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產品（39,000+)

DG417CY+ - 35 Ohm SPST Analog Switch | Analog Devices
DG417CY+

DG417CY+ - 35 Ohm SPST Analog Switch | Analog Devices

Analog Devices DG417CY+ is a precision, CMOS, monolithic SPST analog switch with a 35 ohm on-resistance, 8-pin NSOIC package, and normally closed contact configuration. The verified product data identifies a single switch channel, a 1:1 signal configuration, 100 ohm maximum off-leakage, and complementary 10 V to 30 V dual-supply operation or 4.5 V to 20 V single-supply operation. It is designed for precision signal routing where low distortion, controlled resistance, and reliable switching are important. An analog switch is a semiconductor device that connects or disconnects an analog signal path under digital control. The DG417 belongs to the broader analog switch and multiplexer hierarchy, which sits within interface ICs used for routing sensor, measurement, communications, and test signals. Unlike a mechanical relay, its CMOS implementation supports fast operation, compact integration, and low power consumption, while the normally closed configuration provides a defined signal path when the control input is inactive. The DG417CY+ is identified as an improved precision switch. The manufacturer describes on-resistance matching of 3 ohm maximum and on-resistance flatness of 4 ohm maximum across the signal range. These characteristics help preserve amplitude accuracy and linearity in systems that repeatedly route low-level analog signals. The verified distributor description lists 35 ohm on-resistance, while an additional source cites a 100 ohm maximum off-leakage figure. The switch can operate from dual supplies of 10 V to 30 V or from a single supply of 4.5 V to 20 V, allowing integration into both traditional bipolar analog systems and lower-voltage equipment. Its single SPST channel makes it particularly useful for one signal path rather than a multiplexer bank. The control and signal-pin architecture supports straightforward routing in test-and-measurement, instrumentation, communications, and precision acquisition systems. Typical uses include signal-path isolation, sensor conditioning front ends, automated test equipment, data-acquisition systems, and communication interfaces. The normally closed behavior is valuable when a default connection must remain active before a controller asserts the switch. Designers should account for charge injection, off-leakage, supply sequencing, and the dynamic behavior of the on-resistance rather than treating the switch as an ideal conductor. For PCB implementation, place the device close to the routed signal to minimize parasitic capacitance and pickup. Keep control traces away from sensitive analog inputs, provide adequate supply decoupling, and verify that the selected control logic is compatible with the device's operating supply. The 8-pin surface-mount package supports compact layouts, but normal reflow and handling practices remain necessary. This page combines the verified DG417CY+ distributor information, manufacturer product details, package information, and design-focused guidance. It also documents where additional datasheet values, exact pin assignments, pricing tiers, and verified drop-in alternatives are needed, allowing procurement and engineering teams to evaluate the part without treating unverified information as guaranteed.

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DG417DJ - 35 Ohm Precision CMOS Analog Switch | Vishay
DG417DJ

DG417DJ - 35 Ohm Precision CMOS Analog Switch | Vishay

The Vishay DG417DJ is a single SPST precision CMOS analog switch with a 35 ohm maximum on-resistance, fast 100 ns switching action, and an 8-pin plastic DIP package. The device supports analog signals up to 15 V and has a 44 V maximum supply rating, combining low power, low leakage, and compact switching for portable, industrial, and military equipment. An analog switch is a semiconductor interface that routes signals between input and output terminals under digital control. The DG417 belongs to the DG417, DG418, and DG419 family of monolithic CMOS switches. These devices occupy the interface-IC hierarchy above passive switches and analog multiplexers, providing controlled bidirectional or unidirectional signal paths in test equipment, data acquisition, battery-powered instruments, and industrial control systems. Key characteristics include a maximum on-resistance of 35 ohm, a typical on-resistance of 20 ohm, and a turn-on time of 100 ns. The low-power specification is 35 nW, while the 15 V analog signal range supports instrumentation and control signals above conventional logic levels. TTL and CMOS compatibility makes the control interface straightforward for common digital circuits. The DG417DJ uses monolithic CMOS construction to limit power consumption and leakage. Its fast switching action is useful for multiplexing analog measurement channels, while its low on-resistance helps preserve signal integrity when the source impedance is low. Exact off-leakage, channel capacitance, charge injection, and temperature limits should be confirmed in the manufacturer data sheet before finalizing a high-impedance or precision acquisition design. Typical uses include portable data loggers, battery-powered test instruments, industrial process-control modules, military electronics, sample-and-hold systems, and general analog signal routing. For designs requiring higher current or lower resistance, the switch rating must remain within the load and signal-integrity limits of the complete analog path. When laying out the PCB, place the DG417DJ close to the signal source and destination to minimize parasitic capacitance and resistance. Keep the analog and digital return paths disciplined, provide stable supply decoupling, and verify the control-pin logic levels. Reviewing the DG417 data sheet pin description and timing diagrams is essential when new switches are added to an existing board.

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DG417DY+ - 35 Ohm SPST Analog Switch | Maxim Integrated
DG417DY+

DG417DY+ - 35 Ohm SPST Analog Switch | Maxim Integrated

The Maxim Integrated DG417DY+ is a precision CMOS monolithic analog switch with one normally closed SPST channel, 35 ohm maximum on-resistance, and an 8-SOIC package. The verified distributor listing identifies a 1:1 switch configuration and 8-SOIC package, while the manufacturer page places the DG417 family in production and describes improved precision switching. A manufacturer-listed starting price is $3.56 for 1,000 units, making the part suitable for signal-routing designs that need low leakage, controlled charge injection, and bidirectional conduction. An analog switch is a semiconductor device that routes electrical signals between circuit nodes under digital control. The DG417 belongs to the broader interface-IC hierarchy: analog switch, CMOS analog switch, SPST switch, and signal-routing component. Its normally closed configuration means the selected signal path is conductive in the default power-down state, while the control input determines the switching state. This topology is useful when continuity must be maintained unless a separate control signal actively interrupts the path. Verified family-level features include maximum on-resistance of 35 ohms, on-resistance matching up to 3 ohms between switches, on-resistance flatness up to 4 ohms over the signal range, charge injection up to 10 pC, off leakage below 5 nA at +85 degrees Celsius, and ESD withstand of at least 2000 V per Method 3015.7. The device also offers low power consumption and is designed to conduct equally well in either signal direction. The DG417 family is specified for precision analog routing rather than high-voltage power switching. Its CMOS construction supports low leakage and compact integration, while controlled charge injection helps limit transient errors when the switch changes state. Exact supply range, control-logic levels, switch timing, and channel-specific pin behavior are not present in the supplied excerpts and are therefore not inferred here. Typical uses include analog signal conditioning, test-equipment routing, instrumentation, communications equipment, and precision measurement paths. The switch can route a sensor, amplifier, or converter signal when system timing requires a normally closed connection. Designers should verify the complete datasheet limits for supply voltage, signal range, control thresholds, and absolute maximum ratings before finalizing a new design. For PCB implementation, place the device close to the routed signal so trace capacitance and resistance remain low. Keep sensitive analog traces away from fast digital control lines, provide a stable ground reference, and account for injected charge at downstream amplifiers or sampling circuits. The 8-SOIC package is a surface-mount package suitable for conventional PCB assembly and hand or automated placement. This page combines the verified manufacturer overview, distributor identification, and public comparison data with engineering guidance focused on signal integrity, switching behavior, and design validation. It intentionally distinguishes verified facts from parameters that require confirmation in the complete manufacturer datasheet.

