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Analog Devices Inc./Maxim Integrated MAX4738EBE-T
- Part No.:
- MAX4738EBE-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-WFBGA, CSPBGA
- Datasheet:
-
MAX4738EBE-T.pdf
- Description:
- IC SWITCH SPST-NCX4 3OHM 16UCSP
- Quantity:
- Payment:
- Shipping:
Inventory:7,350
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Product details
Overview
The MAX4738EBE-T from Maxim Integrated is a quad single-pole/single-throw (SPST) analog switch with four normally closed (NC) channels, operating from a single +1.8V to +5.5V supply. It delivers 4.5Ω max on-resistance at +3V, <40ns turn-off time at +2.7V, and −80dB crosstalk at 10MHz, targeting USB 1.1 signal routing and low-voltage audio switching in portable equipment.
For engineers reviewing the MAX4738EBE-T datasheet, MAX4738EBE-T pinout, MAX4738EBE-T application, or MAX4738EBE-T equivalent, this page provides verified electrical specs, UCSP-16 package layout, real-world USB/audio use cases, and two validated alternative parts for design flexibility.
Technical Context
The MAX4738EBE-T implements CMOS-based SPST switching with rail-to-rail analog signal handling (0V to V+) and +1.8V logic-compatible digital inputs. Its four NC switches are independently controlled by IN1–IN4, each exhibiting matched on-resistance (≤0.4Ω max at +3V) and flatness (≤1.2Ω max), enabling precise signal path consistency across channels.
It features break-before-make timing only in MAX4739-not MAX4738-so MAX4738EBE-T supports simultaneous channel switching without intentional dead time. All dynamic parameters-including 2ns max differential skew and >300MHz −3dB bandwidth-are specified and tested at +25°C and full temperature range (−40°C to +85°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (max) | 4.5Ω at +3V supply - ensures minimal voltage drop and power loss in low-voltage signal paths |
| RON Matching (max) | 0.4Ω between channels at +3V - enables accurate multi-channel gain/phase matching in audio routing |
| Turn-Off Time (max) | 40ns at +2.7V - supports fast channel reconfiguration in USB 1.1 (12Mbps) data switching |
| Crosstalk (at 10MHz) | −80dB - prevents audible interference between adjacent audio channels or USB D+/D− lines |
| Supply Voltage Range | +1.8V to +5.5V - allows direct integration into Li-ion battery-powered systems (2.7–4.2V) and 3.3V/5V logic domains |
| Leakage Current (max) | ±1nA at +25°C - preserves signal integrity in high-impedance sample-and-hold or sensor front-end circuits |
| Bandwidth (−3dB) | >300MHz - maintains fidelity of full-speed USB signals and wideband audio waveforms up to 20kHz+ with margin |
Pinout & Package
The MAX4738EBE-T is housed in a 16-bump UCSP (Ultra Compact Silicon Package) measuring 2mm × 2mm with 0.5mm bump pitch. This chip-scale package minimizes PCB area while maintaining thermal performance (659mW max power dissipation at +70°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1–IN4 | Digital control input | CMOS-compatible logic inputs accepting 0V/+V+ levels; drive NC switches open (OFF) when HIGH |
| COM1–COM4 | Analog common terminal | Bidirectional node connected to NC output when switch is active; handles rail-to-rail signals (0V to V+) |
| NC1–NC4 | Analog normally closed terminal | Connected to COMx when INx = LOW; disconnected when INx = HIGH - defines default-closed signal path |
| V+ | Positive analog supply | Single supply input (1.8V–5.5V); powers analog core and internal level shifters for logic interface |
| GND | Digital/analog ground | Common reference for all analog signals and digital inputs; requires low-impedance connection to minimize noise |
Key Features
| Feature | Design Value |
|---|---|
| USB 1.1 signal switching compliance | Validated for 12Mbps data rate with <2ns propagation delay and <0.5ns skew change - meets USB full-speed timing budget |
| Low on-channel capacitance | 15pF typical - reduces loading on high-frequency sources and preserves rise/fall times in fast-switching applications |
| Rail-to-rail signal handling | Supports analog signals from GND to V+ - eliminates need for external level-shifting in battery-powered audio codecs |
| +1.8V logic compatibility | VIH = 1.4V min / VIL = 0.5V max at +2.7V supply - enables direct interfacing with ultra-low-power microcontrollers |
| High off-isolation | −55dB at 10MHz - suppresses coupling between inactive channels in multi-source audio mixers or multiplexed sensor arrays |
Applications
| USB 1.1 Data Switching | Portable Audio Routing |
|---|---|
Use Scenario: Selecting between multiple USB upstream ports in a USB hub IC or OTG controller. IC Role / Device Role / Timing Role: Quad NC switch isolates unused D+/D− pairs while routing active signals with minimal insertion loss. Use Value: 4.5Ω RON and >300MHz bandwidth preserve USB eye diagram integrity at 12Mbps; −80dB crosstalk prevents D+–D− coupling. |
Use Scenario: Dynamic routing of stereo line-in, microphone, and headset signals in smartphones or Bluetooth headsets. IC Role / Device Role / Timing Role: Four independent NC paths enable hardware-mute capability and flexible analog signal path selection. Use Value: Rail-to-rail operation supports 0–3.3V audio signals; <0.5nA leakage avoids DC offset in high-Z electret mic bias networks. |
| Low-Voltage Data Acquisition | Sample-and-Hold Circuits |
Use Scenario: Multiplexing sensor outputs (e.g., thermistors, RTDs) into a 12-bit SAR ADC in handheld test equipment. IC Role / Device Role / Timing Role: Low-RON, matched channels ensure consistent gain scaling across input channels during sequential sampling. Use Value: 0.4Ω RON match limits channel-to-channel gain error to <0.1% at 1kΩ source impedance - critical for precision measurement. |
Use Scenario: Isolating hold capacitor from input source during acquisition phase in precision analog front-ends. IC Role / Device Role / Timing Role: NC switch connects capacitor to input during sampling; opens rapidly (<40ns tOFF) to freeze voltage. Use Value: 15pF on-capacitance minimizes charge injection (<5pC), reducing hold-step error in sub-12-bit systems. |
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 |
|---|---|---|---|
| MAX4737EBE-T | Four NO (normally open) switches vs. MAX4738EBE-T's four NC - complementary logic polarity and default state | Suitable where default-open signal path is required (e.g., power-gated sensor interfaces) | Select MAX4737EBE-T when system requires de-energized default state; verify control logic inversion in firmware |
| TS5A3157DBVR | Lower RON (0.75Ω typ at 3V) but higher leakage (100nA max) and no guaranteed 1.8V logic support | Better for low-RON priority in 3.3V-only systems; unsuitable for battery-voltage tracking below 2.3V | Choose TS5A3157DBVR only if supply is stable ≥2.5V and leakage-sensitive circuits (e.g., pH sensors) are absent |
Compared with MAX4738EBE-T, MAX4737EBE-T offers identical package, timing, and bandwidth but inverted default state, while TS5A3157DBVR trades leakage and voltage flexibility for lower on-resistance - requiring careful validation in low-voltage or high-impedance designs.
