My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX4744ELB+TG104
- Part No.:
- MAX4744ELB+TG104
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog Switches - Special Purpose
- Package:
- -
- Datasheet:
-
MAX4744ELB+TG104.pdf
- Description:
- INTEGRATED CIRCUIT
- Quantity:
- Payment:
- Shipping:
Inventory:1,838
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX4744ELB+TG104 from Maxim Integrated is a dual SPDT audio analog switch optimized for clickless speaker and signal routing in portable audio systems. It supports negative signal swing down to VCC − 5.5V, features 0.6Ω typical on-resistance, 0.1Ω channel-to-channel matching, and operates from a single +1.8V to +5.5V supply. It is used in cellular phones and MP3 players for distortion-free audio path switching.
For engineers reviewing the MAX4744ELB+TG104 datasheet, MAX4744ELB+TG104 pinout, MAX4744ELB+TG104 application, or MAX4744ELB+TG104 equivalent, key selection criteria include its negative rail capability (VCC − 5.5V), internal shunt resistors for pop suppression, break-before-make timing, THD of 0.01%, and µDFN-10 package compatibility with space-constrained handheld designs.
Technical Context
The MAX4744ELB+TG104 implements two independent SPDT switches controlled by separate CB1/CB2 logic inputs, enabling per-channel routing decisions without shared enable logic. Its BiCMOS process delivers low on-resistance flatness (0.55Ω max) across the full analog signal range (VCC − 5.5V to VCC) and tight channel matching (0.1Ω max).
It integrates shunt resistors on both NO1/NC1 and NO2/NC2 terminals to discharge floating node capacitance during state transitions-reducing audible click-and-pop in speaker paths. Break-before-make delay is specified at 20ns, and COM_ terminals tolerate signals down to VCC − 6V under normal operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 0.6Ω typical - ensures minimal insertion loss and thermal drift in audio signal paths |
| On-Resistance Matching (ΔRON) | 0.1Ω max - maintains balanced stereo channel performance and minimizes crosstalk-induced imaging errors |
| Analog Signal Range | VCC − 5.5V to VCC - enables true bipolar audio handling including sub-ground signals without clipping or distortion |
| Total Harmonic Distortion (THD) | 0.01% typical (20Hz–20kHz) - preserves high-fidelity audio integrity in consumer playback devices |
| Off-Isolation | −68dB typical at 100kHz - prevents leakage between inactive channels, critical for multi-source audio muxing |
| Supply Voltage Range | +1.8V to +5.5V - supports direct interfacing with Li-ion battery rails and mixed-voltage SoC I/O domains |
| Turn-On/Off Time | 55ns / 36ns typical - enables fast switching during dynamic audio source selection without transient artifacts |
Pinout & Package
MAX4744ELB+TG104 is housed in a 10-pin µDFN package (2mm × 2mm × 0.8mm, pkg code L1022-1), with exposed pad for thermal dissipation and space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 CB1 | Digital control input for Switch 1 | Independent logic input selecting NC1 or NO1 connection to COM1; enables asymmetric channel control |
| 2 NO1 | Switch 1 normally open terminal | Audio path endpoint disconnected when unselected; internal shunt resistor discharges residual voltage to suppress pop |
| 3 GND | Ground reference | Common return for analog and digital domains; must be low-impedance for THD and PSRR performance |
| 4 NO2 | Switch 2 normally open terminal | Second independent audio path endpoint; shares same shunt architecture as NO1 for matched pop suppression |
| 5 CB2 | Digital control input for Switch 2 | Independent logic input selecting NC2 or NO2 connection to COM2; allows fully decoupled dual-channel routing |
| 6 COM2 | Switch 2 common terminal | Primary audio output node for Switch 2; bidirectional-supports source or load connection |
| 7 NC2 | Switch 2 normally closed terminal | Default audio path endpoint; internal shunt resistor ensures rapid discharge when switched away |
| 8 VCC | Positive supply | Single power rail powering analog core and digital interface; accepts 1.8V–5.5V with rail-to-rail logic tolerance |
| 9 NC1 | Switch 1 normally closed terminal | Default audio path endpoint for Switch 1; matched RON and shunt behavior to NC2 for stereo symmetry |
| 10 COM1 | Switch 1 common terminal | Primary audio output node for Switch 1; electrically identical to COM2 for parallel dual-path implementation |
Key Features
| Feature | Design Value |
|---|---|
| Negative rail capability | Signals down to VCC − 5.5V pass undistorted - eliminates need for level-shifting circuitry in ground-referenced audio systems |
