MAX334EWE+ - Quad SPST High-Speed Analog Switch, 50 Ohm, 16-SOIC | Maxim Integrated
MPN: MAX334EWE+ ✓ فعالMAX334EWE+ نمای کلی
An analog switch is a solid-state semiconductor device that connects or disconnects an analog signal path under digital control. The switch belongs to the multiplexer family: a single SPST switch is the simplest routing element, and four of them in one package form a quad analog switch that can connect four signal sources to four loads, sample-and-hold front ends, or guard a bus. Like all CMOS analog switches, it sits between the signal world and the digital control world, bridging analog signal conditioning and logic-level control.
Key features of the MAX334EWE+ include a 50 ohm on-resistance, high switching speed, break-before-make behavior for all four channels, and logic-compatible control inputs that accept both CMOS and TTL levels. The manufacturer positions it as a direct replacement for the DG201 and DG211, offering one quarter the on-resistance and five times the speed of those earlier parts. The wide supply range accepts laboratory bench rails, industrial 24 V nominal buses, and split supplies without level shifting.
Technically, the device uses CMOS switch cells with independent control inputs per channel, so each switch can be steered by a separate logic signal. Low on-resistance keeps insertion loss and load-induced error small in high-impedance measurement paths, while break-before-make sequencing prevents the momentary shorting of two driven nodes that would corrupt a measurement. The MAX334EWE+ is specified for industrial temperature grade and ships in a surface-mount SOP-16 package.
Typical uses include precision sample-and-hold circuits in data acquisition systems, signal routing in test and measurement instrumentation, battery-cell and supply monitoring front ends, audio and communications signal path switching, and industrial or automotive signal multiplexing where several analog lines must be selected by a controller.
When designing around this device, treat each control input as a digital signal that still requires clean rise and fall times, and keep analog traces short and shielded from the switching control pins. Confirm break-before-make timing against your acquisition system and account for input capacitance and charge injection when the switched node feeds a high-gain amplifier.
This page consolidates the switch function, supply and logic compatibility, drop-in replacement options, and practical routing and layout guidance in one place, so an engineer can qualify the MAX334EWE+ for a new board or an existing design revision without cross-checking several documents.
جایگزین‌های drop-in برای MAX334EWE+ — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
MAX334EWE
✅ جایگزین مستقیم📋 جایگزین مرجع (خارج از کاتالوگ)
MAX334ESA+
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشده📋 جایگزین مرجع (خارج از کاتالوگ)
MAX334ESE+
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشده📋 جایگزین مرجع (خارج از کاتالوگ)
MAX335EWE+
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشده📋 جایگزین مرجع (خارج از کاتالوگ)
MAX336EWE+
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشده📋 جایگزین مرجع (خارج از کاتالوگ)
MAX334EWE+ حداکثر مقادیر مجاز و مشخصات الکتریکی
| Number of Circuits | 4 |
| Switch Configuration | 1:1 (SPST, single-pole single-throw) |
| On-Resistance | 50 ohm |
| Supply Voltage Range (Single) | +5 V to +30 V |
| Supply Voltage Range (Split) | +/-5 V to +/-15 V |
| Logic Input Compatibility | CMOS and TTL compatible |
| Switching Behavior | Break-before-make |
| بسته‌بندی | 16-pin SOIC (SOP-16) |
| Number of Terminals | 16 |
| Package Code | SOP |
| Package Shape | Rectangular |
| نوع نصب | Surface Mount |
| Temperature Grade | Industrial |
| Manufacturer | Maxim Integrated (Analog Devices) |
| وضعیت چرخه عمر | Active |
| Documented Replacement For | DG201 and DG211 |
| On-Resistance Advantage vs DG201/DG211 | 1/4 the on-resistance of the DG201/DG211 |
| Speed Advantage vs DG201/DG211 | 5x the switching speed of the DG201/DG211 |
راهنمای پیکربندی پین MAX334EWE+ rectangular
پیکربندی پین برای MAX334EWE+ (پکیج rectangular). شماره‌گذاری پایه‌ها، عملکردها و نمودارهای اتصال در دیتاشیت سازنده تعریف شده است. برای footprint دقیق و دستورالعمل‌های لحیم‌کاری به آن مراجعه کنید.
داده پین‌آوت تفصیلی موجود نیست برای MAX334EWE+.
به دیتاشیت برای پیکربندی کامل پین‌ها.
کاربردهای معمول
MAX334EWE+ مناسب است برای 6 کاربردs: Precision Sample-and-Hold Front Ends, Data Acquisition and Multiplexing, Test and Measurement Instrumentation, Battery and Supply Monitoring, Audio and Communication Signal Routing, Industrial and Automotive Signal Switching.
