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Analog Devices Inc./Maxim Integrated MAX309CPE
- Part No.:
- MAX309CPE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX309CPE.pdf
- Description:
- IC SWITCH SP4T X 2 100OHM 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,350
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Product details
Overview
MAX309CPE from Maxim Integrated is a precision differential 2-of-4 CMOS analog multiplexer designed for high-fidelity signal routing in demanding analog systems. It delivers <100Ω on-resistance, <5Ω channel-to-channel matching, <10pC charge injection, and supports ±5V to ±20V bipolar or +5V to +30V single-supply operation - enabling accurate signal switching in military radios and guidance systems.
For engineers reviewing the MAX309CPE datasheet, MAX309CPE pinout, MAX309CPE application, or MAX309CPE equivalent, key selection criteria include guaranteed on-resistance flatness (≤7Ω), NO-off leakage <5nA at +85°C, rail-to-rail analog signal handling up to ±20V, and TTL/CMOS logic compatibility without external level shifting.
Technical Context
The MAX309CPE implements a CMOS decode logic architecture with dual 4-channel differential switching paths (COMA/NO1A–NO4A and COMB/NO1B–NO4B), controlled by A1/A0 address inputs and EN enable. Its silicon-gate process ensures low charge injection (<10pC) and ESD protection >2000V, critical for sample-and-hold integrity and long-term reliability in automated test equipment.
It operates across 0°C to +70°C with guaranteed performance under ±15V dual supplies (V+ = +15V, V− = −15V), delivering 250ns typical transition time, 75ns enable turn-on time, and −75dB off isolation - all while maintaining <20nA COM-off leakage at +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance | <100Ω max - ensures minimal signal attenuation and gain error in precision instrumentation paths |
| On-Resistance Matching | <5Ω max between channels - enables accurate ratiometric measurements and matched gain in differential signal chains |
| Charge Injection | <10pC - reduces voltage glitch and settling error in sample-and-hold circuits using 1nF hold capacitors |
| NO-Off Leakage | <5nA at +85°C - preserves DC accuracy in high-impedance sensor front-ends and battery-operated systems |
| Analog Signal Range | ±20V max - supports full rail-to-rail operation with ±20V bipolar supplies, covering industrial and military voltage ranges |
| Supply Range | +5V to +30V (single) or ±5V to ±20V (bipolar) - allows flexible power architecture integration without external regulators |
| Transition Time | <250ns - enables fast channel switching in automatic test equipment scanning at ≥1MHz rates |
Pinout & Package
MAX309CPE is supplied in a 16-pin plastic DIP package (0.300" wide), with through-hole mounting and industry-standard footprint compatible with legacy DG409 sockets.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | A0, A1 | Binary address inputs selecting active differential pair (00→CH1, 01→CH2, 10→CH3, 11→CH4) |
| 2 | EN | Active-high enable controlling conduction of both COMA/COMB paths simultaneously |
| 3 | V− | Negative supply rail - must be connected for bipolar operation; tied to GND for single-supply mode |
| 4–7 | NO1A–NO4A | First set of bidirectional analog inputs for differential channel A (paired with COMA) |
| 8, 9 | COMA, COMB | Differential common outputs - COMA routes NO1A–NO4A; COMB routes NO1B–NO4B |
| 10–13 | NO4B–NO1B | Second set of bidirectional analog inputs for differential channel B (paired with COMB) |
| 14 | V+ | Positive supply rail - supports up to +30V in single-supply or +20V in bipolar configurations |
| 15 | GND | Logic ground reference - decoupled separately from analog return paths to minimize noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports analog signals from V− to V+ without clipping - essential for ±15V op-amp interfaces and military comms systems |
| Guaranteed on-resistance flatness | ≤7Ω variation over full ±10V signal range - maintains consistent gain and linearity across input voltage swing |
| TTL/CMOS logic compatibility | Accepts 0.8V/2.4V thresholds directly - eliminates level-shifter ICs and reduces BOM count in mixed-signal controllers |
