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Analog Devices Inc./Maxim Integrated MAX4603CWE
- Part No.:
- MAX4603CWE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX4603CWE.pdf
- Description:
- IC SW SPST-NO/NCX4 2.5OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,429
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Product details
Overview
MAX4603CWE from Maxim Integrated is a quad SPST analog switch IC with two normally closed (NC) and two normally open (NO) channels, 4Ω max on-resistance at +25°C, ±15V dual-supply or +12V single-supply operation, and rail-to-rail analog signal handling up to ±10V - used in PBX audio routing and automatic test equipment for low-distortion signal path control.
For engineers reviewing the MAX4603CWE datasheet, MAX4603CWE pinout, MAX4603CWE application, or MAX4603CWE equivalent, this page delivers verified electrical specs, terminal roles, real-world use cases, and validated alternative parts for reed relay replacement, communication system design, and high-reliability analog switching.
Technical Context
The MAX4603CWE implements four independent CMOS-based SPST switches in one package, with dedicated IN/COM/NO/NC terminals per channel and separate logic supply (VL) for TTL/CMOS-compatible control. Its architecture guarantees matched on-resistance (≤0.5Ω) and flat on-resistance (≤0.4Ω) over the full signal range, enabling precise gain-matching in multi-channel signal paths.
It supports dual-supply operation (±4.5V to ±20V) or single-supply operation (+4.5V to +36V), with logic thresholds fixed at 0.8V (low) and 2.4V (high), ensuring interoperability with standard 5V logic without level-shifting. All analog terminals tolerate rail-to-rail signals and include ESD protection >2000V per Method 3015.7.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 4Ω max at TA = +25°C, V+ = +12V - ensures minimal voltage drop and signal attenuation in precision analog paths |
| RON Match Between Channels | 0.5Ω max - enables accurate channel-to-channel signal balancing in differential or multi-path systems |
| RON Flatness | 0.4Ω max over ±10V signal range - maintains consistent gain and linearity across full analog input swing |
| Off-Leakage Current | 0.5nA max at TA = +85°C - preserves high-impedance node integrity in sensor front-ends and sample-hold circuits |
| Supply Range | +4.5V to +36V (single) or ±4.5V to ±20V (dual) - supports industrial, telecom, and avionics power architectures |
| Logic Compatibility | TTL/CMOS thresholds (0.8V/2.4V) - allows direct interface with microcontrollers and FPGAs without external biasing |
| Turn-On/Off Time | 160ns / 170ns typical at VCOM = 10V - suitable for medium-speed multiplexing in data acquisition and test instrumentation |
Pinout & Package
MAX4603CWE is housed in a 16-pin Wide SO (SOIC-W) package with 0.3-inch body width and standard gull-wing lead form factor, compatible with automated SMT assembly and IPC-7351B land patterns.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN4 (Pins 1, 16, 9, 8) | Digital control inputs | Active-high logic signals determining NO/NC state per channel; referenced to VL |
| COM1–COM4 (Pins 2, 15, 10, 7) | Analog common terminals | Signal input/output nodes shared between NO and NC paths per switch |
| NC1, NC2, NC3, NC4 (Pins 3, 14, 11, 6) | Normally closed analog outputs | Connected to COM when IN = 0; MAX4603 uses NC1/NC2 and NO3/NO4 |
| NO1, NO2, NO3, NO4 (Pins -, -, 14, 6) | Normally open analog outputs | Connected to COM when IN = 1; MAX4603 uses NO3/NO4 only (Pins 14 & 6) |
| V+ (Pin 13) | Positive analog supply | Bias for internal switch transistors; must be ≥ V− + 4.5V in dual-supply mode |
| V− (Pin 4) | Negative analog supply | Ground reference for dual supplies; tied to GND in single-supply configurations |
| VL (Pin 12) | Logic supply input | Provides reference for digital input thresholds; typically +5V, independent of V+/V− |
| GND (Pin 5) | Ground reference | Common return for logic circuitry and substrate; separate from analog ground in mixed-signal layouts |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports analog signals from V− to V+ (e.g., ±10V), eliminating clipping in wide-dynamic-range audio and sensor interfaces |
| Guaranteed RON match | ≤0.5Ω difference between any two channels - critical for matched gain in stereo audio routing or phased-array signal conditioning |
| Low charge injection | 20pC typical - minimizes voltage glitches at COM during switching, essential for precision sample-and-hold and DAC output buffering |
| ESD protection | >2000V per Method 3015.7 - enables robust handling in manufacturing and field-deployed test equipment |
| Single/dual supply flexibility | Operates from +4.5V to +36V or ±4.5V to ±20V - simplifies power architecture in both industrial PLCs and telecom line cards |
Applications
| Reed Relay Replacement | Audio-Signal Routing |
|---|---|
Use Scenario: Replacing electromechanical relays in automated test equipment where cycle life, speed, and size are critical. IC Role / Device Role / Timing Role: Quad SPST analog switch providing solid-state, bounce-free contact closure with sub-200ns switching. Use Value: Eliminates mechanical wear, reduces PCB area by >70%, and enables 10⁶+ switching cycles versus 10⁵ for reed relays. |
Use Scenario: Dynamic routing of line-level audio signals in PBX and PABX telephone systems. IC Role / Device Role / Timing Role: Low-distortion analog switch selecting between multiple microphone or speaker paths under microcontroller control. Use Value: 2.5Ω on-resistance and <0.5Ω matching preserve signal fidelity and channel balance across stereo or multi-zone audio distribution. |
| Communication Systems | Avionics Signal Conditioning |
Use Scenario: Signal path selection in RF front-end test fixtures and baseband modulation/demodulation boards. IC Role / Device Role / Timing Role: High-isolation (−56dB off-isolation) analog switch isolating transmit/receive paths during TDD operation. Use Value: −60dB crosstalk at 1MHz prevents inter-channel interference in multi-carrier communication analyzers. |
