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Analog Devices Inc./Maxim Integrated MAX338MSE/PR3+T
- Part No.:
- MAX338MSE/PR3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX338MSE/PR3+T.pdf
- Description:
- IC MUX 8:1 400OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,910
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Product details
Overview
MAX338MSE/PR3+T from Maxim Integrated is an 8-channel single-ended CMOS analog multiplexer designed to route one of eight bidirectional analog inputs to a common COM terminal under 3-bit binary address control. It features 400Ω max on-resistance, <20pA NO-off leakage at +25°C, and 1.5pC typical charge injection-enabling precision signal routing in high-impedance data-acquisition systems operating across ±4.5V to ±20V dual supplies or +4.5V to +30V single supply.
For engineers reviewing the MAX338MSE/PR3+T datasheet, MAX338MSE/PR3+T pinout, MAX338MSE/PR3+T application, or MAX338MSE/PR3+T equivalent, key selection criteria include guaranteed low leakage over -55°C to +125°C, rail-to-rail analog signal handling up to ±15V, TTL/CMOS-compatible enable and address inputs, and ESD protection >2000V per Method 3015.7.
Technical Context
The MAX338MSE/PR3+T implements a monolithic silicon-gate CMOS switch architecture with integrated decode logic for 3-bit address selection (A0–A2) and active-high enable (EN). Its bidirectional analog path supports rail-to-rail signal voltages from V− to V+, with no internal level-shifting circuitry-requiring external supply sequencing (V+ before V−) to avoid latch-up.
Switching performance is defined by 500ns max transition time, 140ns max break-before-make interval, and 750ns max enable turn-on/off times across full temperature range. Charge injection (1.5pC typ) and off-isolation (-75dB at 100kHz) are specified with 100pF load and 0Ω source impedance, directly impacting settling accuracy in sample-and-hold and multiplexed ADC front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance | 400Ω max at TA = +25°C; ensures ≤0.2% gain error in 12-bit systems with 200kΩ source impedance |
| NO-Off Leakage Current | <20pA at +25°C; enables >100GΩ effective input impedance in high-precision sensor interfaces |
| Charge Injection | 1.5pC typical; limits voltage glitch to <15mV on 100pF hold capacitor, critical for sub-LSB settling |
| Supply Range | ±4.5V to ±20V dual or +4.5V to +30V single; supports industrial ±15V and automotive 24V systems |
| Operating Temperature | -55°C to +125°C; qualified for military-grade guidance, control, and avionics applications |
| ESD Protection | >2000V per Method 3015.7; eliminates need for external TVS diodes in ruggedized test equipment |
| Transition Time | <500ns; allows multiplexing at ≥1MHz channel rate without inter-symbol interference |
Pinout & Package
MAX338MSE/PR3+T is supplied in a 16-pin narrow SO package (package code S16+1), RoHS-compliant with lead-free finish. The exposed pad is not present in this variant (only TQFN-EP packages feature EP).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5, 6, 7, 9, 10 | NO1–NO8 | Bidirectional analog inputs; each capable of sourcing/sinking 30mA continuous current |
| 8 | COM | Common analog output terminal; shares same voltage range and leakage specs as NO pins |
| 11 | V+ | Positive supply input; absolute max 44V above V−; must be powered before V− to prevent damage |
| 12 | GND | Ground reference for logic inputs only; isolated from analog signal path |
| 13 | A2 | MSB address input; TTL/CMOS compatible (0.8V–2.4V thresholds) across full temp range |
| 14 | A1 | Middle address bit; controls channel decoding with A0 and A2 per truth table |
| 15 | A0 | LSB address input; all three address pins must be stable before EN assertion |
| 16 | EN | Active-high enable; disables all switches when low; 100nA max input current minimizes loading |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports signals from V− to V+ without clipping-enables direct interfacing with ±15V op-amps and sensors |
| Guaranteed low charge injection (1.5pC) | Reduces hold-step error in multiplexed sample-and-hold circuits, enabling 16-bit ADC accuracy |
| Pin-compatible upgrade for DG508A | Direct replacement in legacy designs without PCB modification-same pinout and function mapping |
| Low on-resistance match (≤10Ω) | Minimizes channel-to-channel gain mismatch in multi-sensor measurement systems |
| TTL/CMOS logic compatibility | Eliminates need for level translators when driven by FPGA or microcontroller GPIOs |
Applications
| Data-Acquisition Systems | Test Equipment |
|---|---|
Use Scenario: Multiplexing outputs from 8 thermocouple amplifiers into a single 16-bit SAR ADC. IC Role / Device Role / Timing Role: Analog signal router selecting one of eight differential inputs to COM, synchronized to ADC conversion start. Use Value: 20pA off-leakage prevents thermal EMF drift; 400Ω RON introduces <0.002% gain error with 200kΩ source impedance. |
Use Scenario: Automated switching between calibration standards and DUT in benchtop multimeters. IC Role / Device Role / Timing Role: Precision analog switch isolating reference voltage paths during auto-ranging sequences. Use Value: 1.5pC charge injection avoids offset shifts during rapid channel changes; -75dB off-isolation suppresses crosstalk between 100kHz test tones. |
| Military Radios | Guidance and Control Systems |
Use Scenario: Routing RF front-end IF signals between diversity antennas and demodulator chains. IC Role / Device Role / Timing Role: Low-leakage analog mux enabling fast antenna selection without DC bias disruption. Use Value: -55°C to +125°C rating ensures operation in unheated airborne enclosures; 2000V ESD withstand protects against static discharge in field maintenance. |
Use Scenario: Selecting inertial sensor outputs (gyro, accelerometer) for real-time attitude computation. IC Role / Device Role / Timing Role: High-reliability analog switch providing fault-tolerant sensor redundancy management. Use Value: 500ns transition time supports 1kHz sensor sampling; 400Ω RON maintains signal integrity with MEMS sensor's 10kΩ output impedance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DG508A | Higher on-resistance (600Ω max), higher charge injection (5pC), no ESD rating | Limited to commercial-temp, non-ruggedized systems; lacks rail-to-rail support | Legacy drop-in where MAX338MSE/PR3+T's enhanced specs are unnecessary |
| MAX328 | Lower leakage (5pA off), lower charge injection (0.5pC), but higher on-resistance (800Ω max) | Better for ultra-high-Z electrometer circuits; unsuitable for low-impedance audio or power monitoring | Select when leakage dominates error budget over resistance-e.g., pH probe multiplexing |
Compared with DG508A and MAX328, the MAX338MSE/PR3+T delivers optimal balance of low leakage, low charge injection, and moderate on-resistance across extended temperature, making it preferred for military and industrial data acquisition where reliability and precision coexist.