| Plug-in upgrade for DG409 | Pin- and function-compatible replacement for DG409 - enables drop-in performance enhancement in existing designs |
| Low power consumption | <300µW quiescent - extends battery life in portable PBX and heads-up display units |
Applications
| Military Radios | Guidance and Control Systems |
|---|---|
Use Scenario: Channel selection in secure HF/VHF transceiver front-ends requiring low distortion and high off-isolation. IC Role / Device Role / Timing Role: Differential analog mux routing antenna receive paths and IF signal chains with matched impedance and minimal crosstalk. Use Value: −75dB off isolation and <5nA leakage at +85°C preserve signal integrity and dynamic range in harsh thermal environments. | Use Scenario: Multiplexing inertial sensor outputs (gyros, accelerometers) into ADCs within flight control computers. IC Role / Device Role / Timing Role: Precision signal switch enabling sequential sampling of multiple differential sensor pairs with sub-10pC charge injection. Use Value: <10pC charge injection prevents hold capacitor voltage step errors, ensuring ≤0.01% measurement accuracy in closed-loop stabilization. |
| Automatic Test Equipment | Sample-and-Hold Circuits |
Use Scenario: High-speed signal routing in PXI-based ATE platforms performing parametric testing of analog ICs. IC Role / Device Role / Timing Role: Fast-switching multiplexer selecting DUT stimulus/response paths with 250ns transition time and 75ns enable latency. Use Value: 250ns transition time supports ≥1MHz channel scan rates, reducing test cycle time without sacrificing measurement fidelity. | Use Scenario: Input selection in precision data acquisition systems using 16-bit SAR ADCs with external hold capacitors. IC Role / Device Role / Timing Role: Low-leakage, low-charge-injection switch isolating sampled voltage onto 1nF hold capacitor during acquisition phase. Use Value: <5nA NO-off leakage at +85°C limits voltage droop to <1mV/s, enabling ≥10ms hold times with 16-bit resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX309EPE | Same functionality and pinout; extended temperature range (−40°C to +85°C) vs. MAX309CPE's 0°C to +70°C | Suitable for industrial outdoor deployments where ambient temperature exceeds 70°C | Select MAX309EPE when operating outside commercial temperature grade or requiring extended lifecycle support |
| ADG409BNZ | Higher on-resistance (100Ω typ vs. 75Ω typ), no guaranteed on-resistance matching, and lower ESD rating (1500V vs. >2000V) | Acceptable for non-critical audio routing but not for precision metrology or military-grade systems | Choose ADG409BNZ only if cost sensitivity outweighs need for guaranteed matching and robust ESD immunity |
Compared with MAX309CPE, MAX309EPE offers identical electrical performance with broader thermal qualification, while ADG409BNZ trades guaranteed matching and ESD robustness for lower unit cost - making MAX309CPE optimal for applications demanding traceable channel uniformity and field reliability.
Availability
MAX309CPE is available at Aetrix Electronics and suitable for military radios, guidance and control systems, automatic test equipment, sample-and-hold circuits, and battery-operated systems requiring stable component supply across commercial temperature grades.
Supply support for MAX309CPE 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 precision, reliability, and energy efficiency in mission-critical systems.
The MAX308/MAX309 product line targets high-fidelity analog signal routing in defense, aerospace, and industrial test equipment - emphasizing low distortion, guaranteed matching, and robust operation across extreme supply and temperature conditions.
FAQ
What is the maximum analog signal voltage range supported by the MAX309CPE?
The MAX309CPE supports an analog signal range of ±20V when operated with bipolar ±20V supplies, or 0V to +30V with single-ended +30V supply. This rail-to-rail capability allows direct interfacing with ±15V op-amps and high-voltage sensor outputs without external level shifting. The device maintains specified on-resistance flatness and leakage performance across this full range, as confirmed in the Electrical Characteristics tables for dual-supply operation at ±15V and ±20V conditions.
