My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX328ETE+
- Part No.:
- MAX328ETE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-WQFN Exposed Pad
- Datasheet:
-
MAX328ETE+.pdf
- Description:
- IC MUX 8:1 3.5KOHM 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,396
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
The MAX328ETE+ from Maxim Integrated is a monolithic CMOS 1-of-8 single-ended analog multiplexer with ultra-low off-leakage (1pA typ at +25°C), 2.5kΩ on-resistance, and ±5V to ±18V dual-supply or 10V–30V single-supply operation. It features bidirectional signal routing, TTL/CMOS logic compatibility, rail-to-rail analog signal range, and fault-tolerant capability when used with external 40kΩ input resistors-enabling indefinite 110V AC fault survival in data-acquisition front-ends.
For engineers reviewing the MAX328ETE+ datasheet, MAX328ETE+ pinout, MAX328ETE+ application, or MAX328ETE+ equivalent, this device is selected for high-precision, low-error analog signal switching in systems requiring sub-40nV error budget, high source impedance interface, and industrial temperature stability (–40°C to +85°C) in a 16-pin TQFN-EP package.
Technical Context
The MAX328ETE+ implements a CMOS transmission-gate architecture with latchup-proof construction and break-before-make switching (0.2µs interval). Its address decoding uses three binary inputs (A0–A2) to select one of eight bidirectional analog channels (S1–S8) to the common drain D, controlled by an active-high EN pin.
It operates across unbalanced supply configurations (e.g., +12V/–5V) and maintains guaranteed leakage performance over its full –40°C to +85°C operating range, with 100% tested off-leakage at maximum temperature. Charge injection is limited to 4pC max, supporting precision sampling in high-resolution ADC interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | ±15V - supports rail-to-rail input/output swing with ±15V supplies, enabling direct interface to op-amps and ADCs without level-shifting. |
| On-Resistance (RDS(ON)) | 2.5kΩ typ - ensures minimal gain error and settling time impact when driving high-input-impedance loads like 1MΩ+ instrumentation amplifiers. |
| Off-Leakage Current | 1pA typ at +25°C - limits voltage error to <40nV with 40kΩ series resistors, critical for 16+ bit data acquisition accuracy. |
| Switching Time | 1.5µs max - enables multiplexing rates up to ~300kHz for multi-channel sensor readout without inter-channel crosstalk accumulation. |
| Supply Range | ±5V to ±18V dual or 10V–30V single - accommodates legacy industrial rails (+12V/–5V) and modern low-noise ±15V signal chains. |
| Enable Propagation Delay | tON(EN) = 1.5µs max - allows synchronized channel selection with microcontroller GPIO or FPGA control timing. |
| Charge Injection | 4pC max - reduces sampling pedestal error in switched-capacitor circuits and sample-and-hold stages. |
Pinout & Package
MAX328ETE+ is housed in a 16-pin TQFN-EP (3mm × 3mm, 0.5mm pitch) with exposed pad (EP) that must be connected to V+ for thermal and electrical integrity. The package supports reflow soldering per JEDEC J-STD-020 (lead-free, 260°C peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3 | V− | Negative supply rail input; required for dual-supply operation and defines lower analog signal limit. |
| 2, 4–7 | S1–S4 | Bidirectional analog input channels; connect to sensors, transducers, or signal sources. |
| 8 | D | Common bidirectional analog output/input node; connects to ADC input, op-amp buffer, or signal processor. |
| 9–12 | S8–S5 | Bidirectional analog input channels; continuation of S1–S4 set for full 1-of-8 selection. |
| 13 | A2 | MSB address input; controls channel selection with A1 and A0 per truth table. |
| 14 | A1 | Middle address input; decodes binary address for channel enable. |
| 15 | A0 | LSB address input; completes 3-bit selection of one of eight analog paths. |
| 16 | EN | Active-high enable; disables all switches (high-Z state) when low, reducing system power and crosstalk. |
| 11 | V+ | Positive supply rail input; powers internal logic and switch drivers; EP must connect here. |
| 12 | GND | Analog/digital reference ground; requires low-impedance connection to minimize noise coupling. |
