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Analog Devices Inc./Maxim Integrated MAX4659ESA+T
- Part No.:
- MAX4659ESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX4659ESA+T.pdf
- Description:
- IC SWITCH SPDT X 1 25OHM 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,419
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Product details
Overview
MAX4659ESA+T from Maxim Integrated is a single-pole/double-throw (SPDT) CMOS analog switch with 25Ω max on-resistance at ±15V, 75mA continuous current handling, and rail-to-rail signal capability - designed for high-current relay replacement in audio routing and test equipment.
For engineers reviewing the MAX4659ESA+T datasheet, MAX4659ESA+T pinout, MAX4659ESA+T application, or MAX4659ESA+T equivalent, key selection criteria include dual-supply operation (±4.5V to ±20V), 1nA max off-leakage at +25°C, break-before-make timing (5ns typ), and SO-8 package compatibility with legacy DG419 layouts.
Technical Context
The MAX4659ESA+T implements an SPDT topology with one normally open (NO) and one normally closed (NC) channel controlled by a single TTL/CMOS-compatible IN pin. Its internal N-channel/P-channel MOSFET parallel structure enables symmetric conduction and rail-to-rail analog signal switching without body diode limitations.
It supports asymmetric dual-supply operation (e.g., V+ = +12V, V− = −5V) within a 40V total range and features active body-drive circuitry that eliminates the ~600mV voltage-drop constraint typical of standard analog switches - enabling full utilization of its ±20V supply rating under load.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance | 25Ω max at ±15V - ensures minimal signal attenuation and power loss in high-fidelity audio or precision instrumentation paths. |
| Continuous Current | ±75mA - supports direct switching of moderate-power loads like headset drivers or sensor excitation circuits without external buffering. |
| Off-Leakage Current | 1nA max at +25°C - preserves signal integrity in high-impedance sensor front-ends and low-level measurement systems. |
| Supply Range | ±4.5V to ±20V dual or +9V to +40V single - accommodates industrial, telecom, and audio rails without level-shifting circuitry. |
| Transition Time | 150ns typ - enables reliable switching of audio-band and low-speed digital control signals with minimal glitching. |
| Break-Before-Make Delay | 5ns typ - prevents momentary short-circuit between NC and NO paths during state transitions, critical for fault-tolerant routing. |
| Bandwidth | 225MHz - maintains signal fidelity up to UHF frequencies, supporting broadband test and communication applications. |
Pinout & Package
MAX4659ESA+T is housed in an 8-pin SO (SOIC-N) package per JEDEC MS-012, with gull-wing leads and 1.27mm pitch. The exposed paddle is absent - unlike the µMAX-EP variant - making thermal dissipation dependent solely on PCB copper area and solder joint quality.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 COM | Analog Switch Common | Shared terminal connected to either NC or NO based on logic state; must be routed with low-inductance trace for high-current paths. |
| 2 NC | Normally Closed Terminal | Connected to COM when IN = low; used for default-path routing or fail-safe signal continuity. |
| 3 GND | Ground Reference | System ground return for digital control and substrate bias; requires low-impedance connection to minimize noise coupling. |
| 4 V+ | Positive Supply Input | Bias source for P-channel MOSFETs and level-shifting circuitry; decoupling capacitor required near pin. |
| 5 N.C. | No Connection | Internally unconnected; must remain floating - no external tie or pull-up/down. |
| 6 IN | Digital Control Input | TTL/CMOS-compatible logic input (VIH ≥ 2.4V, VIL ≤ 0.8V); edge rate affects transition time but not functional reliability. |
| 7 V− | Negative Supply Input | Bias source for N-channel MOSFETs; establishes lower rail for bipolar analog signal swing. |
| 8 NO | Normally Open Terminal | Connected to COM when IN = high; used for active-path selection or signal multiplexing. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports analog inputs from V− to V+, eliminating clipping in ±15V op-amp interfaces and audio line drivers. |
| 25Ω max RON flatness | 1.5Ω max variation across full signal range at ±15V - ensures consistent gain and THD performance in variable-amplitude paths. |
| 1nA max off-leakage | Enables use in >1MΩ impedance nodes (e.g., piezoelectric sensors, pH electrodes) without measurable offset drift. |
| Pin compatibility with DG419 | Direct drop-in replacement for legacy designs using DG419, reducing redesign effort and qualification time. |
| No VL supply required | Eliminates need for separate logic-level supply - simplifies BOM and layout in mixed-voltage systems. |
Applications
| Audio Signal Routing | Test Equipment Multiplexing |
|---|---|
|
Use Scenario: Switching microphone preamp outputs between multiple ADC channels in a multichannel audio interface. IC Role / Device Role / Timing Role: SPDT analog switch selecting between primary and backup signal paths with sub-5ns break-before-make timing. Use Value: 25Ω RON and 0.005% THD preserve SNR >105dB; 75mA current rating handles peak transients without distortion. |
Use Scenario: Routing DUT signals to different measurement instruments (oscilloscope, spectrum analyzer, DMM) in automated test racks. IC Role / Device Role / Timing Role: High-isolation (−70dB @ 1MHz) SPDT switch enabling clean signal path separation during instrument reconfiguration. Use Value: 225MHz bandwidth supports RF test up to 100MHz; 6pF off-capacitance minimizes loading on high-Z probe inputs. |
| Redundant Power Path Control | xDSL Line Card Protection |
|
Use Scenario: Selecting between primary and backup DC power feeds in telecom shelf management units. IC Role / Device Role / Timing Role: High-current SPDT switch managing up to ±75mA continuous load current with fail-safe NC default path. Use Value: 150mA peak rating handles inrush surges; 1nA leakage prevents standby power drain in always-on systems. |