Precision Sample-and-Hold Front Ends
The MAX334EWE+ is a natural fit for the selection network that precedes a sample-and-hold amplifier in a data acquisition channel. Its 50 ohm on-resistance is low enough that the switched node loads the sensor negligibly compared with typical kilohm-level sensor impedances, while the four SPST channels let one controller pick among four sources without disturbing the others. The break-before-make behavior prevents two driven nodes from being momentarily tied together, which would otherwise inject a large transient into the hold capacitor and corrupt the captured sample. With +5 V to +30 V single-supply operation, the same part serves bench-top instrumentation and 24 V industrial front ends, and CMOS- and TTL-compatible control inputs allow direct drive from 3.3 V microcontrollers or legacy TTL logic without buffer stages.
پیشنهادی
Data Acquisition and Multiplexing
Multiplexer boards in industrial data loggers and test systems typically need many analog inputs, and the MAX334EWE+ can serve as the leaf element of such a tree: four independent SPST switches per package, so two devices give eight channels. Because the switch itself is high-speed and break-before-make, the multiplexing system can settle quickly between channels without risking the short-duration overlap that distorts readings. The wide supply acceptance of +5 V to +30 V single or plus/minus 5 V to plus/minus 15 V split lets the switch sit close to the sensor field on a high-voltage-tolerant board while control signals stay in the logic domain. CMOS- and TTL-compatible control inputs mean existing TTL-legacy front ends keep working without level translation, and the 50 ohm on-resistance keeps channel-to-channel impedance uniform, which simplifies gain calibration across channels.
پیشنهادی
Test and Measurement Instrumentation
In bench instruments, the MAX334EWE+ supports signal routing and instrument isolation where fast settling and low on-resistance both matter. Routing a single source to one of several amplifiers, or isolating an unused input to reduce leakage, benefits from the device's 50 ohm on-resistance and its high switching speed, which keeps amplitude and phase errors small at the frequencies typical of instrumentation amplifiers. The industrial temperature grade suits equipment that ships into factories and laboratories where temperature varies, and the 16-pin SOIC package is easy to hand-solder or to place on a dense analog board. Because control inputs accept both CMOS and TTL levels, a legacy TTL control bus in an older instrument can drive the switch directly, and the wide supply range allows a single switch to straddle a plus/minus 12 V analog rail or a 24 V industrial supply.
پیشنهادی
Battery and Supply Monitoring
Battery management designs often need to bring several monitored lines onto one analog input, and the MAX334EWE+ provides four independent SPST channels that can be steered by a charger or fuel-gauge controller. Its single-supply operation from +5 V to +30 V covers the wide input range found in multi-cell packs and industrial 24 V rails without a separate level-shifting stage, while split supplies from plus/minus 5 V to plus/minus 15 V support bipolar cell monitoring. CMOS- and TTL-compatible control inputs allow direct connection to the controller GPIO, and the 50 ohm on-resistance keeps the burden on the sensed node small relative to high-impedance cell taps. The break-before-make characteristic also matters in protection schemes, where momentarily bridging two monitored cells could inject an unintended current into the pack during switching.
پیشنهادی
Audio and Communication Signal Routing
The MAX334EWE+ can route audio, line-level, or communication signals between amplifier stages and termination networks, where the priority is low insertion loss and clean switching. The 50 ohm on-resistance is a good match to typical 50 or 600 ohm signal paths, keeping the level change introduced by the switch small, and the high switching speed reduces the click and distortion that a slow switch would add to an audio mute or channel-select function. Break-before-make operation ensures that a channel is never briefly connected to two sources at once, which is important when muting or switching between program feeds. The device accepts plus/minus 5 V to plus/minus 15 V split rails, a natural match for professional audio boards, and its CMOS- and TTL-compatible control inputs let a digital audio controller or microprocessor handle mute and routing functions directly.
پیشنهادی
Industrial and Automotive Signal Switching
In industrial control cabinets and vehicle electronics, a quad SPST switch is used to share sensors or actuator lines with a central controller. The MAX334EWE+ suits these systems because the industrial temperature grade covers factory environments and the 16-pin SOIC footprint is a proven, widely supported package for mixed-signal boards. Its plus/minus 5 V to plus/minus 15 V split-supply capability accepts the bipolar signaling used in 24 V industrial sensor loops, and the CMOS- and TTL-compatible control inputs make it straightforward to drive from the 5 V logic level still common in industrial controllers. On-resistance of 50 ohm limits the loading introduced into sensor lines, and break-before-make keeps two actuators from being tied together during a switchover, a fault condition that can be damaging in an automotive or process-control application.
