MPC507AU - 8:1 Differential Multiplexer | Texas Instruments
MPN: MPC507AU ✓ ActiveMPC507AU Overview
An analog multiplexer is an interface IC that selects one signal path from multiple inputs and connects that path to an output. In the broader hierarchy, the MPC507AU belongs to the analog switch and multiplexer family, then to interface ICs and semiconductors. Multiplexers reduce analog channel count in measurement systems by sharing downstream converters, amplifiers, or instrumentation equipment while preserving the selected source at the output.
The verified manufacturer information identifies analog overvoltage protection, no channel interaction during an overvoltage condition, break-before-make switching, and standby power of 7.5 mW typical. These features distinguish the device from ordinary passive analog switches. Overvoltage protection helps preserve signal fidelity when an input temporarily exceeds a supply rail, while break-before-make operation prevents two channels from being connected together during selection changes. The 1.5 kΩ on-resistance is the principal dynamic limitation and should be included in input-impedance and settling calculations.
Typical uses include multiplexed industrial measurement, process-control input modules, automated test equipment, data-acquisition systems, and differential sensor interfaces. The MPC507AU is especially appropriate when several bipolar or differential sources must share a common analog front end. Its overvoltage behavior and standby power make it useful in systems that need channel isolation and reduced dissipation between measurements, although the relatively high on-resistance makes it better suited to higher-impedance sources than low-impedance precision bridges.
Layout should keep analog traces short, provide a solid ground reference, and keep switching and digital control circuitry away from sensitive multiplexer inputs. Designers should evaluate source impedance against the 1.5 kΩ on-resistance, allow time for the selected channel to settle, and use break-before-make timing when changing selections. The 28-pin SOIC footprint provides a conventional surface-mount solution for equipment where trace length and grounding can be controlled.
This page consolidates the verified distributor and manufacturer information, distinguishes the differential multiplexer from single-ended devices, and highlights the practical overvoltage, settling, impedance, and layout considerations that are not apparent from the part number alone. Pricing and detailed electrical limits remain dependent on the current authorized distributor listings and manufacturer datasheet.
Drop-in alternatives for MPC507AU — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MPC507AU (same form factor and footprint) — differing in Analog Overvoltage Protection, Package.
MPC507AUG4
✅ Drop-InContact for price
View Datasheet →MPC507AU Specifications
| Multiplexer Configuration | 8:1 |
| Multiplexer Type | 8-channel differential |
| Number of Circuits | 2 circuits |
| On-Resistance | 1.5 kΩ |
| Nominal Supply Voltage Range | ±5 V to ±22 V |
| Analog Signal Range | ±15 V |
| Supply Voltage | 16 V |
| Number of Pins | 28 pins |
| Package | SOIC-28 |
| Mounting Type | Surface mount |
| Analog Overvoltage Protection | Supported |
| Channel Interaction During Overvoltage | No channel interaction |
| Switching Method | Break-before-make |
| Standby Power | 7.5 mW typical |
| Temperature Grade | Industrial |
MPC507AU soic-28 Pin Configuration Guide
Pin configuration for MPC507AU (soic-28 package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for MPC507AU.
Refer to the datasheet for full pin configuration.
Typical Applications
MPC507AU is suitable for 6 applications: Industrial Process Measurement, Automated Test Equipment, Data Acquisition Systems, Instrumentation Signal Conditioning, Control-System Input Modules, Sensor Interface Multiplexing.
Industrial Process Measurement
The MPC507AU suits industrial process-measurement modules that must select among multiple bipolar or differential sensor signals before amplification and conversion. Its 8:1 differential architecture reduces the number of analog input connections required, while analog overvoltage protection helps maintain channel isolation if a field input temporarily exceeds the supply range. The 1.5 kΩ on-resistance is the principal tradeoff and works best with relatively high-impedance sources. Engineers should confirm that the selected front end can tolerate that resistance, allow adequate settling after each selection, and provide a low-impedance reference path for the differential input.
Automated Test Equipment
In automated test equipment, the MPC507AU can route one of eight differential DUT or instrument signals into a shared measurement chain, reducing the number of relays, amplifiers, or converters otherwise required. Break-before-make switching is valuable because it prevents two channels from being shorted together during a test-point transition. The 7.5 mW typical standby power supports repeatable fixture operation where idle dissipation matters. The main design consideration is signal settling: with 1.5 kΩ on-resistance, source capacitance and downstream input capacitance should be checked to determine the required guard time between selections.
