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Analog Devices Inc./Maxim Integrated MAX303CPE+
- Part No.:
- MAX303CPE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX303CPE+.pdf
- Description:
- IC SWITCH SPDT X 2 35OHM 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,686
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Product details
Overview
MAX303CPE+ from Maxim Integrated is a precision dual SPDT analog switch with two normally open (NO) and two normally closed (NC) poles, 35Ω max on-resistance, <2Ω channel-to-channel RON match, and 15pC guaranteed charge injection. It operates from ±4.5V to ±20V bipolar or +10V to +30V single supply and supports rail-to-rail analog signal switching in test equipment and military radios.
For engineers reviewing the MAX303CPE+ datasheet, MAX303CPE+ pinout, MAX303CPE+ application, or MAX303CPE+ equivalent, key selection criteria include guaranteed RON flatness (Δ3Ω max), sub-100ns turn-off time, low +85°C off-leakage (<6nA), and compatibility with TTL/CMOS logic inputs at VL = +5V.
Technical Context
The MAX303CPE+ implements a silicon-gate CMOS architecture optimized for precision analog routing, featuring matched transistor pairs that guarantee ≤2Ω RON mismatch between its two independent SPDT switches and ≤5Ω RON flatness across the full analog range (VANA = V− to V+). Its break-before-make timing is tightly controlled at 10–20ns to prevent signal shorting during state transitions.
It uses separate logic supply (VL) referenced to GND, enabling clean TTL/CMOS interface operation independent of analog supply rails (V+, V−), while internal substrate connection to V+ ensures stable latch-up immunity. Charge injection is minimized to 10–15pC via balanced switch design and layout symmetry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | SPDT dual - two independent switches, each with one NO and one NC path |
| Max On-Resistance | 35Ω - ensures minimal signal attenuation and gain error in precision instrumentation paths |
| RON Match Between Channels | ≤2Ω - enables accurate differential signal routing and ratiometric measurement integrity |
| Charge Injection | ≤15pC - limits voltage glitch on sampled-hold capacitors, critical for ADC front-end accuracy |
| Off-Leakage Current | <6nA at +85°C - preserves high-impedance node integrity in battery-operated or low-power systems |
| Turn-Off Time | <100ns - supports high-speed multiplexing up to ~5MHz without pulse distortion |
| Analog Signal Range | V− to V+ - supports true rail-to-rail AC/DC signal switching with ±20V supplies |
Pinout & Package
MAX303CPE+ is housed in a 16-pin plastic DIP (P16-1) package with 0.3-inch width and through-hole mounting. Pin 1 is top-left corner when notch faces up.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 | COM1, COM2 | Analog common terminals - bidirectional signal paths shared by NO/NC poles of each SPDT switch |
| 2–7 | N.C. | No internal connection - floating pins; no PCB trace required |
| 9, 16 | NC1, NC2 | Normally closed analog terminals - conduct to COMx when INx = logic low |
| 10, 15 | IN2, IN1 | CMOS/TTL-compatible digital control inputs - active-high logic controls switch state |
| 11 | V+ | Positive analog supply - also connected to substrate; must be powered before V− and VL |
| 12 | VL | Logic supply input - referenced to GND; +5V required for TTL compatibility |
| 13 | GND | Negative analog supply reference - tied to system ground; not isolated from V− |
| 14 | V− | Negative analog supply - establishes lower bound of rail-to-rail analog range |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog switching | Supports signals from V− to V+ (e.g., −15V to +15V) without clipping or distortion |
| Guaranteed RON flatness | Δ3Ω max over full analog range - maintains consistent gain and linearity across input voltage |
| Break-before-make timing | 10–20ns delay - prevents momentary short-circuit between NO and NC paths during transition |
| Low power consumption | 35µW typical - enables use in portable and thermally constrained systems |
| High off-isolation | 72dB at 1MHz - suppresses crosstalk between inactive channels in dense multiplexed designs |
Applications
| Sample-and-Hold Circuits | Test Equipment |
|---|---|
Use Scenario: Precision sampling of sensor outputs prior to ADC conversion in data acquisition systems. IC Role / Device Role / Timing Role: Dual SPDT switch routes analog input to hold capacitor while isolating it from source impedance variations. Use Value: ≤15pC charge injection minimizes hold-step error; ≤2Ω RON match ensures channel-to-channel tracking accuracy. |
Use Scenario: Automated signal routing in benchtop multimeters and oscilloscope front-ends. IC Role / Device Role / Timing Role: High-speed analog multiplexer selecting between multiple calibrated references or input channels. Use Value: <100ns turn-off time enables ≥5MHz switching rate; 72dB off-isolation prevents measurement crosstalk. |
| Military Radios | Battery-Operated Systems |
Use Scenario: Antenna switching and IF signal path selection in secure HF/VHF transceivers. IC Role / Device Role / Timing Role: SPDT switch toggles between transmit/receive paths or selects filter banks under microcontroller control. Use Value: ±20V supply capability supports wide dynamic range RF stages; −55°C to +125°C variants available for extended environments. |
Use Scenario: Low-power sensor node signal conditioning in IoT edge devices. IC Role / Device Role / Timing Role: Analog front-end switch enabling shared ADC resources across multiple sensors. Use Value: 35µW quiescent power extends battery life; <6nA +85°C leakage preserves signal integrity during long sleep cycles. |
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 |
|---|---|---|---|
| ADG403BRZ | Higher RON (60Ω typ), no guaranteed RON match, 25pC charge injection | Lacks precision matching and low-charge specs needed for metrology-grade sample-and-hold | Acceptable for general-purpose multiplexing where matching and glitch performance are non-critical |
| TS5A3157DCKR | Single-supply only (+1.65V to +5.5V), 10Ω RON, but only 1 SPDT switch per package | Not suitable for bipolar rail-to-rail operation or dual-switch synchronous control | Preferred for low-voltage, space-constrained consumer applications - requires two units for dual SPDT function |
Compared with ADG403BRZ and TS5A3157DCKR, the MAX303CPE+ uniquely delivers guaranteed RON matching, sub-15pC charge injection, and true bipolar ±20V operation in a single 16-pin DIP - making it irreplaceable for high-accuracy, wide-dynamic-range analog routing where channel correlation and signal fidelity are mandatory.
