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Analog Devices Inc./Maxim Integrated MAX4621EPE+
- Part No.:
- MAX4621EPE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- -
- Datasheet:
-
MAX4621EPE+.pdf
- Description:
- IC INTEGRATED CIRCUIT
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Inventory:2,172
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Product details
Overview
The MAX4621EPE+ from Maxim Integrated is a precision dual SPST analog switch with 5Ω max on-resistance, guaranteed 0.5Ω channel-to-channel RON match, and rail-to-rail analog signal handling (±18V bipolar or +36V single supply). It features <250ns turn-on time, <200ns turn-off time, and <5nA off-leakage at +85°C - ideal for reed relay replacement in test equipment and military radio signal routing.
For engineers reviewing the MAX4621EPE+ datasheet, MAX4621EPE+ pinout, MAX4621EPE+ application, or MAX4621EPE+ equivalent, key selection criteria include guaranteed break-before-make timing (not applicable), dual-supply compatibility, low charge injection (45pC), and pin compatibility with DG401 for mechanical relay upgrades.
Technical Context
The MAX4621EPE+ implements two independent normally-open (NO) analog switches in a monolithic CMOS process. Each switch supports bidirectional signal flow with flat on-resistance (<0.5Ω variation over full ±15V signal range) and TTL/CMOS-compatible logic inputs referenced to VL (typically +5V).
It operates across wide supply ranges: ±4.5V to ±18V (bipolar) or +4.5V to +36V (single-ended), with internal protection diodes clamping analog pins to V+ and V−. No internal level-shifting circuitry is used - logic and analog domains remain electrically isolated except through controlled switching paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance | 5Ω max - ensures minimal signal attenuation and voltage drop in precision analog paths |
| RON match | 0.5Ω max between channels - enables matched gain/attenuation in differential or dual-path circuits |
| Turn-on time | <250ns - supports high-speed multiplexing in automated test systems up to ~1MHz |
| Off-leakage (85°C) | <5nA - preserves DC accuracy in high-impedance sensor front-ends and data-acquisition sample-hold stages |
| Analog range | Rail-to-rail (V− to V+) - allows full-swing AC/DC signals without clipping in ±15V systems |
| Charge injection | 45pC - limits voltage glitch on sampled nodes, critical for low-distortion audio and ADC input conditioning |
| Supply range | +4.5V to +36V or ±4.5V to ±18V - enables direct integration into legacy industrial and avionics power rails |
Pinout & Package
MAX4621EPE+ uses a 16-pin plastic DIP package (0.3-inch width) with through-hole mounting and standard JEDEC MO-016AC footprint. Pin 1 is top-left corner (notch side), with pin 1 identifier via beveled edge or dot marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 6, 8 | V− (Negative Supply) | Bipolar negative rail connection; required for ± supplies, tied to GND for single-supply operation |
| 2, 7 | COM1, COM2 (Common) | Switch output terminals - bidirectional, connect to load or signal chain downstream of switching point |
| 4, 5, 9, 16 | NO1, NO2 (Normally Open) | Open-circuit when INx = LOW; closes to COMx only when corresponding logic input is HIGH |
| 10, 15 | IN1, IN2 (Logic Inputs) | CMOS/TTL-compatible control lines - active-HIGH, referenced to VL, not V+ |
| 12 | V+ (Positive Supply) | Main analog supply rail - sets upper bound of switchable analog signal range |
| 13 | VL (Logic Supply) | Dedicated +5V logic rail - decouples digital switching noise from analog path; must be stable |
| 14 | GND | Analog/digital reference ground - separate from power ground in mixed-signal layouts to minimize noise coupling |
| 11 | N.C. | No internal connection - left unconnected; no pull-up/down or bypass required |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed RON match | 0.5Ω max ensures identical gain error across dual channels in instrumentation amplifier or PGA configurations |
| Rail-to-rail analog handling | Supports full ±15V signal swing without distortion - eliminates need for external level-shifting in legacy military radios |
| Low leakage at temperature | <5nA at +85°C maintains >10GΩ effective impedance in high-precision thermocouple or strain-gauge interfaces |
| Pin compatibility with DG401 | Direct PCB replacement for obsolete mechanical relay drivers - no layout change required for legacy system upgrades |
| Single- and bipolar supply support | Operates identically across +12V, ±15V, or +24V rails - simplifies BOM consolidation across avionics, test, and industrial platforms |
Applications
| Reed Relay Replacement | Test Equipment Signal Routing |
|---|---|
Use Scenario: Replacing electromechanical relays in military HF/VHF transceiver antenna switching matrices where vibration resistance and long-term reliability are critical. IC Role / Device Role / Timing Role: Dual SPST analog switch providing fail-safe open-circuit isolation and low-RON signal path during transmit/receive mode transitions. Use Value: Eliminates relay wear-out, contact bounce, and coil drive complexity while maintaining <−60dB off-isolation at 1MHz for RF front-end integrity. | Use Scenario: Multiplexing calibration references and DUT signals in automated benchtop test systems requiring sub-250ns channel switching. IC Role / Device Role / Timing Role: Precision analog switch enabling fast, repeatable signal path selection with matched on-resistance for gain/offset error minimization. Use Value: Guarantees ≤0.5Ω RON mismatch between channels - critical for auto-calibration routines requiring identical path characteristics. |
| Avionics Sensor Interface | Audio-Signal Routing |
Use Scenario: Conditioning and routing of low-level pressure and temperature sensor outputs in flight control computers operating across −40°C to +85°C. IC Role / Device Role / Timing Role: High-reliability analog switch isolating sensor inputs during self-test sequences while preserving DC accuracy. Use Value: <5nA off-leakage at +85°C prevents >1mV offset drift in 1MΩ sensor bridges - meets DO-160E environmental compliance margins. | Use Scenario: Channel selection in professional audio mixing consoles requiring low THD and zero-crossing switching to avoid pop/click artifacts. IC Role / Device Role / Timing Role: Low-charge-injection (45pC) SPST switch enabling silent mute/unmute of line-level analog audio paths. Use Value: Minimizes transient glitches during switching - measured <10mV peak amplitude disturbance on 2VPP signals at 1kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG401BRZ | Higher 35Ω typical RON, no guaranteed RON match spec, +12V single-supply only | Limited to lower-voltage industrial controls; unsuitable for ±15V avionics or precision test gear | Select only if supply is strictly +12V and RON matching is non-critical |
| TS5A23157DRCR | Lower 0.9Ω RON but rated only to +5.5V supply; no bipolar operation support | Confined to USB-powered portable instruments; cannot replace MAX4621EPE+ in legacy 24V/±15V systems | Use only in new low-voltage designs where rail-to-rail analog range is not required |
Compared with ADG401BRZ and TS5A23157DRCR, the MAX4621EPE+ uniquely delivers guaranteed 0.5Ω RON matching, ±18V bipolar capability, and −40°C to +85°C operation - making it the sole option for high-accuracy, wide-supply, extended-temperature analog switching.