Use Scenario: Isolating DSL line drivers from damaged subscriber loops in central office line cards. IC Role / Device Role / Timing Role: Fast-switching SPDT protecting sensitive PHY ICs from overvoltage transients via automatic NC-to-NO rerouting. Use Value: ±20V supply range withstands lightning-induced surges; 5ns tBBM prevents cross-talk during protection activation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4660ESA+ | Higher 150mA continuous current rating and thermally enhanced SO-EP package; otherwise identical pinout and electrical specs. | Required where sustained >75mA load current or higher ambient temperature (>70°C) exists. | Select MAX4660ESA+ when thermal margin or peak current headroom is critical; MAX4659ESA+T remains optimal for cost-sensitive, <75mA applications. |
| DG419DN-E3 | 100Ω max RON, 30mA continuous current, same SO-8 footprint; lacks exposed paddle and high-current drive architecture. | Suitable only for low-current signal routing (<30mA), not relay replacement or power switching. | Choose DG419DN-E3 only for legacy compatibility where performance requirements are relaxed; MAX4659ESA+T delivers 2.5× lower RON and 2.5× higher current. |
Compared with MAX4660ESA+ and DG419DN-E3, MAX4659ESA+T uniquely balances 25Ω RON, 75mA current, and SO-8 cost-efficiency - making it the optimal choice for mid-range audio, test, and telecom signal routing where thermal enhancement is unnecessary.
Availability
MAX4659ESA+T is available at Aetrix Electronics and suitable for audio signal routing, test equipment multiplexing, and redundant power path control requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX4659ESA+T 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 semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.
The MAX4659ESA+T belongs to Maxim's high-current analog switch product line, engineered specifically to replace electromechanical relays in space-constrained, high-reliability systems demanding million-cycle endurance and microsecond switching.
FAQ
What supply voltage ranges does the MAX4659ESA+T support?
The MAX4659ESA+T operates from ±4.5V to ±20V in dual-supply mode or +9V to +40V in single-supply mode. Its 40V V+–V− differential limit allows asymmetric configurations (e.g., V+ = +12V, V− = −5V). All specifications in the datasheet are validated across this full range, including on-resistance, leakage, and switching speed - ensuring robust performance in industrial and telecom power domains.
Is the MAX4659ESA+T pin-compatible with the DG419?
Yes, the MAX4659ESA+T is pin-compatible with the DG419 in the 8-pin SO package. Pin assignments for COM, NC, NO, IN, V+, V−, GND, and N.C. match exactly. This enables drop-in replacement in existing DG419 designs, delivering immediate improvements in on-resistance (25Ω vs. 100Ω), current handling (75mA vs. 30mA), and off-isolation (−70dB vs. −60dB) without PCB modification.
What is the maximum continuous current rating for the MAX4659ESA+T?
The MAX4659ESA+T supports ±75mA continuous current through its COM, NC, and NO terminals. This rating applies across the full operating temperature range (−40°C to +85°C) and supply conditions (±4.5V to ±20V). Exceeding this value risks thermal overload and accelerated parametric shift; derating is recommended above +70°C ambient per the 5.88mW/°C SO package thermal resistance.
Does the MAX4659ESA+T require a separate logic supply (VL)?
No, the MAX4659ESA+T does not require a separate VL supply. Its digital input (IN) is fully TTL/CMOS compatible, accepting 0.8V (VIL) and 2.4V (VIH) thresholds directly from standard 3.3V or 5V logic families - regardless of analog supply voltages. This eliminates a dedicated logic rail, simplifying power architecture in mixed-voltage systems and reducing BOM count.
How does the MAX4659ESA+T achieve rail-to-rail signal switching?
The MAX4659ESA+T achieves true rail-to-rail analog switching via a parallel N-channel/P-channel MOSFET structure at each switch node, combined with active body-drive circuitry. Unlike conventional switches limited by body diode conduction, this architecture allows signals from V− to V+ without clipping or increased leakage - verified by ±15V analog range testing and <0.005% THD at full-scale audio amplitudes.
MAX4659ESA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 25Ohm
- Channel-to-Channel Matching (ΔRon):
- 400mOhm
- Voltage - Supply, Single (V+):
- 9V ~ 40V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- -
- -3db Bandwidth:
- 225MHz
- Charge Injection:
- 1.5pC
- Channel Capacitance (CS(off), CD(off)):
- 6pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -76dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX4659ESA+T FAQ
1.How can I place an order for MAX4659ESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4659ESA+T 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 MAX4659ESA+T reliable?
The price and inventory of MAX4659ESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4659ESA+T is usually 5 days.
3.What payment methods are accepted for MAX4659ESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4659ESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4659ESA+T?
MAX4659ESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4659ESA+T 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 MAX4659ESA+T?
For technical support, including MAX4659ESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4659ESA+T requirements.
6.How does Aetrix verify that MAX4659ESA+T is sourced from the original manufacturer or authorized distributors?
All MAX4659ESA+T 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 MAX4659ESA+T meets industry standards.
7.What is the process for return or replacement of MAX4659ESA+T?
All MAX4659ESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4659ESA+T, 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 MAX4659ESA+T part is unused and in its original packaging.
Return procedure for MAX4659ESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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