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MAX7300AGL-T
Analog Devices Inc./Maxim Integrated
MULTI-PORT I/O EXPANDER
2494 Pcs New Original In Stock
I/O Expander 28 I2C, 2-Wire Serial 400 kHz 40-SQFN (6x6)
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Minimum 1
Minimum 1
5.0 / 5.0
- (116 Ratings)
MAX7300AGL-T
Product Overview
9198251
DiGi Electronics Part Number
MAX7300AGL-T-DGManufacturer
Analog Devices Inc./Maxim Integrated
MAX7300AGL-T
Description
MULTI-PORT I/O EXPANDERInventory
2494 Pcs New Original In Stock
I/O Expander 28 I2C, 2-Wire Serial 400 kHz 40-SQFN (6x6)
Quantity
Minimum 1
Minimum 1
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MAX7300AGL-T Technical Specifications
Category
Interface, I/O Expanders
Packaging
-
Series
-
Product Status
Active
DiGi-Electronics Programmable
Not Verified
Number of I/O
28
Interface
I2C, 2-Wire Serial
Interrupt Output
Yes
Features
-
Output Type
Open Drain, Push-Pull
Current - Output Source/Sink
4.5mA, 10mA
Clock Frequency
400 kHz
Voltage - Supply
2.5V ~ 5.5V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
40-VFQFN Exposed Pad
Supplier Device Package
40-SQFN (6x6)
Datasheet & Documents
HTML Datasheet
MAX7300AGL-T-DG
Environmental & Export Classification
RoHS Status
RoHS non-compliant
Moisture Sensitivity Level (MSL)
3 (168 Hours)
REACH Status
REACH Affected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
2156-MAX7300AGL-T
MAXMAXMAX7300AGL-T
Standard Package
57
Reviews
5.0/5.0-(Show up to 5 Ratings)
December 02, 2025
Toujours un plaisir d'acheter chez DiGi Electronics grâce à leur service amical et leurs prix compétitifs.
December 02, 2025
Excellent delivery times! I placed an order and received it the next day. Very reliable service.
December 02, 2025
The staff at DiGi Electronics are incredibly approachable and quick to respond to all my inquiries.
December 02, 2025
DiGi Electronics’ products arrive faster than I expected and are built to survive rough handling.
December 02, 2025
DiGi’s products have proven to be remarkably durable, even under challenging conditions.
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Frequently Asked Questions (FAQ)
What are the key design risks when using the MAX7300AGL-T I/O expander in a high-noise industrial environment, and how can they be mitigated?
The MAX7300AGL-T, while robust with an operating temperature range of -40°C to 125°C, is susceptible to I2C signal integrity issues in electrically noisy environments due to its open-drain and push-pull outputs. To mitigate risks, use shielded twisted-pair cabling for I2C lines, add series termination resistors (typically 100–330Ω) near the SDA/SCL pins, and ensure a solid ground plane beneath the 40-SQFN package. Additionally, place decoupling capacitors (0.1µF ceramic) as close as possible to the VDD pin to suppress high-frequency noise. Avoid long trace runs and consider using I2C buffers like the PCA9515A if bus capacitance exceeds 400 pF.
Can the MAX7300AGL-T safely drive inductive loads such as relays or solenoids without additional protection circuitry?
No, the MAX7300AGL-T should not directly drive inductive loads without external protection. Although it supports up to 10mA sink current per pin, inductive kickback from relays or solenoids can generate voltage spikes that exceed the device’s absolute maximum ratings and damage the open-drain or push-pull outputs. Always use flyback diodes (e.g., 1N4148 or BAT54) across inductive loads and consider isolating the load with a small-signal MOSFET or optocoupler. For higher-current applications, drive a buffer transistor instead of connecting the load directly to the MAX7300AGL-T output pins.
How does the MAX7300AGL-T compare to the PCA9535DBQR for 28-channel I/O expansion in terms of reliability and integration complexity?
The MAX7300AGL-T offers higher channel count (28 vs. 16 on the PCA9535DBQR) and a wider supply voltage range (2.5V–5.5V vs. 2.3V–5.5V), making it better suited for mixed-voltage systems. However, the PCA9535DBQR includes built-in polarity inversion and stronger I2C pull-up recommendations, which simplify firmware and improve noise immunity in dense layouts. The MAX7300AGL-T’s exposed pad package (40-SQFN) provides better thermal performance but requires careful PCB thermal relief design. For mission-critical applications, the MAX7300AGL-T’s extended temperature rating gives it an edge, but the PCA9535DBQR may reduce BOM complexity if fewer I/Os are acceptable.
What layout considerations are critical when replacing a through-hole I/O expander with the surface-mount MAX7300AGL-T in an existing design?
Replacing a through-hole device with the MAX7300AGL-T (40-SQFN, 6x6mm) demands attention to thermal and electrical layout. The exposed pad must be soldered to a grounded copper pour with multiple vias to dissipate heat and ensure stable operation—especially important given its MSL 3 rating. Maintain 50Ω impedance control on I2C lines if routing over long distances, and keep signal traces short to minimize capacitance. Ensure the new footprint matches the 0.5mm pitch; use stencil-controlled solder paste to avoid bridging. Also verify that your reflow profile accommodates the 168-hour floor life post-baking, as moisture sensitivity could lead to package cracking during assembly.
Is the MAX7300AGL-T suitable for automotive applications, and what qualification gaps should engineers address before design-in?
While the MAX7300AGL-T operates from -40°C to 125°C and is manufactured by a reputable supplier (Analog Devices/Maxim), it lacks AEC-Q100 qualification, which is typically required for automotive use. Additionally, its RoHS non-compliant status and REACH Affected designation may conflict with automotive environmental standards. If used in non-safety-critical infotainment or lighting subsystems, it may be acceptable with rigorous derating and EMC testing. However, for powertrain or ADAS-related functions, consider AEC-Q100-qualified alternatives like the MAX7313AENG+ or TI’s TCA6424ARGJR. Always perform full system-level ESD and transient immunity testing if deploying the MAX7300AGL-T in automotive environments.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
MAX7300AGL-T CAD Models
Analog Devices Inc./Maxim Integrated MAX7300AGL-T PCB symbols & footprints
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