Availability
MAX303CPE+ is available at Aetrix Electronics and suitable for test equipment, military radios, sample-and-hold circuits, and battery-operated systems requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for MAX303CPE+ 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 high-reliability ICs for demanding industrial, automotive, and defense applications.
The MAX303CPE+ belongs to Maxim's precision analog switch family, engineered specifically for high-fidelity signal routing in metrology, military comms, and automated test systems where RON matching, low charge injection, and rail-to-rail operation are essential.
FAQ
What is the maximum allowable supply voltage for MAX303CPE+?
The MAX303CPE+ has an absolute maximum rating of 44V between V+ and V−. It operates reliably across bipolar supplies from ±4.5V to ±20V or single supplies from +10V to +30V. Exceeding ±20V or +30V risks violating the 44V breakdown limit and may cause permanent damage. Always observe proper power sequencing: V+ first, then VL, V−, and logic inputs.
Does MAX303CPE+ support TTL-level logic inputs?
Yes, the MAX303CPE+ supports TTL-level logic inputs when VL is connected to +5V. Under this condition, VINH ≥ +2.4V and VINL ≤ +0.8V meet standard TTL thresholds. If VL is tied to V+ or another voltage, the device operates with CMOS-level inputs instead. Input current remains below ±1µA across temperature, minimizing loading on driving logic.
What is the significance of the "C" grade in MAX303CPE+?
The "C" in MAX303CPE+ denotes the commercial temperature grade: 0°C to +70°C operating range. This distinguishes it from "E" (−40°C to +85°C) and "M" (−55°C to +125°C) variants. All electrical specifications - including RON, leakage, and switching times - are guaranteed across this 0°C to +70°C range per the datasheet's "C" column test conditions.
Can MAX303CPE+ be used with a single +12V supply?
Yes, the MAX303CPE+ supports single-supply operation from +10V to +30V. With +12V applied to V+, GND connected to V−, and VL = +5V, it delivers rail-to-rail analog switching from 0V to +12V. On-resistance remains flat (Δ5Ω max), and leakage stays below 0.5nA at +25°C - confirmed in the Electrical Characteristics table under single-supply conditions.
How does MAX303CPE+ achieve guaranteed RON matching between channels?
The MAX303CPE+ achieves ≤2Ω RON matching via matched transistor geometry and silicon-gate process optimization. This specification is tested and guaranteed at +25°C and across the full temperature range (0°C to +70°C for the "C" grade). Matching holds only when both switches operate under identical supply and signal conditions - critical for differential signal integrity in instrumentation designs.
MAX303CPE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- 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:
- Through Hole
- Supplier Device Package:
- 16-PDIP
MAX303CPE+ FAQ
1.How can I place an order for MAX303CPE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX303CPE+ 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 MAX303CPE+ reliable?
The price and inventory of MAX303CPE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX303CPE+ is usually 5 days.
3.What payment methods are accepted for MAX303CPE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX303CPE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX303CPE+?
MAX303CPE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX303CPE+ 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 MAX303CPE+?
For technical support, including MAX303CPE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX303CPE+ requirements.
6.How does Aetrix verify that MAX303CPE+ is sourced from the original manufacturer or authorized distributors?
All MAX303CPE+ 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 MAX303CPE+ meets industry standards.
7.What is the process for return or replacement of MAX303CPE+?
All MAX303CPE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX303CPE+, 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 MAX303CPE+ part is unused and in its original packaging.
Return procedure for MAX303CPE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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