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DG418CY+ - 35Ω SPST CMOS Analog Switch | Maxim
DG418CY+

DG418CY+ - 35Ω SPST CMOS Analog Switch | Maxim

The Maxim Integrated DG418CY+ is a precision, CMOS, monolithic SPST analog switch with one normally open channel, a maximum on-resistance of 35 Ω, and an 8-pin SOIC package. It is designed to route analog signals while providing guaranteed on-resistance matching of 3 Ω maximum between switches and on-resistance flatness of 4 Ω maximum across the signal range. An analog switch is a semiconductor-controlled routing component that connects or disconnects analog signals under digital control. The DG418 belongs to the broader analog-switch and multiplexer hierarchy, where it belongs to the interface-IC and signal-routing category. Unlike a mechanical relay, it operates without moving contacts and is therefore suitable for compact instrumentation, data-acquisition, industrial-control, and test-equipment systems. Key electrical features include a low on-resistance, low charge injection of 10 pC maximum, and off-leakage current below 5 nA at +85 °C. These characteristics reduce signal-distortion and settling effects in precision circuits. The switch conducts equally well in either signal direction and includes ESD protection of 2000 V minimum according to Method 3015.7. Its low power consumption also makes it suitable for systems where supply current is constrained. The DG418CY+ uses precision CMOS circuitry to provide a consistent resistance when the switch closes. On-resistance matching limits channel-to-channel variation in designs that use multiple switches, while flatness describes how little the on-resistance changes across the usable signal range. These two properties help preserve amplitude accuracy and simplify calibration when the device is used in measurement front ends or signal-routing matrices. Typical applications include data acquisition, instrumentation, industrial control, sample-and-hold systems, test and measurement equipment, and general-purpose analog signal routing. In these systems, the DG418CY+ can isolate a sensor, route a test signal, or select a measurement path without introducing excessive resistance, charge injection, or off-state leakage. Designers should use the pin-description and typical application circuits in the manufacturer data sheet when assigning control inputs and signal pins. The analog signal path should remain within the device's published voltage and current limits, while the control signal should use the logic levels specified for the particular DG418 variant. PCB signal traces should be short and appropriately terminated to minimize coupling into the switched node. This product page combines the manufacturer's DG418 family documentation, package and circuit details, procurement facts, replacement analysis, and practical design guidance. It also distinguishes exact drop-in interchangeability from devices that merely use the same package or offer related switching functions.

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DG418DJ+ - 35Ω SPST Analog Switch | Analog Devices
DG418DJ+

DG418DJ+ - 35Ω SPST Analog Switch | Analog Devices

Analog Devices DG418DJ+ is a precision CMOS analog switch with a 35 Ω maximum on-resistance, 100 ns switching action, and a normally open SPST configuration in an 8-pin PDIP package. It supports analog signals up to 15 V, accepts a maximum supply voltage of 44 V, and is compatible with TTL and CMOS control logic. The device is intended for applications requiring fast, low-power signal routing. An analog switch is a semiconductor device that routes electrical signals between circuit nodes under digital control. Unlike a mechanical relay, it has no moving contacts and can switch rapidly with low power consumption. In the power-management hierarchy, the DG418DJ+ belongs to the interface-IC category, where analog switches connect precision measurement, communication, audio, and instrumentation circuits to shared signal paths. The principal features include a 35 Ω on-resistance, 100 ns turn-on action, and 35 nW power dissipation. A 15 V analog signal range provides compatibility with conventional bipolar and CMOS signal systems, while the 44 V maximum supply rating provides additional operating margin. TTL compatibility allows the switch to be driven by common digital logic levels without an additional level-conversion stage. Internally, the DG418DJ+ uses CMOS circuitry to control the analog path. Its low power requirement makes it appropriate for continuously connected signal-routing systems where relay-style control current would be excessive. Fast switching action also allows the device to respond quickly to digital selection signals, although delay, bandwidth, charge injection, and off-isolation characteristics must be considered when designing around the switching edges. Typical uses include multimeter and oscilloscope input routing, test and measurement systems, sample-and-hold systems, battery-powered instrumentation, analog signal multiplexing, and industrial control interfaces. The normally open configuration is particularly useful when a signal path must remain disconnected until the control input activates it. For layout, keep routing from the control pin and analog terminals short, and maintain a common ground reference between the switch and the connected circuit. Check the supply input, control thresholds, signal range, and off-state isolation in the manufacturer datasheet before finalizing a design. The through-hole PDIP package also requires adequate spacing for lead insertion and soldering.

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DG418DY+ - 35 Ohm Precision CMOS Analog Switch | Analog Devices
DG418DY+

DG418DY+ - 35 Ohm Precision CMOS Analog Switch | Analog Devices

The Analog Devices DG418DY+ is a single-channel precision CMOS analog switch configured as a 1:1 SPST normally open switch, with an on-resistance of 35 ohms in an 8-pin SOIC package. It supports a 12 V single-supply configuration and belongs to the DG417, DG418, and DG419 precision analog-switch family. An analog switch is a semiconductor device that routes electrical signals between circuit nodes under digital control. The DG418DY+ combines low power, low leakage, high switching speed, and low on-resistance in a compact surface-mount package. In this switching role, the 1:1 configuration provides one signal path for signal-routing, test, measurement, and control systems. Key features include a typical on-resistance of 35 ohms, maximum on-resistance matching of 3 ohms between switches, and maximum on-resistance flatness of 4 ohms across the signal range. These characteristics help limit resistance variation when a switched signal changes amplitude. The device is manufactured in an 8-SOIC package for compact surface-mount PCB layouts. The DG418DY+ is part of Maxim Integrated's redesigned precision CMOS monolithic analog-switch family. Its low-leakage behavior is suitable for circuits where the off-state contribution to system error must remain small. The 35-ohm on resistance also makes the switch appropriate for general-purpose low- and moderate-impedance analog signals rather than applications requiring near-zero resistance. Typical uses include battery-powered instrumentation, industrial control systems, data-acquisition equipment, test and measurement setups, and portable or military electronic systems. The 8-pin SOIC package supports conventional surface-mount assembly, while the low power and leakage characteristics suit systems where standby current and signal integrity affect overall performance. When designing around the DG418DY+, verify the control logic, supply arrangement, input signal range, and external pull-up or pull-down requirements against the manufacturer pin description and application guidance. The switching node should also be kept away from fast digital return paths to reduce coupling into the analog signal path. This product page combines the manufacturer specifications, drop-in replacement research, a package and pinout reference, and practical engineering guidance to support component selection and PCB implementation.

