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Analog Devices Inc./Maxim Integrated MAX4854HETE+
- Part No.:
- MAX4854HETE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
MAX4854HETE+.pdf
- Description:
- IC SWITCH SPST-NOX4 9OHM 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:264
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Product details
Overview
MAX4854HETE+ from Maxim Integrated is a quad SPST analog switch with overvoltage-protected signal routing for USB 2.0 full-speed (12Mbps) data lines, featuring 7Ω on-resistance, 27.5pF on-capacitance, and 150MHz -3dB bandwidth. It operates from +2V to +5.5V, supports 1.8V logic inputs, and enters high-impedance mode when input signals exceed VCC - enabling robust D+/D− switching in portable USB interfaces.
For engineers reviewing the MAX4854HETE+ datasheet, MAX4854HETE+ pinout, MAX4854HETE+ application, or MAX4854HETE+ equivalent, this device is selected for high-bandwidth, rail-over tolerant signal switching where low charge injection (<8pC), sub-1ns skew, and ±10nA leakage at +85°C are critical in space-constrained USB host/peripheral designs.
Technical Context
The MAX4854HETE+ implements four independent CMOS SPST switches with active overvoltage protection: when any NO_ or COM_ voltage exceeds VCC by >0.5V, the affected switch disconnects and presents high impedance - preventing fault current propagation. Its bidirectional analog path supports both D+ and D− line routing without polarity constraints.
Switch control uses inverted logic for MAX4854H variant: INx = low enables connection between COMx and NOx; INx = high opens the switch. Input thresholds scale with VCC (e.g., VIH = 1.4V at VCC = 2.0V; 1.8V at VCC = 3.6–5.5V), enabling mixed-voltage system interfacing without level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | +2.0V to +5.5V - supports direct interface with 2.5V, 3.3V, and 5V logic/system rails. |
| On-Resistance | 7Ω (typ) at VCC = 3V - minimizes insertion loss and voltage drop across USB data paths. |
| -3dB Bandwidth | 150MHz - preserves signal integrity for USB 2.0 full-speed (12Mbps) eye diagrams. |
| On-Capacitance | 27.5pF - limits capacitive loading on high-speed differential pairs, reducing timing jitter. |
| Charge Injection | 8pC - ensures minimal transient glitch on COM node during switching, critical for precision data sampling. |
| Off-Isolation | -80dB at 100kHz - suppresses crosstalk between active and inactive USB channels. |
| Logic Compatibility | 1.8V-input compatible - allows direct drive from low-voltage microcontrollers without external buffers. |
Pinout & Package
MAX4854HETE+ is housed in a 16-pin thin QFN package (3mm × 3mm × 0.8mm) with exposed paddle (EP) that must be soldered to PCB ground for thermal and electrical performance. Pin 1 is marked with top-side ACD marking; EP connects internally to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 7, 10 (NO1–NO4) |
Normally Open Analog Terminal (MAX4854H) | Connects to COMx only when corresponding INx is logic-high; serves as D+/D− output node in USB switch configuration. |
| 2, 11 | No Connect | Internally unconnected; must remain floating or grounded per layout best practice - no functional role. |
| 3, 9, 13, 15 (IN2–IN4, IN1) |
Digital Control Input | Inverted logic: low = closed switch (COMx↔NOx); high = open. Tolerates up to +5.5V regardless of VCC. |
| 4, 8, 12, 16 (COM2–COM4, COM1) |
Common Analog Terminal | Bidirectional signal path node - accepts D+/D− inputs from USB transceiver or connector; routed to NOx when enabled. |
| 6 | GND | Reference for analog/switching paths and digital logic; requires low-inductance connection to system ground plane. |
| 14 | VCC | Single supply input; must be bypassed with 0.01µF ceramic capacitor placed ≤2mm from pin to minimize noise coupling. |
| EP | Exposed Thermal Paddle | Electrically connected to GND; mandatory solder attachment improves thermal dissipation and reduces ground bounce. |
Key Features
| Feature | Design Value |
|---|---|
| Overvoltage Protection | Automatic high-impedance state when NO_/COM_ > VCC + 0.5V - eliminates need for external clamping diodes in USB hot-plug scenarios. |
