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Analog Devices Inc./Maxim Integrated MAX338CSE+
- Part No.:
- MAX338CSE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX338CSE+.pdf
- Description:
- IC MUX 8:1 400OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:585
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Product details
Overview
MAX338CSE+ 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 output under 3-bit binary address control. It features ≤400Ω on-resistance, <20pA NO-off leakage at +25°C, and 1.5pC typical charge injection-enabling precision data-acquisition systems operating from ±4.5V to ±20V or +4.5V to +30V supplies.
For engineers reviewing the MAX338CSE+ datasheet, MAX338CSE+ pinout, MAX338CSE+ application, or MAX338CSE+ equivalent, key selection criteria include rail-to-rail signal handling, TTL/CMOS-compatible enable/address inputs, guaranteed low leakage across temperature, ESD protection >2000V, and pin-compatibility with DG508A in narrow SO-16 packaging.
Technical Context
The MAX338CSE+ implements a monolithic silicon-gate CMOS switch matrix with integrated decode logic for 3-bit address (A0–A2) and active-high enable (EN). Its architecture supports bidirectional current flow and rail-to-rail analog signal switching between V− and V+, with no internal level-shifting circuitry.
All digital inputs meet TTL thresholds (+0.8V to +2.4V) across the full ±4.5V to ±18V supply range and 0°C to +70°C ambient. The device uses Maxim's 44V process, enabling operation with unbalanced supplies (e.g., +24V/−5V) while maintaining ≤500ns transition time and ≤140ns break-before-make interval.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance | ≤400Ω max at ±15V, ensures minimal voltage drop and gain error in precision sensor or DAC/ADC signal paths |
| NO-Off Leakage | <20pA at +25°C, critical for high-impedance sample-and-hold and electrometer-grade measurement circuits |
| Charge Injection | 1.5pC typ, limits settling error and droop in fast-switching data acquisition front-ends |
| Transition Time | <500ns, supports multiplexing rates up to ~1MHz in time-critical test equipment |
| Supply Range | Single: +4.5V to +30V; Dual: ±4.5V to ±20V - enables direct interface with industrial ±15V and automotive 12V/24V rails |
| ESD Protection | >2000V per Method 3015.7, reduces need for external TVS diodes in field-deployed military radios |
| On-Resistance Match | <10Ω between channels, maintains channel-to-channel gain consistency in multi-sensor monitoring |
Pinout & Package
MAX338CSE+ is housed in a 16-pin narrow SOIC (Small Outline Integrated Circuit) package with RoHS-compliant lead-free finish. Pin pitch is 0.050", body width 0.154", and total length 0.394". Thermal performance includes 8.70mW/°C derating above +70°C (696mW max at TA = +70°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V− | Negative supply rail input; must be connected for dual-supply operation or tied to GND for single-supply use |
| 2–5 | NO1–NO4 | Bidirectional analog input terminals; support rail-to-rail signals from V− to V+ |
| 6 | COM | Common analog output terminal; shares same voltage range and bidirectional capability as NO pins |
| 7–10 | NO5–NO8 | Bidirectional analog input terminals; electrically identical to NO1–NO4 |
| 11 | V+ | Positive supply rail input; establishes upper analog signal limit and powers internal logic |
| 12 | GND | Digital ground reference; separate from analog return but must be low-impedance for noise control |
| 13 | A2 | MSB address input; controls channel selection with A1 and A0 per truth table |
| 14 | A1 | Middle address bit; decoding logic ensures only one channel conducts when EN = high |
| 15 | A0 | LSB address input; all three bits required for deterministic 8:1 routing |
| 16 | EN | Active-high enable; disables all switches when low, reducing system power and crosstalk |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports analog inputs spanning V− to V+ without clipping - essential for ±10V industrial sensor interfaces |
| TTL/CMOS logic compatibility | Accepts 0.8V/2.4V thresholds across full supply and temperature range - eliminates level-shifters in microcontroller-connected systems |
| Plug-in upgrade for DG508A | Identical pinout and function in SO-16 package - enables drop-in replacement without PCB redesign |
| Guaranteed low charge injection | 1.5pC typical minimizes voltage glitch on high-capacitance nodes like integrator inputs or ADC sample capacitors |
| Low on-resistance matching | <10Ω channel-to-channel variation preserves amplitude accuracy across multiplexed sensor arrays |
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 feed the ADC's input stage. Use Value: ≤20pA off-leakage prevents thermal EMF drift; ≤400Ω RON avoids gain error in precision instrumentation amplifier feedback paths. | Use Scenario: Automated switching of calibration reference voltages (±10V standards) into DMM input stages. IC Role / Device Role / Timing Role: Precision analog switch enabling traceable, software-controlled reference selection during self-test sequences. Use Value: 1.5pC charge injection ensures sub-LSB settling on 100pF input capacitance; rail-to-rail operation covers full calibration range. |
| Military Radios | Guidance and Control Systems |
