My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX4638EUE+
- Part No.:
- MAX4638EUE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX4638EUE+.pdf
- Description:
- IC MUX 8:1 3.5OHM 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:8,375
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX4638EUE+ from Maxim Integrated is a single 8:1 CMOS analog multiplexer designed for low-voltage signal routing in portable and battery-powered systems. It operates from +1.8V to +5.5V single supply or ±2.5V dual supplies, delivers 3.5Ω on-resistance at +5V, -75dB off-isolation, and 85MHz bandwidth, and supports rail-to-rail analog signals in medical instrumentation and data-acquisition front-ends.
For engineers reviewing the MAX4638EUE+ datasheet, MAX4638EUE+ pinout, MAX4638EUE+ application, or MAX4638EUE+ equivalent, key selection criteria include guaranteed break-before-make switching, 0.25nA leakage at +25°C, 18ns turn-on time, and TSSOP-16 package compatibility with space-constrained PCB layouts.
Technical Context
The MAX4638EUE+ implements a 3-bit binary address decoder (A0–A2) to select one of eight bidirectional analog inputs (NO1–NO8) to a common output (COM), with TTL/CMOS-compatible control logic and an active-low enable (EN) input. All channels guarantee break-before-make operation to prevent signal shorting during switching transitions.
It features rail-to-rail signal handling across its full analog range (V− to V+), supports bidirectional current flow, and maintains tight on-resistance matching (±0.4Ω) and flatness (≤1Ω over signal range) - critical for precision gain-setting and sensor multiplexing where channel-to-channel consistency is required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 3.5Ω at +5V supply - ensures minimal signal attenuation and voltage drop in low-level analog paths |
| Off-Isolation | -75dB at 10MHz - suppresses crosstalk between unselected channels in high-frequency routing |
| Switching Time (tON/tOFF) | 18ns / 7ns - enables fast channel scanning in real-time data acquisition systems |
| Analog Bandwidth (-3dB) | 85MHz - supports video-rate and wideband sensor signal multiplexing without roll-off |
| Leakage Current (ICOM_(OFF)) | ±0.25nA at +25°C - preserves accuracy in high-impedance sensor interfaces and precision ADC front-ends |
| Supply Range | +1.8V to +5.5V single supply or ±2.5V dual supply - matches Li-ion, coin-cell, and split-rail system requirements |
| Logic Compatibility | TTL/CMOS inputs - simplifies interface with microcontrollers and FPGAs without level-shifting |
Pinout & Package
The MAX4638EUE+ is housed in a 16-pin TSSOP package (JEDEC MO-153, 4.4mm × 5.0mm body, 0.65mm pitch) with exposed thermal pad not present in this variant. Pin 1 is A2 (MSB address), pins 4–7 and 9–12 are analog inputs NO1–NO8, pin 8 is COM (common output), pin 2 is V−, pin 13 is V+, pin 14 is GND, pin 3 is EN, and pins 15–16 are A1/A0 (LSB address bits).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A2) | Address Input (MSB) | Selects NO1–NO8 via 3-bit binary code; high-impedance CMOS input |
| 2 (V−) | Negative Supply Rail | Reference for dual-supply operation; tied to GND in single-supply mode |
| 3 (EN) | Enable Control Input | Active-high logic; disables all switches when low, enabling power-gating |
| 4–7 (NO1–NO4) | Bidirectional Analog Inputs | Accept rail-to-rail signals; source/sink up to ±100mA continuous current |
| 8 (COM) | Common Analog Output | Single bidirectional node routed to selected NOx; shares same RON and bandwidth specs |
| 9–12 (NO5–NO8) | Bidirectional Analog Inputs | Identical electrical specs to NO1–NO4; full 8-channel symmetry |
| 13 (V+) | Positive Supply Rail | Supports +1.8V to +5.5V; internal charge pump not required |
| 14 (GND) | Ground Reference | Signal return path; must be low-impedance connection near device |
