My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX7394ATTRD+
- Part No.:
- MAX7394ATTRD+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Oscillators
- Package:
- 6-WDFN Exposed Pad
- Datasheet:
-
MAX7394ATTRD+.pdf
- Description:
- MEMS OSC XO 4.0000MHZ CMOS SMD
- Quantity:
- Payment:
- Shipping:
Inventory:2,253
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX7394ATTRD+ from Maxim Integrated is a precision silicon oscillator with enable control, replacing quartz crystals and ceramic resonators in +2.4V to +3.6V systems. It delivers factory-set 4MHz output with ±0.25% total accuracy (0°C to +85°C, TDFN package), 5ns rise/fall time, and operates across -40°C to +125°C. It serves as a robust clock source for USB peripherals and industrial microcontrollers requiring stable timing without external components.
For engineers reviewing the MAX7394ATTRD+ datasheet, MAX7394ATTRD+ pinout, MAX7394ATTRD+ application, or MAX7394ATTRD+ equivalent, key selection criteria include its enable-controlled startup behavior, TDFN-6 package footprint, ±0.25% accuracy over commercial temperature range, and compatibility with 3.3V microcontroller clock inputs.
Technical Context
The MAX7394ATTRD+ integrates a temperature-compensated silicon oscillator core with a dedicated ENABLE input that actively disables the oscillator and reduces supply current to <2µA. Its CLOCK output is a rail-to-rail CMOS push-pull driver capable of sourcing/sinking ±50mA, eliminating impedance-matching concerns.
It features dual supply rails (VCC and VCC2), both rated for +2.4V to +3.6V, with independent bypassing requirements. The I.C. pin must be tied to GND; it is not a functional signal but an internal connection point critical for stability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Frequency | 4MHz - factory-trimmed, no calibration required; replaces crystal-based oscillators directly. |
| Total Accuracy (0°C to +85°C) | ±0.25% - guaranteed over full voltage and temperature range; enables USB-compliant timing without margining. |
| Rise/Fall Time | 5ns - ensures clean edge integrity into 10pF load; supports high-speed digital clocking without added slew control. |
| Supply Voltage Range | +2.4V to +3.6V - matches modern low-voltage MCU I/O domains; eliminates level-shifting for clock distribution. |
| Shutdown Current | <2µA - ENABLE-driven power gating enables ultra-low-power sleep modes in battery-operated devices. |
| Duty Cycle | 40% to 60% - maintains balanced logic thresholds for reliable sampling in synchronous digital systems. |
| Startup Time | 2ms - deterministic stabilization enables precise power-on sequencing in firmware-controlled boot paths. |
Pinout & Package
MAX7394ATTRD+ uses a 6-pin, 3mm × 3mm TDFN package with exposed pad (EP) connected to GND. Pin 1 = VCC, Pin 2 = GND, Pin 3 = I.C. (must be grounded), Pin 4 = ENABLE, Pin 5 = CLOCK, Pin 6 = VCC2. EP is electrically tied to GND and improves thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Core oscillator supply input | Bypassed to GND with 0.1µF capacitor; powers internal oscillator circuitry. |
| GND (Pin 2) | Ground reference | Common return path for VCC, VCC2, and output driver; connects to EP. |
| I.C. (Pin 3) | Internally connected node | Must be externally tied to GND; floating or misconnected causes instability or failure. |
| ENABLE (Pin 4) | Active-high oscillator control | Logic high = normal operation; logic low = shutdown with weak HIGH output and <2µA current draw. |
| CLOCK (Pin 5) | CMOS push-pull clock output | Rail-to-rail, ±50mA drive strength; compatible with standard MCU clock inputs without series termination. |
| VCC2 (Pin 6) | Output driver supply input | Independent rail for CLOCK output stage; bypassed separately with 0.1µF capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Enable-controlled shutdown | Reduces system idle power by disabling oscillator while maintaining fast wake-up (2ms startup). |
| No external components required | Eliminates crystal load capacitors, feedback resistors, and bias networks-reducing BOM count and layout area. |
| Robust environmental tolerance | Immune to mechanical shock, vibration, and humidity-unlike quartz crystals-enabling use in automotive and industrial enclosures. |