| USB 2.0 Full-Speed Support | Guaranteed <1ns channel-to-channel skew and 150MHz bandwidth - maintains signal fidelity for 12Mbps differential signaling without equalization. |
| Low Power Operation | 10µA max supply current at VCC = 5.5V - enables always-on USB detection in battery-powered devices with negligible quiescent drain. |
| Rail-to-Rail Analog Range | 0V to VCC continuous signal handling - supports full-swing USB data voltages (0–3.3V) without clipping or distortion. |
| Mixed-Voltage Logic Interface | 1.8V-compatible inputs with VCC-scalable thresholds - permits direct connection to 1.8V/2.5V/3.3V GPIOs without level-shifting circuitry. |
Applications
| USB Host Port Switching | Mobile Device Docking Interface |
|---|---|
|
Use Scenario: Routing D+/D− signals between internal USB controller and dual external ports (e.g., OTG + peripheral mode). IC Role / Device Role / Timing Role: Quad SPST switch managing bidirectional full-speed data paths with sub-1ns skew to preserve USB packet timing. Use Value: Enables dynamic port reconfiguration without signal degradation; overvoltage protection prevents damage during cable insertion/removal transients. |
Use Scenario: Isolating and selecting USB data lines between smartphone SoC and docking station peripherals (keyboard, display, storage). IC Role / Device Role / Timing Role: Signal-line protection switch providing rail-over tolerance and low on-capacitance to maintain 480Mbps eye opening. Use Value: Eliminates need for discrete ESD protection + passive switches; 27.5pF on-capacitance avoids bandwidth-limiting parasitic loading on high-speed traces. |
| Notebook Computer USB Multiplexer | Industrial USB Device Hub Controller |
|
Use Scenario: Sharing single USB PHY between multiple Type-A ports via software-controlled switching in ultrabook platforms. IC Role / Device Role / Timing Role: Low-RON analog switch ensuring minimal insertion loss (<0.1dB) and flat frequency response up to 150MHz. Use Value: Reduces BOM count vs. discrete MOSFET solutions; 7Ω RON prevents voltage droop on 3.3V data lines under 10mA load. |
Use Scenario: Protecting USB upstream/downstream connections in ruggedized industrial hubs exposed to EMI and supply rail instability. IC Role / Device Role / Timing Role: Fault-tolerant signal switch entering high-Z mode during overvoltage events (e.g., induced surges on long cables). Use Value: Prevents latch-up or damage to host controller ICs; -80dB off-isolation blocks noise coupling between isolated USB branches. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TS3USB30E | Lower 6Ω RON but no overvoltage protection; 1.8V logic not supported below VCC = 3.0V. | Lacks automatic high-Z response to rail-over conditions - requires external clamping for USB hot-plug safety. | Prefer TS3USB30E only in controlled environments with guaranteed signal compliance and no VCC margin risk. |
| ADG714BRUZ | Higher 4.5Ω RON but wider -40°C to +125°C range; no overvoltage protection or USB-optimized bandwidth. | Not characterized for USB 2.0 skew or 150MHz response - unsuitable for full-speed data integrity requirements. | Select ADG714BRUZ only for general-purpose low-voltage switching outside USB timing-critical paths. |
Compared with TS3USB30E and ADG714BRUZ, MAX4854HETE+ uniquely combines USB-qualified bandwidth, rail-over tolerance, and 1.8V logic compatibility - making it the only option among the three that satisfies simultaneous requirements for robustness, speed, and low-voltage interoperability in portable USB systems.
Availability
MAX4854HETE+ is available at Aetrix Electronics and suitable for USB host switching, high-bandwidth data multiplexing, and cellular phone interface design requiring stable component supply across automotive-grade temperature ranges (-40°C to +85°C).
Supply support for MAX4854HETE+ 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) designs precision analog, mixed-signal, and power management ICs for demanding industrial, communications, and consumer applications.
The MAX4854H series belongs to Maxim's high-speed analog switch product line, engineered specifically for fault-tolerant USB 2.0 signal routing with integrated overvoltage protection and minimal channel-to-channel skew.
FAQ
What is the logic polarity of the control inputs on MAX4854HETE+?
