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Analog Devices Inc./Maxim Integrated MAX4854HLETE
- Part No.:
- MAX4854HLETE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
MAX4854HLETE.pdf
- Description:
- IC SW SPSTX4 9OHM 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,521
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Product details
Overview
MAX4854HLETE from Maxim Integrated is a quad SPST analog switch with overvoltage protection, 7Ω on-resistance, 27.5pF on-capacitance, and 150MHz -3dB bandwidth, designed for USB 2.0 full-speed (12Mbps) D+/D- signal routing in portable electronics.
For engineers reviewing the MAX4854HLETE datasheet, MAX4854HLETE pinout, MAX4854HLETE application, or MAX4854HLETE equivalent, this device supports rail-to-rail analog signal switching beyond VCC, features 1.8V logic compatibility, low 10µA supply current, and operates across -40°C to +85°C in a 3mm × 3mm TQFN package.
Technical Context
The MAX4854HLETE implements four independent CMOS SPST switches with bidirectional signal paths and automatic high-impedance fail-safe behavior when input signals exceed VCC. Its architecture integrates internal clamping diodes and logic-level tolerant control inputs (VIH up to 5.5V), enabling mixed-voltage system interfacing without level shifters.
Each switch exhibits matched on-resistance (ΔRON ≤ 0.5Ω) and sub-1ns skew between channels, ensuring signal integrity for differential USB data pairs. The 27.5pF COM on-capacitance and 12pF NO off-capacitance minimize loading on high-speed lines while maintaining -95dB crosstalk at 1MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | +2V to +5.5V - supports direct interface with 2.5V, 3.3V, and 5V logic domains without external regulators. |
| On-Resistance | 7Ω (typ) - ensures minimal voltage drop and insertion loss for 12Mbps USB signals under 10mA load. |
| -3dB Bandwidth | 150MHz - preserves signal fidelity for USB 2.0 full-speed operation and other high-bandwidth data links. |
| On-Capacitance | 27.5pF (COM) - limits capacitive loading on source-side traces, critical for maintaining eye diagram integrity. |
| Logic Compatibility | 1.8V input threshold - enables direct drive from low-voltage microcontrollers without level translation. |
| Overvoltage Protection | Signal > VCC → High-Z - prevents fault current injection into downstream circuitry during hot-plug or ESD events. |
| Turn-On/Off Time | 30ns / 60ns (typ) - enables fast channel reconfiguration in dynamic USB multiplexing applications. |
Pinout & Package
MAX4854HLETE is housed in a 16-pin thin QFN (TQFN-EP) package measuring 3mm × 3mm × 0.8mm with exposed paddle for thermal and electrical grounding. Pin 1 is marked by top-side laser marking "ACX" per ordering information.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5, 7, 10 | NO1–NO4 | Normally open analog terminals - connect to D+, D-, or auxiliary data lines only when switch is enabled. |
| 2, 11 | N.C. | No connection - internally unconnected; must remain floating or grounded per layout best practice. |
| 3, 9, 12, 15 | IN1–IN4 | Digital control inputs - accept 0–5.5V logic; polarity inverted between MAX4854H and MAX4854HL variants. |
| 4, 8, 13, 16 | COM1–COM4 | Common analog terminals - serve as bidirectional signal ports for USB D+/D- or other data paths. |
| 6 | GND | Analog/digital ground reference - requires low-inductance connection to PCB ground plane. |
| 14 | VCC | Power supply input - must be bypassed with 0.01µF capacitor placed adjacent to pin. |
| EP | Exposed Paddle | Thermal and electrical ground - soldered directly to PCB ground plane for EMI suppression and thermal dissipation. |
Key Features
| Feature | Design Value |
|---|---|
| USB 2.0 Full-Speed Support | Guaranteed 12Mbps switching with <1ns inter-channel skew - maintains D+/D- timing alignment for reliable enumeration. |
