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Analog Devices Inc./Maxim Integrated MAX4621EPE
- Part No.:
- MAX4621EPE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX4621EPE.pdf
- Description:
- IC SWITCH SPST-NO X 2 5OHM 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,961
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Product details
Overview
MAX4621EPE from Maxim Integrated is a precision dual SPST analog switch with 5Ω max on-resistance, 0.5Ω max channel-to-channel RON match, and rail-to-rail analog signal handling (±18V bipolar or +4.5V to +36V single supply). It operates over –40°C to +85°C and is used in military radios, test equipment, and PBX systems where low distortion and high reliability replace mechanical relays.
For engineers reviewing the MAX4621EPE datasheet, MAX4621EPE pinout, MAX4621EPE application, or MAX4621EPE equivalent, key selection criteria include guaranteed break-before-make timing (not applicable), leakage <5nA at +85°C, sub-250ns turn-on time, and pin compatibility with DG401 for reed relay replacement in ruggedized signal routing.
Technical Context
The MAX4621EPE implements two independent normally-open (NO) analog switches fabricated in a monolithic CMOS process. Each switch supports bidirectional signal flow with matched on-resistance across channels and flat RON variation (∆0.5Ω max) over the full ±15V analog range. Input logic is TTL/CMOS-compatible with VL = +5V reference.
It operates from dual supplies (±4.5V to ±18V) or single supply (+4.5V to +36V), enabling seamless integration into mixed-signal systems requiring wide dynamic range. Internal protection diodes clamp signals exceeding V+ or V−, and charge injection is limited to 475pC (typ) to minimize transient errors in data-acquisition paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-resistance (RON) | 5Ω max - ensures minimal signal attenuation and voltage drop at 10mA load current |
| RON match between channels | 0.5Ω max - enables precise gain matching in differential or dual-path signal conditioning |
| Off-leakage current | <5nA at +85°C - preserves accuracy in high-impedance sensor front-ends and sample-hold circuits |
| Turn-on / turn-off time | <250ns / <200ns - supports high-speed multiplexing in automated test equipment (ATE) |
| Analog signal range | Rail-to-rail (V− to V+) - allows full utilization of supply rails without headroom loss |
| Logic supply (VL) | +5V - compatible with standard microcontroller GPIO and FPGA I/O without level shifting |
| Operating temperature | –40°C to +85°C - qualified for industrial and extended-temperature embedded applications |
Pinout & Package
MAX4621EPE is supplied in a 16-pin plastic DIP package (0.3-inch width), with through-hole mounting and industry-standard pin spacing. Pin 14 is GND; pins 1, 3, 6, and 8 connect to V−; pins 2 and 7 are COM1 and COM2; pins 10 and 15 are IN1 and IN2 logic inputs; pins 9 and 16 are NO1 and NO2; pins 12 and 13 are V+ and VL respectively; pins 4, 5, 11 are not internally connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 6, 8 | Negative supply input (V−) | Bipolar operation reference; must be tied to ground or negative rail per supply configuration |
| 2, 7 | Switch common terminal (COM1, COM2) | Signal path input/output node; bidirectional and rail-to-rail capable |
| 9, 16 | Normally open terminal (NO1, NO2) | Open-circuit when inactive; closes to COM upon logic high at corresponding IN pin |
| 10, 15 | Digital logic input (IN1, IN2) | Active-high control; TTL/CMOS compatible with 0.8V/2.4V thresholds |
| 12 | Positive supply input (V+) | Primary analog power rail; supports +4.5V to +36V single or ±4.5V to ±18V dual operation |
| 13 | Logic supply input (VL) | Separate +5V bias for logic interface; isolates digital noise from analog section |
| 14 | Ground (GND) | Reference for logic and internal bias networks; requires low-impedance connection |
| 4, 5, 11 | No internal connection (N.C.) | Unbonded die pads; must remain unconnected on PCB to avoid parasitic coupling |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports full V− to V+ swing without clipping-critical for audio routing and sensor interfaces |
| Guaranteed RON match (0.5Ω max) | Enables matched gain/attenuation in dual-channel instrumentation amplifiers and balanced ADC drivers |
| Low charge injection (475pC typ) | Minimizes voltage glitch on sampled nodes-essential for precision data acquisition and sample-and-hold |
| Pin compatibility with DG401 | Direct drop-in replacement in legacy designs without layout changes or firmware updates |
| Single- and bipolar-supply operation | Eliminates need for separate supply rails in mixed-signal systems-reduces BOM count and board area |
Applications
| Military Radio Signal Routing | Automated Test Equipment (ATE) |
|---|---|
|
Use Scenario: Switching RF front-end calibration paths and antenna diversity signals in handheld and vehicular radios operating across –40°C to +85°C. IC Role / Device Role / Timing Role: Dual SPST analog switch controlling signal path selection under microcontroller command with sub-250ns settling. Use Value: Replaces electromechanical relays with higher reliability, lower power, and smaller footprint while maintaining low insertion loss and channel matching. |
Use Scenario: Multiplexing multiple sensor outputs or stimulus sources into a shared digitizer or signal generator in benchtop ATE platforms. IC Role / Device Role / Timing Role: Precision analog switch enabling fast, low-distortion signal routing with guaranteed RON flatness over full voltage range. Use Value: Delivers consistent measurement accuracy across channels due to ≤0.5Ω RON match and <5nA leakage at elevated temperatures. |
