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Data Sheet

FULL DATA SHEET (PDF, 360kB) Download   E-Mail

Description

The MAX7325 2-wire serial-interfaced peripheral features 16 I/O ports. Ports are divided into eight push-pull outputs and eight I/Os with selectable internal pullups and transition detection. Eight ports are push-pull outputs and eight I/Os may be used as a logic input or an open-drain output. Ports are overvoltage protected to +6V. All I/O ports configured as inputs are continuously monitored for state changes (transition detection). State changes are indicated by the active-low INT output. The interrupt is latched, allowing detection of transient changes. When the MAX7325 is subsequently accessed through the serial interface, any pending interrupt is cleared. The open-drain outputs are rated to sink 20mA, and are capable of driving LEDs. The active-low RST input clears the serial interface, terminating any I²C communication to or from the MAX7325. The MAX7325 uses two address inputs with four-level logic to allow 16 I²C slave addresses. The slave address also determines the power-up logic state for the I/O ports, and enables or disables internal 40kΩ pullups in groups of four ports. The MAX7325 is one device in a family of pin-compatible port expanders with a choice of input ports, open-drain I/O ports, and push-pull output ports (see Table 1 of the full data sheet). The MAX7325 is available in 24-pin QSOP and TQFN packages and is specified over the -40°C to +125°C automotive temperature range.

Key Features		Applications/Uses
400kHz I²C Serial Interface +1.71V to +5.5V Operating Voltage 8 Push-Pull Output Ports 8 Open-Drain I/O Ports, Rated at 20mA Sink Current I/O Ports are Overvoltage Protected to +6V Selectable I/O Port Power-Up Default Logic States Transient Changes are Latched, Allowing Detection Between Read Operations Active-Low INT Output Alerts Changes on Inputs AD0 and AD2 Inputs Select from 16 Slave Addresses Low 0.6µA (typ) Standby Current -40°C to +125°C Temperature Range		Automotive Cell Phones Notebooks SAN/NAS Satellite Radio Servers

Diagram

Typical Application Circuit

Evaluation Kits

MAX7325EVCMAXQU, MAX7325EVKIT

Design Guides

Displays (PDF)

Reliability Reports

Show FIT data for: MAX7325 Request Reliability Report for: MAX7325

Software/Models

none

Ordering Information
Notes: Other options and links for purchasing parts are listed at: http://www.maxim-ic.com/sales. Didn't Find What You Need? Ask our applications engineers. Expert assistance in finding parts, usually within one business day. Part number suffixes: T or T&R = tape and reel; + = RoHS/lead-free; # = RoHS/lead-exempt. More: SeeFull Data Sheet or Part Naming Conventions. * Some packages have variations, listed on the drawing. "PkgCode/Variation" tells which variation the product uses. Note that "+", "#", "-" in the part number suffix describes RoHS status. Package drawings may show a different suffix character.
Devices: 1-8 of 8
MAX7325	Free Sample	Buy	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX7325AEG+			QSOP;24 pin;54 mm² Outline Drawing: 21-0055 (PDF) Land Pattern: 90-0172 (PDF) Use pkgcode/variation: E24+1*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX7325AEG+T			QSOP;24 pin;54 mm² Outline Drawing: 21-0055 (PDF) Land Pattern: 90-0172 (PDF) Use pkgcode/variation: E24+1*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX7325AEG			QSOP;24 pin;54 mm² Outline Drawing: 21-0055 (PDF) Land Pattern: 90-0172 (PDF) Use pkgcode/variation: E24-1*	-40°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX7325AEG-T			QSOP;24 pin;54 mm² Outline Drawing: 21-0055 (PDF) Land Pattern: 90-0172 (PDF) Use pkgcode/variation: E24-1*	-40°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX7325ATG+			TQFN;24 pin;17 mm² Outline Drawing: 21-0139 (PDF) Land Pattern: 90-0022 (PDF) Use pkgcode/variation: T2444+4*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX7325ATG+T			TQFN;24 pin;17 mm² Outline Drawing: 21-0139 (PDF) Land Pattern: 90-0022 (PDF) Use pkgcode/variation: T2444+4*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX7325ATG			TQFN;24 pin;17 mm² Outline Drawing: 21-0139 (PDF) Land Pattern: 90-0022 (PDF) Use pkgcode/variation: T2444-4*	-40°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX7325ATG-T			Land Pattern: Not Available	-40°C to +125°C	See data sheet

Related Products

MAX7322 I²C Port Expander with 4 Push-Pull Outputs and 4 Inputs MAX7327 I²C Port Expander with 12 Push-Pull Outputs and 4 Open-Drain I/Os MAX7319 I²C Port Expander with Eight Inputs and Maskable Transition Detection MAX7326 I²C Port Expander with 12 Push-Pull Outputs and Four Inputs MAX7320 I²C Port Expander with Eight Push-Pull Outputs MAX7321 I²C Port Expander with 8 Open-Drain I/Os MAX7324 I²C Port Expander with Eight Push-Pull Outputs and Eight Inputs MAX7323 I²C Port Expander with 4 Push-Pull Outputs and 4 Open-Drain I/Os MAX7328, MAX7329 I²C Port Expanders with Eight I/O Ports

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