MPC506 - 16-Ch ±15V CMOS Analog Multiplexer | Texas Instruments
料号： MPC506 ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $6.9 | $6.90 |
| 10 | $6.21 | $62.10 |
| 100 | $5.52 | $552.00 |
| 500 | $4.83 | $2,415.00 |
| 1,000 | $4.41 | $4,410.00 |
MPC506 概述
An analog multiplexer is a semiconductor device that selects one of several analog input signals and routes it to a single output, controlled by digital address lines. It is a fundamental building block in data acquisition systems, enabling multiple sensors or signal sources to share a single ADC or amplifier. Multiplexers belong to the broader category of analog switches and are essential where signal routing, channel expansion, or test automation is required.
Key features include break-before-make switching to prevent channel interaction, low standby power of 7.5mW typical, and a 1.5kOhm on-resistance. The device supports a ±15V analog signal range and provides overvoltage protection without channel interaction, making it suitable for harsh industrial environments. CMOS fabrication ensures low power consumption and high input impedance.
Fabricated in CMOS technology, the MPC506 provides low leakage currents and high input impedance, preserving signal integrity. The internal 1kOhm series resistance protects the device from overvoltage conditions up to 70Vpp, eliminating external protection components in many applications. Break-before-make switching ensures the output is never momentarily connected to two inputs simultaneously, preventing signal corruption.
Typical applications include data acquisition systems, test and measurement equipment, industrial process control, and medical instrumentation. The MPC506 is ideal for routing multiple analog signals to a single ADC, expanding channel count in a measurement system, or implementing programmable gain amplifier configurations.
When designing with the MPC506, ensure analog input signals remain within the specified ±15V range to avoid damage. Drive the digital address lines with proper logic levels, and buffer the output if driving a capacitive load to maintain stability.
直接替换替代料： MPC506 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
快速对比工具——选择替代料号进行并排对比：
MPC507A
⚡ 相同封装📋 参考替代料（不在目录中）
ADG506A
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
DG506A
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
HI-506A
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MPC506 最大额定值与电气特性
| 功能 | 16:1 Single-Ended Analog Multiplexer |
| Number of Channels | 16 (single-ended) |
| Circuits per IC | 1 |
| On-Resistance | 1.5 kOhm |
| Analog Signal Range | ±15 V |
| Overvoltage Protection | 70 Vpp via internal 1 kOhm series resistance |
| Standby Power | 7.5 mW typ |
| Switching Behavior | Break-before-make |
| Channel Interaction | None during overvoltage |
| Technology | CMOS |
| 封装 | 28-SOIC |
| 安装类型 | Surface Mount |
| Second Source | True second source available |
| Pin Compatibility | MPC507A (8-channel differential variant) |
MPC506 引脚配置
| 引脚 1 | EN — Enable input |
| 引脚 2 | A2 — Address bit 2 |
| 引脚 3 | A1 — Address bit 1 |
| 引脚 4 | A0 — Address bit 0 |
| 引脚 5 | A3 — Address bit 3 |
| 引脚 6 | OUT — Common output |
| 引脚 7 | GND — Ground |
| 引脚 8-14 | S1-S7 — Analog input channels 1-7 |
| 引脚 15 | V- (VEE) — Negative supply |
| 引脚 16-23 | S8-S15 — Analog input channels 8-15 |
| 引脚 24-27 | S0/S16 pins — Channel 0 and remaining channel inputs |
| 引脚 28 | V+ (VDD) — Positive supply |
典型应用
MPC506 适用于 6 应用s: Data Acquisition Systems, Test and Measurement Equipment, Industrial Process Control, Medical Instrumentation, Programmable Gain Amplifier Configurations, Multi-Sensor Routing in Automation Networks.
Data Acquisition Systems
The MPC506 fits data acquisition front ends where up to 16 sensor signals must share one ADC. Its break-before-make switching prevents channel-to-channel settling errors, and the ±15V signal range directly accommodates industrial transducer outputs without level shifting. Placed ahead of a buffer amplifier or ADC driver, the 1.5kOhm on-resistance introduces minimal error when the receiving stage input impedance is high. The 70Vpp overvoltage protection survives mis-wired field inputs - a common failure mode that destroys unprotected muxes - reducing field repair costs.
推荐
Test and Measurement Equipment
In automated test equipment and bench instruments, the MPC506 routes multiple test points to a single measurement chain. The break-before-make action guarantees the output never shorts two inputs during address transitions, preserving measurement integrity. Its 70Vpp input tolerance allows direct connection to unprotected test fixtures where operators may probe powered circuits. The CMOS standby consumption of 7.5mW typ keeps multi-channel scanning matrices power-efficient, and the 28-SOIC surface-mount package supports dense channel-count instrument boards.