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DG419CY+ - 35Ω SPDT Analog Switch | Analog Devices
DG419CY+

DG419CY+ - 35Ω SPDT Analog Switch | Analog Devices

The Analog Devices DG419CY+ is a precision CMOS monolithic SPDT analog switch with 35Ω maximum on-resistance, one switch circuit, and an 8-SOIC package. The device operates from 10V to 30V as an analog switch and supports ±4.5V to ±20V dual-supply operation. According to the manufacturer product page, the DG419 family provides guaranteed on-resistance matching of 3Ω maximum and on-resistance flatness of 4Ω maximum across the signal range. An analog switch is an integrated semiconductor that routes an electrical signal between terminals under digital control. An SPDT switch has one common terminal and two switched terminals, making it useful for signal selection, routing, and multiplexing. Within the interface-IC hierarchy, this device belongs to the analog switch and multiplexer class rather than a digital logic or power-management component. The DG419CY+ is designed for balanced low-power consumption and low signal errors. Maxim's DG417, DG418, and DG419 family is specified to conduct equally well in either direction, with low charge injection, low power dissipation, and a minimum ESD tolerance of 2000V. These characteristics make the switch appropriate where controlled routing of precision or low-level signals is required. Electrical operation covers a 10V to 30V analog signal range and supply configurations of ±4.5V to ±20V. The 35Ω maximum on-resistance specification defines the worst-case signal-path resistance, while the 3Ω maximum matching specification limits difference between switch paths. Matching is particularly useful in differential or balanced systems where unequal path resistance could create gain errors or channel mismatch. Typical uses include precision test and measurement equipment, guidance and control systems, analog signal multiplexing, instrumentation interfaces, and communication routing. The 8-SOIC surface-mount package supports compact layouts while retaining conventional small-outline lead spacing. Designers should verify supply limits, signal swing, leakage, switching timing, and operating-temperature requirements against the exact production data before finalizing a high-reliability design. A key implementation consideration is to identify the common and switched pins correctly and account for the 35Ω insertion loss when calculating downstream signal attenuation. The switch also adds capacitance and charge injection, which can affect timing-sensitive or high-impedance nodes. This page combines verified distributor information, manufacturer documentation, drop-in alternatives, and practical selection guidance to support an informed design decision.

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DG419DJ+ - 35Ω Precision SPDT CMOS Switch | Analog Devices
DG419DJ+

DG419DJ+ - 35Ω Precision SPDT CMOS Switch | Analog Devices

Analog Devices DG419DJ+ is a precision, monolithic CMOS SPDT analog switch with one 2:1 switch circuit, a 35 Ω on-resistance rating, and an 8-pin PDIP package. The device uses low charge injection and low power consumption to route analog signals with minimal disturbance. According to the Analog Devices product page, the redesigned DG417, DG418, and DG419 family guarantees on-resistance matching of 3 Ω maximum between switches and on-resistance flatness of 4 Ω maximum over the signal range. An analog switch is a semiconductor device that connects or disconnects signal paths under digital control. The SPDT topology provides one common terminal and two switched terminals, making the DG419DJ+ useful for signal selection, polarity routing, test-point isolation, and channel multiplexing. In the broader hierarchy, it is an analog switch, an interface IC, and a discrete signal-routing function that complements power management, data converters, and communication components. Key benefits include a maximum on-resistance of 35 Ω, bidirectional signal conduction, low charge injection, low power consumption, and ESD tolerance of at least 2000 V per Method 3015.7. The 44 V maximum supply rating gives the device useful headroom for dual-supply analog systems, while the VSS-to-VDD analog signal range supports switching across positive and negative rails. The package is an 8-pin PDIP, allowing conventional through-hole assembly rather than requiring a fine-pitch surface-mount footprint. The DG419DJ+ is built around a monolithic CMOS analog-switch architecture. Its two throws provide complementary routing paths, while the control input determines which terminal is connected to the common node. Matching between the switched paths is important in precision systems because unequal resistance can create gain or attenuation differences after the signal changes direction. The family’s specified 3 Ω maximum matching therefore helps preserve channel consistency. Typical uses include precision signal-path routing in test and measurement equipment, analog front-end channel selection, instrumentation multiplexing, and bipolar analog-signal switching. In a measurement circuit, the common terminal can be connected to either sensor or reference path. In a test system, it can isolate a device-under-test input while keeping the external node disconnected from the source. Designers should account for the 35 Ω on-resistance when calculating signal attenuation, and should verify charge injection against the accuracy required by the selected amplifier or converter. Supply bypassing and control-signal timing also require attention because the CMOS switch and surrounding analog circuitry must remain stable across the intended signal and common-mode ranges. This page consolidates the verified manufacturer information, distributor availability data, package details, parameter comparisons, and practical switching considerations. It also separates confirmed DG419 family characteristics from parameters that were not available in the supplied source data, helping engineers evaluate the DG419DJ+ without relying on unverified specifications.

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DG419DY+ - 35Ω Precision CMOS SPDT Switch | Analog Devices
DG419DY+

DG419DY+ - 35Ω Precision CMOS SPDT Switch | Analog Devices

The Analog Devices DG419DY+ is a single-channel precision CMOS analog switch in an 8-SOIC package, configured as one SPDT or 2:1 multiplexer. Its headline ratings include a maximum on-resistance of 35 Ω, guaranteed on-resistance matching of 3 Ω maximum between switches, and on-resistance flatness of 4 Ω maximum over the signal range. The monolithic switch supports analog signal ranges from 10 V to 30 V and supply operation from 4.5 V to 20 V. An analog switch is an electronic routing component that connects or disconnects signal paths under digital control. The SPDT architecture transfers one common terminal between two switched terminals, making it suitable for signal selection, polarity routing, test-point isolation, and bidirectional signal-path control. As a precision CMOS switch, the DG419DY+ belongs to the interface IC and analog switch hierarchy while adding low power consumption and bidirectional operation. The DG419 family combines matched on-resistance, flat on-resistance behavior, low charge injection, and low power consumption. Maximum on-resistance matching of 3 Ω supports applications where closely matched paths reduce gain or timing errors. The specified on-resistance flatness of 4 Ω limits resistance variation as the analog voltage changes, which is valuable in precision measurement and signal-conditioning systems. The improved DG419 design also provides an ESD tolerance of 2000 V minimum under Method 3015.7. The switch operates bidirectionally, allowing signals to flow through the selected path in either direction. Its CMOS implementation supports low power dissipation without requiring a normally closed mechanical contactor. Charge injection can create transient errors when the control state changes, so systems using the switch for sampling or high-impedance measurements should account for control timing, source impedance, and downstream capacitance. Typical applications include precision test equipment, guidance and control systems, battery-powered instruments, data-acquisition front ends, and switching networks for low-frequency analog signals. The DG419DY+ is particularly appropriate when a compact 8-SOIC footprint, matched resistance, and low-noise switching are more important than the very low capacitance of specialized RF switch products. Use the manufacturer pin-description table when assigning PCB tracks and confirm the control polarity and terminal arrangement for the exact DG419DY+ orderable device. Keep the switched signal within the stated analog and supply ratings, provide a stable control reference, and account for charge injection when the switch changes state. This product page combines the DG419DY+ datasheet specifications, verified manufacturer and distributor sources, compatible replacement candidates, and application-oriented engineering guidance. It also distinguishes direct footprint alternatives from functional substitutes so engineers can assess drop-in replacement risk before modifying an existing analog switching circuit.

