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Analog Devices Inc./Maxim Integrated MAX338CPE+
- Part No.:
- MAX338CPE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX338CPE+.pdf
- Description:
- IC MUX 8:1 400OHM 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,285
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Product details
Overview
MAX338CPE+ 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 (A0–A2), with TTL/CMOS-compatible enable (EN) and address inputs. It operates from single +4.5V to +30V or dual ±4.5V to ±20V supplies, delivers ≤400Ω on-resistance, <20pA NO-off leakage at +25°C, and 1.5pC typical charge injection-enabling precision signal routing in data-acquisition systems and test equipment.
For engineers reviewing the MAX338CPE+ datasheet, MAX338CPE+ pinout, MAX338CPE+ application, or MAX338CPE+ equivalent, key selection criteria include guaranteed low leakage (<20pA off-leakage), rail-to-rail analog signal handling (±15V dual supply), break-before-make timing (10–140ns), and pin-compatibility with industry-standard DG508A-critical for legacy system upgrades and low-error sampling designs.
Technical Context
The MAX338CPE+ implements a monolithic silicon-gate CMOS switch architecture with integrated decode logic, supporting both multiplexing and demultiplexing modes. Its bidirectional analog path maintains matched on-resistance (≤10Ω channel-to-channel variation) and low capacitance (3pF NO-off, 11pF COM-off), enabling high-fidelity signal integrity across DC to 100kHz.
All digital inputs (EN, A0–A2) are fully TTL-compatible over the full temperature range (0°C to +70°C) and supply range (±4.5V to ±18V), while internal ESD protection exceeds 2000V per Method 3015.7-ensuring robustness in industrial and military radio environments without external clamping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance | ≤400Ω max at ±15V dual supply; ensures minimal voltage drop and gain error in precision sensor or DAC output routing. |
| NO-Off Leakage Current | <20pA at +25°C; enables sub-µV offset stability in high-impedance sample-and-hold and medical front-end circuits. |
| Charge Injection | 1.5pC typical; limits voltage glitch on COM node during channel switching-critical for accurate ADC sampling. |
| Transition Time | <500ns; supports multiplexed data rates up to ~2MHz in automated test equipment scan paths. |
| Analog Signal Range | ±15V with ±15V supplies; allows full-rail operation with op-amps and transducers referenced to split supplies. |
| Supply Range | +4.5V to +30V (single) or ±4.5V to ±20V (dual); accommodates wide-input industrial sensors and legacy ±15V systems. |
| Enable Turn-On Time | 160–500ns; enables tight synchronization with microcontroller GPIO or FPGA control clocks. |
Pinout & Package
MAX338CPE+ is housed in a 16-pin plastic DIP (PDIP) package with 0.3-inch body width and through-hole mounting. Pin 1 is V−, pin 8 is COM, pin 13 is V+, and pin 14 is GND-matching standard DIP layout conventions for manual prototyping and socket-based test fixtures.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V− | Negative supply rail input; must be connected to −4.5V to −20V (dual) or GND (single-supply mode). |
| 2–7 | NO1–NO6 | Bidirectional analog input terminals; support rail-to-rail signal swing and equal conduction in either direction. |
| 8 | COM | Common analog output terminal; connects to ADC input, op-amp summing node, or instrumentation amplifier. |
| 9–12 | NO8–NO5 | Bidirectional analog input terminals; numbered in reverse physical order to match truth table sequence. |
| 13 | V+ | Positive supply rail input; accepts +4.5V to +30V (single) or +4.5V to +20V (dual). |
| 14 | GND | Digital ground reference; decoupled separately from analog ground in mixed-signal layouts. |
| 15 | A0 | LSB address input; TTL/CMOS-compatible (0.8V–2.4V thresholds) across full temperature and supply range. |
| 16 | A1 | Address input; used with A0 and A2 to select one of eight channels (000–111 binary). |
| - | A2 | MSB address input; located on pin 14 per functional diagram-confirmed via MAX338 top-view pinout. |
| - | EN | Active-high enable input; located on pin 11 per functional diagram-asserted high to activate decoding logic. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports analog signals from V− to V+ without clipping-enables direct interface with ±15V op-amps and industrial transducers. |
| Guaranteed low charge injection (1.5pC typ) | Minimizes settling error in sample-and-hold circuits, reducing post-switching correction time in precision ADC systems. |
| Plug-in upgrade for DG508A/DG509A | Pins 1–16 match DG508A pinout exactly-allows drop-in replacement without PCB modification in legacy military radio and guidance hardware. |
| ESD protection >2000V (Method 3015.7) | Eliminates need for external TVS diodes on analog I/O lines in field-deployable test equipment and avionics interfaces. |
| TTL/CMOS logic compatibility | Operates reliably with 3.3V or 5V microcontrollers without level-shifting-simplifies integration into embedded data loggers. |
Applications
| Data-Acquisition Systems | Test Equipment |
|---|---|
Use Scenario: Multiplexing outputs from 8 thermocouple amplifiers into a single 24-bit sigma-delta ADC. IC Role / Device Role / Timing Role: Analog mux providing channel-selectable, low-leakage signal path with sub-10ns break-before-make interval to prevent cross-talk during scanning. Use Value: 20pA off-leakage preserves µV-level thermocouple resolution; 400Ω RON minimizes gain error in PGA feedback paths. |
Use Scenario: Automated continuity and insulation resistance testing in handheld multimeters with shared analog front-end. IC Role / Device Role / Timing Role: Bidirectional switch routing DUT connections to current source, voltage source, and measurement nodes under microcontroller control. Use Value: Rail-to-rail ±15V operation supports both sourcing and sinking test voltages; 1.5pC charge injection prevents false triggers in high-impedance leakage tests. |
