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Analog Devices Inc./Maxim Integrated MAX309CSE+T
- Part No.:
- MAX309CSE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX309CSE+T.pdf
- Description:
- IC SWITCH SP4T X 2 100OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,637
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Product details
Overview
MAX309CSE+T 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, <5nA NO-off leakage at +85°C, and rail-to-rail signal handling with ±5V to ±20V or +5V to +30V supply operation - enabling accurate signal selection in military radios and guidance systems.
For engineers reviewing the MAX309CSE+T datasheet, MAX309CSE+T pinout, MAX309CSE+T application, or MAX309CSE+T equivalent, key selection criteria include guaranteed on-resistance flatness (≤7Ω max), COM-off leakage (<20nA at +85°C), enable-controlled switching (tON(EN) ≤ 600ns), dual-supply compatibility, and plug-in upgrade path from DG409/DG509A.
Technical Context
The MAX309CSE+T implements a CMOS decode logic architecture with dual independent 4-channel differential switch banks (COMA/NO1A–NO4A and COMB/NO1B–NO4B), each controlled by shared A1/A0 address lines and individual EN enable. Its silicon-gate process ensures low charge injection and ESD robustness (>2000V).
It supports break-before-make switching (tOPEN ≤ 450ns), operates across full analog signal ranges (±10V typical with ±15V supplies), and maintains TTL/CMOS logic compatibility while delivering low power consumption (<300µW) and minimal crosstalk (−92dB).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance | <100Ω max - ensures minimal signal attenuation and voltage drop in precision analog paths |
| On-Resistance Matching | <5Ω max - enables accurate ratiometric measurements and matched gain paths |
| Charge Injection | <10pC - reduces sampling error and settling time in sample-and-hold circuits |
| NO-Off Leakage | <5nA at +85°C - preserves signal integrity in high-impedance sensor interfaces |
| Analog Signal Range | ±5V to ±20V (bipolar), +5V to +30V (single) - supports wide dynamic range signal routing |
| Enable Turn-On Time | ≤600ns - enables fast channel switching in automated test equipment |
| ESD Protection | >2000V HBM - enhances reliability in handling-sensitive industrial environments |
Pinout & Package
MAX309CSE+T is housed in a 16-pin narrow SOIC (SO) package with 1.27mm pitch, RoHS-compliant and moisture-sensitive level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | A0, A1 | Binary address inputs selecting active channel pair (00–11) for both COMA/COMB banks |
| 2 | EN | Active-high enable controlling conduction state of all switches simultaneously |
| 3 | V− | Negative supply rail input - must be connected for bipolar operation or grounded for single supply |
| 4–7 | NO1A–NO4A | Bidirectional analog inputs for first differential bank (switched to COMA when selected) |
| 8, 9 | COMA, COMB | Common analog outputs - COMA routes NO1A–NO4A; COMB routes NO1B–NO4B |
| 10–13 | NO4B–NO1B | Bidirectional analog inputs for second differential bank (switched to COMB when selected) |
| 14 | V+ | Positive supply rail input - supports up to +30V single or +20V bipolar operation |
| 15 | GND | Logic ground reference - tied to V− in single-supply configurations |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports full-scale analog signals from V− to V+, eliminating clipping in ±15V systems |
| Guaranteed on-resistance flatness | ≤7Ω variation over entire signal range - critical for linearity in data acquisition front-ends |
| Plug-in upgrade for DG409/DG509A | Pin- and function-compatible replacement with improved leakage, matching, and ESD performance |
| Low power consumption | <300µW quiescent - extends battery life in portable PBX and heads-up display systems |
| TTL/CMOS logic compatible inputs | Accepts standard logic thresholds (VAL ≤ 0.8V, VAH ≥ 2.4V) without level-shifting circuitry |
Applications
| Military Radios | Guidance and Control Systems |
|---|---|
Use Scenario: Selecting between multiple RF front-end calibration paths during frequency hopping or antenna diversity switching. IC Role / Device Role / Timing Role: Differential analog mux routing calibrated reference signals to ADCs or DACs with sub-5Ω channel matching. Use Value: Maintains amplitude accuracy and phase coherence across switched paths due to matched on-resistance and low charge injection. | Use Scenario: Routing inertial sensor outputs (gyro, accelerometer) to redundant signal conditioning chains in flight control units. IC Role / Device Role / Timing Role: High-reliability differential switch enabling fault-tolerant analog signal distribution with <5nA off-leakage at extended temperature. Use Value: Prevents signal corruption from leakage-induced offset drift in safety-critical closed-loop feedback paths. |
| Automatic Test Equipment | Heads-Up Displays |
Use Scenario: Multiplexing DUT analog stimulus/response channels onto shared precision measurement resources. IC Role / Device Role / Timing Role: Fast-enable (≤600ns) differential mux supporting high-throughput parametric testing with minimal channel crosstalk (−92dB). Use Value: Enables rapid reconfiguration without measurement contamination from adjacent channels or switching transients. | Use Scenario: Switching between HUD video sources (primary flight display, synthetic vision, FLIR feed) in avionics systems. IC Role / Device Role / Timing Role: Low-distortion analog switch handling composite video or LVDS-equivalent analog video signals with rail-to-rail swing. Use Value: Preserves image fidelity and timing integrity through low on-resistance flatness and <10pC charge injection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX309ESE | Same functionality and pinout, but rated for −40°C to +85°C industrial temperature range | Suitable for extended-temperature embedded systems where MAX309CSE+T's 0°C to +70°C range is insufficient | Select MAX309ESE when operating outside commercial temperature limits; otherwise MAX309CSE+T is optimal for cost-sensitive designs |
| DG409DN | Legacy industry-standard 2-of-4 differential mux; higher on-resistance (125Ω), no guaranteed matching or charge injection spec | Lacks guaranteed flatness, matching, and low-leakage specs required for precision instrumentation | Use only as legacy drop-in where performance degradation is acceptable; MAX309CSE+T provides measurable improvement in signal fidelity |
Compared with MAX309ESE, the MAX309CSE+T offers lower cost and tighter initial specifications but reduced thermal margin; compared with DG409DN, it delivers superior on-resistance matching, lower leakage, and guaranteed charge injection - directly improving measurement accuracy and system reliability.