| Factory-set frequency | 4MHz trimmed at wafer/test level; avoids post-solder calibration and guarantees first-pass timing compliance. |
| Wide supply range (+2.4V to +3.6V) | Supports direct interfacing with 2.5V, 3.0V, and 3.3V logic families without LDOs or regulators. |
Applications
| USB Peripheral Timing | Industrial Microcontroller Clock |
|---|---|
Use Scenario: Providing master clock to USB 2.0 transceivers or hubs in embedded host controllers. IC Role / Device Role / Timing Role: Primary system clock source meeting USB 2.0 ±0.25% accuracy requirement at 48MHz (via PLL multiplication) or direct 4MHz peripheral clocking. Use Value: Eliminates crystal aging drift and board-level EMI sensitivity while maintaining USB certification-grade stability over temperature. |
Use Scenario: Driving clock input of ARM Cortex-M4/M7 MCUs in programmable logic controllers (PLCs) operating at extended temperature. IC Role / Device Role / Timing Role: High-reliability clock generator enabling deterministic real-time execution in -40°C to +125°C environments. Use Value: Replaces fragile quartz oscillators prone to thermal shock failure; achieves ±0.25% accuracy without oven control or recalibration. |
| White Goods System Clock | Handheld Product Sleep/Wake Timing |
Use Scenario: Synchronizing motor control, display, and sensor subsystems in washing machines and refrigerators. IC Role / Device Role / Timing Role: Central timing reference for multi-domain SoC or discrete MCU + peripheral clusters. Use Value: Withstands high-humidity condensation cycles and mechanical vibration during spin cycles without frequency shift or stoppage. |
Use Scenario: Enabling low-power sleep mode in portable medical monitors or barcode scanners with rapid wake-up response. IC Role / Device Role / Timing Role: Enable-gated clock source allowing software-controlled entry/exit from ultra-low-power states. Use Value: Achieves <2µA shutdown current while retaining sub-2ms clock stabilization-critical for battery runtime extension. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision oscillator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SiT8008BI-12-33E-4.000000 | ±20ppm (±0.002%) initial accuracy; 4-pin 2.0×1.6mm SMD; no enable pin; single supply (1.8–3.3V). | Higher accuracy but lacks ENABLE control; requires redesign for power-gated clock trees. | Choose when absolute frequency stability outweighs active power management needs. |
| DS3231M+T&R | ±5ppm TCXO with integrated RTC; I²C interface; 3.3V only; 16-pin TSSOP; no enable pin. | Combines timing + calendar functions; unsuitable as standalone clock generator due to interface overhead and larger footprint. | Choose only if real-time clock functionality is co-required; not a drop-in replacement for MAX7394ATTRD+. |
Compared with SiT8008BI-12-33E-4.000000 and DS3231M+T&R, the MAX7394ATTRD+ uniquely balances moderate accuracy (±0.25%), active enable control, minimal footprint (3×3mm TDFN), and dual-supply flexibility-making it optimal for cost-sensitive, power-aware 4MHz clocking where simplicity and reliability are prioritized over ultra-high precision.
Availability
MAX7394ATTRD+ is available at Aetrix Electronics and suitable for USB peripheral timing, industrial microcontroller clocking, and white goods system synchronization requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX7394ATTRD+ 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 high-performance analog and mixed-signal ICs for industrial, computing, and communications applications.
The MAX7394ATTRD+ belongs to Maxim's precision silicon oscillator family, engineered to replace quartz-based timing solutions in space-constrained, environmentally harsh, or power-sensitive systems where reliability and ease of integration are critical.
FAQ
What is the operating temperature range for MAX7394ATTRD+?
The MAX7394ATTRD+ is specified for continuous operation from -40°C to +125°C. Its ±0.25% total accuracy guarantee applies over 0°C to +85°C, while ±1.0% accuracy is maintained across the full -40°C to +125°C range-making it suitable for under-hood automotive modules and industrial PLCs where ambient extremes occur.
Does MAX7394ATTRD+ require external load capacitors like quartz crystals?
