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Analog Devices Inc./Maxim Integrated MAX338EPE+
- Part No.:
- MAX338EPE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX338EPE+.pdf
- Description:
- IC MUX 8:1 400OHM 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,578
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Product details
Overview
MAX338EPE+ 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 ±4.5V to ±20V dual supplies or +4.5V to +30V single supply, features 400Ω max on-resistance, <20pA NO-off leakage at +25°C, and 1.5pC typical charge injection-enabling precision signal routing in data-acquisition and test equipment.
For engineers reviewing the MAX338EPE+ datasheet, MAX338EPE+ pinout, MAX338EPE+ application, or MAX338EPE+ equivalent, key selection criteria include guaranteed low leakage across -40°C to +85°C, rail-to-rail analog signal handling up to ±15V, break-before-make switching, and pin compatibility with industry-standard DG508A for drop-in upgrades in military radios and guidance systems.
Technical Context
The MAX338EPE+ implements a monolithic silicon-gate CMOS switch matrix with integrated decode logic, supporting both multiplexing and demultiplexing modes. Its architecture ensures symmetrical conduction in either direction, with all analog terminals (NO1–NO8, COM) rated for signals from V− to V+, and digital inputs tolerant from (V− −2V) to (V+ +2V).
Switching behavior is governed by a three-stage control path: address decoding (A0/A1/A2), enable gating (EN), and CMOS transmission gate drive. Charge injection is minimized via matched transistor sizing and layout symmetry, while ESD protection (>2000V per Method 3015.7) is implemented using diode-clamped I/O structures tied to V+ and V− rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance | 400Ω max at ±15V supplies - ensures minimal signal attenuation and gain error in precision DC-coupled paths |
| NO-Off Leakage | <20pA at +25°C - preserves high-impedance sensor node integrity and reduces offset drift in sample-and-hold circuits |
| Charge Injection | 1.5pC typ - limits voltage glitch on hold capacitors, enabling sub-12-bit settling in data-acquisition front-ends |
| Transition Time | <500ns - supports multiplexing of signals up to ~1MHz without significant edge distortion |
| Analog Signal Range | ±15V (dual supply) or 0–12V (single supply) - allows direct interfacing with industrial ±10V sensors and DACs |
| Supply Range | ±4.5V to ±20V dual or +4.5V to +30V single - accommodates legacy ±15V systems and modern 12V/24V industrial rails |
| Enable Turn-On Time | 500ns max - enables synchronized channel selection in time-critical test instrumentation |
Pinout & Package
MAX338EPE+ is housed in a 16-pin plastic DIP (PDIP) package with through-hole mounting, RoHS-compliant lead finish, and operating temperature range of –40°C to +85°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3–7, 9–12 | NO1–NO8 | Bidirectional analog input channels; each electrically isolated when off, rated for full V− to V+ swing |
| 2 | V− | Negative supply rail connection; must be decoupled locally to minimize noise coupling into analog paths |
| 8 | COM | Common bidirectional analog output terminal; carries full switched current, requires low-impedance load return path |
| 11 | V+ | Positive supply rail connection; powers internal logic and switch drivers; ties to exposed pad in TQFN variants |
| 12 | GND | Digital ground reference; separate from analog return but must share common potential with V− in single-supply configs |
| 13–15 | A0, A1, A2 | 3-bit binary address inputs; TTL/CMOS-compatible thresholds (+0.8V low, +2.4V high) ensure robust logic interfacing |
| 16 | EN | Active-high enable input; disables all switches when low, preventing unintended channel conduction during power-up |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports analog inputs spanning V− to V+ without clipping-critical for ±10V industrial sensor interfaces |
| Guaranteed low charge injection (1.5pC typ) | Minimizes voltage step on sampling capacitors, reducing acquisition time and improving effective resolution in ADC front-ends |
| Plug-in upgrade for DG508A | PIN-TO-PIN compatible with industry-standard 8-channel mux-enables field upgrades without PCB redesign |
| ESD protection >2000V (Method 3015.7) | Withstands handling and board-level ESD events without latch-up or parameter shift, enhancing manufacturing yield |
| Break-before-make switching | Ensures no momentary short between channels during address transitions-prevents signal crosstalk in multi-sensor systems |
Applications
| Data-Acquisition Systems | Test Equipment |
|---|---|
Use Scenario: Scanning multiple thermocouple or strain-gauge sensor outputs into a single high-resolution ADC channel. IC Role / Device Role / Timing Role: Precision analog multiplexer selecting one of eight low-leakage sensor paths to a shared instrumentation amplifier and ADC. Use Value: Sub-20pA off-leakage prevents bias current errors in high-Z sensor bridges; 400Ω RON match ensures consistent gain scaling across channels. |
Use Scenario: Automated test fixture routing calibration signals, DUT outputs, and reference voltages to measurement instruments. IC Role / Device Role / Timing Role: Bidirectional signal router enabling flexible stimulus/response path configuration under microcontroller control. Use Value: 500ns transition time supports 1MHz test signal switching; rail-to-rail operation handles ±5V calibration standards without level-shifting. |
| Military Radios | Guidance and Control Systems |
