MIC2774_05 Datasheet, PDF (2/8 Pages) Micrel Semiconductor – Dual Micro-Power Low Voltage Supervisor

MIC2774
Standard Voltage Options*
Voltage
Code
46
Typical
Application (V_DD)
5.0V ±5%
Nominal Threshold
Voltage (V_TH)
4.68
44
5.0V ±10%
4.43
31
3.3V ±5%
3.09
29
3.3V ±10%
2.93
28
3.0V ±5%
2.81
26
2.85V ±5%
2.67
25
2.70V ±5%
2.53
23
2.5V ±5%
2.34
22
2.4V ±5%
2.25
17
1.8V ±5%
1.69
*There are ten standard versions available with an order increment of 3000 pieces. Samples of standard versions are
normally available from stock. Contact factory for information on non-standard versions. Available in tape-and-reel only.
Micrel
Pin Configuration
/MR GND RST
3
2
1
4
5
IN
VDD
SOT-23-5 (M5)
“H” Version
/MR GND /RST
3
2
1
4
5
IN
VDD
SOT-23-5 (M5)
“L” and “N” Version
Pin Description
Pin Number
MIC2774H
Pin Number
MIC2774L
MIC2774N
1
1
2
2
3
3
4
4
5
5
Pin Name
RST
/RST
GND
/MR
IN
VDD
Pin Function
Digital (Output): Asserted high whenever V_IN or V_DD falls below the threshold
voltage. It will remain asserted for no less than 140ms after V_IN and V_DD
return above the threshold limits.
Digital (Output): Asserted low whenever V_IN or V_DD falls below the threshold
voltage. It will remain asserted for no less than 140ms after V_IN and V_DD
return above the threshold limits. (open-drain for “N” version)
Ground
Digital (Input): Driving this pin low initiates immediate and unconditional re-
set. Assuming V_IN and V_DD are above the thresholds when /MR is released
(returns high), the reset output will be de-asserted no less than 140ms later.
/MR may be driven by a logic signal or a mechanical switch. /MR has an
internal pull-up to V_DD and may be left open if unused.
Analog (Input): The voltage on this pin is compared to the internal 300mV
reference. An under-voltage condition will trigger a reset sequence.
Analog (Input): Power supply input for internal circuitry and input to the fixed
voltage monitor. The voltage on this pin is compared against the internal
reference. An undervoltage condition will trigger a reset sequence.
M9999-102605
2
October 2005