The MAX4854HETE+ uses inverted logic: a logic-low voltage on IN1–IN4 closes the corresponding switch (connecting COMx to NOx), while a logic-high opens it. This behavior is fixed for the MAX4854H variant; the MAX4854HL version reverses polarity. Input thresholds scale with VCC - e.g., VIH = 1.4V at VCC = 2.0V and 1.8V at VCC = 5.0V - ensuring reliable operation across supply voltages. The MAX4854HETE+ datasheet confirms this in the Pin Description and Truth Table sections.
Does MAX4854HETE+ support bidirectional analog signal flow?
Yes, MAX4854HETE+ supports fully bidirectional analog signal routing: COMx and NOx terminals are interchangeable as input or output nodes. This enables flexible USB D+/D− path configuration - for example, COM1 can accept data from a USB connector while NO1 drives the SoC PHY, or vice versa. The device's symmetric on-resistance (7Ω typ) and low charge injection (8pC) ensure consistent performance regardless of signal direction. This capability is explicitly stated in the Applications Information section of the MAX4854HETE+ datasheet.
How does the overvoltage protection function in MAX4854HETE+?
When any NO_ or COM_ pin voltage exceeds VCC by more than 0.5V, the affected switch automatically transitions to a high-impedance state - blocking signal feedthrough and preventing fault current. This occurs without external components or control intervention. The protection activates within 0.5–1.0µs (per Figure 1), and the device remains operational for signals within 0V to VCC. This feature is integral to MAX4854HETE+'s architecture and is validated across the full -40°C to +85°C range per Absolute Maximum Ratings and Electrical Characteristics tables.
What is the maximum signal frequency supported by MAX4854HETE+?
MAX4854HETE+ delivers a -3dB bandwidth of 150MHz, verified under standard test conditions (0dBm signal, RL = 50Ω, CL = 5pF). This supports clean transmission of USB 2.0 full-speed (12Mbps) data with preserved eye diagram integrity and <1ns channel skew. The bandwidth specification is guaranteed across temperature and supply voltage variations, and appears in the Electrical Characteristics table under "-3dB Bandwidth" with typical value 150MHz and no min/max spread - confirming consistent high-frequency performance for MAX4854HETE+.
Can MAX4854HETE+ be used with a 1.8V supply voltage?
No - MAX4854HETE+ requires a minimum supply voltage of +2.0V per its Absolute Maximum Ratings and Electrical Characteristics tables. While its digital inputs are 1.8V-logic compatible (VIH = 1.4V at VCC = 2.0V), the core analog switch circuitry does not operate reliably below VCC = 2.0V. Attempting to power MAX4854HETE+ at 1.8V may result in undefined on-resistance, increased leakage, or failure to enter high-Z mode during overvoltage events. The datasheet specifies VCC range strictly as +2.0V to +5.5V for all operating conditions.
MAX4854HETE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 9Ohm
- Channel-to-Channel Matching (ΔRon):
- 200mOhm
- Voltage - Supply, Single (V+):
- 2V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 60ns, 40ns
- -3db Bandwidth:
- 150MHz
- Charge Injection:
- 8pC
- Channel Capacitance (CS(off), CD(off)):
- 12pF
- Current - Leakage (IS(off)) (Max):
- 2nA
- Crosstalk:
- -95dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (3x3)
MAX4854HETE+ FAQ
1.How can I place an order for MAX4854HETE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4854HETE+ 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 MAX4854HETE+ reliable?
The price and inventory of MAX4854HETE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4854HETE+ is usually 5 days.
3.What payment methods are accepted for MAX4854HETE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4854HETE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4854HETE+?
MAX4854HETE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4854HETE+ 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 MAX4854HETE+?
For technical support, including MAX4854HETE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4854HETE+ requirements.
6.How does Aetrix verify that MAX4854HETE+ is sourced from the original manufacturer or authorized distributors?
All MAX4854HETE+ 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 MAX4854HETE+ meets industry standards.
7.What is the process for return or replacement of MAX4854HETE+?
All MAX4854HETE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4854HETE+, 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 MAX4854HETE+ part is unused and in its original packaging.
Return procedure for MAX4854HETE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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