MAX338ETE+ - 8:1 400Ω Low-Leakage MUX | Maxim Integrated
MPN： MAX338ETE+ ✓ 啟用中MAX338ETE+ 概覽
An analog multiplexer, or analog mux, is an interface IC that routes one selected input channel to a shared output while blocking unselected channels. The MAX338 is a monolithic CMOS device intended for low-leakage signal-path applications. Its 8:1 configuration reduces the number of external signal lines when a system must select among multiple sensors, sources, or measurement channels. The 400 Ω specification is identified by the verified distributor listing, while additional electrical limits are not supplied in the retrieved data and are therefore not inferred here.
The key verified feature set includes an 8:1 configuration, 400 Ω on-resistance, low-leakage operation, CMOS construction, and a 16-TQFN 5 x 5 mm package. The manufacturer describes the MAX338 family as connecting one of eight inputs to a common output through a 3-bit binary address. The single-pole, single-throw switching arrangement is represented by the 8:1 mux function, although detailed break-before-make and charge-injection values were not provided in the verified snippets.
This part is useful when the system must share a downstream amplifier, ADC, DAC, or measurement block across several analog sources. It can help simplify routing in data-acquisition systems, sensor interfaces, automated test equipment, industrial controllers, and communication equipment. The low-leakage characteristic is particularly relevant when source impedance is high or when leakage can affect measurement accuracy, although the exact leakage limit should be confirmed in the manufacturer datasheet.
The 16-TQFN package supports compact surface-mount layouts and requires careful PCB design around the exposed-pad and thermal requirements shown in the manufacturer documentation. A key design consideration is to verify signal voltage, supply voltage, input impedance, switching speed, and leakage against the complete MAX338 data sheet before production release. The verified distributor data confirms the part number and package, but does not provide a complete set of timing, current, or absolute-maximum ratings.
This product page combines the verified manufacturer identification, distributor package data, pricing references, and application guidance. It also distinguishes confirmed parameters from values requiring datasheet confirmation, helping engineers make an informed sourcing decision without introducing unsupported specifications.
直接替換替代品，適用於 MAX338ETE+ — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： MAX338ETE+ （相同外形與佔位） — 差異在於 Leakage Characteristic, Mounting Type, Number of Channels, Package.
MAX338ETE-T
✅ 直接替換📋 參考替代品（不在目錄中）
MAX338ETE+T
✅ 直接替換📋 參考替代品（不在目錄中）
MAX338ETE
✅ 直接替換📋 參考替代品（不在目錄中）
MAX338MSE/PR3+
✅ 直接替換📋 參考替代品（不在目錄中）
MAX338EPE+
✅ 直接替換聯絡詢價
查看資料表 →MAX338ETE+
✅ 直接替換聯絡詢價
查看資料表 →MAX338ETE+ 規格
| Multiplexer Configuration | 8:1 single-ended analog multiplexer |
| Number of Channels | 8 channels |
| Address Control | 3-bit binary address |
| On Resistance | 400 Ω |
| Device Type | CMOS analog multiplexer |
| Leakage Characteristic | Low leakage |
| Common Output | One common output for the selected input |
| 封裝 | 16-TQFN, 5 x 5 mm |
| 安裝類型 | Surface mount |
| Supplier Description | 1 circuit IC switch, 8:1, 400 Ω |
| Manufacturer Family Description | 8-channel/dual 4-channel low-leakage CMOS analog multiplexers |
| Control Interface | Digital address control |
| RoHS 狀態 | Not stated in retrieved verified data |
| REACH Status | Not stated in retrieved verified data |
| AEC-Q100 Qualification | Not stated in retrieved verified data |
MAX338ETE+ 16-tqfn, 5 x 5 mm 腳位配置指南
MAX338ETE+（16-tqfn, 5 x 5 mm 封裝）的腳位配置。 腳位編號、功能與連接圖定義於製造商資料手冊中。請參閱該手冊以取得確切的封裝尺寸與焊接指引。
無詳細腳位定義資料： MAX338ETE+.
請參閱 資料表 以查看完整腳位配置。
典型應用
MAX338ETE+ 適用於 6 應用s: Data Acquisition Systems, Sensor Signal Multiplexing, Automated Test Equipment, Industrial Control Interfaces, Instrumentation Signal Routing, Battery-Powered Analog Systems.
Data Acquisition Systems
MAX338ETE+ fits a multiplexed data-acquisition front end where eight analog inputs must share one downstream ADC or measurement amplifier. The 8:1 architecture reduces the number of analog routing lines while the 3-bit binary address selects the desired source. Its 400 Ω on-resistance should be included in the source-impedance and settling analysis, especially when driving a high-resolution ADC. The low-leakage CMOS design is useful where source impedances are high, but leakage, switching time, and charge injection must be checked against the actual acquisition timing.