| PBX/PABX Telephony Interface | Avionics Data Acquisition |
|
Use Scenario: Managing line-card signal paths including ring detection, codec interfacing, and hybrid circuit switching in telecom central office equipment. IC Role / Device Role / Timing Role: Dual-channel SPST switch providing isolation and path control with rail-to-rail analog capability and logic-level compatibility. Use Value: Supports wide common-mode range (±15V) and meets stringent leakage requirements (<5nA @ +85°C) for long-term system stability. |
Use Scenario: Conditioning and routing transducer signals (e.g., pressure, temperature, acceleration) in flight control and health monitoring subsystems. IC Role / Device Role / Timing Role: High-reliability analog switch selected for extended temperature range and low charge injection in sampling circuits. Use Value: 475pC typical charge injection prevents step errors in successive-approximation ADC inputs, preserving 16-bit effective resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4621CPE | Same electrical specs but rated for 0°C to +70°C only; identical pinout and package | Suitable for commercial-grade systems without extended temperature requirements | Select MAX4621CPE only if ambient operating temperature remains within 0°C–70°C; MAX4621EPE required for industrial/military thermal profiles |
| ADG401BRZ | 5Ω max RON, but no guaranteed RON match spec; 16-lead SOIC only; no N.C. pins | Lacks channel-matching guarantee and extended-temp qualification; not pin-compatible | Use ADG401BRZ only when RON matching is non-critical and board layout permits SOIC footprint change |
Compared with MAX4621CPE, the MAX4621EPE adds extended temperature support without sacrificing performance or pin compatibility; compared with ADG401BRZ, it delivers guaranteed channel matching and direct DG401 drop-in capability-making MAX4621EPE the preferred choice for precision, ruggedized dual-switch applications.
Availability
MAX4621EPE is available at Aetrix Electronics and suitable for military radio design, automated test equipment, and avionics data acquisition 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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and aerospace markets.
The MAX4621EPE belongs to Maxim's precision analog switch product line, engineered for low-distortion, high-reliability signal routing in mission-critical systems where mechanical relay replacement and channel-matched performance are essential.
FAQ
What is the maximum supply voltage range supported by the MAX4621EPE?
The MAX4621EPE supports dual supplies from ±4.5V to ±18V and single supplies from +4.5V to +36V. Absolute maximum ratings specify V+ to GND up to +44V and V− to GND down to –44V, but sustained operation beyond ±18V or +36V violates datasheet specifications and risks permanent damage. Always observe the recommended operating ranges defined in the Electrical Characteristics tables for MAX4621EPE.
Does the MAX4621EPE require external pull-up or pull-down resistors on its logic inputs?
No, the MAX4621EPE logic inputs (IN1, IN2) are TTL/CMOS-compatible with guaranteed thresholds of 0.8V (low) and 2.4V (high) at VL = +5V, and do not require external biasing. The internal input structure provides sufficient noise margin and drive strength for direct connection to microcontrollers, FPGAs, or logic gates without added resistors-simplifying layout and reducing component count for MAX4621EPE implementations.
Is the MAX4621EPE pin-compatible with the DG401, and what does that mean for legacy designs?
Yes, the MAX4621EPE is explicitly documented as a pin-compatible replacement for the DG401, sharing identical pin functions, numbering, and 16-pin DIP package dimensions. This means existing PCB layouts, schematics, and firmware can be reused without modification-enabling immediate performance upgrades (lower RON, tighter matching, wider supply range) while maintaining full mechanical and electrical interoperability in legacy MAX4621EPE retrofits.
What is the significance of "guaranteed RON match" for the MAX4621EPE, and how is it tested?
The MAX4621EPE guarantees ≤0.5Ω difference between the on-resistances of its two channels (ΔRON = RON1 − RON2), tested across temperature and signal voltage. This specification ensures predictable gain tracking in dual-path circuits like instrumentation amplifiers or differential ADC drivers. Unlike typical datasheet typicals, this match is 100% production-tested-not just characterized-making it a design-critical parameter for MAX4621EPE in precision applications.
Can the MAX4621EPE operate with V+ = +12V and V− = GND (single-supply mode), and how does that affect analog signal range?
Yes, the MAX4621EPE fully supports single-supply operation with V+ = +12V and V− = GND. In this configuration, the analog signal range extends from 0V to +12V (rail-to-rail), and all key parameters-including RON, leakage, and switching speed-remain within datasheet limits. The device maintains the same logic interface (VL = +5V) and pin functionality, making MAX4621EPE equally suitable for single-rail industrial controllers as for bipolar-signal test systems.
MAX4621EPE 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:
- Through Hole
- Supplier Device Package:
- 16-PDIP
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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