| EP | Exposed Pad | Thermal and electrical tie to V+; mandatory for rated power dissipation (2666.7mW max) and ESD robustness. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low off-leakage (1pA typ) | Enables use with >1GΩ source impedances while maintaining sub-100nV offset error in precision measurement front-ends. |
| Bidirectional signal routing | Supports both multiplexer (S→D) and demultiplexer (D→S) configurations without external circuitry or polarity constraints. |
| Rail-to-rail analog signal range | Allows full utilization of ±15V supply headroom, eliminating clipping in high-dynamic-range sensor conditioning paths. |
| Pin-compatible with DG508/DG509 | Permits drop-in replacement in legacy designs without PCB revision, preserving layout and BOM continuity. |
| Fault-tolerant architecture | With external 40kΩ resistors, withstands indefinite 110V AC faults while maintaining signal integrity and component safety. |
Applications
| Industrial Data Acquisition | Aircraft Heads-Up Display (HUD) Signal Routing |
|---|---|
|
Use Scenario: Multiplexing outputs from 8 thermocouple or RTD sensor amplifiers into a single high-resolution ADC. IC Role / Device Role / Timing Role: Analog signal selector providing channel isolation, low-offset switching, and rail-to-rail signal handling before digitization. Use Value: 1pA leakage ensures ≤40nV added error with 40kΩ protection resistors, preserving 17-bit effective resolution over –40°C to +85°C. |
Use Scenario: Routing multiple video sync, brightness, and symbol overlay signals in avionics HUD control units. IC Role / Device Role / Timing Role: Bidirectional analog switch managing composite video path selection with sub-1.5µs transition for real-time display updates. Use Value: Break-before-make timing (0.2µs) prevents momentary short-circuits between independent video sources during switching. |
| Portable Precision Instrumentation | Control System I/O Conditioning |
|
Use Scenario: Battery-powered handheld multimeter selecting between voltage, current, and resistance measurement front-ends. IC Role / Device Role / Timing Role: Low-power analog mux enabling shared ADC resource across measurement modes with <1.9mW total dissipation at ±15V. Use Value: 2.5kΩ on-resistance and 4pC charge injection minimize settling time and pedestal error in auto-ranging architectures. |
Use Scenario: Isolating and routing analog feedback signals (e.g., motor current, temperature, position) in PLC analog I/O modules. IC Role / Device Role / Timing Role: Fault-protected signal router interfacing field sensors to isolated ADCs via 40kΩ series resistors. Use Value: Withstands 120V AC line faults indefinitely without damage, meeting IEC 61000-4-5 surge immunity requirements for industrial environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX358ETE+ | Same pinout and function but higher on-resistance (3.5kΩ max) and higher leakage (±10pA over temp); not rated for 120V AC fault tolerance. | Lower-cost option where 16-bit resolution and industrial fault immunity are not required. | Select MAX358ETE+ only if leakage <10pA and RDS(ON) <3.5kΩ meet system error budget; verify fault protection separately. |
| DG508DJ-E3 | Legacy bipolar process; 100nA typical off-leakage (100× higher), 100Ω on-resistance, no fault-tolerant design; requires external diodes for overvoltage protection. | Suitable for non-precision, low-impedance signal routing where speed (tTRANSITION = 0.5µs) outweighs leakage concerns. | Choose DG508DJ-E3 only for cost-sensitive, non-critical applications with buffered sources and no AC fault exposure. |
Compared with MAX328ETE+, MAX358ETE+ trades leakage and fault robustness for marginally lower cost, while DG508DJ-E3 offers faster switching but sacrifices 100× leakage performance and requires external protection-making MAX328ETE+ the sole choice for precision, high-impedance, fault-prone industrial signal routing.
Availability
MAX328ETE+ is available at Aetrix Electronics and suitable for industrial data acquisition, avionics signal routing, and portable instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX328ETE+ 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, automotive, and communications markets.
