MPC508AUG4 - 8:1 ±15V Overvoltage-Protected Analog MUX | Texas Instruments
Артикул: MPC508AUG4 ✗ Снят с производстваMPC508AUG4 Обзор
An analog multiplexer is a semiconductor switching network that connects one of several input terminals to a shared output. In the broad electronics hierarchy, it belongs to analog switches and multiplexers, which are interface ICs used to route signals among sensors, amplifiers, converters, and test equipment. The MPC508AUG4 can support eight single-ended channels or four differential channels, making it useful where multiple inputs must be measured through a common signal chain without duplicating amplifiers or converters.
The principal features include 70 Vpp overvoltage protection, a stated analog signal range of ±15 V, 1.5 kOhm on-resistance, and break-before-make operation. The protection circuit allows an analog input to exceed a supply voltage without damaging the device or disturbing the signal path of other channels. Standby power is specified as 7.5 mW typical, making the part suitable for multiplexed systems that disable the analog path during inactive intervals.
The device uses CMOS switching elements with separate control logic for selecting the single-ended or differential operating mode. Break-before-make behavior prevents two channels from being connected simultaneously during a transition, reducing signal contention and preserving channel isolation. The overvoltage protection is particularly relevant in external analog systems where transients or wiring errors may exceed the nominal rail-to-rail operating range.
Typical uses include multiplexed data acquisition, automated test equipment, industrial process monitoring, instrumentation, and communication or control boards with multiple analog inputs. In each case, the shared output can feed a downstream amplifier, sample-and-hold circuit, or ADC, while the multiplexer reduces the number of analog front-end channels required. Differential operation is useful when the source signals require common-mode rejection or when the selected pair must be treated as one differential measurement.
Designers should verify address-decoder transitions, supply sequencing, input overvoltage conditions, and the intended single-ended or differential wiring against the manufacturer datasheet. The 16-pin SOIC footprint simplifies assembly, but signal-path layout and grounding remain important because high-impedance multiplexed nodes can couple noise from adjacent digital control traces.
This page combines verified manufacturer and distributor information with same-package alternatives, a practical comparison table, and application-specific design guidance. It also separates documented electrical values from parameters that require confirmation from the datasheet, helping engineers identify what is known and what must be checked before layout or purchasing decisions.
Аналоги без доработки для MPC508AUG4 — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
MPC508AU
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
DG508ACWE
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ADG508AKRZ
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ADG508ABRZ
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
MPC508AUG4 Характеристики
| Product Type | 8:1 CMOS analog multiplexer |
| Single-Ended Channel Count | 8 channels |
| Differential Channel Count | 4 channels |
| Number of Circuits | 1 circuit |
| On-Resistance | 1.5 kOhm |
| Analog Signal Range | ±15 V |
| Analog Overvoltage Protection | 70 Vpp |
| Switching Behavior | Break-before-make |
| Overvoltage Channel Interaction | No channel interaction during overvoltage |
| Standby Power | 7.5 mW typical |
| Корпус | 16-pin SOIC |
| Тип монтажа | Surface mount |
| Статус RoHS | RoHS compliant |
| Lead-Free Status | Lead free |
Руководство по цоколевке MPC508AUG4 в корпусе 16-pin soic
Цоколевка для MPC508AUG4 (корпус 16-pin soic). Нумерация выводов, функции и схемы подключения определены в техническом описании производителя. Обратитесь к нему для точного посадочного места и рекомендаций по пайке.
Нет подробных данных о распиновке для MPC508AUG4.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
MPC508AUG4 подходит для 6 применениеs: Multiplexed Data Acquisition, Automated Test Equipment, Industrial Process Monitoring, Instrumentation and Signal Conditioning, Analog Communication Interfaces, Interface Protection and Fault Routing.
Multiplexed Data Acquisition
The MPC508AUG4 fits data-acquisition systems that must route eight single-ended sources or four differential source pairs into one shared analog-processing channel. Its 8:1 architecture reduces the number of separate amplifiers and converters required when several sensors or measurement nodes share similar conditioning. The stated ±15 V signal range supports bipolar instrumentation signals, while the 1.5 kOhm on-resistance limits the shunt loading introduced at the selected input. Its 70 Vpp overvoltage protection is valuable when external wiring can present larger transients than the nominal operating range. The multiplexer should sit close to the protected input connectors, with the selected output routed toward the downstream ADC front end.
Рекомендуется
Automated Test Equipment
The MPC508AUG4 is well suited to automated test equipment that scans several DUT pins, fixture nodes, or programmed sources through a common measurement path. Eight single-ended inputs can be selected by the address-control circuitry, reducing the number of analog switches required at the fixture interface. The documented ±15 V range accommodates many industry-standard analog test levels, and break-before-make switching helps prevent channel contention during address transitions. Overvoltage protection improves system resilience if a fixture fault drives an input beyond the normal signal range. Layout should keep the analog output away from address-control traces and provide a low-impedance return path to minimize crosstalk during test sweeps.