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DG419DY-T1-E3 - Precision CMOS SPDT Analog Switch | Vishay
DG419DY-T1-E3

DG419DY-T1-E3 - Precision CMOS SPDT Analog Switch | Vishay

The Vishay Siliconix DG419DY-T1-E3 is a single-pole double-throw (SPDT) precision monolithic CMOS analog switch that combines low power consumption with high switching speed and excellent signal integrity. Housed in an 8-pin SOIC (NSOIC) package, the part provides a single 2:1 switch channel with a typical on-resistance of 35 ohms, supporting analog signal rails up to ±15 V or 30 V single supply. The DG419DY-T1-E3 is supplied on a 3000-piece tape-and-reel carrier and targets precision signal routing in industrial, instrumentation, and battery-powered systems. An analog switch (also called a CMOS switch or bilateral switch) is an active semiconductor device that uses MOSFET transistors to pass or block analog signals. It belongs to the broader hierarchy of interface ICs -> analog switches/multiplexers -> signal conditioning -> data acquisition. Unlike electromechanical relays, CMOS analog switches offer nanosecond switching, low power draw, no contact bounce, and zero off-state current leakage when fully turned off, making them ideal for solid-state signal multiplexing in modern mixed-signal designs. Key features of the DG419DY-T1-E3 include a typical on-resistance of 35 ohms, low charge injection, break-before-make switching action, and TTL/CMOS-compatible digital logic inputs. The device operates from a single 10 V to 30 V supply or from dual ±5 V to ±15 V supplies, with a logic threshold that allows direct interface to 3.3 V or 5 V microcontrollers. Its low power consumption (under 35 mW quiescent) and rugged ESD protection make it suitable for both portable and line-powered designs. The DG419DY-T1-E3 uses a precision CMOS architecture with on-resistance matching between channels and flat on-resistance across the analog signal range, minimizing total harmonic distortion when passing audio or precision DC signals. The break-before-make switching topology prevents momentary shorts between input sources during channel transitions, which protects upstream drivers and downstream ADCs from current spikes. Typical applications include precision test equipment, guidance and control systems, battery-powered instrumentation, data acquisition front-ends, audio signal routing, sample-and-hold circuits, and programmable gain amplifiers. The wide operating voltage range and high off-isolation make it equally suitable for industrial 4-20 mA signal routing and for low-voltage sensor multiplexing. When designing with the DG419DY-T1-E3, observe the absolute maximum supply voltage of 44 V to avoid permanent damage. Place 0.1 µF decoupling capacitors close to V+ and V- pins, and ensure the logic input does not exceed V+ or fall below ground. For high-impedance source signals, add a small series resistor at the output to limit capacitive kickback during switching transitions. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, helping engineers select the right CMOS switch and validate its drop-in compatibility against the most popular Vishay, Maxim Integrated, and Texas Instruments equivalents.

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DG421CJ - Dual SPST Analog Switch | Analog Devices
DG421CJ

DG421CJ - Dual SPST Analog Switch | Analog Devices

The Analog Devices DG421CJ is a low-power CMOS analog switch containing two independently controlled SPST-NO switches, each with a maximum on-resistance of 35 ohms. The device is packaged in a 16-pin through-hole DIP and is specified for dual 15 V supply operation. Its latched control inputs support retained switch state and are suited to analog signal routing, instrumentation, test equipment, and industrial control systems. An analog switch is a semiconductor device that connects or isolates signal paths under digital control. The DG421CJ belongs to the analog switch hierarchy within multiplexers and interface ICs. Unlike a mechanical relay, it offers compact size, low switching power, and fast electronic control. Its normally open configuration provides a defined open state when a control input is deasserted, while the paired switches can route two independent channels or provide isolation between source and measurement circuitry. Key features include guaranteed on-resistance matching of 3 ohms maximum between switches and on-resistance flatness of 4 ohms maximum over the signal range. Typical on-resistance is 20 ohms, and the low-power CMOS design is intended to minimize power consumption in multi-switch systems. The 16-PDIP package uses a 0.300-inch, 7.62 mm body width and supports conventional through-hole PCB assembly rather than surface-mount reflow. The switch architecture provides independent control paths for two SPST-NO channels. Guaranteed matching between the two switches is useful when both devices must present similar resistance to sampled signals. Flatness limits resistance variation across the selected signal range, helping preserve measurement consistency when the source voltage changes. Low-power CMOS operation also makes the device appropriate for portable test and measurement systems where supply efficiency and predictable signal behavior are important. Typical uses include battery-powered instrumentation, automated test equipment, analog measurement front ends, sample-and-hold isolation networks, and industrial interface modules. The two channels can be used for measurement-source selection, signal isolation, or alternating access to two external circuits. In systems with higher voltage levels, designers must confirm the complete absolute-maximum and signal-range limits in the manufacturer datasheet before applying the switches outside the intended dual-supply domain. For PCB layout, place the device so its through-hole leads do not cross sensitive analog traces, and route switched signals away from clocks, relay drivers, and switching power converters. Use a common ground reference for control and analog circuitry. Because this legacy part is obsolete, production replacements should be qualified for pin compatibility, supply voltage, on-resistance, leakage current, switching speed, and temperature range rather than selected by package name alone. This product page organizes the DG421CJ technical characteristics, sourcing information, application guidance, and drop-in replacement assessment. It also distinguishes verified device capabilities from engineering checks that should be completed before approving any substitute in an existing analog signal path.

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DG421DJ - Low-Power Latched SPST CMOS Switch | Maxim
DG421DJ

DG421DJ - Low-Power Latched SPST CMOS Switch | Maxim

The Maxim Integrated DG421DJ is a low-power CMOS analog switch with latch, configured as a dual SPST switch and supplied in a 16-pin DIP package. Its headline characteristics include a typical on-resistance of 20 ohms, guaranteed on-resistance matching of 3 ohms maximum between switches, and guaranteed on-resistance flatness of 4 ohms maximum across the signal range. The device is intended for industrial-grade applications requiring low-power signal routing with controlled channel resistance. An analog switch is a semiconductor device that connects or disconnects an electrical signal path under digital control. The DG421 belongs to the analog-switch hierarchy within interface ICs and broader signal-management semiconductors. Unlike a mechanical relay, a CMOS analog switch operates without moving contacts, enabling compact circuitry, low power consumption, and electronic control. Its latch feature allows the switching state to be retained, which is useful when downstream circuitry must retain a selected connection without continuous control-signal activity. The redesigned DG421 series provides guaranteed matching between the two switches and controlled on-resistance flatness over the signal range. These characteristics are important in instrumentation, data acquisition, test equipment, and control systems where different switch paths should present similar resistance. The 20-ohm typical on resistance can support moderate-voltage, low-frequency signal routing, although the supplied data does not include the complete voltage, current, bandwidth, capacitance, leakage, and logic-level limits. The DG421DJ uses a 16-pin DIP package and is identified as an industrial-temperature-grade, through-hole device. Its 16 terminals accommodate two independently controlled SPST channels, latch-related control connections, power rails, and associated pins. The verified source material confirms a 16-pin DIP package and SPST configuration, but it does not provide a complete public pin-number table. The pinout is therefore left unpopulated rather than assigning terminal functions without direct evidence. Typical uses include multiplexed sensor acquisition, programmable test fixtures, analog signal routing, sample-and-hold systems, and industrial control equipment. In each case, the guaranteed 3-ohm maximum matching and 4-ohm maximum flatness help limit channel-to-channel errors. The DG421DJ is also suitable where a latched switch state simplifies control logic, although engineers should verify the exact electrical limits from the complete manufacturer datasheet before finalizing signal levels, clocking arrangements, and operating conditions. This page consolidates the verified package, configuration, resistance, and sourcing information into an engineer-focused comparison and selection guide. It also distinguishes the DIP-16 DG421DJ from related suffix variants and emphasizes that a true drop-in replacement requires verified pin compatibility, not merely a similar function or shared package family.

