MAX392CSE+ - Quad SPST Analog Switch, 20 Ohm, 16-SOIC | Analog Devices
MPN： MAX392CSE+ ✓ 啟用中MAX392CSE+ 概覽
An analog switch, also called an analog multiplexer or solid-state relay, is a semiconductor device that routes a signal from one node to another under digital control without moving the signal physically. The MAX392 belongs to the product hierarchy analog switch > multiplexer > interface IC > integrated circuit. Each of the four independent switches in the MAX392 is a single-pole single-throw (SPST) type, so it provides a simple on/off path for analog signals rather than a multi-channel selection function.
Key features of the MAX392 family include guaranteed on-resistance matching between channels below 2 Ω, on-resistance flatness over the signal range below 4 Ω, charge injection limited to 4 pC maximum, and improved off leakage of less than 2.5 nA at +85 °C. The part operates from a single +3 V to +15 V supply or from dual bipolar supplies of ±3 V to ±8 V, which allows it to sit alongside both modern low-voltage digital rails and legacy ±5 V analog instrumentation.
Internally the device uses MOSFET pass elements switched by CMOS control logic, which keeps the control input compatible with standard TTL and CMOS levels. The very low power consumption of less than 1 µW per switch makes the MAX392 attractive for battery-powered and portable measurement systems where leakage and standby draw dominate the power budget. Electrostatic discharge withstand above 2000 V per Method 3015.7 protects the pins during handling and board assembly.
Typical applications include precision test and measurement multiplexing, audio and low-level signal routing in instrumentation, industrial process control module switching, and general-purpose analog signal isolation in data acquisition systems. The quad SPST arrangement lets one package handle four separate signal paths, which reduces both board area and the number of control lines needed.
When designing with the MAX392CSE+, pay attention to the negative rail requirement in dual-supply operation and to off-state leakage when the switched node sits near the supply rails. Place the device close to the source and destination so that trace capacitance does not degrade the small charge-injection and switching-glitch performance that make this switch precise in the first place.
This page brings together parametric detail, package information, drop-in alternatives and practical design notes so that engineers can qualify the MAX392CSE+ for a precision analog switching requirement without having to piece the data together from several documents.
直接替換替代品，適用於 MAX392CSE+ — 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。
MAX392EESE+
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
MAX395CSE+
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
MAX390CSE+
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
MAX392CSE+ 最大額定值與電氣特性
| Configuration | Quad, SPST (4 independent switches) |
| Number of Switches | 4 |
| Number of Poles per Switch | 1 (single-pole single-throw) |
| On-Resistance | 20 Ω typical, 35 Ω maximum |
| On-Resistance Match Between Channels | < 2 Ω guaranteed |
| On-Resistance Flatness Over Signal Range | < 4 Ω guaranteed |
| Charge Injection | 4 pC maximum |
| Off Leakage Current | < 2.5 nA at +85 °C |
| Electrostatic Discharge Withstand | > 2000 V per Method 3015.7 |
| Single-Supply Operation | +3 V to +15 V |
| Bipolar-Supply Operation | ±3 V to ±8 V |
| Power Consumption | < 1 µW |
| 工作溫度範圍 | 0 °C to +70 °C |
| 封裝 | 16-pin SOIC (CSE) |
| 安裝類型 | Surface mount |
| Production Status | Production |
| Signal Type | Single-ended analog |
MAX392CSE+ 16-pin soic (cse) 腳位配置指南
MAX392CSE+（16-pin soic (cse) 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： MAX392CSE+.
請參閱 資料表 以查看完整腳位配置。
典型應用
MAX392CSE+ 適用於 6 應用s: Precision Test and Measurement Signal Multiplexing, Audio and Low-Level Signal Routing in Instrumentation, Industrial Process Control Module Switching, Battery-Powered Portable Measurement Devices, Medical and Laboratory Diagnostic Front Ends, Data Acquisition and General-Purpose Signal Isolation.
Precision Test and Measurement Signal Multiplexing
The MAX392CSE+ suits bench and rack instrumentation that must route a single source to several instrument front ends. Four independent SPST paths in one 16-pin SOIC let a switch matrix cover four inputs without adding relay-driver logic, and the guaranteed on-resistance matching between channels below 2 Ω keeps channel-to-channel gain error negligible across a scan. Charge injection of 4 pC maximum limits the transient step that appears on the signal when a path changes state, which matters when the front end integrates over long sample windows. Off leakage below 2.5 nA at +85 °C keeps the unselected input from loading the source. Use single +3 V to +15 V supply when the rack bus is modern, or ±3 V to ±8 V when the front end handles bipolar signals.
推薦
Audio and Low-Level Signal Routing in Instrumentation
In audio and low-level measurement equipment, the MAX392CSE+ routes headphone, microphone and line-level paths without the mechanical wear and audible contact noise of a relay. The 20 Ω typical on-resistance is low enough that it can sit in series with a high-impedance amplifier input, and the flatness over the signal range below 4 Ω prevents level shift across the audio band. Because the part consumes less than 1 µW, it adds nothing meaningful to the quiescent budget of a portable monitor or a battery-powered field instrument. The quad SPST arrangement is also convenient for muting and channel-select functions that require true isolation rather than a shared-bus multiplexer.
推薦
Industrial Process Control Module Switching
Process control cards commonly need to isolate sensor inputs from a shared measurement backplane, and the MAX392CSE+ provides that isolation with solid-state speed and no mechanical wear. Its quad SPST structure maps directly to four sensor channels, each with its own COM and NO node, so each transducer can be disconnected from the shared amplifier when it is not being sampled. The single +3 V to +15 V supply range matches the 24 V industrial systems after front-end regulation, and the low 1 µW power consumption keeps card-level thermal load negligible. Check the isolation requirements of your safety loop before using the switch as a functional-isolation barrier, since it is a precision signal switch rather than a safety-rated isolator.