Рекомендуется
Industrial Process Monitoring
The MPC508AUG4 can consolidate multiple industrial process signals into a shared controller or measurement channel. It supports eight single-ended inputs for pressure, temperature, position, or level signals, as well as four differential pairs when common-mode rejection is important. The 1.5 kOhm on-resistance is suitable for many medium-impedance sensor interfaces, although the complete application impedance and bandwidth must be checked against the datasheet. The 70 Vpp protection rating helps isolate one abnormal input from the other channels during fault conditions. In a factory environment, the analog input section should be physically separated from switching-node and digital-control traces to preserve measurement integrity.
Рекомендуется
Instrumentation and Signal Conditioning
The MPC508AUG4 fits instrumentation systems that must select among several external measurement channels before amplification, filtering, or conversion. Eight single-ended inputs offer a compact way to build a multi-range or multi-sensor instrument, while the differential configuration supports paired outputs and improved rejection of common-mode voltage. The stated ±15 V analog range accommodates many laboratory and industrial signals, and the protected input architecture helps preserve signal fidelity when voltage excursions occur. Because the 1.5 kOhm switch resistance can affect high-impedance sources, the selected source impedance, amplifier input bias current, and required settling time should be evaluated together before finalizing the signal chain.
Рекомендуется
Analog Communication Interfaces
The MPC508AUG4 can route multiple analog communication or monitoring inputs into a common receiver chain when a compact 16-pin SOIC implementation is preferred. The ±15 V signal range supports bipolar external interfaces, while the protected inputs help prevent one line from disturbing the remaining channels during an electrical fault. Eight single-ended channels are useful for monitoring several lines, and four differential pairs can support balanced receiver inputs. Break-before-make operation provides controlled transitions during address changes, reducing the chance of simultaneous channel contention. The analog output and input return paths should remain compact and quiet, with digital address lines kept away from high-impedance nodes to minimize capacitive coupling.
Рекомендуется
Interface Protection and Fault Routing
The MPC508AUG4 is useful in analog interfaces where external connectors can expose inputs to voltages above the device's supply rails. Its documented 70 Vpp overvoltage protection is intended to prevent damage to the multiplexer and limit disturbance of the signal paths of other channels. That property makes it relevant for protected test fixtures, industrial input modules, and external wiring interfaces where faults are credible. The protection feature does not remove the need for correct supply sequencing, input current limiting, or application-level surge protection. Engineers should confirm the absolute maximum ratings and protected-input operating conditions in the manufacturer datasheet before placing the device at a connector boundary.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для MPC508AUG4 — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | MPC508AU | DG508ACWE | ADG508AKRZ | ADG508ABRZ |
|---|---|---|---|---|---|
| Package | 16-pin SOIC | 16-pin SOIC | 16-pin SOIC | 16-pin SOIC | 16-pin SOIC |
| Brand | Texas Instruments | Texas Instruments | Vishay Intertechnology | Analog Devices | Analog Devices |
| Multiplexer Configuration | 8:1 single-ended or 4:1 differential | 8-channel single-ended or 4-channel differential | 8-channel analog multiplexer | 8-channel analog multiplexer | 8-channel analog multiplexer |
Ключевые отличия
- Documented input overvoltage protection (против ADG508AKRZ)
- True second-source architecture (против DG508ACWE)
- Direct single-ended and differential flexibility (против MPC508AU)
- Break-before-make channel transitions (против ADG508ABRZ)
Заметки по проектированию
Place the MPC508AUG4 close to the protected analog connectors and the shared downstream signal chain. Keep the eight input routes short, preserve a continuous ground reference beneath the analog region, and route address-control traces away from the multiplexer output and high-impedance inputs. This arrangement minimizes parasitic capacitance, connector-induced transients, and crosstalk between the digital selection logic and the analog signal path.
Treat the 70 Vpp overvoltage capability as input protection rather than a substitute for application surge protection. Verify the datasheet limits for input current, continuous overvoltage duration, supply range, and power-off behavior before connecting external nodes. Add the appropriate series impedance, clamp network, or upstream protection device when a connector can receive uncontrolled energy.
The stated 1.5 kOhm on-resistance forms part of the source load seen by the selected channel. Check it against the sensor output impedance, downstream amplifier input impedance, required settling time, and available signal bandwidth. For high-impedance sources, guard the routing and provide a defined input bias path so that leakage and board contamination do not degrade the selected measurement.
Do not assume that identical SOIC footprints guarantee identical multiplexer behavior. Address-decoder polarity, enable logic, differential-versus-single-ended wiring, switch timing, supply thresholds, and overvoltage limits must be checked for MPC508AU, DG508ACWE, ADG508AKRZ, or ADG508ABRZ before substituting them. Confirm the pinout and truth table rather than relying only on package dimensions.
Информация о соответствии
The verified specification listing identifies the MPC508AUG4 as RoHS compliant and lead free. REACH, halogen-free status, AEC-Q100 qualification, and conflict-minerals status are not stated in the supplied data.