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MIC2788/89 Push Button Reset IC


Micrel's MIC2788 and MIC2789 are low-current, ultra-small, pushbutton reset supervisors with two manual reset inputs and two reset outputs


Micrel's MIC2788/89 Push Button Reset ICMicrel's MIC2788 and MIC2789 are low-current, ultra-small, pushbutton reset supervisors with long set-up delays. The devices feature two manual reset inputs and two reset outputs. The devices initiate a reset for the reset timeout period when the /MR0 and /MR1 inputs are asserted low for a period longer than the set-up delay. The two manual reset inputs and long set-up period help to avoid unintended system resets. Both manual reset inputs can be tied together if a single push-button reset is desired.

The MIC2788 features integrated pull-up resistors on the /MR0 and /MR1 inputs, while the MIC2789 requires external pull-up resistors. The PDY input pin selects between a 2 s, 4 s, or 6 s set-up period. Factory-programmed reset timeout periods of 140 ms (minimum) and 240 ms (minimum) are available. An active-low, open-drain reset output (/RST) and an active-high, push-pull reset output (RSTP) provide flexibility when interfacing to various microcontrollers, PMICs, or load switches.

Features Applications
  • 1.6 V to 5.5 V operating voltage
  • 2.9 µA supply current when /MR0, /MR1 are not asserted
  • Asserting /MR0 and /MR1 for longer than set-up delay asserts reset output for the reset timeout period
  • Programmable delay (PDY) input selects 2.0 s or 6.0 s set-up delay
  • Factory-programmed 140 ms or 240 ms (minimum) reset timeout period
  • Dual reset outputs:
    • Open-drain active-low reset (/RST) output
    • Push-pull active-high reset (RSTP) output
  • -40°C to +85°C ambient operating temperature range
  • 8-pin 2 mm x 2 mm x 0.55 mm thin MLF® package
  • Smart phones
  • MP3 players
  • Portable navigation devices
  • Set-top boxes (STBs)
  • Tablets/pads

Digi-Key P/N Manufacturer P/N Description
576-4007-1-ND MIC2788-XYMT TR IC DUAL PUSH BUTTON RESET 8MLF Datasheet
576-4008-1-ND MIC2789-XYMT TR IC DUAL PUSH BUTTON RESET 8MLF
Available in Tape & Reel (-2-ND), Cut Tape (-1-ND), and custom Digi-Reel® (-6-ND)