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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:1,773
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Product details
Overview
The MAX309CPE+ from Maxim Integrated is a precision differential 2-of-4 CMOS analog multiplexer, designed for bidirectional signal routing in high-fidelity analog systems. It delivers <100Ω on-resistance (max), <5Ω channel-to-channel matching, <10pC charge injection, and supports ±5V to ±20V bipolar or +5V to +30V single-supply operation - enabling use in military radios, guidance systems, and battery-operated test equipment.
For engineers reviewing the MAX309CPE+ datasheet, MAX309CPE+ pinout, MAX309CPE+ application, or MAX309CPE+ equivalent, key selection criteria include guaranteed on-resistance flatness (≤7Ω over ±10V signal range), NO-off leakage <5nA at +85°C, COM-off leakage <20nA at +85°C, rail-to-rail signal handling, and TTL/CMOS logic compatibility without external level shifting.
Technical Context
The MAX309CPE+ implements a fully differential 4-channel × 2-path architecture with independent COMA/COMB outputs and dual NO1A–NO4A / NO1B–NO4B input banks. Its silicon-gate CMOS process ensures matched switch characteristics across channels and stable performance from -40°C to +85°C.
It uses internal decode logic driven by A0/A1/EN inputs to select one of four differential pairs, with break-before-make timing (115–450ns) preventing signal shorting. The device maintains low dynamic distortion via <3pF NO-off capacitance and <26pF COM-off capacitance at 1MHz, critical for audio and sample-and-hold fidelity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance | <100Ω max - ensures minimal signal attenuation and gain error in precision gain-setting or sensor front-end paths |
| On-Resistance Matching | <5Ω max between channels - enables accurate differential signal balancing and ratiometric measurement integrity |
| Charge Injection | <10pC - reduces voltage glitch and settling error in sample-and-hold circuits, especially with >1nF hold capacitors |
| NO-Off Leakage | <5nA at +85°C - preserves DC accuracy in high-impedance sensor multiplexing (e.g., thermocouples, pH electrodes) |
| Analog Signal Range | ±10V with ±15V supplies - supports full-rail operation across industrial and military voltage standards |
| Supply Range | +5V to +30V single or ±5V to ±20V dual - allows flexible power architecture integration without level-shifting circuitry |
| Transition Time | <250ns - enables fast channel switching in automatic test equipment scanning at ≥1MHz rates |
Pinout & Package
MAX309CPE+ is housed in a 16-pin plastic DIP package (0.300" wide), with through-hole mounting and industry-standard footprint compatible with legacy DG409 layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | A0, A1 | Binary address inputs selecting one of four differential switch pairs (00–11); TTL/CMOS-compatible thresholds (VAL ≤0.8V, VAH ≥2.4V) |
| 2 | EN | Active-high enable controlling all switches; when low, all paths are off with <20nA COM-off leakage |
| 3 | V− | Negative supply rail input - must be connected for bipolar operation; tied to GND for single-supply mode |
| 4–7 | NO1A–NO4A | First set of four bidirectional analog inputs for differential pair A |
| 8, 9 | COMA, COMB | Separate bidirectional common outputs for differential pair A and B - enables true differential signal routing without shared return path |
| 10–13 | NO4B–NO1B | Second set of four bidirectional analog inputs for differential pair B (reversed order per datasheet top view) |
| 14 | V+ | Positive supply rail input - supports up to +30V; substrate tied internally to V+ for latch-up immunity |
| 15 | GND | Digital ground reference for logic inputs; electrically isolated from analog signal paths to minimize noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports analog signals spanning full V+ to V− range - eliminates clipping in ±10V instrumentation amplifier interfaces |
| Guaranteed on-resistance flatness | ≤7Ω variation across ±10V signal range - ensures consistent gain and linearity in programmable-gain amplifier (PGA) configurations |
| ESD protection | >2000V HBM - permits safe handling and board-level integration without additional transient suppression |
| Plug-in upgrade for DG409 | PIN-compatible replacement for DG409 with improved specs - no PCB redesign required for legacy system refresh |
| Low power consumption | <300µW typical - extends battery life in portable ATE and handheld test instruments |
Applications
| Military Radios | Guidance and Control Systems |
|---|---|
|
Use Scenario: Channel selection for RF front-end calibration paths and antenna diversity switching under extreme temperature cycling. IC Role / Device Role / Timing Role: Differential analog multiplexer routing calibrated reference signals to ADC inputs while rejecting common-mode noise. Use Value: <5nA NO-off leakage at +85°C prevents DC drift in RF power detector bias networks; <100Ω on-resistance minimizes insertion loss in 50Ω RF paths. |
