MIC2774 Micrel Semiconductor, MIC2774 Datasheet - Page 2

• Manufacturer Part Number: MIC2774
• Description: Dual Micro-Power Low Voltage Supervisor Advance Information
• Manufacturer: Micrel Semiconductor

MIC2774
Pin Configuration
Pin Description
MIC2774
Pin Number
MIC2774H
1
2
3
4
5
Standard Voltage Options*
*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.
Pin Number
MIC2774L
MIC2774N
/MR
2
3
4
5
1
SOT-23-5 (M5)
IN
3
4
“H” Version
Voltage
GND
Code
46
44
31
29
28
26
25
23
22
17
2
VDD
RST
1
5
Pin Name
/RST
GND
VDD
RST
/MR
IN
Pin Function
Digital (Output): Asserted high whenever V
old voltage. It will remain asserted for no less than 140ms after V
return above the threshold limits.
Digital (Output): Asserted low whenever V
voltage. It will remain asserted for no less than 140ms after V
return above the threshold limits. (open-drain for “N” version)
Ground
Digital (Input): Driving this pin low initiates immediate and unconditional
reset. Assuming V
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
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.
Application (V
5.0V ±10%
3.3V ±10%
2.85V ±5%
2.70V ±5%
5.0V ±5%
3.3V ±5%
3.0V ±5%
2.5V ±5%
2.4V ±5%
1.8V ±5%
Typical
2
DD
IN
)
and V
DD
are above the thresholds when /MR is
DD
“L” and “N” Version
and may be left open if unused.
Nominal Threshold
/MR
SOT-23-5 (M5)
IN
Voltage (V
3
4
IN
GND
IN
4.68
4.43
3.09
2.93
2.81
2.67
2.53
2.34
2.25
1.69
or V
2
or V
VDD
/RST
DD
DD
TH
1
5
falls below the threshold
)
falls below the thresh-
September 29, 2000
IN
and V
IN
and V
DD
Micrel
DD