MAX338CEE+ - 8:1 Low-Leakage CMOS Analog Mux | Analog Devices
料号： MAX338CEE+ ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $6.21 | $6.21 |
| 10 | $6.21 | $62.10 |
| 100 | $6.21 | $621.00 |
| 500 | $6.21 | $3,105.00 |
| 1,000 | $6.21 | $6,210.00 |
MAX338CEE+ 概述
An analog multiplexer is an analog switch device that selects one signal path among multiple inputs and connects it to a shared output. The MAX338 family is positioned as a low-leakage CMOS analog multiplexer family, with the MAX338 providing eight channels and the related MAX339 providing dual four-channel operation. This hierarchy places the part within analog switches, multiplexers, interface ICs, and broader signal-routing systems.
The verified MAX338CEE+ data specifies 400 ohm on-resistance and an 8:1 topology. Analog Devices identifies the MAX338 and MAX339 as pin-compatible upgrades for the industry-standard DG508A and DG509A families. The low-leakage characteristic is useful when source impedance is high, because leakage through an inactive channel can otherwise create measurement errors or interfere with small-signal nodes. The device also supports both single-supply and dual-supply operation, allowing integration into systems with different reference and bias arrangements.
Typical uses include data acquisition, automated test equipment, sensor multiplexing, analog signal routing, sample-and-hold systems, and industrial control interfaces. The 8:1 arrangement reduces the number of physical connections required when a controller must inspect several analog sources through one downstream converter or measurement channel. Designers should verify signal amplitude, supply polarity, control logic, switching timing, and package footprint against their particular system before production use.
A key design consideration is keeping unused analog inputs, control pins, and supply rails within the manufacturer's specified operating limits. PCB routing should minimize trace resistance and capacitance around high-impedance signal nodes, while grounding and decoupling should follow the datasheet recommendations. This page summarizes verified product, distributor, and manufacturer information; application suitability still depends on the complete electrical specification set.
MAX338CEE+ 规格参数
| Device Type | 8-channel CMOS analog multiplexer |
| Multiplexer Configuration | 8:1 |
| Number of Circuits | 1 circuit |
| Number of Channels | 8 channels |
| On-Resistance | 400 ohm |
| Technology | CMOS |
| Supply Voltage, Single | +4.5 V to +30 V |
| Supply Voltage, Dual | ±4.5 V to ±20 V |
| 封装 | 16-QSOP |
| Package Type | QSOP |
| 引脚数量 | 16 pins |
| 安装类型 | Surface Mount |
| Signal Routing | One of eight inputs connected to a common output |
| Leakage Classification | Low leakage |
| Related Family | MAX338 / MAX339 |
| Industry Compatibility | Pin-compatible upgrade for DG508A and DG509A families |
| 生命周期状态 | Production |
MAX338CEE+ qsop 引脚配置指南
MAX338CEE+（qsop 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： MAX338CEE+.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MAX338CEE+ 适用于 6 应用s: Data Acquisition Systems, Automated Test Equipment, Sensor Signal Multiplexing, Sample-and-Hold Systems, Industrial Control Interfaces, Communication and Control Routing.
Data Acquisition Systems
MAX338CEE+ is suitable for selecting one of eight external analog inputs into a shared measurement or conversion channel. Its verified 8:1 configuration reduces the number of physical source connections required by a data-acquisition front end, while the low-leakage CMOS design helps preserve small-signal integrity. The 400 ohm on-resistance is the key tradeoff: engineers should compare it with the source impedance, ADC input capacitance, settling time, and full-scale signal range. Use the exact manufacturer pinout and recommended decoupling arrangement, and verify that the selected channel can settle before the next acquisition.
推荐
Automated Test Equipment
MAX338CEE+ can route one of eight test inputs to a common DUT or measurement interface in automated test equipment. The verified one-circuit 8:1 architecture is useful when many stimulus or return paths must be consolidated without placing eight separate external connectors on the controller. The device supports single +4.5 V to +30 V or dual ±4.5 V to ±20 V supplies, which allows integration into both unipolar and bipolar fixture architectures. Confirm switching time, injected charge, leakage, and channel isolation against the test accuracy budget before releasing the fixture design.