推荐
Industrial Process Control
The MPC506 suits industrial process control panels scanning 4-20mA-derived voltages, thermocouple signals, and 0-10V transducer outputs. Its ±15V analog range covers standard industrial signal levels, and the internal overvoltage protection (70Vpp via 1kOhm series resistance) tolerates wiring faults common in factory environments without channel interaction, so one faulted channel does not corrupt adjacent readings. Break-before-make switching prevents measurement glitches during scan sequences feeding a shared ADC or PLC analog input card.
推荐
Medical Instrumentation
Medical diagnostic equipment, including patient-monitoring and analytical lab instruments, uses the MPC506 to multiplex multiple electrode or sensor channels into a single high-impedance amplifier chain. The CMOS process delivers very low leakage and high input impedance, which is essential for preserving microvolt-level biosignal fidelity. The ±15V signal range and protected inputs add robustness during patient-connected lead fault conditions. The 28-SOIC package allows compact multi-board channel expansion in cart-based and benchtop medical systems.
推荐
Programmable Gain Amplifier Configurations
The MPC506 can select different feedback taps or input scalings in programmable gain amplifier (PGA) front ends. By routing the 16 address-selectable inputs through resistive attenuator networks, designers implement software-controlled gain or attenuation steps. The 1.5kOhm on-resistance must be included in gain-error budgeting, or buffered. Break-before-make switching prevents momentary feedback-path shorts that would cause output spikes during gain changes, giving clean, glitch-free transitions between programmed gain settings.
推荐
Multi-Sensor Routing in Automation Networks
In distributed automation and smart-factory sensor nodes, the MPC506 expands a single analog input of a microcontroller or DAQ IC into 16 sensor channels, cutting ADC count and cost per node. Address lines driven directly from MCU GPIOs select channels under firmware control. Its overvoltage tolerance up to 70Vpp protects against accidental field-wiring mistakes on long cable runs, and the ±15V range accepts 24V-class industrial sensor outputs, letting one multiplexed front end serve heterogeneous sensor types in the same installation.
推荐
推荐产品汇总
工程参考数据： MPC506 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | MPC507A | ADG506A | DG506A | CD74HC4067 |
|---|---|---|---|---|---|
| Package | 28-SOIC | 28-SOIC - same | 28-pin package options | 28-pin | 24-SOIC - different |
| Brand | Texas Instruments | Texas Instruments | Analog Devices | Renesas Electronics | Texas Instruments |
| Channel Configuration | 16:1 single-ended | 8-channel differential | 16:1 single-ended | 16:1 single-ended | 16:1 single-ended |
| On-Resistance | 1.5 kOhm | 1.5 kOhm | 280 Ohm | 1.5 kOhm class | 70 Ohm |
| Overvoltage Protection | 70 Vpp (internal 1 kOhm) | 70 Vpp | Yes (+/- up to 55V class) | Yes | None |
| Analog Signal Range | ±15 V | ±15 V | ±15 V class | ±15 V class | VCC range (2-6V) |
| Switching | Break-before-make | Break-before-make | Break-before-make | Break-before-make | Break-before-make |
| Drop-in Replacement | n/a | No (differential function) | Yes (verify suffix pinout) | Yes (verify suffix pinout) | No (different package) |
关键差异点
- Internal 70Vpp overvoltage protection （对比 CD74HC4067)
- True ±15V signal range （对比 CD74HC4067)
- Pin-compatible differential companion （对比 MPC507A)
设计说明
Keep analog inputs within the specified ±15V signal range for normal operation; the internal 1kOhm series resistor only protects against transient overvoltage up to 70Vpp and cannot sustain continuous faults indefinitely. Do not substitute an unprotected HC/HCT4067 in MPC506 footprints expecting the same robustness - TI's E2E forum confirms the 4067 family has no overvoltage protection.
With 1.5kOhm on-resistance, buffer the mux output with a high-input-impedance op-amp (e.g., an OPA-class precision amplifier) so the switch resistance does not form an error-inducing divider with the ADC input. For capacitive loads, an isolation resistor between mux output and buffer prevents ringing. Allow settling time after each address transition since break-before-make briefly disconnects the output.
Use all three supply pins correctly (VDD, VEE, GND) and place 100nF ceramic decoupling directly at the supply pins on both rails. Keep analog channel traces away from address-line switching edges to prevent charge coupling into selected channels. Tie unused channel inputs to ground or a defined potential to limit crosstalk into the active channel.
合规信息
Compliance varies by orderable suffix (MPC506AU vs legacy versions); verify on TI product page for the exact suffix.
