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Analog Devices Inc./Maxim Integrated MAX303C/D
- Part No.:
- MAX303C/D
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- Die
- Datasheet:
-
MAX303C/D.pdf
- Description:
- IC SWITCH SPDT X 2 35OHM DIE
- Quantity:
- Payment:
- Shipping:
Inventory:2,803
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Product details
Overview
MAX303C/D from Maxim Integrated is a precision dual SPDT analog switch with two normally open (NO) and two normally closed (NC) poles, designed for high-accuracy signal routing in bipolar or single-supply systems. It delivers <22Ω typical on-resistance, <2Ω matched RON between channels, <15pC charge injection, <6nA off-leakage at +85°C, and rail-to-rail analog signal handling up to ±20V supplies - used in military radios and guidance control systems.
For engineers reviewing the MAX303C/D datasheet, MAX303C/D pinout, MAX303C/D application, or MAX303C/D equivalent, this page provides verified electrical specs, truth-table–aligned terminal roles, supply-flexible operation details (+10V to +30V single or ±4.5V to ±20V dual), and real-world design constraints including break-before-make timing and off-isolation performance.
Technical Context
The MAX303C/D implements a silicon-gate CMOS architecture enabling precise analog switching with guaranteed flat on-resistance (ΔRON ≤ 5Ω over full signal range) and low temperature coefficient (0.5%/°C typ). Its dual SPDT topology supports independent channel control via TTL/CMOS-compatible logic inputs (IN1/IN2), with VL referenced to +5V for consistent logic thresholds.
It features internal substrate isolation via V+ connection, supports rail-to-rail analog signals from V− to V+, and includes built-in overvoltage clamping diodes - requiring strict power sequencing (V+ first, then VL, V−, inputs) to avoid latch-up. Break-before-make delay is guaranteed at 10–20ns to prevent transient shorting during state transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Dual SPDT (2× NO + 2× NC poles) |
| On-Resistance (RON) | <22Ω typical, ≤35Ω max - ensures minimal signal attenuation and gain error in precision instrumentation paths |
| RON Match Between Channels | <2Ω max - enables accurate differential signal switching without mismatch-induced offset |
| Charge Injection | <15pC - critical for sample-and-hold stability and low glitch energy in data acquisition front-ends |
| Off-Leakage Current | <6nA at +85°C - preserves high-impedance node integrity in battery-operated or low-power sensor interfaces |
| Supply Range | +10V to +30V single or ±4.5V to ±20V dual - supports wide dynamic range analog signal routing without level-shifting |
| Switching Speed | tON <150ns, tOFF <100ns - suitable for multiplexing >5MHz signals in test equipment and comms systems |
Pinout & Package
Dice form factor - no molded package; bare die intended for hybrid or custom module integration. Requires wire bonding to carrier with defined pad layout per LCC or DIP footprint mapping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1, IN2 | Digital Logic Inputs | CMOS/TTL-compatible control lines; active-high logic selects NO/NC path per pole |
| COM1, COM2 | Analog Common Terminals | Signal input/output nodes - each connects to one NO and one NC pole |
| NO1, NO2, NC1, NC2 | Analog Switch Terminals | Normally open/normally closed outputs - routed to COMx based on INx state |
| V+, V− | Analog Supply Rails | Define full analog signal range (V− to V+); V+ also ties to substrate for latch-up immunity |
| VL | Logic Supply Reference | +5V reference for input threshold stability; deviation shifts logic compatibility |
| GND | Ground Reference | Return path for logic and negative supply; not isolated from V− in standard configuration |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports signals from V− to V+ (±20V max) without clipping or distortion - eliminates external level shifters |
| Guaranteed break-before-make timing | 10–20ns delay prevents momentary shorting between NC and NO paths - essential for fault-tolerant signal routing |
| Low and matched on-resistance | <22Ω typical with <2Ω channel-to-channel match - maintains amplitude accuracy across dual-channel applications like differential ADC drivers |
| Ultra-low charge injection | <15pC - minimizes voltage step errors at sampling nodes, enabling sub-12-bit settling in S/H circuits |
| High off-isolation | 72dB at 1MHz - suppresses crosstalk between inactive channels in dense multiplexer layouts |
Applications
| Military Radio Front-End | Guidance System Signal Routing |
|---|---|
Use Scenario: Selecting between antenna receive paths and calibration loops under harsh environmental conditions. IC Role / Device Role / Timing Role: Dual SPDT analog switch managing RF front-end signal path selection with simultaneous isolation of unused branches. Use Value: Guaranteed <6nA leakage at +85°C and ±20V supply tolerance ensure reliable path integrity across extended temperature ranges. |
Use Scenario: Multiplexing inertial sensor outputs (gyro, accelerometer) into shared ADC channels while maintaining signal fidelity. IC Role / Device Role / Timing Role: Precision analog switch providing low-offset, low-glitch signal routing with matched RON for differential pair consistency. Use Value: <2Ω RON match and <15pC charge injection preserve phase coherence and minimize measurement drift. |
| Heads-Up Display (HUD) Video Path | Battery-Operated Test Equipment |
Use Scenario: Switching between primary video source and diagnostic overlay generator in avionics HUD systems. IC Role / Device Role / Timing Role: High-speed SPDT switch enabling seamless video path reconfiguration without visible artifacts. Use Value: <150ns turn-on time and rail-to-rail capability support composite video swing (±1V) without clipping or delay skew. |
Use Scenario: Configuring multi-range voltage/current measurement paths in handheld multimeters and portable analyzers. IC Role / Device Role / Timing Role: Low-power analog switch selecting gain-setting resistors and input attenuators in auto-ranging architectures. Use Value: 35µW typical power consumption and <250pA leakage at +25°C extend battery life while preserving high-impedance input accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPDT analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX303CSE | Same die, 16-pin narrow SOIC package with defined leadframe and thermal characteristics | Requires PCB footprint and reflow process; not suitable for hybrid die bonding | Select when standardized surface-mount assembly and traceable packaging are required |
| ADG408BRUZ | Single 8-channel mux (not dual SPDT); higher RON (45Ω typ), no guaranteed RON match or charge injection spec | Used in general-purpose multiplexing where channel count > function fidelity | Choose only if pin count and package compatibility outweigh precision matching and low-charge requirements |
Compared with MAX303CSE, the MAX303C/D offers identical electrical performance but requires custom die attach and wire bonding; versus ADG408BRUZ, it provides superior channel matching, lower charge injection, and true SPDT topology - making it irreplaceable in precision dual-path routing where signal integrity is non-negotiable.