Availability
MAX309CSE+T is available at Aetrix Electronics and suitable for military radios, guidance and control systems, automatic test equipment, heads-up displays, and communications systems requiring stable component supply and long-term sourcing continuity.
Supply support for MAX309CSE+T 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 aerospace applications.
The MAX308/MAX309 product line was designed specifically for precision analog signal routing in high-reliability systems where low distortion, matched channel performance, and robust operation across wide supply and temperature ranges are essential.
FAQ
What is the maximum analog signal range supported by the MAX309CSE+T?
The MAX309CSE+T supports an analog signal range of ±5V to ±20V with bipolar supplies and +5V to +30V with single supplies. At ±15V, the full range extends from V− to V+, enabling rail-to-rail operation. This range is confirmed in the Electrical Characteristics tables under "Analog Signal Range" for both dual- and single-supply conditions, and applies directly to the MAX309CSE+T variant.
Does the MAX309CSE+T require external pull-up resistors on its address or enable pins?
No, the MAX309CSE+T does not require external pull-up resistors. Its CMOS inputs have low input current (±1.0µA max) and are TTL/CMOS-logic compatible with defined thresholds (VAL ≤ 0.8V, VAH ≥ 2.4V). The internal input structure provides sufficient noise immunity without external biasing, as verified in the "Input Current" specifications for IAH and IAL in the MAX309CSE+T datasheet.
Can the MAX309CSE+T operate with unbalanced supplies such as +24V and −5V?
Yes, the MAX309CSE+T can operate with unbalanced supplies like +24V and −5V, provided the difference between V+ and V− does not exceed +44V and each supply remains within its absolute maximum rating (V+ ≤ 44V referenced to V−, GND ≤ 25V referenced to V−). This capability is explicitly stated in the Applications Information section and confirmed by the Absolute Maximum Ratings table for the MAX309CSE+T.
What is the guaranteed on-resistance matching specification for the MAX309CSE+T?
The MAX309CSE+T guarantees on-resistance matching of less than 5Ω between channels, as specified in both the General Description and Electrical Characteristics tables. This parameter (∆RON) is tested and guaranteed across the full operating temperature range (0°C to +70°C for the C-grade MAX309CSE+T), ensuring consistent gain and signal integrity across all four differential channels.
Is the MAX309CSE+T pin-compatible with the DG409 analog multiplexer?
Yes, the MAX309CSE+T is a plug-in upgrade for the DG409, sharing identical pinout, function, and logic interface. The datasheet explicitly states this compatibility and confirms identical pin configuration for the 16-pin SO package. However, users should verify layout compatibility for thermal and decoupling requirements, as the MAX309CSE+T delivers improved electrical performance including lower on-resistance and leakage.
MAX309CSE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX309CSE+T FAQ
1.How can I place an order for MAX309CSE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX309CSE+T 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 MAX309CSE+T reliable?
The price and inventory of MAX309CSE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX309CSE+T is usually 5 days.
3.What payment methods are accepted for MAX309CSE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX309CSE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX309CSE+T?
MAX309CSE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX309CSE+T 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 MAX309CSE+T?
For technical support, including MAX309CSE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX309CSE+T requirements.
6.How does Aetrix verify that MAX309CSE+T is sourced from the original manufacturer or authorized distributors?
All MAX309CSE+T 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 MAX309CSE+T meets industry standards.
7.What is the process for return or replacement of MAX309CSE+T?
All MAX309CSE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX309CSE+T, 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 MAX309CSE+T part is unused and in its original packaging.
Return procedure for MAX309CSE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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