MAX338MSE/PR3+T - 8:1 CMOS Multiplexer | Analog Devices
料号： MAX338MSE/PR3+T ✓ 量产中MAX338MSE/PR3+T 概述
An analog multiplexer is a semiconductor switch that routes multiple analog inputs through a shared output path. The MAX338 belongs to the broader interface-IC hierarchy: analog multiplexer, analog switch, interface IC, and semiconductor. Its eight-channel configuration can also be divided into two independent 4-channel sections, making it useful when a system must select among several sensor, instrument, or control signals without duplicating downstream amplifiers and converters.
The MAX338 is identified as a low-leakage CMOS analog multiplexer. Its 400 ohm on-resistance supports practical routing of medium-impedance analog sources, while a listed leakage figure of 20 pA is useful when measuring high-source-impedance signals. The 16-SOIC package provides a conventional surface-mount footprint suitable for established test-and-measurement boards and industrial control equipment.
The MAX338 family is designed around a single multiplexer architecture that can support either an 8:1 arrangement or a dual 4:1 arrangement. The manufacturer describes the MAX338 and MAX339 as pin-compatible upgrades for the DG508A and DG509A, emphasizing their role as established interface-building blocks for instrumentation systems. Their ability to operate from dual supplies also supports bipolar signal ranges where common-mode headroom is required.
Typical uses include automated test equipment, data-acquisition systems, industrial process monitoring, laboratory instrument input selection, battery and power-system measurement, and control boards that route several analog channels to a single amplifier or converter. The dual 4-channel capability can shorten signal paths when two groups of four sources must be selected independently.
Layout should give priority to keeping mux input and output traces short, maintaining a continuous ground reference, and preventing switched high-impedance nodes from coupling adjacent channels. The power and ground connections must be decoupled close to the device, while unused control and channel inputs should be connected according to the pin-description table in the Analog Devices MAX338 data sheet.
This product summary combines the manufacturer family information with distributor and cross-reference records for MAX338MSE/PR3+T. It distinguishes the exact ordering code from related MAX338 package, temperature, and tape-and-reel options and provides application, comparison, and design guidance focused on selecting and implementing this 16-SOIC analog multiplexer.
直接替换替代料： MAX338MSE/PR3+T ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MAX338MSE/PR3+T （相同外形与封装尺寸） ——差异在于 Package, Number of Channels, Mounting Type, On-Resistance, Technology.
MAX338ESE+T
✅ 直接替换联系询价
查看数据手册 →MAX338EPE+
✅ 直接替换联系询价
查看数据手册 →MAX338CPE+
✅ 直接替换联系询价
查看数据手册 →MAX339ESE+T
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MAX328ESE+T
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MAX329ESE+T
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MAX338MSE/PR3+T 规格参数
| Multiplexer Configuration | 8:1 or dual 4:1 |
| Number of Channels | 8 channels |
| Number of Circuits | 1 circuit |
| On-Resistance | 400 ohm |
| Leakage Current | 20 pA |
| Switching Time | 500 ns |
| Technology | CMOS |
| Single-Supply Voltage Range | +4.5 V to +30 V |
| Dual-Supply Voltage Range | +/-4.5 V to +/-20 V |
| 封装 | 16-SOIC, 0.154 inch wide, 3.90 mm width |
| 安装类型 | Surface mount |
| Product Family | MAX338/MAX339 |
| Legacy Compatibility | Pin-compatible upgrade for DG508A and DG509A |
| Product Status | Production |
| RoHS | Compliant |
MAX338MSE/PR3+T 16-soic, 0.154 inch wide, 3.90 mm width 引脚配置指南
MAX338MSE/PR3+T（16-soic, 0.154 inch wide, 3.90 mm width 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： MAX338MSE/PR3+T.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MAX338MSE/PR3+T 适用于 6 应用s: Automated Test Equipment, Data-Acquisition Systems, Industrial Process Monitoring, Laboratory Instrument Input Selection, Battery and Power-System Measurement, Analog Control Signal Routing.
Automated Test Equipment
The MAX338MSE/PR3+T is suitable for routing multiple test points into a shared measurement chain. Its 8:1 configuration can select among eight analog inputs, while its dual 4:1 mode can manage two smaller groups independently. The 400 ohm on-resistance is practical for moderate-impedance sources, and the listed 20 pA leakage helps protect measurements taken from high-impedance nodes. The 16-SOIC package also supports compact, conventional test-board layouts.