Availability
MAX4738EBE-T is available at Aetrix Electronics and suitable for USB 1.1 interface modules, portable audio subsystems, and low-voltage data-acquisition systems requiring stable component supply across industrial temperature ranges.
Supply support for MAX4738EBE-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) designs precision analog, mixed-signal, and power-management ICs for demanding industrial, automotive, and communications applications.
The MAX4737/MAX4738/MAX4739 family was engineered specifically for low-voltage, high-fidelity analog signal routing in USB and audio systems - emphasizing low RON, low distortion, and compact packaging.
FAQ
What is the default switch state of MAX4738EBE-T?
The MAX4738EBE-T features four normally closed (NC) analog switches. When all IN1–IN4 inputs are held LOW (≤0.5V), the COMx–NCx paths are conductive. Driving any INx HIGH (≥1.4V at +2.7V supply) opens that channel. This default-closed behavior is intrinsic to the MAX4738EBE-T silicon design and differs from the NO configuration of MAX4737EBE-T.
Does MAX4738EBE-T support true 1.8V logic-level inputs?
Yes, MAX4738EBE-T supports +1.8V logic compatibility: VIH is guaranteed ≥1.4V and VIL ≤0.5V when V+ = +2.7V to +3.6V. At lower supplies (e.g., +1.8V), logic thresholds scale accordingly (VIH ≈ 0.7×V+, VIL ≈ 0.28×V+), enabling direct interface with 1.8V microcontrollers without level shifters - confirmed in the device's Electrical Characteristics table.
Can MAX4738EBE-T handle analog signals beyond the supply rails?
No, MAX4738EBE-T does not support overvoltage-tolerant operation. Its absolute maximum ratings specify COM_, NO_, and NC_ voltages must stay within −0.3V to (V+ + 0.3V). Signals exceeding V+ or dropping below GND will forward-bias internal ESD diodes, risking damage or increased leakage. Always constrain analog inputs to the 0V–V+ range for reliable operation.
What is the thermal performance of the UCSP-16 package in MAX4738EBE-T?
The MAX4738EBE-T in 16-bump UCSP has a thermal derating factor of 8.3mW/°C above +70°C, with a maximum continuous power dissipation of 659mW at +70°C. Its 2mm × 2mm footprint and copper bump interconnect provide efficient heat transfer to the PCB, making it suitable for space-constrained, moderate-power analog switching - validated per Maxim's package reliability testing for UCSP construction.
Is break-before-make timing guaranteed for MAX4738EBE-T?
No, break-before-make timing is explicitly specified only for MAX4739 (tBBM = 1ns max). The MAX4738EBE-T datasheet omits tBBM characterization and functional diagrams confirm simultaneous switching behavior. Therefore, designers must assume overlapping conduction during state transitions - critical for avoiding short-circuited signal paths in analog mux applications.
MAX4738EBE-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Switch Circuit:
- SPST - NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 3Ohm
- Channel-to-Channel Matching (ΔRon):
- 100mOhm
- Voltage - Supply, Single (V+):
- 1.8V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 80ns, 40ns
- -3db Bandwidth:
- 300MHz
- Charge Injection:
- 5pC
- Channel Capacitance (CS(off), CD(off)):
- 9pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -80dB @ 10MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-UCSP (2.02x2.02)
MAX4738EBE-T FAQ
1.How can I place an order for MAX4738EBE-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4738EBE-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 MAX4738EBE-T reliable?
The price and inventory of MAX4738EBE-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4738EBE-T is usually 5 days.
3.What payment methods are accepted for MAX4738EBE-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4738EBE-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4738EBE-T?
MAX4738EBE-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4738EBE-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 MAX4738EBE-T?
For technical support, including MAX4738EBE-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4738EBE-T requirements.
6.How does Aetrix verify that MAX4738EBE-T is sourced from the original manufacturer or authorized distributors?
All MAX4738EBE-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 MAX4738EBE-T meets industry standards.
7.What is the process for return or replacement of MAX4738EBE-T?
All MAX4738EBE-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4738EBE-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 MAX4738EBE-T part is unused and in its original packaging.
Return procedure for MAX4738EBE-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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