| 15 (A1) | Address Input | Middle bit of 3-bit address bus; determines channel group (1–4 vs 5–8) |
| 16 (A0) | Address Input (LSB) | Least-significant bit; completes binary decoding for exact channel selection |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed RON match | ±0.4Ω between channels - eliminates gain error in multi-channel calibration routines |
| Rail-to-rail signal handling | V− to V+ analog range - preserves full dynamic range of sensors and DAC outputs |
| Break-before-make switching | 1ns minimum tBBM - prevents momentary shorts during channel transitions in sensitive circuits |
| Low charge injection | 13pC - minimizes settling error and glitch energy in sample-and-hold and ADC input stages |
| Ultra-low leakage | 0.25nA COM off-leakage - avoids DC offset drift in high-Z biomedical front-ends |
Applications
| Medical Instrumentation | Portable Data Acquisition |
|---|---|
Use Scenario: Multiplexing ECG electrode signals into a single high-resolution ADC channel. IC Role / Device Role / Timing Role: 8:1 analog switch routing biopotential inputs while maintaining sub-microvolt baseline stability. Use Value: 0.25nA leakage and 3.5Ω RON minimize electrode-skin interface errors and gain nonlinearity. | Use Scenario: Scanning multiple thermistor and RTD sensor nodes in handheld environmental monitors. IC Role / Device Role / Timing Role: Low-voltage analog mux selecting passive sensor bridges under microcontroller control. Use Value: +1.8V operation extends battery life; 18ns switching enables >50ksps per-channel sampling. |
| Audio Signal Routing | Test Equipment Channel Selection |
Use Scenario: Dynamic reconfiguration of line-level audio inputs in compact mixer interfaces. IC Role / Device Role / Timing Role: Bidirectional rail-to-rail switch handling AC-coupled ±2Vpk-pk signals without clipping. Use Value: -85dB crosstalk and 85MHz bandwidth preserve stereo separation and transient fidelity. | Use Scenario: Automated test fixture routing DUT signals to measurement instruments (oscilloscope, DMM). IC Role / Device Role / Timing Role: Precision analog switch enabling repeatable, low-noise signal path selection. Use Value: Guaranteed 1Ω RON flatness ensures consistent impedance matching across all 8 channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG1408BRUZ | 8:1 mux, 4.7Ω RON at +5V, ±15V dual-supply capable, 16-TSSOP | Higher supply voltage range but higher RON and leakage (±2nA); suited for industrial PLC I/O modules | Choose ADG1408BRUZ only if ±15V operation or higher breakdown voltage is required |
| TMUX1308PWR | 8:1 mux, 4.5Ω RON at +5V, +1.08V to +5.5V supply, 16-TSSOP, no dual-supply support | Lower minimum supply (1.08V), but lacks ±2.5V dual-mode and has reduced off-isolation (-65dB) | Prefer TMUX1308PWR for ultra-low-voltage battery systems where dual-supply is unnecessary |
Compared with ADG1408BRUZ and TMUX1308PWR, the MAX4638EUE+ uniquely balances low RON (3.5Ω), dual-supply flexibility (±2.5V), and ultra-low leakage (0.25nA), making it optimal for portable medical and precision sensing where signal integrity and power efficiency are co-prioritized.
Availability
MAX4638EUE+ is available at Aetrix Electronics and suitable for medical instrumentation, portable data-acquisition systems, and audio signal routing requiring stable component supply across extended production lifecycles.
Supply support for MAX4638EUE+ 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, medical, and communications applications.
The MAX4638 series targets low-voltage, high-fidelity analog signal routing - emphasizing rail-to-rail operation, low leakage, and guaranteed switching behavior for portable and battery-sensitive systems.
FAQ
What is the maximum supply voltage rating for MAX4638EUE+?
