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Analog Devices Inc./Maxim Integrated MAX4780ETE+T
- Part No.:
- MAX4780ETE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
MAX4780ETE+T.pdf
- Description:
- IC SWITCH SPDT X 4 1OHM 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,292
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Product details
Overview
MAX4780ETE+T from Maxim Integrated is a low-voltage, quad 2:1 analog multiplexer IC with 0.7Ω on-resistance at +2.7V supply, 20ns turn-on time, and rail-to-rail signal handling from GND to V+. It operates from a single +1.6V to +4.2V supply and consumes less than 1µW quiescent power, making it suitable for battery-powered audio routing in cellular phones and portable data-acquisition systems.
For engineers reviewing the MAX4780ETE+T datasheet, MAX4780ETE+T pinout, MAX4780ETE+T application, or MAX4780ETE+T equivalent, key selection criteria include on-resistance flatness (0.1Ω), +1.8V CMOS logic compatibility, break-before-make timing (7ns typical), and thin QFN-EP package thermal performance for space-constrained portable designs.
Technical Context
The MAX4780ETE+T implements four independent bidirectional 2:1 analog switches using CMOS process technology, each with separate COM, NO, and NC terminals. Its control logic uses a single A0 address input and an active-low EN enable pin - unlike the MAX4784, it lacks A1 and uses EN instead of A1 for global switch enable.
Switching behavior is defined by truth table: when EN = low and A0 = low, COMx connects to NCx; when EN = low and A0 = high, COMx connects to NOx. All channels enter high-impedance state when EN = high, with <±10nA COM on-leakage and <±5nA NO/NC off-leakage over –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.6V to +4.2V - supports Li-ion battery voltage range without regulation. |
| On-Resistance (RON) | 0.7Ω at +2.7V - enables ≤100mA continuous current per channel with <70mV drop. |
| RON Flatness | 0.1Ω at +2.7V - ensures consistent gain and THD across full signal swing (0–2.7V). |
| Turn-On/Off Time | tON = 20ns, tOFF = 8ns - supports >10MHz switching in high-speed data acquisition paths. |
| Off-Isolation | –67dB at 1MHz - suppresses crosstalk between active and inactive channels in multi-signal routing. |
| Logic Compatibility | +1.8V CMOS inputs - interfaces directly with 1.8V/3.3V microcontrollers without level shifters. |
| Leakage Current | ±10nA COM on-leakage - maintains accuracy in high-impedance sensor front-ends and precision ADC inputs. |
Pinout & Package
MAX4780ETE+T is housed in a 16-pin 3mm × 3mm thin QFN package with exposed pad (EP) internally connected to GND. The EP must be soldered to a large PCB ground plane for optimal thermal dissipation and noise immunity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A0) | Address Input | Selects NO or NC path per channel; CMOS-compatible, rail-to-rail tolerant up to +4.2V. |
| 2 (NC1) | Normally Closed Terminal | Default connection to COM1 when A0 = low; 0.7Ω RON path at +2.7V. |
| 3 (NO1) | Normally Open Terminal | Active connection to COM1 when A0 = high; matched RON and flatness vs. NC1. |
| 4 (COM1) | Analog Switch Common | Bidirectional I/O node; handles rail-to-rail analog signals (GND to V+) with <5pC charge injection. |
| 15 (EN) | Enable Input | Active-low global enable; high state forces all COM outputs into high-impedance mode. |
| 16 (V+) | Positive Supply | Single supply input; bypass with 0.1µF capacitor to GND minimizes switching noise coupling. |
| 8 (GND) | Ground Reference | Primary return path; connects internally to exposed pad for thermal and EMI control. |
Key Features
| Feature | Design Value |
|---|---|
| Low 0.7Ω on-resistance | Minimizes signal attenuation and distortion in audio and sensor signal paths at +2.7V operation. |
| 0.1Ω RON flatness | Ensures uniform channel gain across full analog input range, critical for precision instrumentation. |
| +1.8V CMOS logic compatibility | Eliminates need for external level shifters when interfacing with low-voltage microcontrollers. |
| 20ns/8ns switching speed | Enables fast channel reconfiguration in real-time signal routing applications like modem line switching. |
| Rail-to-rail analog signal handling | Supports full-supply-range signals without clipping, essential for battery-powered audio codecs. |
Applications
| Cellular Phone Audio Routing | Portable Data-Acquisition Front-End |
|---|---|
|
Use Scenario: Selecting between internal speaker, earpiece, and external headset in dual-mode GSM/WCDMA handsets. IC Role / Device Role / Timing Role: Quad 2:1 analog multiplexer routing audio paths under baseband processor control via A0/EN. Use Value: 0.7Ω RON preserves SNR in 32Ω headphone drive; 20ns switching avoids audible click/pop during mode transitions. |
Use Scenario: Multiplexing multiple sensor outputs (temperature, pressure, accelerometer) into a single SAR ADC input. IC Role / Device Role / Timing Role: Low-leakage analog switch enabling high-impedance sensor interface with <±10nA COM on-leakage. Use Value: 0.1Ω RON flatness maintains measurement linearity across 0–2.7V input range; <5pC charge injection prevents ADC code errors. |
| Battery-Powered Modem Line Switching | PCMCIA Card Signal Multiplexing |
|
Use Scenario: Routing analog line signals between V.92/V.34 modems and RJ-11 telephone interface in portable terminals. IC Role / Device Role / Timing Role: High-isolation (–67dB) analog switch isolating active and standby line paths during protocol negotiation. Use Value: –95dB crosstalk prevents interference between simultaneous voice/data channels; 123MHz bandwidth supports V.92 upstream signaling. |
Use Scenario: Sharing analog audio/video lines between PCMCIA card slots and host controller in industrial laptops. IC Role / Device Role / Timing Role: Quad-channel signal router enabling hot-plug detection and dynamic resource allocation across two card slots. Use Value: Single +3.3V supply operation matches PCMCIA bus voltage; thin QFN-EP package fits tight 1.2mm board height constraints. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad 2:1 analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4784ETE+T | Replaces EN with A1 input; adds second address bit for independent channel control; same RON, package, and specs. | Required where per-channel switching (not group-select) is needed; not drop-in compatible due to EN/A1 pin swap. | Select MAX4784ETE+T only if discrete control of each 2:1 pair is required; MAX4780ETE+T remains optimal for synchronized quad routing. |
| TMUX1574RTER | Lower RON (0.5Ω @ 3.3V), but higher supply min (1.8V); no NC terminals; 1.8V–5.5V range; 16-QFN same footprint. | Lacks NC path - supports only NO/COM configuration; unsuitable for fail-safe or default-path applications requiring NC. | Choose TMUX1574RTER only for pure NO/COM routing with tighter RON tolerance; MAX4780ETE+T retains NC functionality for redundancy-critical designs. |
Compared with MAX4784ETE+T and TMUX1574RTER, the MAX4780ETE+T uniquely combines EN-based global disable, NC/NO dual-path topology, and guaranteed 0.1Ω RON flatness at +2.7V - making it the preferred choice for battery-powered systems requiring default-path safety and minimal signal distortion.
