MIC2755BMM(2000) Просмотр технического описания (PDF) - Micrel
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MIC2755BMM Datasheet PDF : 12 Pages
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MIC2755
Micrel
Absolute Maximum Ratings (Note 1)
Operating Ratings (Note 2)
Supply Voltage (VDD) ..................................... –0.3V to +7V
Input Voltage (VRTH), (VNTH), (VPTH) ............. –0.3V to +7V
Output Voltage (V/RST), (V/NMI), (V/POF) ........ –0.3V to +7V
/RST Output Current (I/RST) ....................................... 20mA
Storage Temperature (TS) ....................... –65°C to +150°C
ESD Rating, Note 3 ...................................................... 2kV
Electrical Characteristics
Supply Voltage (VDD) .................................. +1.5V to +5.5V
Input Voltage (VRTH), (VNTH), (VPTH) ............. –0.3V to +6V
Output Voltage (V/RST), (V/NMI), (V/POF) ........ –0.3V to +6V
Ambient Temperature Range (TA) ............. –40°C to +85°C
Package Thermal Resistance
1-layer PCB (θJA) .............................................. 206°C/W
4-layer PCB (θJA) .............................................. 113°C/W
VDD = 3.3V; TA = 25°C, bold values indicate –40°C ≤ TA ≤ +85°C; unless noted
Symbol
Parameter
Condition
Min Typ Max Units
IDD
Operating Supply Current
IRTH(/MR),
INTH, IPTH,
I/RST, I/NMI,
I/POF
VREF1
VREF2
VHYST
Leakage Current
Threshold Voltage
Threshold Voltage
Hysteresis Voltage on NTH
Comparator
outputs open, VRTH, VNTH, VPTH > 1.24V
outputs open, VRTH, VNTH, VPTH < 1.24V
2.0
4.0
µA
1.7
µA
5
pA
10
nA
for RTH(/MR) and PTH inputs
for NTH inputs
1.215 1.240 1.265 V
1.215 1.240 1.265 V
20
mV
Reset Output (/RST)
t/RST
Reset Pulse Width
700
t/MR
Manual Reset Pulse Width
175
V/RST
/RST Output Voltage Low, Note 4 /RST asserted, ISINK = 1.6mA, VDD ≥ 1.6V
/RST asserted, ISINK = 100µA, VDD ≥ 1.2V
Reset Input [RTH(/MR)]
1200 ms
300 ms
0.3
V
0.4
V
V/MRTV
tDBNC
tPROP
Manual Reset Trip Voltage
Debounce Time
Propogation Delay
V/MRTV(min) < VRTH < V/MRTV(max), Note 5
from (V/MR < VRTH(/MR)(min) – 100mV)
to RST Asserted
275 310 345 mV
22
38
ms
9
µs
Nonmaskable Interrupt Output (/NMI)
tPROP
Propagation Delay
(VREF(max) + 100mV) < VNTH < (VREF(min)
– 100mV)
9
µs
V/NMI
/NMI Output Voltage Low
Power-Off Output (/POF)
/NMI asserted, ISINK = 1.6mA, VDD ≥ 1.6V
/NMI asserted, ISINK = 100µA, VDD ≥ 1.2V
0.3
V
0.4
V
tPROP
Propagation Delay
(VREF(max) + 100mV) < VPTH < (VREF(min)
– 100mV)
9
µs
V/POF
/POF Output Voltage Low
/POF asserted, ISINK = 1.6mA, VDD ≥ 1.6V
/POF asserted, ISINK = 100µA, VDD ≥ 1.2V
0.3
V
0.4
V
Note 1.
Note 2.
Note 3.
Note 4.
Note 5.
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, 100pF in series with 1.5k .
VDD operating range is 1.5V to 5.5V. Output is guaranteed to be held low down to VDD = 1.2V.
tDBNC =
t /RST
32
= t/MR .
8
These relationships are guaranteed by design.
February 2000
3
MIC2755
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