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Analog Devices Inc./Maxim Integrated MAX329EPE
- Part No.:
- MAX329EPE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX329EPE.pdf
- Description:
- IC SWITCH SP4T X 2 3.5KOHM 16DIP
- Quantity:
- Payment:
- Shipping:
Inventory:525
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Product details
Overview
MAX329EPE from Maxim Integrated is a differential 2-of-8 monolithic CMOS analog multiplexer designed for high-precision signal routing in fault-prone environments. It delivers ultra-low off-leakage (1pA typ at +25°C), 2.5kΩ typical on-resistance, ±5V to ±18V dual-supply operation, and 1.5µs switching time - enabling use in data-acquisition systems requiring sub-40nV error under 110V AC fault conditions.
For engineers reviewing the MAX329EPE datasheet, MAX329EPE pinout, MAX329EPE application, or MAX329EPE equivalent, key selection criteria include its differential channel architecture, guaranteed leakage performance over temperature, fault-tolerant design with external 40kΩ resistors, and pin compatibility with DG509 and MAX359 in legacy industrial control and aircraft display systems.
Technical Context
The MAX329EPE implements a bidirectional, TTL/CMOS-compatible address decoder driving eight differential analog switch pairs (S1A/S1B through S4A/S4B), with independent enable control. Its latchup-proof construction and rail-to-rail analog signal range (±15V with ±15V supplies) support direct interfacing to op amps and ADCs without level-shifting.
It operates across unbalanced supply combinations (e.g., +12V/–5V), maintains <2% RDS(ON) variation between channels, and achieves 84dB off-isolation at 500kHz - critical for maintaining signal integrity in multiplexed sensor arrays and precision measurement front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | ±15V with ±15V supplies - supports full-rail input/output without clipping in bipolar signal chains |
| Drain-Source On-Resistance | 2.5kΩ typ - ensures minimal gain error and settling impact when driving high-Z loads like 16-bit ADC inputs |
| Off-Leakage Current | 1pA typ at +25°C - limits voltage error to ≤40nV with 40kΩ series resistors in fault-tolerant configurations |
| Switching Time | 1.5µs max - enables sampling rates up to ~300ksps in time-multiplexed acquisition systems |
| Supply Voltage Range | ±5V to ±18V - allows flexible integration into existing ±12V or ±15V industrial power domains |
| Off-Isolation | 84dB at 500kHz - suppresses crosstalk between active and inactive differential channels in dense routing |
| Charge Injection | 4pC max - minimizes pedestal error in sample-and-hold circuits following the multiplexer |
Pinout & Package
MAX329EPE is housed in a 16-pin plastic DIP package with lead(Pb)-free/RoHS-compliant finish. Pin assignments are validated per Maxim's official datasheet revision 3 (2/11).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3 | V− | Negative supply rail connection - must be decoupled locally to minimize noise coupling into analog paths |
| 2, 16 | A0, A1 | Binary address inputs - select one of four differential switch pairs (S1A/S1B to S4A/S4B) |
| 4–7 | S1A–S4A | First side of differential analog inputs - bidirectional, rail-to-rail capable |
| 8, 9 | DA, DB | Differential analog outputs - internally connected to selected SxA/SxB pair when EN = high |
| 10–13 | S4B–S1B | Second side of differential analog inputs - mirrored sequence to S1A–S4A for layout symmetry |
| 14 | GND | Analog ground reference - separate from digital ground in mixed-signal PCB layouts |
| 15 | EN | Enable control input - high-active logic; disables all switches and reduces supply current to <1µA when low |
| 11 | V+ | Positive supply rail connection - requires local 1µF ceramic bypass capacitor |
Key Features
| Feature | Design Value |
|---|---|
| Fault-tolerant architecture | With external 40kΩ resistors, withstands indefinite 110V AC faults while limiting error to <40nV |
| Rail-to-rail analog signal range | Operates with inputs and outputs spanning V− to V+, eliminating need for external clamping diodes |
| Bidirectional signal flow | Supports mux or demux operation without polarity constraints - simplifies system-level signal path design |
| Break-before-make switching | Guaranteed 0.2µs minimum open interval prevents momentary shorting between channels during address changes |
| Latchup-proof CMOS process | Immune to destructive latchup under overvoltage or ESD stress - enhances field reliability in harsh environments |
Applications
| Data-Acquisition Systems | Aircraft Heads-Up Displays |
|---|---|
Use Scenario: Multiplexing multiple high-impedance sensor outputs (e.g., thermocouples, strain gauges) into a single precision ADC channel. IC Role / Device Role / Timing Role: Differential analog switch providing channel selection with sub-40nV offset error under fault conditions. Use Value: Enables 17-bit effective resolution over –40°C to +85°C using 40kΩ protection resistors and internal low-leakage design. |
Use Scenario: Routing redundant video or symbol generator signals to HUD combiners with fail-safe continuity. IC Role / Device Role / Timing Role: Fault-tolerant differential switch ensuring uninterrupted signal path during transient line faults. Use Value: Withstands 120V AC line faults indefinitely without component damage or signal interruption. |
| Control Systems | Signal Routing |
Use Scenario: Selecting among multiple feedback sensor inputs (e.g., position, temperature, pressure) in closed-loop industrial controllers. IC Role / Device Role / Timing Role: Precision analog multiplexer with ±15V signal handling and <1.5µs switching for real-time loop updates. Use Value: Maintains loop stability by minimizing channel-to-channel RDS(ON) mismatch (<2%) and charge injection (<4pC). |
Use Scenario: Configurable routing of differential analog test signals in automated test equipment (ATE) stimulus/response paths. IC Role / Device Role / Timing Role: Bidirectional differential switch supporting both stimulus injection and response capture on shared traces. Use Value: Eliminates need for separate mux/demux ICs - reduces BOM count and PCB area in modular test platforms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar differential analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DG509ACJ+ | Higher typical off-leakage (5nA vs. 1pA), no fault-tolerance guarantee, same 16-pin DIP footprint | Not suitable for designs requiring <100nV fault-induced error or indefinite 120V AC survival | Select only where cost sensitivity outweighs leakage-critical performance and fault resilience |
| MAX359EPE+ | Same pinout and function but rated for 0°C to +70°C only; identical leakage and RDS(ON) specs | Limited to commercial-temperature applications; not qualified for extended industrial (-40°C to +85°C) operation | Choose MAX329EPE for designs requiring full industrial temperature range compliance |
Compared with DG509ACJ+ and MAX359EPE+, the MAX329EPE uniquely combines extended temperature rating (–40°C to +85°C), guaranteed 1pA leakage, and validated 120V AC fault tolerance - making it the only option for high-reliability, precision multiplexing in deployed industrial and aerospace systems.