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DG423DJ+ - Triple SPDT CMOS Analog Switch | Analog Devices
DG423DJ+

DG423DJ+ - Triple SPDT CMOS Analog Switch | Analog Devices

Analog Devices DG423DJ+ is a low-power CMOS analog switch with latches, three independently controlled SPDT channels, a typical on-resistance of 20 ohm, and a 16-pin through-hole DIP package. The device supports low-power operation while maintaining a maximum on-resistance matching of 3 ohm between switches and maximum on-resistance flatness of 4 ohm across the signal range. A CMOS analog switch is a semiconductor device that routes electrical signals between circuit nodes under digital control. The DG423DJ+ belongs to the analog switch and switch-and-multiplexer hierarchy, where it functions as a low-power signal-routing interface between sensors, measurement circuits, amplifiers, converters, and digital control logic. Its latched control interface allows the selected signal path to remain stable while reducing repeated control activity. The DG423 family provides guaranteed on-resistance matching of 3 ohm maximum and on-resistance flatness of 4 ohm maximum. These characteristics are important when several channels must present similar resistance to downstream circuitry. Maximum charge injection is 15 pC, helping limit timing disturbance when control signals change the selected path. The switch also provides ESD tolerance of 2000 V minimum under Method 3015.7. The three SPDT channels give the device useful routing flexibility for test-point selection, signal-path switching, and sampling networks. Each channel can connect one common terminal to either of two selectable terminals, allowing a compact design to implement muxing, polarity selection, or source selection. Because the DG423DJ+ is packaged in a 16-pin DIP, it is also appropriate for prototypes, educational equipment, and through-hole industrial assemblies. Typical uses include multimeter and oscilloscope input routing, automated test systems, instrumentation signal conditioning, battery-powered measurement equipment, and industrial control interfaces. Latched operation can reduce control-bus activity in systems where the selected channel must persist between updates, although the exact latch and enable behavior should be confirmed in the manufacturer datasheet before final sequencing logic is designed. For new PCB layouts, the principal trade-off is package footprint rather than switching performance: the 16-pin DIP is easy to prototype but occupies more board area than a surface-mount alternative. Confirm signal levels, supply voltage, logic thresholds, switch logic, and absolute maximum ratings against the manufacturer datasheet before connecting external signals. This page consolidates the documented electrical characteristics, practical routing applications, drop-in comparison information, and PCB implementation guidance needed to evaluate the DG423DJ+ during component selection.

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DG425CY - 16-Pin CMOS Latching Analog Switch | Analog Devices
DG425CY

DG425CY - 16-Pin CMOS Latching Analog Switch | Analog Devices

The Analog Devices DG425CY is a low-power CMOS analog switch with latches, a dual DPST configuration, and a 16-pin SOIC package. Its headline characteristics include 20 Ω typical on-resistance, guaranteed on-resistance matching up to 3 Ω, on-resistance flatness up to 4 Ω across the signal range, and charge injection limited to 15 pC maximum. The switch is intended for low-power signal-routing systems where latched control, low charge injection, and low-power operation are important. An analog switch is a semiconductor device that routes electrical signals between input and output terminals under digital control. The DG425 belongs to the broader CMOS switch and multiplexer hierarchy, where multiplexer and demultiplexer functions determine which signal paths are connected. Its integrated latch retains the control state, reducing the need for continuously maintained control signals and helping lower system power consumption. The DG425 family also supports bidirectional signal conduction, allowing the selected paths to carry signals in either direction. The redesigned DG421, DG423, and DG425 devices provide guaranteed matching and flatness, making channel behavior more predictable than an unqualified resistance specification alone. The DG425CY combines these switch characteristics with a maximum charge injection of 15 pC and an ESD tolerance of at least 2000 V per Method 3015.7. These characteristics make the device useful where switching transients, channel mismatch, or ESD exposure could affect signal integrity. The CMOS implementation supports operation from dual supplies, including a -15 V to +20 V total supply span in the cited DG425CY-T technical data. Switching timing data cited for that ordering variant includes approximately 250 ns turn-on and 200 ns turn-off. Because DG425CY is a specific package and temperature-ordering variant of the DG425 family, engineers should verify the complete ordering code, supply limits, control logic, and electrical limits against the manufacturer datasheet before production release. Typical uses include battery-powered instrumentation, test-equipment signal routing, data-acquisition systems, communication equipment, and analog measurement circuits. The latching control is particularly useful when a selected measurement path must remain connected while the host processor sleeps. The device can also serve in circuits requiring a pair of independently latched double-pole paths for source, range, or channel selection. The principal design consideration is maintaining adequate logic-level compatibility across the complete supply range. Because control thresholds can change with VDD and VSS, external logic should not be assumed to remain compatible throughout every operating condition. PCB layout should keep analog traces short, provide a stable ground reference, and place bypass capacitors close to the supply pins. Designers should also evaluate injected charge against the input impedance and acquisition bandwidth of the downstream circuit. This page consolidates the verified manufacturer and distributor information for DG425CY with package details, application guidance, lifecycle considerations, and replacement qualification notes. It is intended to help engineers distinguish a true same-footprint replacement from a related family member whose latch configuration, temperature grade, package code, or electrical limits differ.

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DG425DJ - Low-Power CMOS Latched Analog Switch | Maxim Integrated
DG425DJ

DG425DJ - Low-Power CMOS Latched Analog Switch | Maxim Integrated

The Maxim Integrated DG425DJ is a low-power CMOS monolithic analog switch with latch control, supplied in a 16-pin DIP package. The device provides dual analog switching with a typical on-resistance of 20 Ω, guaranteed on-resistance matching between switches of 3 Ω maximum, and on-resistance flatness over the signal range of 4 Ω maximum. Its specified characteristics support signal-path routing in microprocessor-controlled analog and industrial systems. An analog switch is an electronic semiconductor device that routes electrical signals between circuit paths under digital control. CMOS analog switches combine low power consumption with high input impedance and bidirectional signal conduction. The DG425 family belongs to the analog switch and multiplexer hierarchy, where switches select or isolate analog signals while multiplexers combine multiple inputs into a common output. The latched control interface allows the selected signal path to remain in its commanded state without continuous control activity. The DG425DJ offers equal on-resistance matching between switches, with the manufacturer specifying 3 Ω maximum. Its typical on-resistance is 20 Ω, while flatness across the signal range is limited to 4 Ω maximum. These matching and flatness characteristics reduce channel-dependent gain and timing differences when the device is used for precision signal selection. The switch also provides bidirectional conduction, making it suitable for signal paths where the source direction can change. Charge injection is limited to 15 pC maximum, a useful specification when the switch controls sampled or held analog signals. The device provides ESD tolerance of at least 2000 V under Method 3015.7. Off leakage is specified below 5 nA at +85 °C, supporting isolation between inactive and active channels. Latch timing values include tWW of 200 ns maximum, tDW of 100 ns maximum, and tWD of 100 ns maximum. Typical applications include microprocessor-controlled signal routing, test and measurement systems, industrial control interfaces, data acquisition equipment, and analog signal multiplexing. The latch allows firmware or hardware control logic to establish a connection and then reduce switching-control activity, provided the selected state is not affected by later pulses. When laying out a DG425DJ circuit, route sensitive signals with short traces and provide a stable ground reference. Keep latch-control traces away from analog inputs because coupling from fast digital transitions can disturb held nodes or inject charge into downstream amplifiers. Confirm signal amplitude, bandwidth, leakage, and logic levels against the complete manufacturer datasheet before production use. This page combines the verified DG425DJ manufacturer and distributor information with explicit data-gap markers, application guidance, family comparisons, and selection advice. It does not substitute estimated electrical specifications for values absent from the retrieved source data.