| Rail-Exceeding Signal Handling | Automatic high-impedance mode when NO/COM exceeds VCC - eliminates need for external TVS or series resistors in USB port protection. |
| Low On-Capacitance | 27.5pF COM capacitance - reduces signal rise-time degradation and reflection on 90Ω differential USB traces. |
| Mixed-Voltage Logic Interface | 1.8V-compatible inputs accepting up to 5.5V - enables direct control from 1.8V FPGA I/O or 5V microcontroller GPIOs. |
| Ultra-Low Quiescent Current | 10µA typical ICC - minimizes battery drain in always-on USB detection circuits of handheld devices. |
Applications
| USB Port Multiplexing | High-Speed Data Routing |
|---|---|
Use Scenario: Switching USB D+/D- signals between host controller and dual peripheral ports (e.g., OTG-enabled smartphone). IC Role / Device Role / Timing Role: Quad SPST analog switch providing bidirectional, low-distortion path selection with sub-1ns skew between D+ and D- channels. Use Value: Enables single USB PHY to serve multiple connectors without signal integrity loss or timing violation during hot-swap events. | Use Scenario: Routing high-bandwidth sensor data (e.g., MIPI D-PHY lanes) in notebook computers with shared physical layer resources. IC Role / Device Role / Timing Role: Signal line protection switch isolating unused data paths while preserving 150MHz bandwidth and <0.04% THD. Use Value: Prevents crosstalk-induced bit errors and maintains eye opening margin in multi-lane serial interfaces. |
| Cellular Phone Baseband Switching | PDA Peripheral Expansion |
Use Scenario: Selecting between internal modem and external USB debug interface in LTE handsets during production test and field service modes. IC Role / Device Role / Timing Role: Overvoltage-protected analog switch handling ±50mA continuous current - withstands transient faults during cable insertion/removal. Use Value: Eliminates need for discrete protection components, reducing BOM count and PCB area in space-constrained RF modules. | Use Scenario: Enabling hot-pluggable SD card or Bluetooth module via shared USB-based interface in legacy PDAs. IC Role / Device Role / Timing Role: Low-leakage (±10nA off-state) SPST switch preventing standby current leakage across inactive peripherals. Use Value: Extends battery life by blocking parasitic discharge paths while maintaining fast (<60ns) enable/disable response for user-initiated expansion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TS3USB30E | Single 2-channel switch; 6Ω RON; 10pF COFF; no overvoltage protection above VCC | Designed for USB 2.0 switching only; lacks rail-exceeding fault tolerance | Prefer when board-level protection is already implemented and footprint allows dual-device solution |
| ADG732BRUZ | 32-channel SPST; 4Ω RON; 10pF COFF; no overvoltage protection; 1.8V–5.5V supply | Higher channel count but larger 5mm × 5mm TSSOP package; no integrated high-Z fail-safe | Choose for complex multi-signal routing where MAX4854HLETE's protection feature is redundant |
Compared with TS3USB30E and ADG732BRUZ, the MAX4854HLETE uniquely combines quad-channel integration, 7Ω on-resistance, 27.5pF on-capacitance, and automatic overvoltage-induced high-impedance mode - making it optimal for compact, robust USB 2.0 port switching where fault resilience and minimal board area are critical.
Availability
MAX4854HLETE is available at Aetrix Electronics and suitable for USB port multiplexing, high-speed data routing, cellular phone baseband switching, and PDA peripheral expansion requiring stable component supply across industrial temperature ranges.
Supply support for MAX4854HLETE 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 MAX4854HLETE belongs to Maxim's high-bandwidth analog switch product line, engineered specifically for fault-tolerant USB 2.0 signal routing and data path protection in portable and battery-powered systems.
FAQ
What is the maximum analog signal voltage the MAX4854HLETE can handle without damage?
