MIC811_05 Datasheet, PDF (4/7 Pages) Micrel Semiconductor – Microprocessor Reset Circuits

MIC811/812
Absolute Maximum Ratings^{(Note 1)}
Terminal Voltage (V_CC) .................................–0.3V to +6.0V
Input Current (V_CC, /MR) ............................................ 20mA
Output Current (/RESET, RESET).............................. 20mA
Lead Temperature (soldering, 10 sec.)...................... 300°C
Storage Temperature (T_S) .......................... –65°C to 150°C
Rate of Rise (V_CC).................................................. 100V/µs
ESD Rating, Note 3....................................................... 3kV
Micrel
Operating Ratings^{(Note 2)}
Operating Temperature Range
MIC811 ..................................................... –40°C to 85°C
MIC812 ..................................................... –40°C to 85°C
Power Dissipation (T_A = +70°C) .............................. 320mW
Electrical Characteristics
For typical values, V_CC = 5V for MIC8_L/M/J, V_CC = 3.3V for MIC8_S/T, V_CC = 3V for MIC8_R; T_A = 25°C, bold values indicate –40°C
≤ T_A ≤ +85°C; unless noted
Symbol
Parameter
Condition
Min Typ Max Units
V_CC
Operating Voltage Range
I_CC
Supply Current
V_TH
Reset Voltage Threshold
T_A = –40°C to 85°C
MIC811L/M/J, MIC812L/M/J:
V_CC = 5.0V, no load
MIC811S/T, MIC812S/T
V_CC = 3.3V, no load
MIC811R, MIC812R: V_CC = 3.0V, no load
MIC811L, MIC812L
MIC811M, MIC812M
1
5.5
V
5
15
µA
5
10
µA
5
10
µA
4.50 4.63 4.75
V
4.25 4.38 4.50
V
MIC811J, MIC812J
3.89 4.00 4.10
V
MIC811T, MIC812T
3.00 3.08 3.15
V
MIC811S, MIC812S
2.85 2.93 3.00
V
MIC811R, MIC812R
2.55 2.63 2.70
V
t_RST
Reset Timeout Period
140 240 560 ms
V_OH
/RESET Output Voltage
I_SOURCE = 800µA, MIC811L/M/J
V_CC–1.5V
V
I_SOURCE = 500µA, MIC811R/S/T
0.8×V_CC
V
V_OL
/RESET Output Voltage
V_CC = V_TH min., I_SINK = 3.2mA, MIC811L/M/J
0.4
V
V_CC = V_TH min., I_SINK = 1.2mA, MIC811R/S/T
0.3
V
V_CC > 1V, I_SINK = 50µA, T_A = –40° to +85°C
0.3
V
V_OH
RESET Output Voltage
1.8V < V_CC < V_TH min., I_SOURCE = 150µA
0.8×V_CC
V
V_OL
RESET Output Voltage
I_SINK = 3.2mA, MIC812L/M/J
0.4
V
I_SINK = 1.2mA, MIC812R/S/T
0.3
V
/MR Minimum Pulse Width
10
µs
/MR to Reset Delay
0.5
µs
V_IH
/MR Input Threshold
V_IL
/MR Input Threshold
/MR Pull-Up Resistance
V_CC > V_TH max., MIC81_L/M/J
MIC81_R/S/T
V_CC . V_TH max., MIC81-L/M/J
MIC81-R/S/T
2.3
V
0.7×V_CC
V
0.8
V
0.25×V_CC
10
20
30
kΩ
/MR Glitch Immunity
100
ns
Note 1.
Note 2.
Note 3.
Exceeding the absolute maximum rating may damage the device.
The device is not guaranteed to function outside its operating rating.
Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.
MIC811/812
4
September 2005