Availability
MAX4780ETE+T is available at Aetrix Electronics and suitable for cellular phone audio routing, portable data-acquisition front-ends, and battery-powered modem line switching requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX4780ETE+T 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 consumer applications.
The MAX4780ETE+T belongs to Maxim's low-voltage analog switch product line, designed specifically for ultra-low-power, rail-to-rail signal routing in space- and energy-constrained portable electronics.
FAQ
What is the maximum continuous current rating per channel for MAX4780ETE+T?
The MAX4780ETE+T supports ±300mA continuous current per COM, NO, or NC terminal, verified under absolute maximum ratings. At +2.7V supply and 0.7Ω on-resistance, this allows ≤210mV voltage drop at 300mA - sufficient for driving 8Ω or 32Ω audio loads without external amplification. Derating applies above +70°C ambient per the 14.7mW/°C thermal specification.
Does MAX4780ETE+T support rail-to-rail analog signals with minimal distortion?
Yes, the MAX4780ETE+T passes analog signals from GND to V+ with <0.1Ω on-resistance flatness at +2.7V, ensuring consistent gain across the full voltage range. Total harmonic distortion is specified at 0.008% (20Hz–20kHz, 2VP-P, 32Ω load), and charge injection is limited to 5pC - both critical for high-fidelity audio and precision sensor signal integrity in the MAX4780ETE+T.
Can MAX4780ETE+T be used with a 1.8V supply, and what are the trade-offs?
Yes, the MAX4780ETE+T operates down to +1.6V, and at +1.8V supply delivers 2Ω typical on-resistance and 25ns/10ns turn-on/turn-off times. While RON increases versus +2.7V operation, leakage remains <±5nA, and logic inputs retain +1.0V VIH compatibility. This makes the MAX4780ETE+T viable for ultra-low-power modes in devices like hearing aids or wearables where supply headroom is constrained.
How does the EN pin function in MAX4780ETE+T, and what happens when it is high?
The EN pin on the MAX4780ETE+T is an active-low enable. When pulled high (≥VIH = +1.4V at +2.7V supply), all four COM outputs enter high-impedance state regardless of A0 state, with COM on-leakage limited to ±10nA. This feature allows system-level power gating and safe signal isolation - a key distinction from the MAX4784ETE+T, which replaces EN with A1 and lacks global disable capability in the MAX4780ETE+T.
Is the exposed pad (EP) on MAX4780ETE+T electrically functional, and how should it be connected?
The exposed pad on the MAX4780ETE+T is internally connected to GND and is not intended as an electrical signal node. It must be soldered to a large PCB ground plane to achieve rated thermal performance (1176.5mW at +70°C) and reduce EMI susceptibility. Leaving the EP unconnected degrades junction temperature rise by >20°C under full load - a critical layout requirement explicitly documented for the MAX4780ETE+T in Maxim's package guidelines.
MAX4780ETE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 1Ohm
- Channel-to-Channel Matching (ΔRon):
- 100mOhm
- Voltage - Supply, Single (V+):
- 1.6V ~ 4.2V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 25ns, 10ns
- -3db Bandwidth:
- 123MHz
- Charge Injection:
- 5pC
- Channel Capacitance (CS(off), CD(off)):
- 33pF, 60pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -95dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (3x3)
MAX4780ETE+T FAQ
1.How can I place an order for MAX4780ETE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4780ETE+T 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 MAX4780ETE+T reliable?
The price and inventory of MAX4780ETE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4780ETE+T is usually 5 days.
3.What payment methods are accepted for MAX4780ETE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4780ETE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4780ETE+T?
MAX4780ETE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4780ETE+T 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 MAX4780ETE+T?
For technical support, including MAX4780ETE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4780ETE+T requirements.
6.How does Aetrix verify that MAX4780ETE+T is sourced from the original manufacturer or authorized distributors?
All MAX4780ETE+T 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 MAX4780ETE+T meets industry standards.
7.What is the process for return or replacement of MAX4780ETE+T?
All MAX4780ETE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4780ETE+T, 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 MAX4780ETE+T part is unused and in its original packaging.
Return procedure for MAX4780ETE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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