Use Scenario: Routing RF detector outputs from multiple antenna elements to a common IF processing chain. IC Role / Device Role / Timing Role: Low-leakage analog mux isolating receive paths during transmit/receive switching cycles. Use Value: >2000V ESD rating withstands harsh field environments; <500ns transition time supports rapid frequency-hopping protocols. | Use Scenario: Selecting among redundant inertial measurement unit (IMU) analog outputs for fault-tolerant navigation processing. IC Role / Device Role / Timing Role: High-reliability signal selector ensuring continuity of gyro/accelerometer data streams during component failure. Use Value: ≤10Ω on-resistance matching guarantees consistent scaling across redundant channels; −55°C to +125°C variants available for extended operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DG508A | Legacy industry-standard 8-channel mux; higher on-resistance (600Ω typ), higher charge injection (5pC), no ESD rating specified | Lacks guaranteed low-leakage spec at temperature extremes; not RoHS-compliant | Use only for legacy repair or cost-sensitive non-RoHS designs where leakage & ESD are non-critical |
| MAX328 | Lower leakage (<5pA off), lower charge injection (0.5pC), but higher on-resistance (1.2kΩ max) | Better for ultra-high-impedance electrometer circuits; unsuitable for low-voltage-drop signal chains | Select when picoamp-level leakage dominates design requirements over on-resistance or bandwidth |
Compared with DG508A, MAX338CSE+ delivers superior leakage, ESD robustness, and RoHS compliance in identical SO-16 packaging; compared with MAX328, it trades higher on-resistance for significantly better signal fidelity in medium-impedance data acquisition paths.
Availability
MAX338CSE+ is available at Aetrix Electronics and suitable for data-acquisition systems, test equipment, and military radio designs requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for MAX338CSE+ 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 computing markets.
The MAX338 series belongs to Maxim's precision analog switch product line, engineered specifically for low-leakage, low-charge-injection multiplexing in demanding measurement and control applications where signal integrity is paramount.
FAQ
What is the maximum allowable supply voltage difference for MAX338CSE+?
The MAX338CSE+ specifies an absolute maximum V+ to V− differential of 44V. This allows operation with asymmetric supplies such as +24V and −5V (29V total), provided each rail stays within its individual voltage rating (V+ ≤ +44V referenced to GND, V− ≥ −0.3V referenced to GND). Exceeding 44V risks permanent damage per the Absolute Maximum Ratings table.
Does MAX338CSE+ support single-supply operation with V− tied to GND?
Yes, MAX338CSE+ 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 all digital inputs remain TTL-compatible. The device's rail-to-rail capability ensures full utilization of the supply range for unipolar signals like sensor outputs or DAC references.
How does the enable (EN) pin affect leakage performance in MAX338CSE+?
When EN = low, all internal switches are fully disabled, reducing total supply current to ≤150µA and suppressing channel conduction. Critically, NO-off and COM-off leakage currents remain below their specified maximums (e.g., <20pA NO-off at +25°C) regardless of EN state - meaning leakage specs hold both enabled and disabled, supporting low-power standby modes without signal path degradation.
Can MAX338CSE+ be used in a demultiplexer configuration?
Yes, MAX338CSE+ functions bidirectionally and can operate as a demultiplexer: apply the analog signal to COM and use address/enable control to route it to one selected NOx pin. The datasheet explicitly states "both devices can be used as either a mux or a demux," and electrical characteristics (on-resistance, leakage, charge injection) are symmetric for NO and COM terminals.
What is the thermal derating behavior of MAX338CSE+ in narrow SO package?
MAX338CSE+ in narrow SO package has a thermal derating factor of 8.70mW/°C above +70°C ambient. Its maximum continuous power dissipation is 696mW at TA = +70°C; above that, allowable power decreases linearly - e.g., at +85°C, max dissipation is 696mW − (15°C × 8.70mW/°C) = 565.5mW. This reflects package-specific thermal resistance and must be applied in high-temperature industrial deployments.
MAX338CSE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- 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
- 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:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX338CSE+ FAQ
1.How can I place an order for MAX338CSE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX338CSE+ 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 MAX338CSE+ reliable?
The price and inventory of MAX338CSE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX338CSE+ is usually 5 days.
3.What payment methods are accepted for MAX338CSE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX338CSE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX338CSE+?
MAX338CSE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX338CSE+ 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 MAX338CSE+?
For technical support, including MAX338CSE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX338CSE+ requirements.
6.How does Aetrix verify that MAX338CSE+ is sourced from the original manufacturer or authorized distributors?
All MAX338CSE+ 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 MAX338CSE+ meets industry standards.
7.What is the process for return or replacement of MAX338CSE+?
All MAX338CSE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX338CSE+, 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 MAX338CSE+ part is unused and in its original packaging.
Return procedure for MAX338CSE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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