Does the MAX309CPE require external level shifters for TTL/CMOS logic inputs?
No, the MAX309CPE does not require external level shifters. Its digital inputs are fully TTL/CMOS-compatible with guaranteed recognition of logic-low ≤0.8V and logic-high ≥2.4V across the full supply range. This is explicitly verified in the Electrical Characteristics table under "Input Current with Input Voltage Low/High" and "Logic Input Thresholds", enabling direct connection to microcontrollers, FPGAs, and ASICs operating at 3.3V or 5V logic levels without additional components.
How does the MAX309CPE differ from the MAX308CPE in terms of architecture and use cases?
The MAX309CPE is a differential 2-of-4 multiplexer with two independent COM/NO banks (COMA/NO1A–NO4A and COMB/NO1B–NO4B), whereas the MAX308CPE is a single-ended 1-of-8 device with one COM and eight NO terminals. This makes MAX309CPE ideal for differential signal routing (e.g., balanced audio, isolated sensor pairs), while MAX308CPE suits single-ended channel expansion. Their pinouts, truth tables, and functional diagrams are mutually incompatible - they are not pin- or function-replaceable.
What is the guaranteed on-resistance matching specification for the MAX309CPE, and why does it matter?
The MAX309CPE guarantees on-resistance matching of <5Ω between any two channels, measured at TA = TMIN to TMAX. This tight matching ensures consistent gain and minimal offset error when used in ratiometric measurements, differential amplification, or calibration circuits where channel-to-channel consistency directly impacts system accuracy. Unlike typical muxes specifying only typical matching, this limit is production-tested and guaranteed - critical for MIL-STD-883-compliant test equipment and avionics signal conditioning.
Can the MAX309CPE operate from a single +12V supply, and what performance changes occur?
Yes, the MAX309CPE operates from a single +12V supply (V+ = +12V, V− = GND). In this configuration, its analog signal range reduces to 0V to +12V, on-resistance increases slightly (120Ω max vs. 100Ω max at ±15V), and switching times lengthen (e.g., transition time rises to 300ns typ). These trade-offs are documented in the "Electrical Characteristics-Single Supply" table and Typical Operating Characteristics curves (TOC-03/TOC-04), confirming full functionality but with quantified derating versus bipolar operation.
MAX309CPE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Switch Circuit:
- SP4T
- Multiplexer/Demultiplexer Circuit:
- 4:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 100Ohm
- Channel-to-Channel Matching (ΔRon):
- 1.5Ohm
- Voltage - Supply, Single (V+):
- 5V ~ 30V
- Voltage - Supply, Dual (V±):
- ±5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 150ns, 150ns
- -3db Bandwidth:
- -
- Charge Injection:
- 2pC
- Channel Capacitance (CS(off), CD(off)):
- 3pF, 26pF
- Current - Leakage (IS(off)) (Max):
- 750pA
- Crosstalk:
- -92dB @ 100kHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-PDIP
MAX309CPE FAQ
1.How can I place an order for MAX309CPE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX309CPE 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 MAX309CPE reliable?
The price and inventory of MAX309CPE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX309CPE is usually 5 days.
3.What payment methods are accepted for MAX309CPE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX309CPE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX309CPE?
MAX309CPE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX309CPE 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 MAX309CPE?
For technical support, including MAX309CPE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX309CPE requirements.
6.How does Aetrix verify that MAX309CPE is sourced from the original manufacturer or authorized distributors?
All MAX309CPE 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 MAX309CPE meets industry standards.
7.What is the process for return or replacement of MAX309CPE?
All MAX309CPE units undergo pre-shipment inspection (PSI). If there is an issue with MAX309CPE, 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 MAX309CPE part is unused and in its original packaging.
Return procedure for MAX309CPE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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