Use Scenario: Redundant sensor signal switching in flight control interface units requiring fault-tolerant analog path management. IC Role / Device Role / Timing Role: Dual-supply (±15V) analog switch routing analog outputs from inertial measurement units (IMUs) to processing channels. Use Value: Guaranteed operation from −40°C to +85°C and <0.5nA leakage at +85°C ensure reliability in unpressurized avionics bays. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG465BRUZ | Single-supply only (+3V to +16.5V); 4.5Ω RON; no dual-supply support | Suitable for battery-powered portable test gear but not ±15V avionics or telecom line cards | Select when only single-supply operation is needed and lower cost is prioritized over dual-rail flexibility |
| TS5A23157DGSR | Lower voltage range (+1.65V to +5.5V); 0.9Ω RON; no NC/NO mix - all NO configuration | Optimized for USB/audio codec switching in consumer electronics, not industrial or telecom analog routing | Choose for low-voltage, high-speed (<50ns) applications where rail-to-rail ±15V operation is unnecessary |
Compared with ADG465BRUZ and TS5A23157DGSR, the MAX4603CWE uniquely combines dual-supply capability, NC/NO channel pairing, and guaranteed RON matching - making it the only option among the three qualified for reed-relay-replacement in wide-temperature, high-voltage test equipment.
Availability
MAX4603CWE is available at Aetrix Electronics and suitable for PBX audio routing, automatic test equipment, and avionics signal conditioning requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX4603CWE 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 computing markets.
The MAX460x family was designed specifically for high-reliability, low-distortion analog switching in environments where mechanical relays fail - targeting automatic test equipment, telecom infrastructure, and aerospace signal routing.
FAQ
What is the operating temperature range for the MAX4603CWE?
The MAX4603CWE is specified for commercial-grade operation from 0°C to +70°C. This range is confirmed in the Ordering Information table and applies to all C-suffix variants including MAX4603CWE. It is not rated for extended industrial temperatures (−40°C to +85°C), which require the E-suffix version (e.g., MAX4603EWE). Thermal derating curves in the datasheet show RON stability within spec across this full range.
Does the MAX4603CWE support true rail-to-rail analog signal switching?
Yes, the MAX4603CWE supports rail-to-rail analog signal handling - meaning signals from V− to V+ (e.g., −15V to +15V in dual-supply mode or 0V to +12V in single-supply mode) can pass through the switch without clipping. This is explicitly stated in the General Description and verified by the Input Voltage Range specification (VCOM_, VNO_, VNC_ = V− to V+) across all operating conditions.
How many normally closed and normally open switches does the MAX4603CWE contain?
The MAX4603CWE contains exactly two normally closed (NC) switches and two normally open (NO) switches - a hybrid configuration distinct from the all-NC MAX4601 and all-NO MAX4602. This is defined in the General Description and confirmed by the MAX4603 functional diagram showing IN1/IN4 controlling NC paths and IN2/IN3 controlling NO paths.
Can the MAX4603CWE operate from a single +5V supply?
No, the MAX4603CWE cannot operate from a single +5V supply. Its absolute minimum single-supply voltage is +4.5V, but the Electrical Characteristics tables specify performance only at +12V (single) or ±15V (dual). At +5V, RON increases significantly (>10Ω), logic thresholds become marginal, and key parameters like leakage and flatness are not characterized or guaranteed.
What is the maximum continuous current rating per switch terminal of the MAX4603CWE?
The MAX4603CWE has a continuous current rating of ±200mA per COM_, NO_, or NC_ terminal, as specified in the Absolute Maximum Ratings table. This rating applies across the full operating temperature range and is independent of supply voltage. Exceeding this value risks thermal damage or parametric shift, even with short-duration pulses.
MAX4603CWE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO/NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 2.5Ohm
- Channel-to-Channel Matching (ΔRon):
- 100mOhm
- Voltage - Supply, Single (V+):
- 4.5V ~ 36V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 250ns, 350ns
- -3db Bandwidth:
- -
- Charge Injection:
- 120pC
- Channel Capacitance (CS(off), CD(off)):
- 55pF, 55pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -59dB @ 1MHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX4603CWE FAQ
1.How can I place an order for MAX4603CWE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4603CWE 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 MAX4603CWE reliable?
The price and inventory of MAX4603CWE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4603CWE is usually 5 days.
3.What payment methods are accepted for MAX4603CWE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4603CWE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4603CWE?
MAX4603CWE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4603CWE 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 MAX4603CWE?
For technical support, including MAX4603CWE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4603CWE requirements.
6.How does Aetrix verify that MAX4603CWE is sourced from the original manufacturer or authorized distributors?
All MAX4603CWE 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 MAX4603CWE meets industry standards.
7.What is the process for return or replacement of MAX4603CWE?
All MAX4603CWE units undergo pre-shipment inspection (PSI). If there is an issue with MAX4603CWE, 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 MAX4603CWE part is unused and in its original packaging.
Return procedure for MAX4603CWE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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