MAX14803CCM+CP3 - 16-Channel High-Voltage SPST Switch
料号： MAX14803CCM+CP3 ✓ 量产中MAX14803CCM+CP3 概述
A high-voltage analog switch is an integrated circuit that routes external signals under digital control while maintaining high voltage-handling capability. The MAX14803 belongs to the analog-switch hierarchy, which includes multiplexers, demultiplexers, and SPST switch arrays. This device combines 16 independent switch paths in one package, reducing board area and simplifying control in ultrasonic-imaging, printer, and other high-voltage signal-routing systems.
The MAX14803 provides low charge injection to limit unwanted voltage pulses when a switch changes state. Its 16 channels are controlled through a digital interface, and switch data is clocked into the internal 16-bit shift register before being retained by a programmable latch with enable control. The specified switching time is 3.5 microseconds for both turn-on and turn-off, supporting controlled channel selection in scanning and multiplexing systems.
The HVCMOS implementation is central to the device's operation and performance. It supports high-voltage switching while maintaining low leakage, with a listed leakage value of 2 microamperes. The 48 ohm on-resistance identifies the switch family as suitable for applications where moderate source impedance and signal attenuation are acceptable, rather than for applications requiring very low resistance or near-unity insertion loss.
Typical uses include ultrasonic imaging transducers, high-voltage printer and printhead systems, industrial test equipment, medical diagnostic equipment, and multichannel high-voltage signal acquisition. Designers should confirm the complete signal swing, timing, leakage, and pin-level conditions against the Analog Devices datasheet before committing the device to a new board.
Layout planning should preserve short, isolated routing for switched high-voltage nodes and provide a stable ground reference for the digital interface. Because all 16 channels share one package and interface, channel-to-channel coupling, enable timing, and unused-pin treatment require careful review. The 48-LQFP footprint also requires a footprint-aware assembly process and adequate thermal management.
This product page consolidates the manufacturer's functional description with package details, application guidance, design cautions, and technically meaningful family alternatives. It also distinguishes the device's electrical role from unrelated interface ICs, helping engineers identify where a 16-channel, high-voltage, normally open SPST switch array fits within a larger precision measurement or imaging system.
直接替换替代料： MAX14803CCM+CP3 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
MAX14803AECM+CP3
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MAX14802ECM+CP3
✅ 直接替换 ⚠️ 规格未核验📋 参考替代料（不在目录中）
MAX14803CCM+CP3 最大额定值与电气特性
| Number of Circuits | 16 circuits |
| Switch Configuration | 16 SPST normally open switches |
| Multiplexer Configuration | 1:1 |
| On-Resistance | 48 ohm |
| Process Technology | HVCMOS |
| Internal Control Register | 16-bit shift register |
| Turn-On Time | 3.5 microseconds |
| Turn-Off Time | 3.5 microseconds |
| Leakage Current | 2 microamperes |
| 封装 | 48-LQFP, 7 x 7 mm |
| 引脚数量 | 48 pins |
| 安装类型 | Surface mount |
| Moisture Sensitivity Level | MSL 1 |
| Terminal Finish | Matte tin |
| JESD-609 Code | e3 |
| Peak Reflow Temperature | 260 degrees Celsius |
| Maximum Time at Peak Reflow Temperature | 30 seconds |
MAX14803CCM+CP3 48-lqfp, 7 x 7 mm 引脚配置指南
MAX14803CCM+CP3（48-lqfp, 7 x 7 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： MAX14803CCM+CP3.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MAX14803CCM+CP3 适用于 6 应用s: Ultrasound Imaging Transducer Multiplexing, High-Voltage Printer and Printhead Control, Industrial High-Voltage Signal Acquisition, Medical Diagnostic Equipment, High-Voltage Test and Measurement, Automated Multiplexing Control.
Ultrasound Imaging Transducer Multiplexing
The MAX14803CCM+CP3 fits ultrasound systems that require many high-voltage signal paths in a compact package. Its 16 normally open SPST switches provide a 1:1 routing structure, while the 48 ohm on-resistance helps define the signal loss accepted by the transducer interface. The internal 16-bit shift register and programmable latch simplify coordinated channel selection. Turn-on and turn-off times of 3.5 microseconds should be included in receive or transmit timing margins, and the selected channel must remain within the device's complete high-voltage operating limits.
推荐
High-Voltage Printer and Printhead Control
The MAX14803CCM+CP3 is suitable for printer and printhead systems that distribute control or drive signals across a high-voltage channel array. Sixteen SPST paths in one 48-LQFP package can reduce the number of discrete switching elements and shorten routing between the controller and external circuitry. Its 48 ohm on-resistance is appropriate where moderate insertion loss can be accepted. The 3.5 microsecond switching interval must be reconciled with print timing and signal settling, while high-voltage trace spacing and connector insulation require attention in the mechanical layout.