Availability
MAX329EPE is available at Aetrix Electronics and suitable for data-acquisition systems, aircraft heads-up displays, and industrial control systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX329EPE 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 MAX329EPE belongs to Maxim's ultra-low-leakage analog multiplexer product line, engineered specifically for precision signal routing in fault-prone, high-impedance measurement systems where leakage-induced errors must be minimized.
FAQ
What is the maximum continuous supply voltage range supported by the MAX329EPE?
The MAX329EPE operates continuously with dual supplies ranging from ±5V to ±18V, including unbalanced configurations such as +12V/–5V. Absolute maximum ratings allow V+ up to +44V referenced to V−, but sustained operation outside the ±5V to ±18V range may degrade parametric performance or reliability. The MAX329EPE is specified and tested across its full operating range to ensure consistent leakage, on-resistance, and switching behavior.
Does the MAX329EPE require external protection diodes for fault tolerance?
No, the MAX329EPE does not require external protection diodes. Its internal structure inherently limits input voltage to approximately ±15.7V when powered from ±15V supplies. When used with external 40kΩ resistors, the MAX329EPE forms a fully fault-tolerant multiplexer capable of withstanding indefinite 110V AC faults - a capability confirmed in Maxim's Figure 4 application circuit and validated across the –40°C to +85°C temperature range for MAX329EPE.
How many differential channels does the MAX329EPE support, and how are they selected?
The MAX329EPE supports four differential analog switch pairs (S1A/S1B through S4A/S4B), selected via two binary address inputs (A0, A1). With EN high, A1/A0 = 00 selects S1A/S1B, 01 selects S2A/S2B, 10 selects S3A/S3B, and 11 selects S4A/S4B. This 2-of-8 configuration enables true differential signal routing without common-mode distortion - a core functional distinction from the single-ended MAX328EPE and central to the MAX329EPE's role in noise-immune measurement paths.
What is the guaranteed maximum off-leakage current for MAX329EPE over its full operating temperature range?
The MAX329EPE guarantees drain and source off-leakage currents of ≤±10nA over its full –40°C to +85°C operating range, as verified by 100% production testing at maximum rated temperature. At +25°C, typical off-leakage is 1pA - three orders of magnitude lower - enabling sub-40nV error with 40kΩ series resistors. This leakage specification is explicitly confirmed in the "Overtemperature" electrical characteristics table for MAX329C/E grade parts, which includes MAX329EPE.
Is the MAX329EPE pin-compatible with the DG509 multiplexer?
Yes, the MAX329EPE is pin-for-pin compatible with the DG509 in 16-pin DIP packages, as stated in the datasheet's General Description and Pin Configurations sections. Both devices share identical pin functions for A0, A1, EN, V+, V−, GND, DA, DB, and all SxA/SxB terminals. However, the MAX329EPE improves upon the DG509 with lower leakage, better RDS(ON) matching, and integrated fault tolerance - requiring no PCB layout changes when upgrading legacy DG509-based designs.
MAX329EPE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Switch Circuit:
- SP4T
- Multiplexer/Demultiplexer Circuit:
- 4:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 3.5kOhm
- Channel-to-Channel Matching (ΔRon):
- 70Ohm
- Voltage - Supply, Single (V+):
- 10V ~ 30V
- Voltage - Supply, Dual (V±):
- ±5V ~ 18V
- Switch Time (Ton, Toff) (Max):
- 1.5µs, 1µs
- -3db Bandwidth:
- -
- Charge Injection:
- 2pC
- Channel Capacitance (CS(off), CD(off)):
- 1.8pF, 4pF
- Current - Leakage (IS(off)) (Max):
- 10pA
- Crosstalk:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 16-PDIP
MAX329EPE FAQ
1.How can I place an order for MAX329EPE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX329EPE 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 MAX329EPE reliable?
The price and inventory of MAX329EPE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX329EPE is usually 5 days.
3.What payment methods are accepted for MAX329EPE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX329EPE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX329EPE?
MAX329EPE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX329EPE 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 MAX329EPE?
For technical support, including MAX329EPE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX329EPE requirements.
6.How does Aetrix verify that MAX329EPE is sourced from the original manufacturer or authorized distributors?
All MAX329EPE 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 MAX329EPE meets industry standards.
7.What is the process for return or replacement of MAX329EPE?
All MAX329EPE units undergo pre-shipment inspection (PSI). If there is an issue with MAX329EPE, 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 MAX329EPE part is unused and in its original packaging.
Return procedure for MAX329EPE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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