The MAX4854HLETE supports analog signals from 0V to VCC on its NO_, COM_, and NC_ pins. If any analog signal exceeds VCC by more than 0.5V, the affected switch enters high-impedance mode to prevent feedthrough. Absolute maximum rating is -0.3V to +6.0V relative to GND, but sustained operation above VCC triggers protective shutdown. This behavior is intrinsic to the MAX4854HLETE design and does not require external circuitry.
Does the MAX4854HLETE support bidirectional signal flow?
Yes, the MAX4854HLETE supports fully bidirectional analog signal flow between COM_ and NO_ terminals. Its CMOS architecture imposes no directionality - signals may originate from either side without performance degradation. This is confirmed in the datasheet's "Analog Signal Levels" section and validated by identical RON, CON, and bandwidth specifications regardless of signal direction. The MAX4854HLETE leverages this for USB D+/D- line switching where data flows both upstream and downstream.
How does the logic polarity differ between MAX4854H and MAX4854HL variants, and which applies to MAX4854HLETE?
The MAX4854HLETE corresponds to the MAX4854HL variant, as indicated by top-mark "ACX" and ordering information. For MAX4854HL, a logic-high input (IN_) connects COM_ to NO_, whereas a logic-low opens the switch - opposite to MAX4854H. This polarity is fixed per part number and cannot be changed. All timing, bandwidth, and protection features remain identical between H and HL versions; only control logic sense differs. The MAX4854HLETE must be driven accordingly in firmware or hardware design.
Can the MAX4854HLETE be used in USB 2.0 High-Speed (480Mbps) applications?
No, the MAX4854HLETE is specified for USB 2.0 Full-Speed (12Mbps) and USB 1.1 operation only. Its 150MHz -3dB bandwidth and 27.5pF on-capacitance are insufficient for 480Mbps signaling, which requires >500MHz bandwidth and <5pF channel capacitance to maintain signal integrity. The datasheet explicitly states USB 2.0 Full Speed (12MB) compatibility - "MB" denotes megabytes, confirming 12Mbps. For High-Speed USB, a different switch such as MAX14532 or SN74CBTLV3245 is required. The MAX4854HLETE is not rated for 480Mbps use.
What is the recommended PCB layout practice for the exposed paddle (EP) of the MAX4854HLETE?
The exposed paddle (EP) of the MAX4854HLETE must be soldered directly to a solid copper ground plane on the PCB. Maxim specifies "CONNECT EXPOSED PADDLE TO PC BOARD GROUND" in the pin diagram. Use ≥4 thermal vias (0.3mm diameter) evenly distributed under the paddle, each connected to an internal or bottom-layer ground plane. Avoid routing traces or placing components beneath the paddle. This ensures optimal thermal dissipation (junction-to-board resistance <15°C/W) and EMI suppression - critical for maintaining low-noise performance in high-speed USB signal paths. Failure to properly ground EP degrades the MAX4854HLETE's overvoltage protection and bandwidth.
MAX4854HLETE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - Open
- 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)):
- 13pF
- Current - Leakage (IS(off)) (Max):
- 2nA
- Crosstalk:
- -95dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN-EP (3x3)
MAX4854HLETE FAQ
1.How can I place an order for MAX4854HLETE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4854HLETE 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 MAX4854HLETE reliable?
The price and inventory of MAX4854HLETE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4854HLETE is usually 5 days.
3.What payment methods are accepted for MAX4854HLETE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4854HLETE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4854HLETE?
MAX4854HLETE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4854HLETE 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 MAX4854HLETE?
For technical support, including MAX4854HLETE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4854HLETE requirements.
6.How does Aetrix verify that MAX4854HLETE is sourced from the original manufacturer or authorized distributors?
All MAX4854HLETE 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 MAX4854HLETE meets industry standards.
7.What is the process for return or replacement of MAX4854HLETE?
All MAX4854HLETE units undergo pre-shipment inspection (PSI). If there is an issue with MAX4854HLETE, 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 MAX4854HLETE part is unused and in its original packaging.
Return procedure for MAX4854HLETE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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