The MAX328ETE+ belongs to Maxim's ultra-low-leakage analog multiplexer product line, designed specifically for precision data-acquisition systems where signal integrity, fault resilience, and wide supply flexibility are critical.
FAQ
What is the maximum continuous supply voltage rating for MAX328ETE+?
The MAX328ETE+ has an absolute maximum V+ rating of +44V referenced to V−, and V− may go as low as –25V relative to GND. For continuous operation, it supports ±5V to ±18V dual supplies or 10V–30V single supplies. Exceeding ±18V or 30V risks permanent damage, even if within absolute max ratings for brief stress conditions.
Does MAX328ETE+ require external protection diodes for 120V AC fault tolerance?
No, the MAX328ETE+ does not require external protection diodes for 120V AC fault tolerance. Its internal diode structure clamps input voltages to ±15.7V with ±15V supplies. When paired with 39kΩ or higher series resistors (e.g., 40kΩ 1/2W), the MAX328ETE+ withstands indefinite 120V AC faults without damage or performance degradation.
Is MAX328ETE+ pin-compatible with the DG508 in existing PCB layouts?
Yes, MAX328ETE+ is explicitly specified as a pin-for-pin replacement for the DG508 in standard 16-pin DIP and SO packages. While the MAX328ETE+ uses a TQFN-EP package, its pin numbering and signal mapping (A0–A2, EN, S1–S8, D, V+, V−, GND) match the DG508 functional pinout-enabling direct substitution in new designs using the TQFN footprint.
What is the guaranteed off-leakage current for MAX328ETE+ over its full temperature range?
The MAX328ETE+ guarantees off-leakage current of ±5nA maximum over its full –40°C to +85°C operating range, as verified by 100% production testing at +85°C. At +25°C, typical off-leakage is 1pA, rising to ≤5nA at temperature extremes-critical for maintaining sub-200nV error with 40kΩ series resistors in precision systems.
Can MAX328ETE+ operate with unbalanced supplies such as +12V and –5V?
Yes, MAX328ETE+ is fully characterized for unbalanced supply operation including +12V/–5V and +5V/–15V configurations. Its CMOS switch architecture and rail-to-rail analog signal range ensure consistent on-resistance, leakage, and switching performance regardless of supply asymmetry-making it ideal for mixed-rail industrial signal chains.
MAX328ETE+ 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):
- 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, 8pF
- Current - Leakage (IS(off)) (Max):
- 10pA
- Crosstalk:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (5x5)
MAX328ETE+ FAQ
1.How can I place an order for MAX328ETE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX328ETE+ 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 MAX328ETE+ reliable?
The price and inventory of MAX328ETE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX328ETE+ is usually 5 days.
3.What payment methods are accepted for MAX328ETE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX328ETE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX328ETE+?
MAX328ETE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX328ETE+ 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 MAX328ETE+?
For technical support, including MAX328ETE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX328ETE+ requirements.
6.How does Aetrix verify that MAX328ETE+ is sourced from the original manufacturer or authorized distributors?
All MAX328ETE+ 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 MAX328ETE+ meets industry standards.
7.What is the process for return or replacement of MAX328ETE+?
All MAX328ETE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX328ETE+, 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 MAX328ETE+ part is unused and in its original packaging.
Return procedure for MAX328ETE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX328ETE+ Tags
-
SN74LVC1G3157DBVR
Texas Instruments
-
SN74LVC1G66DBVR
Texas Instruments
-
SN74LVC1G66DCKR
Texas Instruments
-
SN74LVC1G3157DSFR
Texas Instruments
-
1P1G3157QDCKRQ1
Texas Instruments
-
SN74LVC2G66DCUR
Texas Instruments
-
SN74LV4052APWR
Texas Instruments
-
74HC4051D,653
Nexperia USA Inc.
-
SN74LV4051APWR
Texas Instruments
-
CD74HC4052PWR
Texas Instruments
-
CD74HC4051PWR
Texas Instruments
-
TS5A3166DBVR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