Data Acquisition Systems
The MPC507AU is applicable to multichannel data-acquisition systems that scan paired analog inputs and share a common amplifier, ADC, or instrument amplifier. Differential multiplexing is especially useful when the source can be represented as a signal plus return rather than a single voltage referenced to ground. The device's approximately ±5 V to ±22 V supply range and ±15 V analog signal capability support bipolar signal conditioning. Designers should calculate the attenuation and loading caused by the 1.5 kΩ on-resistance and place any required gain or buffering before, rather than after, multiplexing when source impedance is low.
Instrumentation Signal Conditioning
The MPC507AU can select among eight differential instrumentation inputs while protecting the signal path during transient overvoltage conditions. Its no-channel-interaction behavior helps maintain fidelity in multiplexed systems where one input may temporarily exceed the supply rails. The break-before-make characteristic also supports controlled source selection without intentionally connecting adjacent channels together. Because the mux adds 1.5 kΩ in the conducting path, the instrumentation amplifier or ADC input should present high impedance, and the source impedance should be included in the noise-gain and settling analysis.
Control-System Input Modules
The MPC507AU can serve as the analog input selector in a compact industrial control module handling several bipolar command or feedback signals. Analog overvoltage protection is valuable when wiring reaches field equipment, and the 8:1 differential configuration reduces rear-panel connector density. The common-mode and differential input limits must be checked against the specific controller and signal sources before use. Designers should also account for the 1.5 kΩ on-resistance in the control-loop transfer function and maintain a common, low-impedance ground reference throughout the analog section.
Sensor Interface Multiplexing
The MPC507AU can select among eight differential sensor channels in a multichannel monitoring system, including resistive, current-sense, or other bipolar sensor interfaces. Differential routing helps reject common-mode disturbance when each source includes a paired return. The nominal 16 V supply and approximately ±5 V to ±22 V operating range make the device suitable for higher-voltage acquisition systems. Source impedance remains important because the 1.5 kΩ on-resistance can alter gain if the sensor output resistance is appreciable. A buffer or instrumentation amplifier should be selected when the source impedance is too low for the resulting loading.
Engineering reference data for MPC507AU — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MPC507AUG4 |
|---|---|---|
| Brand | Texas Instruments | Texas Instruments |
| Package | 28-pin SOIC | 28-pin SOIC |
| Multiplexer Configuration | 8:1 | 8:1 |
| Input Architecture | 8-channel differential | 8-channel differential |
| Number of Circuits | 2 circuits | 2 circuits |
Key Differentiators
- Differential channel architecture (vs MPC507AUG4)
- Explicit analog overvoltage protection (vs MPC507AUG4)
- Break-before-make channel switching (vs MPC507AUG4)
Design Notes
Account for the 1.5 kΩ on-resistance before selecting the downstream amplifier or converter. The conducting mux path forms part of the source impedance, which can reduce gain, increase thermal noise contribution, and introduce asymmetry between differential inputs. Use high-impedance downstream circuitry or add a buffer when the source impedance is low. Do not treat the listed 1.5 kΩ figure as sufficient evidence of exact resistance variation over the full signal range; consult the manufacturer datasheet.
Route the eight differential input channels as closely matched pairs and provide a continuous ground plane beneath the SOIC. Keep the analog pins and traces away from relay coils, clock lines, switching-node copper, and high-current return paths. Because the mux includes overvoltage protection but still presents a finite switching impedance, incorrect grounding or excessive trace coupling can affect signal integrity even when the selected channel is inactive.
Include both source impedance and downstream capacitance when determining channel-settling time. With a 1.5 kΩ on-resistance, the effective charging path can be substantially slower than in a low-resistance CMOS switch. The verified break-before-make characteristic prevents unintended channel overlap, but the system still needs a valid dead time between selection commands. Validate settling with the actual source, cable, protection network, and acquisition front end rather than relying only on nominal mux timing.
Compliance Information
The Abacus Technologies catalog entry reports EU RoHS compliance, REACH compliance, PFAS: no, and conflict-free DRC status. Other declarations were not present in the supplied verified data.
