My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX4947EBA+T
- Part No.:
- MAX4947EBA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 25-WFBGA, CSPBGA
- Datasheet:
-
MAX4947EBA+T.pdf
- Description:
- IC SWITCH DPDT X 3 5.5OHM 25UCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,876
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX4947EBA+T from Maxim Integrated is a hex single-pole/double-throw (SPDT) analog switch IC designed for high-speed data routing in portable digital systems. It operates from a single +1.8V to +5.5V supply, delivers 4Ω typical on-resistance, 30pF typical off-capacitance, and supports rail-to-rail signal switching - enabling clean SDIO, UART, and USB signal path management in space-constrained handheld devices.
For engineers reviewing the MAX4947EBA+T datasheet, MAX4947EBA+T pinout, MAX4947EBA+T application, or MAX4947EBA+T equivalent, key selection criteria include its 25-bump UCSP (2.5mm × 2.5mm) package, EN/CB logic interface architecture, break-before-make timing (2ns), -70dB off-isolation at 1MHz, and guaranteed performance across -40°C to +85°C.
Technical Context
The MAX4947EBA+T implements six independent SPDT switches controlled by a single digital control input (CB) and an active-low enable (EN). When EN = low, CB determines whether each COM_ terminal connects to NO_ (CB = high) or NC_ (CB = low); when EN = high, all switches enter high-impedance state regardless of CB level.
Its CMOS process ensures rail-to-rail analog signal handling (0V to VCC), bidirectional operation, and low charge injection (10pC typ). The device features matched on-resistance (ΔRON ≤ 0.6Ω), flat on-resistance over voltage range (RFLAT ≤ 1.2Ω), and high-frequency capability with 300MHz -3dB bandwidth and <0.2ns channel-to-channel skew.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.8V to +5.5V - supports direct interfacing with 1.8V, 2.7V, 3.3V, and 5V logic and analog domains without level shifting. |
| On-Resistance (RON) | 4Ω typical at VCC = 2.7V - minimizes signal attenuation and voltage drop in high-current data paths like SDIO DAT lines. |
| Off-Capacitance (CNO/OFF) | 15pF typical - preserves signal integrity and bandwidth in high-speed switching (e.g., USB 1.1 full-speed, UART up to 12Mbps). |
| Off-Isolation | -70dB at 1MHz - suppresses crosstalk between inactive channels, critical for multiplexing shared buses like SDIO CMD/DAT. |
| Turn-On/Off Time | 400ns/300ns typical (VCC = 2.7V) - enables reliable switching within microsecond-scale control windows in host-controller-driven protocols. |
| Break-Before-Make | 2ns typical - prevents momentary short-circuits during state transitions, essential for glitch-free signal reconfiguration. |
| Operating Temperature | -40°C to +85°C - qualified for industrial and consumer mobile applications including smartphones and PDAs. |
Pinout & Package
MAX4947EBA+T is packaged in a 25-bump UCSP™ (2.5mm × 2.5mm) wafer-level chip-scale package with exposed paddle (EP) connected to GND. Pin mapping follows bump-side-down orientation per Maxim's UCSP layout standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (bumps 1, 6, 15, 23) | Ground reference | Four dedicated ground bumps minimize ground bounce and improve noise immunity in high-speed switching. |
| VCC (bump 22) | Positive supply | Single-supply input requiring local 0.1µF bypass capacitor to suppress switching transients. |
| EN (bump 5) | Enable control | Active-low global enable: high = all switches open (Hi-Z); low = CB functional for channel selection. |
| CB (bump 14) | Digital control | Single logic input determining COM→NO (CB = high) or COM→NC (CB = low) for all six SPDTs. |
| COM1–COM6 (bumps 20, 16, 11, 7, 3, 23) | Analog common terminals | Bidirectional ports - may serve as inputs or outputs depending on system signal flow direction. |
| NO1–NO6 / NC1–NC6 (bumps 19, 17, 10, 8, 2, 24 and 18, 15, 12, 9, 4, 1) | Normally-open / Normally-closed terminals | Fixed-function analog I/O pins; NC_ and NO_ are not interchangeable - routing must match truth table behavior. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail signal handling | Supports analog signals from 0V to VCC without clipping - enables seamless integration with 1.8V/3.3V SDIO, UART, and USB PHY layers. |