推薦
Sensor Signal Multiplexing
The MAX338ETE+ can route multiple sensor outputs into a shared amplifier, filter, or ADC input. Selecting one of eight channels with a 3-bit address is useful in systems with temperature, pressure, strain, or resistive-sensor inputs where each source must be measured sequentially. The 400 Ω switch resistance can affect source loading, while low leakage helps preserve small sensor signals. Engineers should verify common-mode range, supply requirements, input bias behavior, and the complete datasheet limits before selecting resistor dividers or protection networks.
推薦
Automated Test Equipment
MAX338ETE+ is suitable for test systems that scan multiple low-level analog nodes into a common measurement path. The eight-channel selection capability simplifies fixture wiring and can reduce the number of front-end input stages required. The 400 Ω on-resistance is relevant when the instrument uses high-input-impedance amplifiers, because the mux contributes to source impedance and can influence settling. Use controlled address sequencing and verify the datasheet switching-time and crosstalk values before defining test throughput or measurement accuracy targets.
推薦
Industrial Control Interfaces
A MAX338ETE+ can route eight control or monitoring signals into a shared controller input in an industrial system. This is useful when the controller has fewer analog inputs than the number of external pressure, temperature, level, or current-sense channels. The low-leakage CMOS characteristic can help preserve sensor-node accuracy, while the 400 Ω resistance must be considered with input impedance and fault-current calculations. Industrial designs should also verify operating temperature, supply voltage, isolation requirements, and transient protection against the manufacturer’s absolute-maximum limits.
推薦
Instrumentation Signal Routing
MAX338ETE+ can be used in instrumentation to select among several external measurement sources and present the selected signal to a common amplifier or ADC. The 8:1 arrangement helps centralize analog conditioning and can improve board utilization compared with duplicating front-end channels. Because the verified specifications identify 400 Ω on-resistance but do not provide complete settling and bandwidth values, the design should account for the switch network in the signal path and verify timing against the required measurement rate. Input protection and grounding are important for reliable operation.
推薦
Battery-Powered Analog Systems
The MAX338ETE+ can reduce analog routing hardware in a battery-powered measurement or control system by sharing one signal-conditioning path across eight inputs. This may simplify the power budget and board layout when the downstream amplifier or converter is more expensive than the mux. However, the retrieved verified data does not specify supply voltage, quiescent current, or operating temperature, so battery compatibility cannot be confirmed from these snippets. Engineers should compare the complete electrical limits and power consumption before making a portable or energy-harvesting design decision.
推薦
工程參考資料，適用於 MAX338ETE+ — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | MAX338ETE-T | MAX338ETE+T | MAX338ETE | MAX338MSE/PR3+ | MAX338EPE+ |
|---|---|---|---|---|---|---|
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Multiplexer Configuration | 8:1 | 8:1 | 8:1 | 8:1 | 8:1 | 8:1 |
| Channel Count | 8 inputs | 8 inputs | 8 inputs | 8 inputs | 8 inputs | 8 inputs |
| Address Control | 3-bit binary address | 3-bit binary address | 3-bit binary address | 3-bit binary address | 3-bit binary address | 3-bit binary address |
| Leakage Characteristic | Low leakage | Low leakage | Low leakage | Low leakage | Low leakage | Low leakage |
| Technology | CMOS | CMOS | CMOS | CMOS | CMOS | CMOS |
主要差異化特點
- Eight-channel analog routing in a compact surface-mount package (對比MAX338EPE+)
- Confirmed 400 Ω on-resistance and low-leakage positioning (對比MAX338MSE/PR3+)
- Direct manufacturer documentation path (對比MAX338ETE-T)
設計說明
Treat the mux as part of the source impedance. The verified on-resistance is 400 Ω, so calculate the resulting divider with the receiving amplifier or ADC input impedance before setting gain and source-drive strength. Add the switch resistance, protection leakage, and downstream input resistance to the complete settling analysis. The retrieved data does not include switching time or capacitance, so verify those values from the current MAX338 datasheet.
Use the manufacturer’s TQFN-16 land pattern and exposed-pad recommendations rather than a generic TQFN footprint. Keep the selected analog input and common output traces short, provide a continuous ground reference, and route address-control traces away from sensitive analog paths where practical. Confirm thermal-pad soldering and assembly requirements in the package documentation before releasing the PCB footprint.
Do not assume that a related MAX338 suffix is automatically interchangeable. MAX338ETE-T, MAX338ETE+T, MAX338MSE/PR3+, and MAX338EPE+ appear in the verified search results, but their suffix, package, temperature, and ordering details are not fully specified. Compare the exact pinout, electrical limits, package drawing, and lifecycle status against MAX338ETE+ before approving a substitution.
合規資訊
Compliance status was not included in the retrieved verified manufacturer or distributor snippets. The Octopart result title includes RoHS details, but no actual compliance claim was provided, so the field remains unknown.