پیشنهادی
خلاصه محصولات پیشنهادی
داده‌های مرجع مهندسی برای MAX334EWE+ — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | MAX334EWE | MAX334ESA+ | MAX334ESE+ | MAX335EWE+ | MAX336EWE+ |
|---|---|---|---|---|---|---|
| Package | 16-SOIC (SOP-16) | 16-SOIC (SOP-16) - same | 16-SOIC (SOP-16) - same | 16-SOIC (SOP-16) - same | 16-SOIC (SOP-16) - same | 16-SOIC (SOP-16) - same |
| Brand | Maxim Integrated (Analog Devices) | Maxim Integrated (Analog Devices) | Maxim Integrated (Analog Devices) | Maxim Integrated (Analog Devices) | Maxim Integrated (Analog Devices) | Maxim Integrated (Analog Devices) |
| Number of Circuits / Configuration | 4 x SPST (1:1) | 4 x SPST (1:1) | 4 x SPST (1:1) | 4 x SPST (1:1) | 4 x SPST (1:1) | 4 x SPST (1:1) |
| On-Resistance | 50 ohm | 50 ohm | 50 ohm | 50 ohm | Approximately 100 ohm (+100%) | Approximately 25 ohm (-50%) |
| Supply Voltage Range (Single) | +5 V to +30 V | +5 V to +30 V | +5 V to +30 V | +5 V to +30 V | +5 V to +30 V | +5 V to +30 V |
| Supply Voltage Range (Split) | +/-5 V to +/-15 V | +/-5 V to +/-15 V | +/-5 V to +/-15 V | +/-5 V to +/-15 V | +/-5 V to +/-15 V | +/-5 V to +/-15 V |
| Temperature Grade | Industrial | Industrial | Commercial (0 to +70 degrees C) | Extended beyond industrial | Industrial | Industrial |
| Logic Input Compatibility | CMOS and TTL compatible | CMOS and TTL compatible | CMOS and TTL compatible | CMOS and TTL compatible | CMOS and TTL compatible | CMOS and TTL compatible |
| Switching Behavior | Break-before-make | Break-before-make | Break-before-make | Break-before-make | Break-before-make | Break-before-make |
| Documented Replacement For | DG201 and DG211 | DG201 and DG211 | DG201 and DG211 | DG201 and DG211 | MAX334 family sibling | MAX334 family sibling |
تفاوت‌های کلیدی
- Lower on-resistance than the closest sibling switch in the same family and package (در مقابلMAX335EWE+)
- Documented direct replacement for legacy DG201 and DG211 sockets with materially better speed (در مقابلMAX334EWE)
- Broad supply acceptance reduces level-shifting in bipolar and industrial systems (در مقابلMAX334ESA+)
- Breaker-safe sequencing avoids tying two driven nodes together (در مقابلMAX336EWE+)
یادداشت‌های طراحی
Route analog switched nodes as short, direct traces and keep them away from the four control inputs and from the supply return path. Control edges couple capacitively into nearby analog traces, so a control line running parallel to a high-impedance sensor node can inject a switching glitch straight into the measurement. If the switch sits far from its source, treat the trace as a transmission line and add a termination or a small series damping resistor at the driver. Place the bypass capacitor for the supply pins directly at the device pins rather than at the connector, so switching current loops stay inside the package footprint area.
Break-before-make is a benefit, not a free lunch: it guarantees a dead time between the old and new connections, and the length of that gap is set by the control logic and device timing. In a sample-and-hold front end, budget that settling time in the acquisition cycle so the hold capacitor has charged before the converter samples. Estimated: with a 50 ohm on-resistance, a 1 nF hold capacitor and a 10 kohm source impedance, the RC product is roughly 10 us, so allow several time constants (about 50 us) for full settling before latching the sample.
Do not assume a zero-voltage switch: the on-resistance is 50 ohm, and in a high-impedance measurement that resistance becomes a real error term, so subtract it from the total series impedance when computing gain error and when scaling the input range of a following amplifier. A second common mistake is driving the control inputs from an open-drain or floating node; the inputs are CMOS and TTL compatible but still require a defined logic level, so add a pull-down to guarantee the off state. Finally, confirm that the supply pins are connected for the intended configuration, since split operation and single-supply operation use the same pins differently.
اطلاعات انطباق
The trailing + in the MAX334EWE+ ordering code denotes the RoHS-compliant, lead-free finish as published by the manufacturer and distributors. No AEC-Q100 qualification, REACH statement, halogen-free declaration, or conflict-minerals report is published for this part, so those fields remain unknown.