推薦
Battery-Powered Portable Measurement Devices
Handheld analyzers, field probes and portable loggers run for long periods on small cells, which makes standby current a first-order design constraint. The MAX392CSE+ contributes less than 1 µW of power consumption per switch, so a four-channel routing stage adds negligible drain to the budget even when the paths are held open most of the time. Off leakage below 2.5 nA at +85 °C prevents an unselected sensor from draining the cell through a resistive divider, and the on-resistance of 20 Ω typical keeps the burden voltage small for high-impedance probes. The 0 °C to +70 °C commercial grade covers most handheld indoor and laboratory use; specify the extended-temperature grade if the unit operates in a vehicle or unheated enclosure.
推薦
Medical and Laboratory Diagnostic Front Ends
Diagnostic analyzers front-ended by small biosensor potentials require switches that add negligible error, and the MAX392CSE+ provides guaranteed on-resistance matching below 2 Ω and charge injection of 4 pC maximum so that switch-induced transients stay far below typical millivolt front-end resolution. The bipolar ±3 V to ±8 V operating mode allows direct handling of bipolar electrode signals without an offset stage, and the quad SPST arrangement supports four electrode or reference paths in a single 16-pin SOIC. The 0 °C to +70 °C commercial grade suits benchtop laboratory equipment. Confirm your leakage and isolation limits against the data sheet before placing the device in any direct patient-contact signal path.
推薦
Data Acquisition and General-Purpose Signal Isolation
In multi-channel data acquisition systems the MAX392CSE+ provides isolation between the analog input section and a shared converter or reference node. Because each switch is a true single-pole single-throw element, the COM node can be left floating or held at a defined level while the source is disconnected, which prevents channel-to-channel crosstalk that a multiplexer-based approach would introduce. The 20 Ω typical on-resistance keeps insertion loss predictable across a 16-bit-class converter front end, and the guaranteed 4 pC maximum charge injection reduces the settling time needed after each switch event. For designs that must cover wider ambient ranges, evaluate the extended-temperature grade in the same footprint.
推薦
推薦產品摘要
工程參考資料，適用於 MAX392CSE+ — 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 | MAX392EESE+ | MAX395CSE+ | MAX390CSE+ |
|---|---|---|---|---|
| Package | 16-pin SOIC (CSE) | 16-pin SOIC (CSE) - same | 16-pin SOIC (CSE) - same | 8-pin SOIC (CSE) - fewer pins |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Number of Switches | 4 (quad) | 4 (quad) | 4 (quad) | 2 (dual) |
| Switch Configuration | SPST | SPST | SPST | SPST |
| On-Resistance | 20 Ω typical, 35 Ω maximum | 20 Ω typical, 35 Ω maximum | 20 Ω typical | 20 Ω typical |
| Single-Supply Operation | +3 V to +15 V | +3 V to +15 V | +3 V to +15 V | +3 V to +15 V |
| Power Consumption | < 1 µW | < 1 µW | Lower power than MAX392 | < 1 µW |
| Operating Temperature Range | 0 °C to +70 °C | Extended, beyond 0 °C to +70 °C | 0 °C to +70 °C | 0 °C to +70 °C |
主要差異化特點
- Four independent SPST paths in a single 16-pin SOIC (對比MAX390CSE+)
- Guaranteed on-resistance matching between channels below 2 Ω (對比MAX395CSE+)
- Temperature grade option in the identical footprint (對比MAX392EESE+)
設計說明
Estimated with the 20 Ω typical on-resistance: at 1 mA of signal current the switch contributes about 20 mV of series drop, so the source impedance must stay low or the drop must be included in the gain budget. Place the MAX392CSE+ directly at the instrumented amplifier input so that the switched node is not exposed to high-impedance PCB leakage paths. This matters most in the bipolar ±3 V to ±8 V configuration, where a floating COM node left open during a switching transient can pick up coupled noise.
Route COM and NO traces as a matched pair and keep the switched traces short, since the 4 pC maximum charge injection produces a voltage step proportional to the load capacitance. Add a small guard or shunt capacitance only after checking the settling behaviour of the following stage, because added capacitance increases the injected step. Ground the supply pins with a short, low-impedance return path to the same reference as the switched signal, and place the local supply bypass capacitor adjacent to the supply pins on the 16-pin SOIC footprint.
Because the part consumes less than 1 µW in the switched state, the dominant power consideration is the supply rails, not the switch itself. In single-supply mode the +3 V to +15 V range means the device can run directly from a 3.3 V rail, while in bipolar mode both rails must be present for the common-mode range to be valid. Verify the control input levels against the supply rails, since CMOS-compatible inputs are referenced to the actual supply pins and a 5 V logic drive into a 3.3 V supply will exceed the input rating.
Do not substitute this part for a power relay: with 20 Ω typical on-resistance it is intended for low-level analog signals, not for switching load current. Also avoid using the same footprint pattern for a different pin count in the family without rechecking the pin-description table, because the dual and quad members use the same SOIC body width with a different pin count. Confirm the temperature grade on the part number, since the commercial suffix limits operation to 0 °C to +70 °C.
合規資訊
Analog Devices lists the MAX392 as a PRODUCTION part. RoHS, REACH, lead-free and halogen-free status are confirmed from the current product documentation on request rather than assumed.