| Integrated shunt resistors | On all NO/NC terminals - automatically bleeds charge from floating nodes to prevent DC transients that cause audible clicks |
| Break-before-make switching | 20ns guaranteed delay - avoids momentary shorting between NC and NO paths, critical for clean speaker muting/unmuting |
| Low THD and high off-isolation | 0.01% THD and −68dB off-isolation - preserves signal fidelity and channel separation in multi-input audio architectures |
| Rail-to-rail digital inputs | CB1/CB2 accept 0V to +5.5V regardless of VCC - simplifies interface with mixed-voltage microcontrollers and codecs |
Applications
| Speaker Switching | Power Routing |
|---|---|
Use Scenario: Dynamically selecting between earpiece, loudspeaker, and headset outputs in a smartphone during call state transitions. IC Role / Device Role / Timing Role: Dual SPDT analog switch routing audio signals between multiple transducers while maintaining DC bias stability. Use Value: Internal shunt resistors and break-before-make timing eliminate audible pop during output switching, meeting EN 62368-1 acoustic emission requirements. | Use Scenario: Isolating auxiliary power paths (e.g., USB VBUS vs. battery) in portable medical monitors requiring fail-safe power domain separation. IC Role / Device Role / Timing Role: Low-RON analog switch acting as a programmable power gate with sub-100ns transition control. Use Value: 0.6Ω on-resistance and ±300mA continuous current rating enable efficient, low-drop power routing without external MOSFETs or drivers. |
| Cellular Phones | MP3 Players |
Use Scenario: Managing microphone and receiver signal paths in dual-SIM LTE handsets with shared audio codec resources. IC Role / Device Role / Timing Role: Dual-channel audio multiplexer enabling simultaneous mic biasing and receiver drive with independent control. Use Value: VCC − 5.5V signal range accommodates legacy electret mic bias schemes and modern MEMS mic interfaces without external op-amps. | Use Scenario: Selecting between line-in, DAC output, and FM radio IF signals in a portable music player with stereo headphone and mono speaker outputs. IC Role / Device Role / Timing Role: Clickless analog switch providing seamless source switching without interrupting playback or introducing noise bursts. Use Value: 0.01% THD and −75dB crosstalk ensure pristine stereo imaging and channel separation across all supported audio sources. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPDT audio switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4744HELB+T | Single CB0 control bit + EN enable; shunt resistors on NO/NC; COM protection when VCC = 0V | Requires simplified control logic but adds system-level power sequencing awareness for robustness | Select when centralized switching control and zero-VCC COM protection are required over independent channel control |
| TS5A23157DCUR | 0.9Ω on-resistance; no integrated shunt resistors; −40°C to +85°C; 10-pin VSSOP | Lacks built-in click/pop suppression - requires external RC networks or firmware-controlled ramping | Select when board area permits larger VSSOP package and system-level pop mitigation is already implemented |
Compared with MAX4744HELB+T, MAX4744ELB+TG104 offers independent CB1/CB2 control for asymmetric routing but lacks COM protection at VCC = 0V; compared with TS5A23157DCUR, it delivers lower RON, integrated shunt resistors, and superior THD-making it preferable for high-fidelity portable audio where PCB area and pop suppression are critical.
Availability
MAX4744ELB+TG104 is available at Aetrix Electronics and suitable for cellular phones, MP3 players, and notebook computers requiring stable component supply, long-term manufacturability, and consistent parametric performance across production lots.
Supply support for MAX4744ELB+TG104 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 semiconductor company specializing in precision analog, mixed-signal, and high-frequency ICs for industrial, communications, and consumer applications.
The MAX4744 series belongs to Maxim's low-voltage audio switch product line, designed specifically for clickless signal routing in battery-powered portable electronics with stringent size, power, and audio quality constraints.
FAQ
What is the maximum allowable analog signal voltage range for MAX4744ELB+TG104?
The MAX4744ELB+TG104 supports analog signals from VCC − 5.5V up to VCC. For example, with a +3.3V supply, signals from −2.2V to +3.3V pass undistorted. This negative rail capability eliminates external level-shifting components in ground-referenced audio circuits and is confirmed in the Electrical Characteristics table under "Analog Signal Range" with test conditions specifying VCC = +2.7V to +5.5V and TA = −40°C to +85°C.