Availability
MAX4621EPE+ is available at Aetrix Electronics and suitable for reed relay replacement, military radio signal routing, and avionics sensor interface applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX4621EPE+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and high-reliability ICs for industrial, automotive, communications, and defense markets.
The MAX4621EPE+ belongs to Maxim's high-performance analog switch family, engineered specifically for replacing electromechanical relays in harsh-environment signal routing where low on-resistance matching, wide supply range, and temperature-stable leakage are mandatory.
FAQ
What is the maximum allowable voltage difference between V+ and V− for the MAX4621EPE+?
The MAX4621EPE+ absolute maximum rating specifies that the voltage difference between V+ and V− must not exceed +44V. This limit applies regardless of individual rail voltages - for example, V+ = +24V and V− = −18V yields a 42V differential, which remains within specification. Exceeding this may cause permanent damage due to internal junction breakdown.
Does the MAX4621EPE+ require external pull-up resistors on its logic inputs (IN1/IN2)?
No, the MAX4621EPE+ does not require external pull-up resistors on IN1 or IN2. Its logic inputs are CMOS/TTL-compatible with defined thresholds (VINH ≥ +2.4V, VINL ≤ +0.8V) and have low input current (±0.5µA max). Driving directly from microcontroller GPIO or FPGA outputs is fully supported without additional biasing components.
Can the MAX4621EPE+ operate with V+ = +24V and V− = GND in single-supply mode?
Yes, the MAX4621EPE+ supports true single-supply operation with V+ = +24V and V− tied to GND. In this configuration, the analog signal range extends from GND to +24V, and the device maintains all specified parameters including 5Ω max RON, <250ns tON, and <5nA off-leakage at +85°C - confirmed in the Single Supply Electrical Characteristics table.
Is the MAX4621EPE+ pin-compatible with the DG401 across all package types?
Yes, the MAX4621EPE+ is pin-compatible with the DG401 in both 16-pin narrow SO and 16-pin plastic DIP packages. The pin functions - including COM1/COM2, NO1/NO2, IN1/IN2, V+, V−, VL, and GND - align exactly per the MAX4621 functional diagram and DG401 datasheet. No PCB redesign is needed for drop-in replacement.
What is the purpose of the VL pin on the MAX4621EPE+, and can it be tied to V+?
The VL pin on the MAX4621EPE+ supplies the internal logic threshold circuitry and must be connected to a stable +5V source. It cannot be tied to V+ unless V+ = +5V - doing so with higher V+ (e.g., +12V or +24V) violates the absolute maximum rating of VL ≤ (V+ + 0.3V) and risks latch-up or logic malfunction. A dedicated +5V regulator or LDO is recommended.
MAX4621EPE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- *
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- -
- Number of Circuits:
- -
- On-State Resistance (Max):
- -
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- -
- -3db Bandwidth:
- -
- Charge Injection:
- -
- Channel Capacitance (CS(off), CD(off)):
- -
- Current - Leakage (IS(off)) (Max):
- -
- Crosstalk:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MAX4621EPE+ FAQ
1.How can I place an order for MAX4621EPE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4621EPE+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX4621EPE+ reliable?
The price and inventory of MAX4621EPE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4621EPE+ is usually 5 days.
3.What payment methods are accepted for MAX4621EPE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4621EPE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4621EPE+?
MAX4621EPE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4621EPE+ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX4621EPE+?
For technical support, including MAX4621EPE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4621EPE+ requirements.
6.How does Aetrix verify that MAX4621EPE+ is sourced from the original manufacturer or authorized distributors?
All MAX4621EPE+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX4621EPE+ meets industry standards.
7.What is the process for return or replacement of MAX4621EPE+?
All MAX4621EPE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4621EPE+, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX4621EPE+ part is unused and in its original packaging.
Return procedure for MAX4621EPE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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