transitions to minimize ringing and high-frequency energy on RS-232 lines. Keep driver outputs away from clocks, switching-regulator nodes, and sensitive analog inputs, and route the interface ground according to the equipment grounding plan. External protection and filtering should be selected for the actual cable length, connector exposure, and ESD environment rather than added only at the IC pins.
Estimated: power dissipation is approximately VIN multiplied by total supply current when the output load is negligible. For example, at a 5 V supply and 100 uA total current, the estimated dissipation is 0.0005 W. Confirm the actual supply voltage and dynamic current in the final design; the device is specified below 5.0 mW under the manufacturer's stated conditions.
Informações de conformidade
No specific RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations were identified for MC14C88BP.