| Military Radios | Guidance and Control Systems |
Use Scenario: Selecting between multiple RF detector outputs for AGC loop monitoring in UHF/VHF transceivers. IC Role / Device Role / Timing Role: Low-noise analog switch isolating detector DC outputs from shared filter and comparator stages. Use Value: 92dB crosstalk rejection prevents interference between adjacent receiver channels; ESD >2000V withstands harsh vehicle-mount EMI environments. |
Use Scenario: Routing inertial sensor outputs (gyro, accelerometer) to fault-tolerant ADCs in triple-modular-redundant flight computers. IC Role / Device Role / Timing Role: High-reliability signal selector enabling dynamic reconfiguration of sensor voting logic during in-flight diagnostics. Use Value: 0°C to +70°C commercial temp grade meets MIL-STD-810G Class 2 operating requirements; pin-compatible DG508A upgrade simplifies DO-254 compliance documentation. |
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 (750Ω typ), higher charge injection (10pC), no guaranteed 20pA leakage spec. | Lacks ESD rating >2000V and rail-to-rail capability; requires tighter supply regulation. | Select only when legacy board footprint mandates exact mechanical fit and performance margin allows. |
| MAX328 | Lower leakage (<5pA), lower charge injection (0.5pC), but higher on-resistance (1.2kΩ max). | Better for ultra-high-Z pH sensors or photodiode amps; unsuitable for low-impedance DAC buffering. | Choose for sub-pA precision where RON >1kΩ is acceptable-e.g., electrometer-grade instrumentation. |
Compared with DG508A, MAX338CPE+ delivers 3× lower leakage and 7× lower charge injection with identical pinout; versus MAX328, it trades 3× lower RON for 4× higher leakage-making it optimal for general-purpose industrial multiplexing where speed and drive strength outweigh femtoamp sensitivity.
Availability
MAX338CPE+ is available at Aetrix Electronics and suitable for data-acquisition systems, test equipment, and military radios requiring stable component supply, long-term obsolescence management, and RoHS-compliant through-hole packaging.
Supply support for MAX338CPE+ 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 fabless semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and automotive markets.
The MAX338 series belongs to Maxim's precision analog switch product line, engineered for low-leakage, low-charge-injection signal routing in mission-critical data acquisition and instrumentation applications.
FAQ
What is the maximum supply voltage rating for MAX338CPE+?
The MAX338CPE+ supports a single positive supply up to +30V or dual supplies up to ±20V. Absolute maximum ratings specify V+ to GND ≤ +44V and V− to GND ≥ −25V. Operation beyond ±20V dual or +30V single supply risks permanent damage and violates the guaranteed electrical specifications in the datasheet.
Does MAX338CPE+ support single-supply operation with V− tied to GND?
Yes, MAX338CPE+ fully supports single-supply operation: connect V− to GND, apply +4.5V to +30V to V+, and ensure analog inputs remain within 0V to V+. The device maintains rail-to-rail signal handling (0V to V+), ≤400Ω on-resistance, and <20pA off-leakage under these conditions-verified in the Single Supply Electrical Characteristics table.
Is MAX338CPE+ pin-compatible with DG508A?
Yes, MAX338CPE+ is explicitly documented as a pin-compatible upgrade for DG508A. Pin functions-including V− (1), NO1 (2), NO2 (3), NO3 (4), NO4 (5), COM (6), NO8 (7), NO7 (8), NO6 (9), NO5 (10), EN (11), V+ (12), GND (13), A0 (14), A1 (15), A2 (16)-match DG508A exactly, enabling drop-in replacement without PCB changes.
What is the guaranteed maximum on-resistance matching between channels for MAX338CPE+?
The MAX338CPE+ guarantees on-resistance matching (ΔRON = RONMAX − RONMIN) of ≤10Ω at +25°C and ≤15Ω over the full 0°C to +70°C operating range. This tight matching ensures consistent gain and offset across all eight channels in programmable gain amplifier or calibration multiplexer applications.
Can MAX338CPE+ be used in demultiplexer mode?
Yes, MAX338CPE+ supports demultiplexer operation: apply a common analog signal to COM and use address bits A0–A2 to route it to one selected NOx output while others remain high-impedance. The bidirectional nature of the CMOS switches and symmetric leakage specs (<20pA NO-off, <50pA COM-on) make it functionally identical in mux/demux configurations.
MAX338CPE+ 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:
- Through Hole
- Supplier Device Package:
- 16-PDIP
MAX338CPE+ FAQ
1.How can I place an order for MAX338CPE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX338CPE+ 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 MAX338CPE+ reliable?
The price and inventory of MAX338CPE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX338CPE+ is usually 5 days.
3.What payment methods are accepted for MAX338CPE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX338CPE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX338CPE+?
MAX338CPE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX338CPE+ 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 MAX338CPE+?
For technical support, including MAX338CPE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX338CPE+ requirements.
6.How does Aetrix verify that MAX338CPE+ is sourced from the original manufacturer or authorized distributors?
All MAX338CPE+ 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 MAX338CPE+ meets industry standards.
7.What is the process for return or replacement of MAX338CPE+?
All MAX338CPE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX338CPE+, 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 MAX338CPE+ part is unused and in its original packaging.
Return procedure for MAX338CPE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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