The MAX4638EUE+ has an absolute maximum V+ to V− rating of +6V. For reliable operation, the recommended single-supply range is +1.8V to +5.5V, and dual-supply range is ±2.5V. Exceeding these limits risks permanent damage, as confirmed in the Absolute Maximum Ratings table of the datasheet. The MAX4638EUE+ must never operate with V+ − V− > 6V.
Does MAX4638EUE+ support break-before-make switching, and is it guaranteed?
Yes, the MAX4638EUE+ guarantees break-before-make (BBM) switching with a minimum tBBM of 1ns, verified across -40°C to +85°C. This prevents momentary shorting between channels during address transitions - essential for protecting sensitive sources like transducer amplifiers. The BBM timing is explicitly characterized in the Electrical Characteristics tables and validated in Figure 3 of the MAX4638EUE+ datasheet.
Can MAX4638EUE+ handle bipolar analog signals in dual-supply mode?
Yes, the MAX4638EUE+ fully supports bipolar analog signals when operated from ±2.5V supplies, with analog input/output range extending from V− to V+ (i.e., -2.5V to +2.5V). Its rail-to-rail capability and symmetric on-resistance (3.5Ω typical) ensure linear performance across the full range, as confirmed in the ±2.5V Electrical Characteristics section and Typical Operating Characteristics plots.
What is the thermal pad configuration for MAX4638EUE+ in TSSOP package?
The MAX4638EUE+ uses a standard 16-pin TSSOP package (U16+2) without an exposed thermal pad. Unlike the TQFN variants (e.g., MAX4638ETE+), the TSSOP version has a solid plastic body and requires standard reflow profiles. Thermal dissipation relies on copper traces connected to pins 2 (V−), 13 (V+), and 14 (GND), as specified in Maxim's land pattern document 90-0117.
How does MAX4638EUE+ compare to MAX4639EUE+ in pin compatibility and function?
The MAX4638EUE+ and MAX4639EUE+ share the same 16-pin TSSOP footprint but differ functionally: MAX4638EUE+ is a single 8:1 mux (NO1–NO8 → COM), while MAX4639EUE+ is a dual 4:1 mux (NO1A–NO4A → COMA and NO1B–NO4B → COMB). Pin assignments diverge at pins 8–9 (COM vs COMA/COMB) and 15–16 (A2/A1/A0 vs A1/A0), making them not pin-compatible. Board redesign is required for substitution.
MAX4638EUE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- 8:1
- Number of Circuits:
- 1
- On-State Resistance (Max):
- 3.5Ohm
- Channel-to-Channel Matching (ΔRon):
- 100mOhm
- Voltage - Supply, Single (V+):
- 1.8V ~ 5.5V
- Voltage - Supply, Dual (V±):
- ±2.5V
- Switch Time (Ton, Toff) (Max):
- 18ns, 7ns
- -3db Bandwidth:
- 50MHz
- Charge Injection:
- 13pC
- Channel Capacitance (CS(off), CD(off)):
- 9pF, 40pF
- Current - Leakage (IS(off)) (Max):
- 250pA
- Crosstalk:
- -85dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TSSOP
MAX4638EUE+ FAQ
1.How can I place an order for MAX4638EUE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4638EUE+ 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 MAX4638EUE+ reliable?
The price and inventory of MAX4638EUE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4638EUE+ is usually 5 days.
3.What payment methods are accepted for MAX4638EUE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4638EUE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4638EUE+?
MAX4638EUE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4638EUE+ 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 MAX4638EUE+?
For technical support, including MAX4638EUE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4638EUE+ requirements.
6.How does Aetrix verify that MAX4638EUE+ is sourced from the original manufacturer or authorized distributors?
All MAX4638EUE+ 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 MAX4638EUE+ meets industry standards.
7.What is the process for return or replacement of MAX4638EUE+?
All MAX4638EUE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX4638EUE+, 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 MAX4638EUE+ part is unused and in its original packaging.
Return procedure for MAX4638EUE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX4638EUE+ 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…