No. The MAX7394ATTRD+ is a fully integrated silicon oscillator with factory-trimmed frequency and on-chip compensation. It requires no external load capacitors, feedback resistors, or crystal matching networks-only 0.1µF bypass capacitors on VCC and VCC2 pins placed close to the device per the datasheet layout guidance.
How does the ENABLE pin function on MAX7394ATTRD+?
The ENABLE pin on MAX7394ATTRD+ is an active-high control input. When driven high (≥0.7×VCC2), the oscillator runs normally and CLOCK outputs the 4MHz signal. When driven low (≤0.3×VCC2), the oscillator shuts down, CLOCK enters high-impedance weak-HIGH state (10kΩ pull-up to VCC2), and total supply current drops below 2µA-ideal for firmware-controlled power gating.
Can MAX7394ATTRD+ drive a 50Ω transmission line directly?
No. The MAX7394ATTRD+ CLOCK output is a CMOS push-pull driver optimized for capacitive loads up to 10pF and resistive loads (e.g., 1kΩ to GND or 500Ω to VCC2). For 50Ω PCB traces, a series resistor (typically 22–33Ω) should be added near the driver to damp reflections-though no termination is needed for typical MCU clock inputs.
What is the significance of the "+" suffix in MAX7394ATTRD+?
The "+" suffix in MAX7394ATTRD+ indicates a lead(Pb)-free and RoHS-compliant package per EU Directive 2011/65/EU. It denotes the same 3mm × 3mm TDFN package with exposed pad (EP), fully compatible with standard reflow profiles and halogen-free assembly processes-no derating or handling changes are required versus non-RoHS versions.
MAX7394ATTRD+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- MAX7394
- Package/Case:
- 6-WDFN Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- Base Resonator:
- MEMS
- Type:
- XO (Standard)
- Frequency:
- 4 MHz
- Function:
- Enable/Disable
- Output:
- CMOS
- Voltage - Supply:
- 2.4V ~ 3.6V
- Frequency Stability:
- -
- Absolute Pull Range (APR):
- -
- Operating Temperature:
- -40°C ~ 125°C
- Spread Spectrum Bandwidth:
- -
- Current - Supply (Max):
- 5.4mA
- Ratings:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-VDFN (3.2x2.5)
- Size / Dimension:
- 0.118" L x 0.118" W (3.00mm x 3.00mm)
- Height - Seated (Max):
- 0.031" (0.80mm)
MAX7394ATTRD+ FAQ
1.How can I place an order for MAX7394ATTRD+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX7394ATTRD+ 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 MAX7394ATTRD+ reliable?
The price and inventory of MAX7394ATTRD+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX7394ATTRD+ is usually 5 days.
3.What payment methods are accepted for MAX7394ATTRD+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX7394ATTRD+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX7394ATTRD+?
MAX7394ATTRD+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX7394ATTRD+ 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 MAX7394ATTRD+?
For technical support, including MAX7394ATTRD+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX7394ATTRD+ requirements.
6.How does Aetrix verify that MAX7394ATTRD+ is sourced from the original manufacturer or authorized distributors?
All MAX7394ATTRD+ 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 MAX7394ATTRD+ meets industry standards.
7.What is the process for return or replacement of MAX7394ATTRD+?
All MAX7394ATTRD+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX7394ATTRD+, 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 MAX7394ATTRD+ part is unused and in its original packaging.
Return procedure for MAX7394ATTRD+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX7394ATTRD+ Tags
-
ECS-2333-160-BN-TR
ECS Inc.
-
ECS-2333-240-BN-TR
ECS Inc.
-
KC2016Z25.0000C1KX00
KYOCERA AVX
-0.035-Thick.jpg)
-
ECS-2033-250-BN
ECS Inc.
-
O 25,0-JO32-B-1V3-1-T1-LF
Jauch Quartz
-
SIT1533AI-H4-DCC-32.768E
SiTime
-
ECS-2333-500-BN-TR
ECS Inc.
-
COM1305-50.000-EXT-T-TR
Raltron Electronics
-
SG-210STF 24.0000ML0
EPSON
-
ECS-3225MV-320-CN-TR
ECS Inc.
-
ECS-2033-240-BN
ECS Inc.
-
ECS-2333-120-BN-TR
ECS Inc.
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
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…
