MAX4850ETE+ - Dual SPDT Over-Rail Analog Switch | Analog Devices
料号： MAX4850ETE+ ✓ 量产中MAX4850ETE+ 概述
An analog switch is a solid-state semiconductor device used to connect or disconnect signal paths under digital control. The SPDT, or single-pole double-throw, topology provides one common terminal and two selectable throws. This makes an SPDT switch useful for selecting between two sources, sharing one output with two paths, or implementing basic routing and isolation functions. MAX4850 belongs to the broader category of interface ICs and analog switch ICs within semiconductor signal-control devices.
The MAX4850ETE+ combines two SPDT channels in one compact 16-TQFN package. Its over-rail signal-handling feature is specifically identified in the verified product descriptions. This feature is important in circuits where the switched voltage may extend beyond the device's normal supply-rail limits, although the exact permitted input and supply ranges were not supplied by the verified data and must be confirmed in the manufacturer datasheet before design release.
The MAX4850ETE+ is applicable to audio routing, USB signal switching, and other compact interface systems in which two independent selection functions are useful. Its 3 mm by 3 mm TQFN package reduces board area compared with larger switch packages, while exposed-pad construction can improve heat transfer when the device dissipates appreciable power. Exact contact resistance, bandwidth, leakage, channel capacitance, logic thresholds, supply range, and timing values remain unavailable in the supplied records and therefore are not asserted here.
Use the MAX4850ETE+ when a design requires dual SPDT switching in the compact 16-TQFN footprint and when its verified over-rail handling characteristics satisfy the signal levels involved. Designers should confirm the complete electrical limits, control-pin truth table, recommended input circuit, and exposed-pad layout against the official datasheet. The verified distributor records support availability inquiries and quote-based purchasing, but they do not provide a numerical price table or confirmed stock quantity.
This page distinguishes directly verified facts from missing technical data, connects the device with appropriate audio, USB, routing, and signal-isolation use cases, and explains what engineers must verify before layout. It also records the absence of verified pin-to-pin substitute MPNs instead of presenting speculative cross-brand parts as drop-in replacements.
直接替换替代料： MAX4850ETE+ ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
该产品暂无直接替换替代料。
请求替代料MAX4850ETE+ 最大额定值与电气特性
| Product Type | Dual SPDT analog switch IC |
| Number of Channels | 2 channels |
| Switch Configuration | Single-pole double-throw (SPDT) |
| Signal Handling Feature | Over-rail signal handling |
| 封装 | 16-pin TQFN |
| Package Dimensions | 3 mm x 3 mm |
| 安装类型 | Surface mount |
| Application Category | Audio and USB signal switching |
MAX4850ETE+ 3 mm x 3 mm 引脚配置指南
MAX4850ETE+（3 mm x 3 mm 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： MAX4850ETE+.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MAX4850ETE+ 适用于 6 应用s: Audio Signal Routing, USB Interface Signal Selection, Dual-Source Signal Selection, Mixed-Signal Interface Routing, Test and Measurement Signal Isolation, Consumer and Portable Equipment.
Audio Signal Routing
The MAX4850ETE+ is suitable for compact audio routing because verified distributor data identifies it as a two-channel SPDT analog switch with over-rail signal handling. Its two switch sections can select between alternative signal paths while sharing the 16-TQFN footprint. For an audio board, place each common terminal at the routed output and connect the two throws to the relevant sources. Verify the datasheet's input range, on resistance, bandwidth, distortion-related information, and control thresholds before selecting capacitors or impedance values. The 3 mm by 3 mm package helps reduce board area, but the exposed pad still requires the manufacturer's recommended layout and assembly conditions.
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USB Interface Signal Selection
The MAX4850ETE+ can support USB interface routing because the verified DigiKey record classifies it as an audio and USB switch IC. Its dual SPDT organization permits two separately controlled selection functions in one compact 16-TQFN package. In a USB design, engineers should treat the device as a routing element rather than automatically assuming it meets every USB data-rate requirement. Check the official datasheet for bandwidth, capacitance, leakage, signal range, and logic thresholds, then confirm the complete USB channel specification. Its over-rail handling may assist transitions, but it does not replace the required USB compliance, impedance, ESD, or protection analysis.
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Dual-Source Signal Selection
The MAX4850ETE+ fits dual-source selection because it contains two SPDT switch channels, each capable of connecting a common terminal to one of two throws. A typical circuit can place two candidate sources on the throws of one channel and route the selected source toward a downstream receiver, while the second channel provides another independent selection point. This arrangement can support mode switching, isolation between functional paths, or local signal diversion. The primary design checks are control polarity, break-before-make behavior if required, on resistance, leakage, capacitance, and the allowed voltage range. The supplied data confirms the architecture but does not provide timing or resistance values.
