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MIC74

Status: In Production

Features:

  • Provides eight bits of general purpose I/O
  • Built in fan speed control logic (optional)
  • 2-wire SMBus™/I2C™ compatible serial interface plus interrupt output
  • 2.7V to 3.6V operating voltage range
  • 5V-tolerant I/O
  • Low quiescent current: 2µA (typical)
  • Bit-programmable I/O options:
  • Input or output
  • Push-pull or open-drain output
  • Interrupt on input changes
  • Outputs can directly drive LEDs (10mA IOL)
  • Up to 8 devices per bus
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Overview
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Development Environment
Similar Devices
RoHS Information
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Device Overview

Summary

The MIC74 is a fully programmable serial-to-parallel I/O expander compatible with the SMBus™ (system management bus) protocol. It acts as a "slave" on the bus, providing eight independent I/O lines. Each I/O bit can be individually programmed as an input or output. If programmed as an output; each I/O bit can be programmed as an open-drain or complementary push-pull output. If desired, the four most significant I/O bits can be programmed to implement fan speed control. An internal clock generator and state machine eliminate the overhead generally associated with "bit-banging" fan speed control. Programming the device and reading/writing the I/O bits is accomplished using seven internal registers. All registers can be read by the host. Output bits are capable of directly driving high-current loads such as LEDs. A separate interrupt output can notify the host of state changes on the input bits without requiring the MIC74 to perform a transaction on the serial bus or be polled by the host. Three address selection inputs are provided, allowing up to eight devices to share the same bus and provide a total of 64 bits of I/O. The MIC74 is available in an ultra-small-footprint 16-pin QSOP. Low quiescent current, small footprint, and low package height make the MIC74 ideal for portable and desktop applications.

Additional Features
    • Provides eight bits of general purpose I/O
    • Built in fan speed control logic (optional)
    • 2-wire SMBus™/I2C™ compatible serial interface plus interrupt output
    • 2.7V to 3.6V operating voltage range
    • 5V-tolerant I/O
    • Low quiescent current: 2µA (typical)
    • Bit-programmable I/O options:
      • Input or output
      • Push-pull or open-drain output
      • Interrupt on input changes
    • Outputs can directly drive LEDs (10mA IOL)
    • Up to 8 devices per bus

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MIC74YQS
0.083600
0.160000
16
QSOP
3.90mm(.150in)
Matte Tin
e3
MIC74YQS-TR
0.083600
0.320000
16
QSOP
3.90mm(.150in)
Matte Tin
e3
MIC7401YFL-TR
N/A
0.827051
36
VQFN
4.5x4.5x0.9mm
Matte Tin
e3
MIC7400YFL-T5
N/A
0.827051
36
VQFN
4.5x4.5x0.9mm
Matte Tin
e3
MIC7401YFL-T5
N/A
0.827051
36
VQFN
4.5x4.5x0.9mm
Matte Tin
e3
MIC7400YFL-TR
N/A
0.827051
36
VQFN
4.5x4.5x0.9mm
Matte Tin
e3
MIC7400-0005YFL
N/A
0.000000
36
VQFN
4.5x4.5x0.9mm
Matte Tin
e3
MIC7400
N/A
0.000000
36
VQFN
4.5x4.5x0.9mm
Matte Tin
e3
MIC7401
N/A
0.000000
36
VQFN
4.5x4.5x0.9mm
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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