| Low 30pF typical off-capacitance | Reduces capacitive loading on high-speed data lines, preserving edge rate and minimizing intersymbol interference in >10Mbps interfaces. |
| Guaranteed 4Ω on-resistance | Ensures predictable insertion loss and minimal voltage division in current-sensitive paths such as memory card detection circuits. |
| 2ns typical break-before-make interval | Eliminates signal shorting during reconfiguration - critical for avoiding bus contention in shared SDIO or dual-host architectures. |
| UCSP package (2.5mm × 2.5mm) | Reduces PCB area by >60% vs. TQFN alternatives - ideal for ultra-thin smartphones, wearables, and compact IoT modules. |
Applications
| SDIO Interface Multiplexing | USB 1.1 Signal Switching |
|---|---|
|
Use Scenario: A smartphone uses one SDIO controller to alternate between internal eMMC and external microSD card. IC Role / Device Role / Timing Role: MAX4947EBA+T acts as a bidirectional signal router, isolating unused card while connecting active one under host software control via EN/CB. Use Value: Enables dual-storage support without additional SDIO controllers; 30pF capacitance and 4Ω RON preserve signal integrity up to 50MHz clock rates. |
Use Scenario: A docking station dynamically routes USB D+/D- lines between host PC and peripheral devices (keyboard, flash drive). IC Role / Device Role / Timing Role: MAX4947EBA+T serves as a hardware-controlled USB signal switch, activated only during enumeration to prevent phantom device detection. Use Value: 300MHz bandwidth and <0.2ns skew ensure full-speed (12Mbps) USB compliance; EN pin allows hot-plug-safe isolation. |
| UART Port Sharing | Memory Stick Interface Routing |
|
Use Scenario: An industrial PDA shares a single UART interface among GPS module, Bluetooth radio, and barcode scanner via time-division access. IC Role / Device Role / Timing Role: MAX4947EBA+T functions as a low-latency serial port selector, toggled by MCU GPIO to connect one peripheral at a time. Use Value: 400ns turn-on time supports baud rates up to 2.5Mbps; rail-to-rail operation accommodates 3.3V and 5V UART logic levels. |
Use Scenario: A digital camera supports both Memory Stick PRO Duo and standard Memory Stick via shared physical connector. IC Role / Device Role / Timing Role: MAX4947EBA+T routes parallel data/address lines (DAT0–DAT3, CMD, CLK) between two memory card types under firmware control. Use Value: Matched on-resistance (ΔRON ≤ 0.6Ω) ensures uniform timing across all eight switched lines, preventing setup/hold violations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4948ERA+ | Same die, identical electrical specs and pinout - differs only in UCSP bump configuration (ERA+ uses 25-bump layout matching EBA+T). | No functional difference; ERA+ is Maxim's official orderable UCSP variant for MAX4948 family. | Select MAX4948ERA+ if sourcing from Maxim Direct or authorized distributors with full traceability; EBA+T is legacy marking for same device. |
| TMUX1574RSVR | 4Ω RON, 12pF CIO, but requires dual supplies (VCC/VDD) and lacks EN pin - uses single logic input with inverted control logic. | Not drop-in: different pinout, no enable function, and higher supply complexity limits use in battery-powered SDIO systems. | Prefer MAX4947EBA+T for single-supply, EN-controlled, space-constrained designs; TMUX1574 suits fixed-rail industrial systems needing lower capacitance. |
Compared with MAX4948ERA+, MAX4947EBA+T offers identical functionality and UCSP footprint - the part number reflects historical Maxim marking convention rather than technical divergence. Against TMUX1574RSVR, MAX4947EBA+T provides integrated enable control, simpler power architecture, and proven SDIO/Memory Stick interoperability per Maxim's application notes.
Availability
MAX4947EBA+T is available at Aetrix Electronics and suitable for SDIO multiplexing, USB signal routing, and UART port sharing requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MAX4947EBA+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 MAX4947/MAX4948 product line was engineered specifically for high-density, low-voltage data switching in portable electronics - emphasizing minimal on-capacitance, ultra-small packaging, and robust rail-to-rail signal handling for memory card and interface consolidation.
FAQ
What is the maximum operating frequency supported by MAX4947EBA+T?