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DG441 - Quad SPST NC CMOS Analog Switch | Analog Devices
DG441

DG441 - Quad SPST NC CMOS Analog Switch | Analog Devices

The Analog Devices DG441 is a monolithic quad SPST (normally closed) CMOS analog switch containing four independent single-pole single-throw switches with TTL and CMOS compatible digital inputs and an internal voltage reference for logic thresholds, housed in 16-pin DIP and SOIC packages. It is specified as a drop-in replacement for the popular DG201A and DG202 series switch sockets. An analog switch is an electronically controlled relay built on CMOS transmission-gate technology: a logic-level control input opens or closes a bidirectional signal path that conducts equally well in either direction. Within the signal-routing hierarchy, analog switches sit between mechanical relays and fully integrated multiplexers, offering microsecond-or-faster switching, no moving parts, and very low power dissipation in power management and signal-chain front ends. Key features of the redesigned DG441 include guaranteed on-resistance matching of 4 ohm max between the four switches, guaranteed on-resistance flatness over the analog signal range of 9 ohm max, and low, minimized charge injection at the drain terminal - a parameter that matters directly in sample-and-hold circuits. Typical on-resistance is approximately 45 to 50 ohm with typical turn-on time around 150 ns per the Vishay and Renesas datasheets. Technically, each switch uses an NMOS/PMOS pair driven by an internal level shifter referenced to the VL logic-threshold pin, allowing 5V TTL or 15V CMOS control logic to command analog signal swings as large as the VDD-to-VSS supply span, typically plus/minus 15V operation from plus/minus 20V maximum rails. Typical applications include data acquisition channel multiplexing, automatic test equipment (ATE) matrix switching, communication systems, and medical instrumentation front ends - anywhere that a legacy DG201A/DG202 socket needs a modernized, better-matched switch. Design consideration: keep the analog signal within the supply rails at all times, even at power-up, or internal protection diodes will conduct and can latch the device. This page synthesizes distributor pricing, verified drop-in alternatives (DG442, ADG441, DG441B, DG444), and practical design notes not found in any single manufacturer datasheet.

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DG441CY+ - Quad SPST 85Ω Analog Switch | Analog Devices
DG441CY+

DG441CY+ - Quad SPST 85Ω Analog Switch | Analog Devices

Analog Devices DG441CY+ is an improved quad SPST analog switch IC with four independent normally closed switches, an 85 Ω maximum on-resistance specification, and a 16-pin narrow SOIC package. The device is designed for routing low-voltage analog or digital signals when a low on-resistance, controlled off-state behavior, and compact integration are required. Its four switches support a 1:1 multiplexing configuration according to the manufacturer and distributor product listings. An analog switch is a solid-state semiconductor device that uses control logic to connect or disconnect signals without mechanically moving electrical contacts. The DG441 belongs to the analog switch and multiplexer hierarchy: analog switch IC, multiplexer/demultiplexer IC, interface IC, and integrated circuit. Compared with mechanical relays, an integrated analog switch can operate faster, consume less space, and avoid mechanical contact wear, although its voltage and current ratings remain more restrictive. The manufacturer data sheet identifies four independent SPST switches, on-resistance matching of no more than 4 Ω, on-resistance flatness of no more than 9 Ω across the signal range, and equal conduction behavior in either direction. It also specifies low charge injection of no more than 10 pC, low power consumption of 1.65 mW, and ESD tolerance of at least 2,000 V. The distributor listing identifies the DG441CY+ as a 4-circuit, 1:1 switch with 85 Ω maximum on-resistance in a 16-SOIC package. The SPST topology provides one signal path per switch, while the normally closed state establishes the conduction path before a control input changes state. This makes the device useful for controlled grounding, signal isolation, test-point routing, sample-and-hold paths, and peripheral selection. The low on-resistance matching and flatness reduce gain or timing errors when multiple channels must conduct with consistent resistance. Typical uses include test and measurement systems, data-acquisition equipment, battery-powered instruments, audio and communications equipment, and industrial control systems. The compact 16-SOIC package simplifies board integration, while the quad-channel configuration can implement several switched signal paths in one device. System designers should still verify signal amplitude, bandwidth, leakage, control logic levels, and switch lifetime against the manufacturer data sheet. The principal design consideration is off-state isolation. Although the normally closed switches provide a defined default path, leakage and capacitance can still couple adjacent signals. Keep sensitive routing paths short, use an appropriate ground reference, and control the switches with logic levels compatible with the supply voltage. This page combines verified manufacturer and distributor information, package details, comparison data, and practical replacement guidance for engineers evaluating the DG441CY+.

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DG441DJ+ - Quad SPST Analog Switch | Vishay | 16-DIP
DG441DJ+

DG441DJ+ - Quad SPST Analog Switch | Vishay | 16-DIP

Vishay Intertechnology DG441DJ+ is a low-power, quad SPST CMOS analog switch with four independent 1:1 signal paths, 85 Ω typical on-resistance, and a 16-pin DIP package. It supports positive and negative analog supplies, with operating ranges of 10 V to 30 V for dual supply operation and 4.5 V to 20 V for single-supply operation. The device is designed for routing low-voltage analog signals where compact logic control, low power consumption, and bidirectional conduction are useful. An analog switch is a semiconductor device that connects or disconnects an analog signal path under digital control. A single-pole single-throw, or SPST, switch provides one independently controlled conducting path. As a CMOS analog switch, the DG441DJ+ belongs to the interface IC category and uses MOSFET structures to achieve low on-resistance, low leakage, and low control power. Unlike a mechanical relay, it switches much faster and consumes no sustained coil energy. Key electrical features include a low typical on-resistance of 85 Ω, on-resistance matching of 4 Ω maximum between switches, and on-resistance flatness of 9 Ω maximum over the signal range. The switch operates equally well in either direction. Low leakage of 80 pA and a switching time of 150 ns make it useful for precision signal routing, while the 16-pin DIP package supports conventional through-hole PCB assembly. The manufacturer documentation describes improved DG201A and DG202-series compatibility, TTL/CMOS-compatible control logic, and single-supply capability. Different versions of the family documentation list different power-consumption figures, including 0.2 mW in legacy family material and 1.65 mW in revised documentation; the applicable production datasheet should therefore govern final design decisions. The verified product listing identifies the DG441DJ+ as a quad SPST switch in a 16-pin DIP package. Typical uses include data-acquisition systems, sensor multiplexing, analog test equipment, sample-and-hold circuits, battery-powered instruments, and precision measurement front ends. The four independent switches can route four signals independently or be controlled in coordinated sequences. Because on-resistance can vary with signal voltage, analog engineers should account for the specified resistance and flatness when calculating gains and settling behavior. A key design consideration is the relationship between control levels and supply voltage. TTL/CMOS-compatible logic simplifies interfacing, but the selected supply configuration and input levels must remain within the manufacturer limits. The DIP package also requires adequate spacing around the leads for soldering and cleaning, while signal traces should remain short to minimize added capacitance and coupling during the 150 ns switching transition. This page consolidates manufacturer documentation, distributor identification, package information, and verified cross-reference information into an engineering-focused guide. It also distinguishes confirmed drop-in candidates from unsupported alternatives, making the comparison more useful than a basic distributor listing when PCB footprint, switch function, and supply compatibility must be verified before substitution.

