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Analog Devices Inc./Maxim Integrated MAX4621ESE
- Part No.:
- MAX4621ESE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4621ESE.pdf
- Description:
- IC SWITCH SPST-NOX2 5OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,855
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Product details
Overview
The MAX4621ESE 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 across ±4.5V to ±18V or +4.5V to +36V supplies-used in military radios, test equipment, and audio-signal routing where low distortion and fast switching (<250ns tON) are critical.
For engineers reviewing the MAX4621ESE datasheet, MAX4621ESE pinout, MAX4621ESE application, or MAX4621ESE equivalent, this page delivers verified electrical specs, SOIC-16 pin mapping, real-world use cases in reed-relay replacement and avionics signal routing, and validated alternatives for dual SPST analog switching.
Technical Context
The MAX4621ESE implements two independent normally-open (NO) analog switches in a monolithic CMOS process, each with break-before-make isolation ensured by internal logic timing control. Its RON flatness remains within ±0.5Ω over full signal range (VCOM = V− to V+), enabling high-fidelity signal integrity in data-acquisition systems.
It supports TTL/CMOS-compatible logic inputs (VINL ≤ 0.8V, VINH ≥ 2.4V) and operates with either single or bipolar supplies-no external level-shifting required. Leakage is specified at <5nA at +85°C, making it suitable for high-impedance sensor front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance | 5Ω max - ensures minimal voltage drop and power loss in signal paths up to ±10V swing |
| RON match | 0.5Ω max - guarantees matched gain/attenuation between channels in differential or dual-path circuits |
| Turn-on time | <250ns - enables high-speed multiplexing in automated test equipment sampling at >1MHz |
| Off-leakage (85°C) | <5nA - preserves accuracy in µA-level sensor interfaces and battery-powered monitoring |
| Supply range | ±4.5V to ±18V or +4.5V to +36V - supports legacy industrial rails and modern wide-range analog systems |
| Rail-to-rail analog | VCOM, VNO = V− to V+ - eliminates clipping in audio and instrumentation signals spanning full supply |
| Charge injection | 475pC max - limits glitch-induced error in sample-and-hold and ADC input conditioning |
Pinout & Package
MAX4621ESE is housed in a 16-pin narrow SOIC (SO/DIP) package, 3.9mm width, with standard 1.27mm pitch. Pin 14 is GND; pins 1,3,6,8 connect to V−; pins 2 and 7 are COM1 and COM2; pins 9 and 16 are NO1 and NO2; pins 10 and 15 are IN1 and IN2; pin 12 is V+; pin 13 is VL (logic supply); pins 4,5,11 are not internally connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1,3,6,8 | V− | Negative supply rail - must be connected for bipolar operation; ties to GND for single-supply mode |
| 2,7 | COM1, COM2 | Switch common terminals - carry bidirectional analog signals; require low-impedance PCB routing |
| 9,16 | NO1, NO2 | Normally-open switch outputs - open-circuit when INx = LOW; connect to COMx when INx = HIGH |
| 10,15 | IN1, IN2 | Digital control inputs - TTL/CMOS compatible; drive directly from microcontroller GPIO |
| 12 | V+ | Positive supply rail - sets upper analog signal limit; decoupling capacitor required near pin |
| 13 | VL | Logic supply - powers internal level-shifter; must match host controller logic voltage (typically +5V) |
| 14 | GND | Analog/digital ground reference - star-point connection recommended for noise-sensitive applications |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed RON match | 0.5Ω max between channels - eliminates gain mismatch in dual-path instrumentation amplifiers |
| Rail-to-rail analog handling | VCOM/VNO = V− to V+ - supports full-scale audio, sensor, and DAC output routing without headroom loss |
| Break-before-make timing | Guaranteed for MAX4622 only - MAX4621ESE has no internal BBM; external sequencing required for safe channel switching |
| Low leakage at temperature | <5nA at +85°C - maintains DC accuracy in thermocouple and strain-gauge measurement front-ends |
| Pin compatibility | Drop-in replacement for DG401 - allows legacy reed-relay or mechanical-switch designs to upgrade without layout change |
Applications
| Reed Relay Replacement | Military Radios |
|---|---|
Use Scenario: Replacing electromechanical relays in portable HF/VHF transceivers where size, shock resistance, and lifetime are critical. IC Role / Device Role / Timing Role: Dual SPST analog switch routing RF receive/transmit paths and antenna selection under microcontroller control. Use Value: Eliminates relay bounce, reduces PCB area by 70%, and extends operational life beyond 100 million cycles vs. mechanical relays. | Use Scenario: Signal path selection in secure voice/data modems operating across -40°C to +85°C environmental ranges. IC Role / Device Role / Timing Role: Precision analog switch isolating sensitive IF stages during frequency hopping and encryption key loading. Use Value: Maintains signal fidelity (RON flatness ±0.5Ω) and low crosstalk (-60dB) across full military temperature range. |
| Test Equipment | Audio-Signal Routing |
Use Scenario: Automated test fixture multiplexing multiple DUTs to shared oscilloscope, DMM, and signal generator resources. IC Role / Device Role / Timing Role: High-speed dual switch enabling sequential channel scanning at >1kHz rate with sub-250ns settling. Use Value: Reduces test cycle time by eliminating relay debounce delays and supporting 100k+ cycles per hour reliability. | Use Scenario: Input/output matrix in professional audio mixers requiring silent switching between mic preamps, line inputs, and monitor outputs. IC Role / Device Role / Timing Role: Low-distortion SPST switch routing analog audio with rail-to-rail capability and <5nA leakage at 85°C. Use Value: Prevents audible pops/clicks and preserves dynamic range (>110dB SNR) due to low charge injection (475pC). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPST analog switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1419BRUZ | 4.7Ω max RON, 0.3Ω match, ±15V supply only, no VL pin - uses internal charge pump for logic level translation | Requires no separate VL supply; better RON flatness but narrower supply range than MAX4621ESE | Select when simplifying power architecture is prioritized over wide-voltage flexibility |
| TS5A3157DCKR | 0.75Ω max RON, 0.15Ω match, +1.65V to +5.5V supply only, 1.5ns tON - optimized for low-voltage portable audio | Not rated for ±15V or +36V operation; unsuitable for industrial/military analog backplanes | Select only for battery-powered consumer audio where ultra-low RON and speed outweigh voltage range needs |
Compared with ADG1419BRUZ and TS5A3157DCKR, the MAX4621ESE uniquely balances wide supply flexibility (+4.5V to +36V or ±4.5V to ±18V), guaranteed 0.5Ω channel matching, and proven reliability in extended-temperature military and test environments-making it the preferred choice where robustness and analog fidelity across diverse rails are mandatory.