Availability
MAX303C/D is available at Aetrix Electronics and suitable for military radio front-ends, guidance system signal routing, and battery-operated test equipment requiring stable component supply across extended qualification cycles and long-lifecycle programs.
Supply support for MAX303C/D 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 high-performance analog and mixed-signal ICs for demanding industrial, automotive, and aerospace applications.
The MAX301/MAX303/MAX305 family was engineered specifically for precision analog signal routing in environments requiring guaranteed matching, ultra-low leakage, and robust supply flexibility - targeting defense electronics and high-reliability instrumentation.
FAQ
What is the operating temperature range for MAX303C/D?
The MAX303C/D is specified for 0°C to +70°C ambient operation. As a dice product, it is tested at +25°C only per datasheet note; full temperature characterization applies only to packaged variants like MAX303CSE or MAX303CPE. Thermal management must be implemented externally in the host assembly to maintain junction temperature within limits.
Does MAX303C/D support single-supply operation?
Yes, the MAX303C/D supports single-supply operation from +10V to +30V. In this mode, V− is tied to ground (or a low reference), V+ sets the upper rail, and analog signals can swing from GND to V+. The device retains TTL/CMOS logic compatibility when VL = +5V, and rail-to-rail signal handling remains fully functional.
What is the pinout configuration for MAX303C/D dice?
The MAX303C/D dice follows the 20-pad LCC pinout mapping: COM1/COM2/COM3/COM4 on pads 1,3,6,8; IN1/IN2 on pads 15/19; NO1/NO2/NC1/NC2 on pads 4,5,7,20; V+/V−/VL/GND on pads 11,14,12,13 respectively. No internal connections exist on N.C. pads (2,9,10,16,17,18).
How does charge injection affect sample-and-hold circuits using MAX303C/D?
With guaranteed charge injection <15pC, the MAX303C/D introduces minimal voltage step error at the hold capacitor node. For a 10nF capacitor, this yields <1.5mV glitch - acceptable for 12-bit systems. Layout best practices (minimizing stray capacitance, symmetric routing) further reduce effective error in precision S/H implementations.
Is MAX303C/D pin-compatible with other MAX30x family dice?
No - MAX303C/D has unique SPDT functionality and terminal assignment (dual NO/NC per COM), unlike MAX301C/D (SPST) or MAX305C/D (DPST). While all share the same die pad frame and supply interface, signal pin functions differ fundamentally; direct substitution would cause incorrect switching behavior and potential signal shorts.
MAX303C/D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 35Ohm
- Channel-to-Channel Matching (ΔRon):
- 500mOhm
- Voltage - Supply, Single (V+):
- 10V ~ 30V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 150ns, 100ns
- -3db Bandwidth:
- -
- Charge Injection:
- 10pC
- Channel Capacitance (CS(off), CD(off)):
- 12pF, 12pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -90dB @ 1MHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Die
MAX303C/D FAQ
1.How can I place an order for MAX303C/D through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX303C/D 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 MAX303C/D reliable?
The price and inventory of MAX303C/D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX303C/D is usually 5 days.
3.What payment methods are accepted for MAX303C/D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX303C/D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX303C/D?
MAX303C/D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX303C/D 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 MAX303C/D?
For technical support, including MAX303C/D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX303C/D requirements.
6.How does Aetrix verify that MAX303C/D is sourced from the original manufacturer or authorized distributors?
All MAX303C/D 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 MAX303C/D meets industry standards.
7.What is the process for return or replacement of MAX303C/D?
All MAX303C/D units undergo pre-shipment inspection (PSI). If there is an issue with MAX303C/D, 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 MAX303C/D part is unused and in its original packaging.
Return procedure for MAX303C/D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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