Availability
MAX338MSE/PR3+T is available at Aetrix Electronics and suitable for data-acquisition systems, military radios, and guidance and control systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX338MSE/PR3+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 semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing applications.
The MAX338 series belongs to Maxim's precision analog switch product line, engineered for low-leakage, low-charge-injection multiplexing in demanding environments such as aerospace, defense, and automated test equipment.
FAQ
What is the maximum allowable supply voltage difference for MAX338MSE/PR3+T?
The MAX338MSE/PR3+T specifies an absolute maximum V+ − V− of 44V. This allows operation with asymmetric supplies like +24V/−5V (29V difference) or ±20V (40V difference), provided both rails stay within their individual voltage limits relative to GND. Exceeding 44V risks permanent damage to the internal oxide layers.
Does MAX338MSE/PR3+T support single-supply operation with V− tied to GND?
Yes, MAX338MSE/PR3+T supports single-supply operation: connect V− to GND and apply +4.5V to +30V to V+. In this configuration, the analog signal range becomes 0V to V+, and logic inputs remain TTL/CMOS compatible. Note that on-resistance increases slightly (e.g., 650Ω max at +12V) compared to dual-supply operation.
How does the -55°C to +125°C temperature rating affect leakage performance of MAX338MSE/PR3+T?
At the extremes of its rated range, MAX338MSE/PR3+T guarantees NO-off leakage ≤1.25nA (C/E grade) and ≤20nA (M grade) - verified by 100% hot-temperature testing. While leakage rises exponentially with temperature, the M-grade qualification ensures predictable behavior in engine bay or avionics bay deployments where ambient exceeds +85°C.
Is MAX338MSE/PR3+T pin-compatible with the industry-standard DG508A?
Yes, MAX338MSE/PR3+T is explicitly documented as a pin-compatible upgrade for DG508A in the datasheet. All 16 pins-including NO1–NO8, COM, V+, V−, GND, A0–A2, and EN-map identically in the narrow SO package, enabling direct replacement without layout changes or firmware updates.
What is the significance of the "/PR3+" suffix in MAX338MSE/PR3+T?
The "/PR3+" suffix denotes Maxim's tape-and-reel packaging option with 2.5k-unit reels and Pb-free/RoHS-compliant finish. The "T" in the full part number MAX338MSE/PR3+T confirms tape-and-reel delivery; the base device MAX338MSE/PR3+ is identical electrically and thermally, differing only in packaging format.
MAX338MSE/PR3+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- 8:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 400Ohm
- Channel-to-Channel Matching (ΔRon):
- 4Ohm (Typ)
- Voltage - Supply, Single (V+):
- 4.5V ~ 30V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 500ns, 500ns
- -3db Bandwidth:
- -
- Charge Injection:
- 1.5pC
- Channel Capacitance (CS(off), CD(off)):
- 3pF, 11pF
- Current - Leakage (IS(off)) (Max):
- 20pA
- Crosstalk:
- -92dB @ 100kHz
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX338MSE/PR3+T FAQ
1.How can I place an order for MAX338MSE/PR3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX338MSE/PR3+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 MAX338MSE/PR3+T reliable?
The price and inventory of MAX338MSE/PR3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX338MSE/PR3+T is usually 5 days.
3.What payment methods are accepted for MAX338MSE/PR3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX338MSE/PR3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX338MSE/PR3+T?
MAX338MSE/PR3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX338MSE/PR3+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 MAX338MSE/PR3+T?
For technical support, including MAX338MSE/PR3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX338MSE/PR3+T requirements.
6.How does Aetrix verify that MAX338MSE/PR3+T is sourced from the original manufacturer or authorized distributors?
All MAX338MSE/PR3+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 MAX338MSE/PR3+T meets industry standards.
7.What is the process for return or replacement of MAX338MSE/PR3+T?
All MAX338MSE/PR3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX338MSE/PR3+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 MAX338MSE/PR3+T part is unused and in its original packaging.
Return procedure for MAX338MSE/PR3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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