The MAX4947EBA+T has a -3dB bandwidth of 300MHz, verified under 50Ω source/load conditions with 5pF load capacitance. This enables reliable operation in full-speed USB 1.1 (12Mbps), SDIO (up to 50MHz), and UART (up to 2.5Mbps) applications. Bandwidth is limited by on-capacitance and on-resistance interaction; actual usable frequency depends on PCB layout and signal termination.
Does MAX4947EBA+T support bidirectional signal flow?
Yes, MAX4947EBA+T supports fully bidirectional analog signal routing. Its CMOS transmission-gate architecture allows NO_, NC_, and COM_ terminals to function interchangeably as inputs or outputs - essential for protocols like SDIO and USB where data direction changes dynamically. No external biasing or direction-control logic is required.
How does the EN pin affect switching behavior in MAX4947EBA+T?
In MAX4947EBA+T, the EN pin is active-low: when EN = high, all six SPDT switches enter high-impedance state regardless of CB logic level, effectively disconnecting all signal paths. When EN = low, CB controls switching state (COM→NO or COM→NC). This enables safe hot-plug isolation and power-aware routing in battery-operated devices.
What is the thermal performance of MAX4947EBA+T in its UCSP package?
The MAX4947EBA+T in 25-bump UCSP (2.5mm × 2.5mm) has a power dissipation limit of 976mW at TA = +70°C, derating by 12.2mW/°C above that temperature. Junction-to-board thermal resistance (ψJB) is optimized via the exposed paddle (EP), which must be soldered to a solid GND plane. Under typical SDIO switching loads (<10mA per channel), junction temperature rise remains below 15°C.
Can MAX4947EBA+T replace MAX4948ETG+ in a design?
No - MAX4947EBA+T and MAX4948ETG+ are not pin-compatible. MAX4947EBA+T uses a 25-bump UCSP package with specific bump layout, while MAX4948ETG+ uses a 24-pin TQFN-EP. Though electrically identical, their footprints, soldering profiles, and mechanical mounting differ significantly. Migration requires PCB redesign and requalification per JEDEC J-STD-020.
MAX4947EBA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- DPDT
- Multiplexer/Demultiplexer Circuit:
- 2:2
- Number of Circuits:
- 3
- On-State Resistance (Max):
- 5.5Ohm
- Channel-to-Channel Matching (ΔRon):
- 300mOhm
- Voltage - Supply, Single (V+):
- 1.8V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 800ns, 800ns
- -3db Bandwidth:
- 300MHz
- Charge Injection:
- 10pC
- Channel Capacitance (CS(off), CD(off)):
- 15pF
- Current - Leakage (IS(off)) (Max):
- 3nA
- Crosstalk:
- -90dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 25-UCSP (2.54x2.54)
MAX4947EBA+T FAQ
1.How can I place an order for MAX4947EBA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4947EBA+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 MAX4947EBA+T reliable?
The price and inventory of MAX4947EBA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4947EBA+T is usually 5 days.
3.What payment methods are accepted for MAX4947EBA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4947EBA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4947EBA+T?
MAX4947EBA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4947EBA+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 MAX4947EBA+T?
For technical support, including MAX4947EBA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4947EBA+T requirements.
6.How does Aetrix verify that MAX4947EBA+T is sourced from the original manufacturer or authorized distributors?
All MAX4947EBA+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 MAX4947EBA+T meets industry standards.
7.What is the process for return or replacement of MAX4947EBA+T?
All MAX4947EBA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4947EBA+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 MAX4947EBA+T part is unused and in its original packaging.
Return procedure for MAX4947EBA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX4947EBA+T Tags
-
SN74LVC1G3157DBVR
Texas Instruments
-
SN74LVC1G66DBVR
Texas Instruments
-
SN74LVC1G66DCKR
Texas Instruments
-
SN74LVC1G3157DSFR
Texas Instruments
-
1P1G3157QDCKRQ1
Texas Instruments
-
SN74LVC2G66DCUR
Texas Instruments
-
SN74LV4052APWR
Texas Instruments
-
74HC4051D,653
Nexperia USA Inc.
-
SN74LV4051APWR
Texas Instruments
-
CD74HC4052PWR
Texas Instruments
-
CD74HC4051PWR
Texas Instruments
-
TS5A3166DBVR
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…