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Mixed-Signal Interface Routing
The MAX4850ETE+ can be considered for mixed-signal interface routing where compact dual-channel selection and over-rail signal handling are useful. Its SPDT topology provides straightforward common-terminal routing without requiring a multiplexer architecture, while the 16-TQFN package limits board area to a 3 mm by 3 mm body. Over-rail capability can be valuable around signal lines that remain driven during supply changes, provided the exact limits are met. Engineers must still verify leakage into adjacent channels, off isolation, capacitance, control-logic compatibility, and absolute maximum ratings. Any application requiring precision measurement, medical isolation, or automotive qualification needs those specific use-case requirements confirmed separately.
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Test and Measurement Signal Isolation
The two independent SPDT channels in the MAX4850ETE+ can support signal isolation and path diversion in test and measurement systems. One channel may connect a test node to either a measurement path or a safe termination, while the other can independently route a control or reference signal. The compact 16-TQFN package helps preserve instrument density, and over-rail handling may permit switching controlled signals outside the immediate supply range within specified limits. Before using it with sensitive front ends, verify leakage, capacitance, on resistance, bandwidth, channel isolation, and switching time from the datasheet. Instrumentation accuracy may also require guarding, shielding, calibration, and separate protection beyond the switch itself.
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Consumer and Portable Equipment
The MAX4850ETE+ is appropriate for compact consumer or portable equipment that needs two low-profile SPDT routing functions. Its 3 mm by 3 mm 16-TQFN package helps conserve board area, and its dual-channel configuration can consolidate routing that might otherwise require separate single switches. Over-rail signal handling can be useful during mode changes or power sequencing, subject to the manufacturer's exact operating and absolute maximum limits. Portable designs must also review leakage, shutdown behavior, supply range, control thresholds, and exposed-pad current capability. No verified price, battery-life contribution, or package power rating was provided, so thermal and cost conclusions require additional manufacturer and distributor data.
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工程参考数据： MAX4850ETE+ ——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 |
|---|---|
| Product Type | Dual SPDT analog switch IC |
| Number of Channels | 2 channels |
| Switch Configuration | Single-pole double-throw (SPDT) |
| Signal Handling | Over-rail signal handling |
| Package | 16-pin TQFN (3 mm x 3 mm) |
| Application Category | Audio and USB switch IC |
| Brand | Analog Devices |
关键差异点
- Two independent SPDT channels in one package （对比 MAX4905ETA+T)
- More compact switching-function integration （对比 MAX4905ETA+T)
- Verified over-rail signal-handling feature （对比 MAX4905ETA+T)
设计说明
Use the exposed-pad layout and assembly recommendations from the manufacturer datasheet. The verified package is a 16-pin TQFN with a 3 mm by 3 mm body, but no verified pin table, pad dimensions, or exposed-pad thermal data were supplied. Place the device close to the routed signals, keep the analog traces short, and route control inputs away from sensitive analog paths. Do not assign pin numbers or pad connections until they have been checked against the official package drawing.
Validate the MAX4850ETE+ against the complete source impedance, load, bandwidth, capacitance, and isolation requirements of the selected path. The verified records establish over-rail signal handling but do not provide on resistance, bandwidth, off leakage, or channel capacitance. Those missing values directly determine insertion loss, switching transients, and cross-channel coupling. Measure the implemented path or compare against the manufacturer datasheet before treating the switch as suitable for high-speed USB or precision audio routing.
Determine the actual switched signal and control-pin states before defining the power architecture. Over-rail handling does not remove the need to check absolute maximum ratings or establish whether the common, throw, and control terminals can safely remain driven while the supply changes. The supplied records do not identify the supply range or control thresholds. Use the manufacturer truth table and recommended operating conditions, and include the device's contribution to leakage and system power in the power-budget analysis.
Do not treat the MAX4905ETA+T named in a verified comparison snippet as a direct substitute. Its listed package is an 8-TDFN and it has one SPDT channel, while MAX4850ETE+ has a 16-TQFN package and two SPDT channels. A PCB footprint change, control redesign, and signal-path rework would be required. Likewise, do not substitute a generic SPDT part unless its pinout, supply range, logic levels, signal limits, bandwidth, leakage, capacitance, and channel count all satisfy the design requirements.
合规信息
The supplied distributor and cross-reference records do not provide RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations for MAX4850ETE+. These fields remain unknown rather than being inferred from the manufacturer or package.