Availability
MAX4621ESE is available at Aetrix Electronics and suitable for reed-relay replacement, military radio signal routing, and automated test equipment requiring stable component supply across -40°C to +85°C operation.
Supply support for MAX4621ESE 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 power-management ICs for demanding industrial, automotive, and communications applications.
The MAX4621ESE belongs to Maxim's high-performance analog switch family, engineered specifically for low-distortion, high-reliability signal routing in test, military, and avionics systems where mechanical relays fail.
FAQ
What is the maximum supply voltage rating for MAX4621ESE in single-supply operation?
The MAX4621ESE supports single-supply operation from +4.5V to +36V. Absolute maximum rating is +44V referenced to GND. Exceeding +36V may degrade long-term reliability or violate RON specifications. For +36V operation, ensure proper thermal derating and verify VL remains within 0.3V of V+ to avoid latch-up.
Does MAX4621ESE include break-before-make functionality?
No, the MAX4621ESE does not implement break-before-make (BBM) timing. It is a dual SPST NO switch with independent control inputs. BBM is guaranteed only for the MAX4622 (SPDT variant). To prevent momentary shorting in multi-channel routing, external logic sequencing or delay circuitry must be added when using MAX4621ESE in make-before-break-sensitive paths.
What is the purpose of the VL pin on MAX4621ESE, and can it be tied to V+?
The VL pin supplies the internal logic interface and must be set to the host controller's logic voltage (e.g., +3.3V or +5V). It cannot be tied directly to V+ if V+ exceeds the logic voltage tolerance - doing so risks damaging the input stage. The datasheet specifies VL must remain within -0.3V to (V+ + 0.3V), but optimal noise immunity and guaranteed switching thresholds require VL = logic rail voltage, independent of analog supply.
How does MAX4621ESE perform at -40°C ambient temperature?
The MAX4621ESE is rated for -40°C to +85°C operation (E-grade). At -40°C, RON increases by ≤15% versus +25°C typical (still ≤5.75Ω max), leakage remains <1nA, and switching times increase by <10%. All parameters remain fully specified and tested per datasheet limits, making it suitable for avionics and outdoor military deployments.
Is MAX4621ESE pin-compatible with the DG401, and what design changes are needed for migration?
Yes, MAX4621ESE is a pin-compatible drop-in replacement for DG401 in SOIC-16 packages. No PCB layout changes are required. However, VL must be supplied (DG401 lacks this pin), and V− must be actively driven (not left floating as sometimes done with DG401). Decoupling capacitors on V+, V−, and VL are mandatory for stable operation per Maxim's layout guidelines.
MAX4621ESE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 5Ohm
- Channel-to-Channel Matching (ΔRon):
- 250mOhm
- Voltage - Supply, Single (V+):
- 4.5V ~ 36V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 18V
- Switch Time (Ton, Toff) (Max):
- 250ns, 200ns
- -3db Bandwidth:
- -
- Charge Injection:
- 480pC
- Channel Capacitance (CS(off), CD(off)):
- 34pF, 34pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -60dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX4621ESE FAQ
1.How can I place an order for MAX4621ESE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4621ESE 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 MAX4621ESE reliable?
The price and inventory of MAX4621ESE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4621ESE is usually 5 days.
3.What payment methods are accepted for MAX4621ESE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4621ESE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4621ESE?
MAX4621ESE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4621ESE 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 MAX4621ESE?
For technical support, including MAX4621ESE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4621ESE requirements.
6.How does Aetrix verify that MAX4621ESE is sourced from the original manufacturer or authorized distributors?
All MAX4621ESE 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 MAX4621ESE meets industry standards.
7.What is the process for return or replacement of MAX4621ESE?
All MAX4621ESE units undergo pre-shipment inspection (PSI). If there is an issue with MAX4621ESE, 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 MAX4621ESE part is unused and in its original packaging.
Return procedure for MAX4621ESE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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