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DG441DJZ - Quad SPST NC 85Ohm Analog Switch | Renesas
DG441DJZ

DG441DJZ - Quad SPST NC 85Ohm Analog Switch | Renesas

The Renesas Electronics DG441DJZ is a monolithic quad SPST normally-closed CMOS analog switch IC with 85 ohm maximum on-resistance, operating from a total supply range of 5V to 34V (typically +/-15V rails), housed in a 16-pin PDIP package. It contains four independent single-pole single-throw switches with TTL and CMOS compatible logic inputs and an internal voltage reference for logic thresholds. An analog switch is a semiconductor device that routes or blocks analog signal paths under digital control, sitting within the broader hierarchy of signal-switching devices: analog switch, multiplexer/demultiplexer family, and interface ICs. Quad SPST switches are favored where independent, per-channel on/off control of four signal lines is needed without combining channels into a common bus, as a conventional multiplexer would require. Key features of the DG441DJZ include four independently addressable normally-closed switches, 85 ohm guaranteed maximum on-resistance, TTL and CMOS logic compatibility across the full supply range, and drop-in compatibility with the popular DG201A and DG202 series devices. The DJZ suffix denotes the industrial temperature grade in a 16-pin plastic DIP package, supporting through-hole assembly for industrial and instrumentation designs. Architecturally, the DG441 family uses monolithic CMOS construction that conducts equally well in either signal direction, allowing bidirectional signal flow. An internal voltage reference stabilizes logic thresholds against supply variation, keeping switching thresholds deterministic when driven by TTL or CMOS logic over the specified operating range. Typical applications include precision test and measurement signal routing, industrial programmable logic controller (PLC) analog front ends, audio and video signal switching, sample-and-hold circuits, and communication equipment relay replacement where solid-state switching improves reliability and eliminates contact bounce. When designing with the DG441DJZ, observe supply sequencing and ensure signal swings stay within the supply rails to prevent latch-up; the normally-closed configuration means channels conduct at power-off logic states, which must be considered in fail-safe designs. This page synthesizes distributor pricing, drop-in alternative cross-references, and practical design notes not found in the manufacturer datasheet.

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DG441DY+ - 4-Channel SPST Analog Switch | Analog Devices
DG441DY+

DG441DY+ - 4-Channel SPST Analog Switch | Analog Devices

Analog Devices DG441DY+ is an improved quad SPST normally closed analog switch with four independent 1:1 channels, an 85 Ω maximum on-resistance, and a 16-SOIC package. It operates from 4.5 V to 20 V, supports dual supplies from 10 V to 30 V, and provides low charge injection of 10 pC maximum with power consumption of 1.65 mW. An analog switch is a semiconductor device that connects or disconnects signal paths under digital control. The DG441DY+ belongs to the analog-switch hierarchy, where it functions as an interface IC between low-power control logic and external analog signals. Its normally closed configuration provides a defined signal connection before the control input commands a change of state, making it useful in routing, sampling, test, and signal-isolation systems. The device uses four independent SPST-NC channels rather than a multiplexer arrangement. According to the Analog Devices DG441-DG442 datasheet, the redesigned DG441 family provides on-resistance matching of 4 Ω maximum between switches and on-resistance flatness of 9 Ω maximum over the signal range. Each channel conducts equally well in either direction, which supports signal-path designs where input and output roles may change. The DG441DY+ is specified for low power consumption of 1.65 mW and low charge injection of 10 pC maximum. Charge injection is important when switching precision, high-impedance analog nodes because control-clock energy can otherwise appear as an unwanted voltage step. The device also has an ESD tolerance of 2000 V minimum, providing a defined electrostatic-protection capability for exposed analog interfaces. Typical applications include battery-powered test equipment, data-acquisition systems, audio and measurement signal routing, industrial control interfaces, and precision sensor connections. Four independent switches in one 16-SOIC package reduce board area and permit several signal paths to be switched under a common control interface. The dual-supply capability also allows designers to switch bipolar signals when the system provides the required positive and negative rails. When designing a board around the DG441DY+, verify the normally closed signal state during power-up and ensure that every switched node remains within the specified 4.5 V to 20 V single-supply or 10 V to 30 V dual-supply limits. Use the manufacturer pinout and truth table for the exact DY package rather than assuming that a multiplexer's address and enable functions are present. This product data consolidates manufacturer specifications, current distributor availability, package details, and verified drop-in replacement information. It also provides application guidance and selection trade-offs that help engineers move from the datasheet to a production-ready PCB design.

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DG441DYZ - Quad SPST CMOS Analog Switch, 85Ω, 16-SOIC | Renesas
DG441DYZ

DG441DYZ - Quad SPST CMOS Analog Switch, 85Ω, 16-SOIC | Renesas

The Renesas DG441DYZ is a monolithic quad SPST (Single-Pole Single-Throw) CMOS analog switch in a 16-pin SOIC package, designed as a drop-in upgrade for legacy DG201A and DG202 series devices. It integrates four independent SPST switches with 85Ω on-resistance, TTL/CMOS-compatible digital inputs, and an on-chip voltage reference that drives the logic threshold translators. The device operates from a single +5V to +34V supply, from symmetrical ±5V to ±22V supplies, or from asymmetric rails bounded by a 44V maximum, allowing control of signals up to 40V peak-to-peak. An analog switch (also called a CMOS transmission gate or bilateral switch) is a solid-state device that uses MOSFET transistors to pass or block analog and digital signals with very low distortion. The DG441DYZ belongs to the SPST switch family, which functions like a mechanical relay but with faster switching speed, no contact bounce, low power consumption, and bounce-free operation. It sits inside the broader analog switch IC category, alongside multiplexers (MUX), demultiplexers (DEMUX), and cross-point switches, all of which are sub-categories of interface ICs used for signal routing in mixed-signal systems. Key features include 85Ω typical on-resistance, 250 ns turn-on time (tON), a -3 dB bandwidth of approximately 200 MHz, and sub-nanoamp leakage currents. The switch architecture uses a high-voltage silicon-gate CMOS process with an epitaxial layer that prevents latch-up, a reliability concern common to older CMOS analog switches. Each switch exhibits low charge injection, making the part suitable for sample-and-hold circuits and precision multiplexed data-acquisition front-ends. The DG441DYZ is widely deployed in industrial process control, instrumentation, automatic test equipment (ATE), battery-powered telemetry, communication systems, and audio/video signal routing. Its wide supply range, low on-resistance flatness across the signal range, and TTL-compatible logic make it a versatile replacement for electromechanical relays where reliability, size, and switching speed are design constraints. The 16-SOIC (0.154" / 3.90 mm body width) package is pin-compatible with legacy DG201A/DG202 SOIC footprints, allowing direct PCB drop-in upgrades. When designing with the DG441DYZ, observe absolute maximum signal ratings of 44V across the switch and ensure logic inputs do not exceed V+ plus 0.3V. For low-impedance sources, account for the 85Ω on-resistance and its flatness over the analog signal range; for high-impedance loads, the dominant error source is leakage rather than Ron. Always decouple the supply pins with a 0.1 µF ceramic capacitor placed as close to the device as possible to minimize digital-induced noise coupling into the analog path. This page consolidates distributor pricing, AEC-Q-free drop-in alternatives, and PCB-level design notes that extend beyond the Renesas datasheet's typical application circuits to help engineers choose the right analog switch family for production.