Use Scenario: Selecting between multiple RF front-end gain stages or antenna diversity paths in ruggedized comms hardware. IC Role / Device Role / Timing Role: High-reliability analog switch managing signal routing in wide-temperature (-40°C to +85°C) RF subsystems. Use Value: Guaranteed performance over full military temp range; >2000V ESD rating withstands harsh deployment environments. |
Use Scenario: Multiplexing inertial measurement unit (IMU) outputs, GPS timing pulses, and actuator feedback signals in flight control units. IC Role / Device Role / Timing Role: Low-noise, low-drift analog switch ensuring signal fidelity in closed-loop servo and navigation algorithms. Use Value: 1.5pC charge injection prevents timing jitter on GPS 1PPS signals; <10Ω RON matching maintains phase coherence across sensor channels. |
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 (500Ω max), higher charge injection (5pC), no guaranteed ESD rating | Limited to commercial-temp (0°C to +70°C) and lower-precision systems | Select DG508A only for cost-sensitive, non-military designs where leakage & charge specs are relaxed |
| MAX328 | Lower leakage (<5pA), lower charge injection (0.5pC), but higher on-resistance (1kΩ max) | Better for ultra-high-Z electrometer-grade measurements; unsuitable for low-impedance audio or power monitoring | Choose MAX328 when picoampere-level leakage dominates system error budget, accepting higher RON penalty |
Compared with DG508A and MAX328, the MAX338EPE+ delivers optimal balance: industry-standard pinout with upgraded leakage/charge specs and extended temperature range, making it ideal for ruggedized data loggers and avionics where reliability and precision coexist.
Availability
MAX338EPE+ is available at Aetrix Electronics and suitable for data-acquisition systems, military radio front-ends, and guidance and control systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX338EPE+ 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 automotive markets.
The MAX338EPE+ belongs to Maxim's precision analog multiplexer product line, engineered for low-leakage, low-charge-injection signal routing in mission-critical instrumentation and defense electronics.
FAQ
What is the maximum allowable supply voltage for MAX338EPE+?
The MAX338EPE+ supports dual supplies from ±4.5V to ±20V or a single supply from +4.5V to +30V. Absolute maximum ratings specify V+ to V− differential up to 44V; exceeding ±20V or +30V risks permanent damage. Operation at ±20V yields full ±15V analog signal range, while +30V single supply enables 0–24V signal handling with appropriate V− = GND connection.
Does MAX338EPE+ support break-before-make switching?
Yes, the MAX338EPE+ guarantees break-before-make operation with a minimum 10ns and maximum 140ns open interval during address transitions. This prevents momentary shorts between channels, eliminating crosstalk in multi-sensor systems and protecting downstream circuitry from transient current surges during reconfiguration.
Can MAX338EPE+ operate with unbalanced supplies like +24V and -5V?
Yes, the MAX338EPE+ supports unbalanced supplies such as +24V and -5V, provided the total V+ to V− differential does not exceed 44V and each rail stays within its absolute maximum rating (V+ ≤ 44V above V−, GND ≤ 25V above V−). Analog signal range becomes limited to V− to V+, so in this example, signals may swing from -5V to +24V.
What is the significance of the '+' suffix in MAX338EPE+?
The '+' suffix in MAX338EPE+ denotes a lead(Pb)-free and RoHS-compliant version of the device, packaged in a 16-pin PDIP. It shares identical electrical specifications, temperature range (-40°C to +85°C), and pinout with non-RoHS variants, but uses matte tin plating instead of traditional SnPb finish-ensuring compliance with environmental regulations without design or qualification impact.
How does MAX338EPE+ compare to MAX338CPE+?
The MAX338EPE+ and MAX338CPE+ share identical pinout, package (16 PDIP), and core functionality, but differ in temperature grade: MAX338EPE+ is rated for -40°C to +85°C, while MAX338CPE+ is limited to 0°C to +70°C. Electrical parameters-including leakage, RON, and switching times-are specified over their respective ranges, making MAX338EPE+ suitable for industrial and military applications demanding extended thermal performance.
MAX338EPE+ 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:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-PDIP
MAX338EPE+ FAQ
1.How can I place an order for MAX338EPE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX338EPE+ 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 MAX338EPE+ reliable?
The price and inventory of MAX338EPE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX338EPE+ is usually 5 days.
3.What payment methods are accepted for MAX338EPE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX338EPE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX338EPE+?
MAX338EPE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX338EPE+ 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 MAX338EPE+?
For technical support, including MAX338EPE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX338EPE+ requirements.
6.How does Aetrix verify that MAX338EPE+ is sourced from the original manufacturer or authorized distributors?
All MAX338EPE+ 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 MAX338EPE+ meets industry standards.
7.What is the process for return or replacement of MAX338EPE+?
All MAX338EPE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX338EPE+, 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 MAX338EPE+ part is unused and in its original packaging.
Return procedure for MAX338EPE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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