推荐
Data-Acquisition Systems
A data-acquisition card can use the MAX338MSE/PR3+T to reduce the number of front-end amplifier or converter channels. Eight analog sources may be selected in an 8:1 arrangement, or the device may divide into two independent 4:1 groups. With a maximum single-supply range of +4.5 V to +30 V and dual operation from ±4.5 V to ±20 V, it accommodates both unipolar and bipolar sensor interfaces while maintaining a straightforward 16-SOIC footprint.
推荐
Industrial Process Monitoring
The MAX338MSE/PR3+T can select pressure, temperature, level, or other analog plant signals before they enter a controller or data logger. Dual 4-channel operation is useful when two independent sensor groups must reach separate downstream processing channels. Its 400 ohm on-resistance limits voltage-divider loading for moderate-impedance sensors, while low 20 pA leakage is advantageous when the source impedance becomes high. The device also accepts dual bipolar supplies where required by the instrumentation architecture.
推荐
Laboratory Instrument Input Selection
Laboratory analyzers and measurement instruments often need to connect several sensors, reference points, or calibration sources to one signal path. The MAX338MSE/PR3+T provides an 8:1 routing option with 400 ohm on-resistance and 500 ns switching-time characteristics. Its dual 4:1 arrangement can shorten wiring between two groups of inputs, and the 16-SOIC package is convenient for mixed-signal boards requiring analog selection close to the front panel or sensor connectors.
推荐
Battery and Power-System Measurement
The MAX338MSE/PR3+T can route cell voltages, charger signals, and diagnostic points into a common monitoring channel in battery-management equipment. Its 400 ohm on-resistance limits the switch-path voltage drop for the moderate source impedances normally used in such measurements. The single +4.5 V to +30 V operating range covers many 12 V and 24 V systems, while the dual-supply capability supports bipolar measurement nodes. Low 20 pA leakage can improve accuracy when measuring high-impedance dividers.
推荐
Analog Control Signal Routing
Control boards can use the MAX338MSE/PR3+T to select command or feedback voltages before they reach an amplifier, DAC, or actuator-control stage. The 8:1 topology provides a compact way to manage multiple analog set points, while the dual 4:1 mode supports two independently controlled banks. A 400 ohm path is appropriate for many low-current control networks, and the 16-SOIC package allows placement near the analog connector or driver circuitry without introducing a large switching-device footprint.
推荐
推荐产品汇总
工程参考数据： MAX338MSE/PR3+T ——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 | MAX338ESE+T | MAX338EPE+ | MAX338CPE+ | MAX339ESE+T | MAX328ESE+T | MAX329ESE+T |
|---|---|---|---|---|---|---|---|
| Package | 16-SOIC | 16-SOIC - same | 16-SOIC - same | 16-SOIC - same | 16-SOIC - same | 16-SOIC - same | 16-SOIC - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
关键差异点
- Balanced low-leakage and on-resistance characteristics （对比 MAX328ESE+T)
- Exact 16-SOIC ordering-code availability （对比 MAX338ESE+T)
- Supports broad single- and dual-supply operation （对比 MAX339ESE+T)
设计说明
Route the selected signal path directly to the common output and keep the eight mux inputs away from clocks, relay coils, switching power nodes, and other high-edge-rate signals. Long parallel traces can increase capacitive feedthrough into the selected high-impedance channel. Where the source impedance is high, use a short ground reference and guard or shield unused channels according to the recommended circuit in the Analog Devices MAX338 data sheet.
Follow the manufacturer’s single-supply or dual-supply connection arrangement and place the supply bypass capacitor close to the device’s supply and ground pins. The MAX338 supports +4.5 V to +30 V from one supply or ±4.5 V to ±20 V from dual supplies, but the selected arrangement must match the signal range. Avoid routing supply current through analog input paths, and verify that transients on selected lines cannot exceed the absolute maximum ratings.
Do not treat MAX338MSE/PR3+T, MAX338ESE+T, MAX338EPE+, and MAX338CPE+ as identical solely because they share the MAX338 name. The suffix can encode temperature grade, package, and packing method. Also do not select MAX328 or MAX329 solely from the 16-SOIC footprint: Analog Devices identifies those devices as having lower leakage and charge injection but higher on-resistance, which changes the optimum measurement application.
合规信息
RoHS compliance is identified in the MAX338 cross-reference information. No separate REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification statement was identified for the exact ordering code.
