MAX310EWN+ - 8:1 CMOS RF/Video Multiplexer | Maxim
料号： MAX310EWN+ ✓ 量产中MAX310EWN+ 概述
A video multiplexer is an interface integrated circuit that routes one of several analog video sources to a shared output. The MAX310EWN+ belongs to the broader RF/video switch and signal-routing hierarchy, where an analog switch or multiplexer selects a source without requiring separate downstream receivers for every input. CMOS construction supports low-power operation and consistent signal-path behavior across negative and positive supply rails.
The principal feature set includes eight selectable RF/video channels, a single multiplexed output path, and 250 ohm on resistance. Its ability to operate with either negative or positive supply voltage is useful in systems using bipolar signal paths, legacy video equipment, or mixed analog environments. The industrial temperature grade and surface-mount SOIC package support compact, automated PCB assembly.
Signal integrity depends on keeping the selected path short and providing a stable return connection. Although the switch resistance is suitable for many video-routing applications, cable capacitance, source impedance, trace geometry, and the impedance of the connected receiver can influence edge response. Grounding, bypass capacitance, and connector placement should therefore be treated as parts of the complete switching network rather than separate mechanical concerns.
Typical uses include analog video source selection, RF test-equipment routing, broadcast and professional video signal routing, instrumentation channel selection, and legacy computer-video interfaces. The MAX310EWN+ is most appropriate when an eight-input multiplexer is required in an 18-pin surface-mount design and when bipolar supply operation matches the surrounding circuitry.
For layout, assign each signal pin directly to its corresponding connector or source network, keep the mux input and output routes short, and provide local supply bypassing. Check the complete datasheet for control logic levels, break-before-make behavior, channel capacitance, leakage, and timing before using the device in precision or high-frequency systems.
This page consolidates the identified electrical characteristics, package details, functional alternatives, and practical layout guidance for engineers evaluating the MAX310EWN+. It also distinguishes the explicitly documented drop-in candidate from related multiplexers that use a different package or function and therefore are not direct replacements.
直接替换替代料： MAX310EWN+ ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
MAX310CWN+
✅ 直接替换联系询价
查看数据手册 →MAX310EWN+ 规格参数
| Product Type | CMOS RF/video multiplexer |
| Multiplexer Configuration | Single 8:1 |
| Channel Count | 8 channels |
| Number of Inputs | 8 inputs |
| 输出数量 | 1 output |
| On-State Resistance | 250 ohm |
| Positive Supply Voltage Range | 4.5 V to 16.5 V |
| Negative Supply Voltage Range | -16.5 V to -4.5 V |
| Technology | CMOS |
| 封装 | 18-pin SOIC |
| Package Code | SOP |
| Package Shape | Rectangular |
| Number of Terminals | 18 |
| 安装类型 | Surface mount |
| Temperature Grade | Industrial |
MAX310EWN+ rectangular 引脚配置指南
MAX310EWN+（rectangular 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： MAX310EWN+.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MAX310EWN+ 适用于 6 应用s: Analog Video Source Selection, RF Test Equipment Routing, Broadcast Video Signal Routing, Instrumentation Channel Selection, Legacy Computer Video Interfaces, Industrial Control Signal Multiplexing.
Analog Video Source Selection
The MAX310EWN+ fits analog video routers that must connect any one of eight sources to a single receiver or display path. Its 8-channel, single 8:1 organization eliminates the need for eight parallel receiver chains. The stated 250 ohm on resistance should be checked against the source impedance and receiver input, while short routing between the connector and mux limits additional capacitance. Keep video traces over a continuous ground reference and place bypass capacitors near the device.
推荐
RF Test Equipment Routing
The MAX310EWN+ is suitable for RF test equipment that switches among eight measurement channels through one common input or output path. The single 8:1 topology simplifies fixture architecture and can reduce the number of downstream analyzers or instrument front ends. Because the published on resistance is 250 ohm, it is most appropriate where source impedance, bandwidth, and acceptable insertion loss permit that resistance. Maintain short routes and controlled grounding to prevent the PCB from degrading the measured channel.