推荐
Industrial High-Voltage Signal Acquisition
The MAX14803CCM+CP3 can organize multichannel high-voltage routing in industrial acquisition systems where a compact, serially controlled switch array is valuable. Its 16 SPST channels, 48 ohm on-resistance, and 2 microampere leakage specification provide a starting point for channel architecture and signal conditioning. The digital shift-register interface reduces the number of host-controller connections compared with individually controlled switches. Designers should calculate the complete input impedance, settling behavior, leakage contribution, and high-voltage transient margin for each selected measurement channel.
推荐
Medical Diagnostic Equipment
The MAX14803CCM+CP3 is appropriate for multichannel medical diagnostic equipment requiring controlled high-voltage switching and compact integration. Low charge injection is valuable when switching transients could disturb sensitive downstream measurements, and 16 channels allow several sensing paths to share one package. The 48-LQFP 7 x 7 mm footprint helps preserve board area in instrument-dense systems. For each diagnostic configuration, confirm maximum stress, isolation strategy, leakage, timing, and applicable medical product requirements; the component itself does not replace system-level safety controls.
推荐
High-Voltage Test and Measurement
The MAX14803CCM+CP3 can serve as the switching backbone in test systems that route several high-voltage nodes to a shared measurement chain. Sixteen SPST paths provide scalable multiplexing, while the serial control interface simplifies sequencing across multiple switch positions. The 48 ohm on-resistance should be included in the total source impedance presented to the instrument, and the 3.5 microsecond turn-on and turn-off times define the earliest practical point for a subsequent measurement. Include channel capacitance, cable loading, and settling time in the complete timing budget.
推荐
Automated Multiplexing Control
The MAX14803CCM+CP3 fits automated multiplexing systems that require channel state to be loaded through a serial data path and retained by a programmable latch. The internal 16-bit shift register aligns naturally with a parallel number of switched channels, and the enable function supports coordinated routing states. This arrangement can reduce host-controller pin count and provide deterministic control sequencing. Firmware must define reset, clocking, latch, and enable timing, and the PCB should separate sensitive measurement paths from switched high-voltage nodes to minimize coupling.
推荐
推荐产品汇总
工程参考数据： MAX14803CCM+CP3 ——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 | MAX14803AECM+CP3 | MAX14802ECM+CP3 |
|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices |
| Package | 48-LQFP (7 x 7 mm) | 48-LQFP (7 x 7 mm) | 48-LQFP (7 x 7 mm) |
| Number of Circuits | 16 circuits | 16 circuits | 16 circuits |
| Process Technology | HVCMOS | HVCMOS | HVCMOS |
关键差异点
- Sixteen high-voltage channels in one switching package （对比 MAX14802ECM+CP3)
- Defined low-charge-injection switch family （对比 MAX14803AECM+CP3)
- Compact 7 x 7 mm integration （对比 MAX14803AECM+CP3)
设计说明
Route the 16 high-voltage switch paths with short traces and maintain adequate clearance from low-level signal and return paths. The 48-LQFP arrangement places multiple switched nodes around the package, so trace geometry and neighboring-pin assignments should be reviewed together. Place the required bypass components close to their associated supply and ground pins, and follow the grounding and decoupling arrangement specified in the Analog Devices datasheet.
Treat the 3.5 microsecond turn-on and turn-off values as device switching times, not complete system settling times. Add switch capacitance, cable or probe capacitance, input resistance, and the selected amplifier's acquisition window when calculating usable measurement timing. The 48 ohm on-resistance also contributes to signal loss and should be included in the source-impedance budget of downstream circuitry.
Do not assume that a common 48-LQFP outline guarantees unconditional interchangeability. Confirm the manufacturer land pattern, pin assignments, maximum voltage, leakage, timing, charge injection, and control-interface behavior for each alternate ordering code. In particular, review how the serial data, clock, latch, and enable functions are sequenced before updating firmware and replacing the original component.
Identify the exact supply pins and their permitted operating range from the datasheet before designing the power distribution network. High-voltage switched nodes should not be assumed to share the same safe operating conditions as the logic interface. Use the manufacturer's absolute-maximum ratings and recommended operating conditions as separate constraints, and account for input current, leakage, and switching transitions in the supply design.
The 48-LQFP package provides a defined thermal path, but switching-node dissipation and supply current can vary with signal level, frequency, and channel activity. Use the package thermal information for the board stack-up and copper area, and avoid relying on a small exposed area without thermal verification. Keep heat-producing regulators and precision components away from sensitive switched nodes when the enclosure permits.
合规信息
The component is an industrial interface IC and is not identified as an AEC-Q100 automotive device. Compliance declarations are not stated on the product pages used for this record.