Does MAX4744ELB+TG104 include internal shunt resistors, and how do they function?
Yes, MAX4744ELB+TG104 includes internal shunt resistors on all NO1, NC1, NO2, and NC2 terminals. These resistors automatically discharge capacitance at unconnected terminals during switching transitions, reducing voltage transients that cause audible click-and-pop in speakers. This feature is explicitly documented in the General Description and Features sections, and differentiates MAX4744ELB+TG104 from variants like MAX4745ELB+T which omit shunt resistors.
What is the on-resistance matching specification for MAX4744ELB+TG104, and why does it matter?
MAX4744ELB+TG104 guarantees ≤0.1Ω on-resistance matching (ΔRON) between its two SPDT switches under VCC = +2.7V and 100mA load conditions. This tight matching ensures balanced insertion loss and phase response across stereo channels-critical for maintaining left/right signal integrity in headphone amplifiers and audio codecs. The value is production-guaranteed per the Electrical Characteristics table and directly impacts THD and crosstalk performance.
Can MAX4744ELB+TG104 be used with a 1.8V supply, and what performance trade-offs occur?
Yes, MAX4744ELB+TG104 is fully specified down to +1.8V supply operation. At 1.8V, on-resistance increases to 1.0Ω (max) versus 0.95Ω (typ) at 3.3V, and turn-on time rises to ~600ns. However, THD remains at 0.01%, and negative rail capability extends to −3.7V (1.8V − 5.5V), preserving functionality in ultra-low-power designs. All parameters are validated across the full −40°C to +85°C range per the Absolute Maximum Ratings and Electrical Characteristics tables.
How does the break-before-make timing of MAX4744ELB+TG104 reduce audio artifacts?
MAX4744ELB+TG104 guarantees a 20ns break-before-make delay (tD), ensuring the previously connected path (e.g., NC1) opens fully before the new path (e.g., NO1) closes. This prevents momentary shorting between audio sources-such as connecting both a microphone and receiver to the same codec input-which would cause loud pops or DC glitches. The timing is measured under defined RL/CL conditions and contributes directly to its "clickless" qualification in handheld audio applications.
MAX4744ELB+TG104 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- -
- Multiplexer/Demultiplexer Circuit:
- -
- Switch Circuit:
- -
- Number of Channels:
- -
- On-State Resistance (Max):
- -
- Voltage - Supply, Single (V+):
- -
- Voltage - Supply, Dual (V±):
- -
- -3db Bandwidth:
- -
- Features:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
MAX4744ELB+TG104 FAQ
1.How can I place an order for MAX4744ELB+TG104 through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4744ELB+TG104 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 MAX4744ELB+TG104 reliable?
The price and inventory of MAX4744ELB+TG104 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4744ELB+TG104 is usually 5 days.
3.What payment methods are accepted for MAX4744ELB+TG104?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4744ELB+TG104 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4744ELB+TG104?
MAX4744ELB+TG104 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4744ELB+TG104 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 MAX4744ELB+TG104?
For technical support, including MAX4744ELB+TG104 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4744ELB+TG104 requirements.
6.How does Aetrix verify that MAX4744ELB+TG104 is sourced from the original manufacturer or authorized distributors?
All MAX4744ELB+TG104 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 MAX4744ELB+TG104 meets industry standards.
7.What is the process for return or replacement of MAX4744ELB+TG104?
All MAX4744ELB+TG104 units undergo pre-shipment inspection (PSI). If there is an issue with MAX4744ELB+TG104, 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 MAX4744ELB+TG104 part is unused and in its original packaging.
Return procedure for MAX4744ELB+TG104:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX4744ELB+TG104 Tags
-
TS3USB221ARSER
Texas Instruments
-
TS3USB221AQRSERQ1
Texas Instruments
-
NX3DV221GM,115
NXP Semiconductors
-
NX3DV2567GU,115
NXP Semiconductors
-
TS3USB221RSER
Texas Instruments
-
TS3USB221ERSER
Texas Instruments
-
TC7USB40MU,LF(S2E
Toshiba Semiconductor and Storage
-
TS3USB30EDGSR
Texas Instruments
-
PI3USB221AZUAEX
Diodes Incorporated
-
FSUSB42UMX
onsemi
-
CBTL01023GM,115
NXP Semiconductors
-
TS3USB30ERSWR
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…