推荐
Broadcast Video Signal Routing
The MAX310EWN+ can route one of eight RF or video sources in a broadcast and professional-video signal path. Its CMOS multiplexer architecture and negative or positive supply capability support systems containing bipolar video signals. The engineer must verify the required amplitude, bandwidth, isolation, and timing against the manufacturer data sheet. Connector transitions should be minimized, and the mux should remain near the source selection network so that trace capacitance does not degrade channel response.
推荐
Instrumentation Channel Selection
The MAX310EWN+ fits instrumentation that selects among eight external sensor or test inputs before conditioning and measurement. Consolidating eight channels behind one 8:1 output reduces connector count and receiver duplication. Because the stated 250 ohm resistance can interact with high source impedances, choose the input network so its impedance remains appropriate for the measurement accuracy target. Use a low-impedance reference plane and verify leakage and off-channel behavior from the manufacturer data sheet.
推荐
Legacy Computer Video Interfaces
The MAX310EWN+ is applicable to legacy computer-video and peripheral routing where multiple composite or RF-related sources must share a display or processor input. The 8:1 configuration provides useful channel consolidation in a compact 18-pin SOIC. Signal amplitude and bandwidth should be checked carefully because the 250 ohm on resistance is not negligible for every source. Keep the routing path short, provide solid ground return, and account for connector and cable capacitance in the timing budget.
推荐
Industrial Control Signal Multiplexing
The MAX310EWN+ can multiplex eight low-frequency industrial control or monitoring signals when the circuit requires one shared analog path. Its industrial temperature grade and surface-mount package suit automated assembly, while dual negative and positive supply operation can accommodate bipolar control levels. Confirm the control-input logic thresholds and any isolation requirements from the manufacturer documentation. Use short traces and local supply bypassing to prevent switching activity from disturbing adjacent control circuitry.
推荐
推荐产品汇总
工程参考数据： MAX310EWN+ ——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 | MAX310CWN+ |
|---|---|---|
| Multiplexer Configuration | Single 8:1 | 8:1 |
| Channel Count | 8 channels | 8 channels |
| Package | 18-pin SOIC | 18-pin SOIC |
| Brand | Maxim Integrated | Maxim Integrated |
| Technology | CMOS | CMOS |
| Mounting Type | Surface mount | Surface mount |
关键差异点
- Documented complete replacement is available in the same package （对比 MAX310CWN+)
- Eight sources share one multiplexed output （对比 MAX310CWN+)
- Published on-resistance supports direct loss estimation （对比 MAX310CWN+)
设计说明
Place the MAX310EWN+ near the eight source connectors and the common output receiver to minimize trace capacitance and resistive loss. Maintain a continuous ground reference under the RF or video routes, avoid unnecessary layer changes, and keep switching-control traces away from sensitive input paths. Confirm the package orientation against the manufacturer drawing because the indexed product information does not provide a complete numbered pin table.
Use the manufacturer’s recommended positive and negative supply ranges of 4.5 V to 16.5 V and -16.5 V to -4.5 V. Place bypass capacitors close to the supply pins with short return paths to the ground plane. Review the control-reference requirements before connecting address or enable signals, particularly in a system that mixes bipolar video signals with single-ended digital control logic.
The 250 ohm on resistance must be included in the source-to-receiver impedance design. Estimate the added channel voltage drop from the maximum selected-source current multiplied by 250 ohm, and confirm that the resulting attenuation still meets the receiver’s input range. For higher-impedance sources, the switch resistance may materially reduce signal amplitude, so buffer or redesign the source interface instead of assuming the mux is impedance-neutral.
Do not treat MAX311CWN as a drop-in replacement without comparing pin functions and channel organization. Likewise, verify that a candidate uses the 18-pin SOIC footprint rather than merely a similar package description. Confirm control timing, switching behavior, leakage, capacitance, absolute maximum ratings, and lifecycle status in the relevant manufacturer documentation before releasing a substitute to production.
合规信息
Formal material and environmental compliance documents must be checked for the exact ordering code. AEC-Q100 qualification is not indicated for this industrial interface multiplexer.