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Data Sheet

FULL DATA SHEET (PDF, 212kB) Download   E-Mail

Description

The MAX7319 2-wire serial-interfaced peripheral features eight input ports with selectable internal pullups, overvoltage protection to +6V, and transition detection with interrupt output. All input ports are continuously monitored for state changes (transition detection). Transitions are latched, allowing detection of transient changes. Any combination of inputs can be selected using the interrupt mask to assert the active-low INT output. When the MAX7319 is subsequently accessed through the serial interface, any pending interrupt is cleared. The +5.5V tolerant active-low RST input clears the serial interface, terminating any I²C communication to or from the MAX7319. The MAX7319 uses two address inputs with four-level logic to allow 16 I²C slave addresses. The slave address also enables or disables internal 40kΩ pullups in groups of four ports. The MAX7319 supports hot insertion. All eight input ports, the serial interface SDA, SCL, AD0, AD2, active-low INT, and active-low RST remain high impedance in power-down (V+ = 0) with up to +6V asserted on them. The MAX7319 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. The MAX7319 is available in 16-pin QSOP and 16-pin TQFN packages, and is specified over the automotive temperature range (-40°C to +125°C).

Key Features		Applications/Uses
400kHz, +5.5V-Tolerant I²C Serial Interface +1.71V to +5.5V Operating Voltage Eight Input Ports with Maskable, Latching Transition Detection Input Ports are Overvoltage Protected to +6V Transient Changes are Latched, Allowing Detection Between Read Operations Active-Low INT Output Alerts Change on Any Selection of Inputs AD0 and AD2 Inputs Select from 16 Slave Addresses Low 0.6µA (typ) Standby Current -40°C to +125°C		Automotive Cell Phones Notebooks SAN/NAS Satellite Radio Servers

Diagram

Typical Application Circuit

Application Notes

Application Note 3814: Port Expanders for Flip-Cell Phones Save Cost and Space - MAX7319 Application Note 4024: SPI/I²C Bus Lines Control Multiple Peripherals - MAX7319

Evaluation Kits

MAX7319EVKIT

Design Guides

Interface (PDF) Low-Power Notebook ICs (PDF) Displays (PDF) Flat-Panel Display (PDF)

Reliability Reports

Show FIT data for: MAX7319 Request Reliability Report for: MAX7319

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
MAX7319	Free Sample	Buy	Package: TYPE PINS FOOTPRINT   DRAWING CODE/VAR *	Temp	RoHS/Lead-Free? Materials Analysis
MAX7319AEE+			QSOP;16 pin;31 mm² Outline Drawing: 21-0055 (PDF) Land Pattern: 90-0167 (PDF) Use pkgcode/variation: E16+4*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX7319AEE+T			QSOP;16 pin;31 mm² Outline Drawing: 21-0055 (PDF) Land Pattern: 90-0167 (PDF) Use pkgcode/variation: E16+4*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX7319AEE			QSOP;16 pin;31 mm² Outline Drawing: 21-0055 (PDF) Land Pattern: 90-0167 (PDF) Use pkgcode/variation: E16-4*	-40°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX7319AEE-T			Land Pattern: Not Available	-40°C to +125°C	See data sheet
MAX7319ATE+			TQFN;16 pin;10 mm² Outline Drawing: 21-0136 (PDF) Land Pattern: 90-0031 (PDF) Use pkgcode/variation: T1633+4*	-40°C to +125°C	RoHS/Lead-Free: Lead Free Materials Analysis
MAX7319ATE+T			Land Pattern: Not Available	-40°C to +125°C	See data sheet
MAX7319ATE			TQFN;16 pin;10 mm² Outline Drawing: 21-0136 (PDF) Land Pattern: 90-0031 (PDF) Use pkgcode/variation: T1633-4*	-40°C to +125°C	RoHS/Lead-Free: No Materials Analysis
MAX7319ATE-T			Land Pattern: Not Available	-40°C to +125°C	See data sheet

More Information

Topmark Coding: MAX7319 New Product Press Release 2005-11-01

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