MAX7313ATG+T

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MAX7313ATG+T

IC I/O EXPANDER I2C 16B 24TQFN

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規格

Supplier Analog Devices Inc./Maxim Integrated
Package Tape & Reel (TR),Cut Tape (CT)
ProductStatus Active
NumberofI/O 16
Interface I²C, SMBus
InterruptOutput Yes
Features PWM
OutputType Open Drain
Current-OutputSource/Sink 50mA
ClockFrequency 400 kHz
Voltage-Supply 2V ~ 3.6V
OperatingTemperature -40°C ~ 125°C
MountingType Surface Mount
Package/Case 24-WFQFN Exposed Pad

概述

Description

The MAX7313ATG+T is Maxim’s (now Analog Devices) 8-bit I/O expander with an I2C bus interface. It lets a microcontroller extend its I/O pins over two wires, freeing MCU pins for other tasks.
Key points
- 8 bidirectional I/O pins configurable as input or output.
- I2C-compatible serial interface; supports multiple devices on the same bus (addressable via hardware pins).
- Interrupt output for change detection (INT).
- Simple register map to control direction, read inputs, write outputs, and manage interrupts.
- RoHS-compliant package (ATG) in Tape & Reel (+T) packaging.
Typical uses
- Expand GPIOs for sensors, keypads, LEDs, or other peripherals.
- Systems requiring hardware interrupt signaling on I/O changes.
- Microcontroller I/O augmentation in compact boards.
Note: Check the datasheet for exact electrical specs (voltage range, timing, register names) and pinout for the specific package variant.

Features

Key features of MAX7313ATG+T (LED driver)
- 8-channel constant-current LED sink outputs
- I2C-compatible serial interface (SCL/SDA), 7-bit slave address; supports standard/fast modes
- Programmable current per channel via I2C registers (typical range ~1–50 mA)
- Supports multiplexed 8-digit/8-segment LED displays
- Global brightness and per-channel dimming controls (PWM/dimming)
- Simple register-based data writes with auto-increment for quick updates
- Wide supply voltage: 2.7 V to 5.5 V
- RoHS-compliant, lead-free package; ATG+T indicates packaging (Tape & Reel)
Note: Exact current range and timing are per the datasheet; consult for precise register maps and voltage limits.

Package

MAX7313ATG+T is in a 16-pin TSSOP package (Pb-free/RoHS compliant).

Pinout

- Pin count: 16 pins (package variant indicated by ATG+T suffix).
- Function: I2C 8-bit I/O expander (8 GPIO lines accessible via I2C; configurable as input/output).

Manufacturer

- Manufacturer: Maxim Integrated Products (now part of Analog Devices).
- What kind of company: An American multinational semiconductor company that designs and manufactures analog, mixed-signal, and digital integrated circuits.

Application

Eight-channel I/O expander (I2C) for remote GPIO in embedded systems. Applications: add GPIO to microcontrollers; drive indicators/LEDs; keypad/switch scanning; interface to relays, optocouplers and sensors; suitable for industrial, automotive and consumer electronics needing extra programmable I/O; rapid prototyping and development boards.

Equivalent

There isn’t an exact cross‑reference for MAX7313ATG+T. It’s a GPIO I/O expander. Closest equivalents:
- Microchip: MCP23008 (I2C, 8‑bit); MCP23017 (I2C, 16‑bit); MCP23S17 (SPI, 16‑bit)
- NXP/ Philips: PCA9534 (I2C, 8‑bit); PCA9555 (I2C, 16‑bit); PCF8574/PCF8575 (I2C, 8/16‑bit)
- TI: TCA9534/TCA9555 (I2C)
Note: not pin/voltage compatible; check datasheets for exact features.

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