Use Scenario: Multiplexing inertial sensor outputs (gyros, accelerometers) into a central navigation processor with minimal signal degradation. IC Role / Device Role / Timing Role: Precision differential switch enabling simultaneous sampling of matched sensor pairs to cancel thermal offset drift. Use Value: <5Ω on-resistance matching ensures identical gain across differential channels, preserving cross-axis orthogonality in attitude estimation algorithms. |
| Automatic Test Equipment | Heads-Up Displays |
|
Use Scenario: High-speed scanning of DUT analog I/O pins during functional testing, requiring sub-250ns channel switching and low crosstalk. IC Role / Device Role / Timing Role: Bidirectional analog mux providing reconfigurable signal paths between instrument sources and DUT terminals. Use Value: <250ns transition time enables ≥1MHz scan rates; -92dB crosstalk prevents interference between adjacent test channels during parallel measurements. |
Use Scenario: Routing video sync pulses and RGB signals from multiple sources (HUD processor, radar overlay, FLIR feed) to a single display driver. IC Role / Device Role / Timing Role: Low-distortion analog switch managing composite analog video paths with minimal timing skew. Use Value: <10pC charge injection prevents visible pixel artifacts during source switching; rail-to-rail support accommodates 0–5V video swing without clamping diodes. |
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 die, extended temperature range (-40°C to +85°C) vs. MAX309CPE+ (0°C to +70°C); identical pinout, electrical specs, and package | Suitable for industrial or automotive environments requiring wider operating temperature margin | Select MAX309EPE+ when ambient operating temperature exceeds +70°C or requires MIL-STD-810 qualification support |
| ADG409BRZ | 44V supply rating (vs. 44V absolute max for MAX309); higher on-resistance (100Ω typ vs. <100Ω max); no guaranteed on-resistance matching spec | Lacks guaranteed <5Ω channel matching and <7Ω flatness - less suitable for precision differential measurement | Choose ADG409BRZ only if higher voltage tolerance is primary requirement and matching/flatness specs are relaxed |
Compared with MAX309CPE+, MAX309EPE+ offers identical performance with extended temperature capability, while ADG409BRZ trades guaranteed matching and flatness for higher absolute supply rating - making MAX309CPE+ optimal for precision differential routing where channel consistency is critical.
Availability
MAX309CPE+ is available at Aetrix Electronics and suitable for military radios, guidance and control systems, and automatic test equipment requiring stable component supply across long production lifecycles and controlled obsolescence management.
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 precision analog, mixed-signal, and high-reliability ICs for demanding industrial, aerospace, and medical applications.
The MAX308/MAX309 family was developed to replace legacy DG-series multiplexers with enhanced on-resistance matching, lower charge injection, and guaranteed flatness - targeting high-accuracy data acquisition and signal routing in harsh environments.
FAQ
What is the maximum analog signal range supported by the MAX309CPE+?
The MAX309CPE+ supports an analog signal range of ±10V when operated with ±15V supplies, and scales linearly with supply voltage - e.g., ±5V supplies support ±5V signals. This rail-to-rail capability ensures full dynamic range utilization without external clamping or level-shifting circuitry in the MAX309CPE+ signal path.
Does the MAX309CPE+ require external pull-up resistors on its address or enable pins?
No, the MAX309CPE+ features CMOS logic inputs with TTL/CMOS-compatible thresholds (VAL ≤0.8V, VAH ≥2.4V) and input leakage <±1.0µA - eliminating need for external pull-ups. Direct connection to microcontroller GPIO or FPGA outputs is fully supported, simplifying interface design for the MAX309CPE+ in embedded systems.
Can the MAX309CPE+ operate from a single +12V supply?
Yes, the MAX309CPE+ operates from +5V to +30V single supply - connect V− to GND and use +12V on V+. Analog signal range becomes 0V to +12V, maintaining rail-to-rail operation. On-resistance increases slightly versus ±15V operation, but remains <120Ω (typ) per the MAX309CPE+ datasheet specifications.
How does the MAX309CPE+ handle differential signal routing compared to single-ended muxes like the MAX308?
The MAX309CPE+ provides two independent 4-channel differential banks (NO1A–NO4A/COMA and NO1B–NO4B/COMB), enabling true differential path selection without shared return paths. Unlike the MAX308's single-ended 1-of-8 topology, this architecture preserves common-mode rejection in instrumentation amplifiers and reduces noise coupling - a core functional distinction of the MAX309CPE+.
Is the MAX309CPE+ pin-compatible with the DG409 multiplexer?
Yes, the MAX309CPE+ is a direct plug-in upgrade for the DG409 in 16-pin DIP packages - identical pinout, supply connections, and logic interface. It improves upon the DG409 with lower on-resistance (<100Ω vs. ~125Ω), tighter matching (<5Ω vs. unspecified), and guaranteed flatness (≤7Ω), making the MAX309CPE+ drop-in compatible with enhanced performance.
MAX309CPE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- 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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