推荐
Sensor Signal Multiplexing
The MAX338CEE+ can multiplex several sensor outputs into a common analog front end, particularly when the signals are moderate-impedance and leakage-sensitive. Its eight-channel selection reduces wiring complexity in environmental monitoring, condition-monitoring, and industrial sensing assemblies. The 400 ohm on-resistance may require careful buffer or gain planning when driving a high-capacitance ADC input, so settling and bandwidth should be verified rather than assumed. Use short traces, clean grounding, and the manufacturer's recommended bypass capacitors to preserve measurement repeatability.
推荐
Sample-and-Hold Systems
MAX338CEE+ is applicable to sample-and-hold signal chains that require selecting among several analog sources before a shared sampling or conversion stage. The low-leakage characteristic is relevant when holding or measuring high-impedance nodes, while the 8:1 topology provides more channel flexibility than a dual 4:1 arrangement. The design must account for the 400 ohm series resistance, switch capacitance, control dead time, and downstream acquisition timing. Confirm the complete signal bandwidth and settling requirements in the official datasheet before selecting external buffering.
推荐
Industrial Control Interfaces
MAX338CEE+ can be used in industrial control systems to select external analog command, feedback, or monitor signals for a shared controller input. Its support for both single and dual supplies is useful when the enclosure includes unipolar sensor rails or bipolar instrumentation. Low leakage helps reduce unwanted coupling into high-impedance feedback nodes, while the 8:1 arrangement simplifies channel management. Industrial implementations should still verify transient protection, grounding strategy, operating temperature, and the device's absolute maximum limits against the installation environment.
推荐
Communication and Control Routing
MAX338CEE+ is suitable for analog routing in communication and control equipment where several source lines must reach one downstream interface. The verified 400 ohm on-resistance is appropriate for many control and instrumentation paths but may require buffering for high-speed or high-impedance loads. Single-supply operation can simplify systems using a common ground reference, whereas dual supply operation supports bipolar signaling. Validate signal bandwidth, control-logic compatibility, channel crosstalk, and protection requirements before using the multiplexer in a communication-facing analog path.
推荐
工程参考数据： MAX338CEE+ ——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 |
|---|---|
| Device Type | 8-channel CMOS analog multiplexer |
| Multiplexer Configuration | 8:1 |
| Number of Circuits | 1 circuit |
| On-Resistance | 400 ohm |
| Single Supply | +4.5 V to +30 V |
| Dual Supply | ±4.5 V to ±20 V |
| Package | 16-QSOP |
| Brand | Analog Devices |
关键差异点
- Eight-channel selection in one device （对比 MAX339)
- Low-leakage CMOS implementation （对比 DG508A and DG509A families)
- Single- and dual-supply operation （对比 DG508A and DG509A families)
设计说明
Keep the selected analog input and common output traces short and use a topology that minimizes parasitic capacitance, especially when driving a high-impedance ADC input. The verified 400 ohm on-resistance is a series element in the signal path, so estimate the resulting divider effect with the source impedance and downstream input impedance before layout. Add an external buffer when the calculated attenuation or settling requirement is too high.
Place supply bypass capacitors close to the appropriate MAX338CEE+ supply pins and route the common output away from high-current switching nodes. For high-impedance signals, protect the board surface from contamination and moisture because leakage paths can degrade the benefit of the device's low-leakage architecture. Confirm whether the exact CEE package includes an exposed pad or other thermal structure in the official package drawing.
Do not treat the MAX338 family compatibility statement as a universal pin-for-pin guarantee across every DG508A or DG509A ordering suffix. Verify package dimensions, exposed-pad treatment, control-pin levels, supply polarity, signal limits, and timing from both datasheets. Also do not infer live inventory or manufacturing lead time from a distributor page; obtain a current quotation for the exact MAX338CEE+ suffix before committing a production build.
合规信息
The supplied verified results identify the manufacturer, package, topology, supply ranges, and production status, but do not provide compliance declarations. Compliance fields therefore remain unknown rather than being inferred.