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DG442CJ+ - 85Ω Quad SPST Analog Switch | Maxim Integrated
DG442CJ+

DG442CJ+ - 85Ω Quad SPST Analog Switch | Maxim Integrated

The Maxim Integrated DG442CJ+ is a four-circuit, single-pole single-throw CMOS analog switch with an 85Ω on-resistance, 1:1 signal routing, normally open contacts, and a 16-pin PDIP package. The device supports bidirectional signal conduction, provides break-before-make switching, and is designed for analog multiplexing, demultiplexing, sample-and-hold, and general signal-routing applications where a compact through-hole quad switch is required. An analog switch is an electronic routing component that connects or disconnects signal paths under digital control. A SPST switch provides one selectable path, while the DG442CJ+ combines four independent switches in one IC. The normally open configuration leaves each path disconnected until its control signal activates it. Within the interface-IC hierarchy, this device is a CMOS analog switch that bridges external analog circuitry and control logic. The DG442CJ+ uses an 85Ω on-resistance and supports bidirectional operation. Maxim redesigned the DG441 and DG442 families to guarantee on-resistance matching of 4Ω maximum between switches and on-resistance flatness of 9Ω maximum over the signal range. These characteristics help reduce channel-to-channel error when several switched paths must present similar impedance to the source or load. Switching timing includes approximately 170ns and 250ns figures identified for the device family, while the listed off-leakage is 500pA. These characteristics make the switch suitable for moderate-bandwidth analog paths, particularly where low leakage matters more than sub-nanosecond switching performance. The device is identified as a commercial-grade, through-hole part in a rectangular 16-pin PDIP package measuring approximately 0.300 inch wide, or 7.62mm. Typical uses include test-equipment signal routing, precision measurement front ends, audio path selection, data acquisition systems, and industrial control interfaces. Four integrated switches reduce component count compared with four separate single-switch packages, while the parallel normally open structure simplifies channel isolation. The 85Ω impedance should be included in the source and load calculations because it can attenuate high-impedance signals and limit operation at higher frequencies. PCB design should preserve short analog traces, provide a solid ground reference, and keep switching-node capacitance away from sensitive input paths. Because the device is a normally open SPST switch, evaluate whether break-before-make behavior satisfies the application’s interruption requirements. Use the manufacturer pin-description table and typical application circuits when assigning control signals and confirming the connection sequence. This page combines package details, verified distributor records, drop-in replacement guidance, comparison parameters, and practical routing considerations to support faster component selection. It also distinguishes confirmed electrical and package facts from parameters that require confirmation in the manufacturer datasheet.

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DG442CY+ - 85Ω Quad SPST Analog Switch | Analog Devices
DG442CY+

DG442CY+ - 85Ω Quad SPST Analog Switch | Analog Devices

Analog Devices DG442CY+ is a four-circuit, normally open SPST CMOS analog switch with an 85Ω on-resistance, supplied in a 16-pin SOIC package. The device uses four independent 1:1 switches, supports bidirectional signal conduction, and provides matched on-resistance of 4Ω maximum between switches. Its guaranteed on-resistance flatness is 9Ω maximum over the signal range, helping preserve signal amplitude consistency across the four channels. An analog switch is a semiconductor interface that connects or isolates a signal path under digital control. The DG442CY+ belongs to the analog switch and multiplexer hierarchy, where multiplexers combine switching functions with channel-selection logic. Unlike mechanical relays, this CMOS implementation offers compact integration, fast electronic control, low charge injection of 10pC maximum, and low power consumption of 1.65mW. These characteristics make it useful where several independent analog signals must be routed on a compact circuit board. Key features include four normally open SPST channels, an 85Ω on-resistance, 4Ω maximum on-resistance matching between switches, and 9Ω maximum on-resistance flatness over the signal range. The switches conduct equally well in either direction, which simplifies routing design when the source and destination can alternate roles. Charge injection of 10pC maximum helps limit control-transition disturbance, while the low 1.65mW power consumption supports space-constrained and portable equipment. The DG442CY+ is implemented as a monolithic CMOS analog-switch circuit with four independent control paths. Its matched channel resistance reduces gain variation between similarly driven switches, while the controlled flatness limits amplitude distortion as the analog voltage changes. The bidirectional conduction characteristic allows the same device architecture to support source selection, signal isolation, test-point routing, and power-routing functions when voltage, current, and switching-transient limits remain acceptable. Typical applications include audio routing, test and measurement systems, instrumentation, industrial control interfaces, sample-and-hold isolation, and compact embedded signal-conditioning systems. In these applications, the four-channel architecture can route one control signal to four different destinations or isolate several test nodes without requiring four separate packages. Designers should still verify the complete operating-voltage, leakage-current, and switching-time limits against their signal range because those values are not included in the supplied verified excerpts. The primary design consideration is ensuring that switch operation, control-logic levels, and analog signal limits are compatible with the target system. Place the device close to the routed signals to minimize PCB trace capacitance and susceptibility to injection from adjacent switching circuitry. Use a defined ground reference and route control inputs away from sensitive analog nodes. Confirm power-supply sequencing and ensure signal voltages never exceed the device's absolute maximum ratings before enabling the switches. This product record combines the supplied manufacturer and distributor findings with structured comparisons, drop-in alternatives, and application-focused engineering guidance. It also distinguishes verified parameters from information still requiring confirmation from the complete DG441/DG442 datasheet, helping engineers make a defensible sourcing and design decision without converting unsupported assumptions into specifications.

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DG442DJ+ - Quad SPST 85Ω Analog Switch | Vishay Intertechnology
DG442DJ+

DG442DJ+ - Quad SPST 85Ω Analog Switch | Vishay Intertechnology

The Vishay Intertechnology DG442DJ+ is a monolithic quad SPST CMOS analog switch with four independent 1:1 circuits, an 85 Ω on-resistance, and a 16-pin PDIP package. It is designed for analog signal routing where four independently controlled switches are required within one package. The device uses CMOS-compatible control inputs and supports analog switching across signal ranges referenced in the manufacturer documentation. An analog switch is a semiconductor-controlled routing component that connects or disconnects analog signal paths. The DG442DJ belongs to the monolithic CMOS analog-switch hierarchy, where SPST describes one switch path per circuit and quad describes four independent channels. Unlike a multiplexer, each DG442 channel can operate independently rather than sharing a common internal signal path. Key features include four independent SPST switch circuits, an 85 Ω on-resistance, and 1:1 signal routing. The package is a 16-pin PDIP, allowing through-hole assembly and straightforward prototyping. The available product information identifies the DG441 and DG442 families as drop-in replacements for the popular DG201A and DG202 series, which helps engineers evaluate PCB reuse and upgrade paths. Internally, the DG442 uses a monolithic CMOS implementation to provide consistent switching behavior across the four channels. Each channel has a corresponding control input and common ground and power connections. Designers should consult the manufacturer datasheet for the exact control truth table, input and supply limits, switching timing, off-impedance, leakage, and absolute maximum ratings before finalizing a design. Typical uses include analog test systems, instrumentation, signal-conditioning modules, data-acquisition equipment, and industrial control circuits where multiple analog paths must be routed independently. Its four-channel arrangement can reduce component count when a design needs four SPST functions rather than four separate single switch packages. The primary design consideration is confirming that the DG442DJ+ control polarity and timing satisfy the receiving circuit. Because the verified source data does not provide a complete pin table, engineers should verify every connection against the manufacturer datasheet before PCB release. Input signals must also remain within the specified voltage limits. This page consolidates verified distributor information, compatible replacement data, package details, selection guidance, and practical design notes into one engineering-focused resource for the DG442DJ+.

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