MIC2777
Micrel, Inc.
Absolute Maximum Ratings
(Note 1)
Supply Voltage (V
DD
).......................................–0.3V to +7V
Input Voltage (V
IN
) ...........................................–0.3V to +7V
RST, (/RST) Current ................................................... 20mA
Storage Temperature (T
S
) ........................ –65°C to +150°C
ESD Rating,
Note 3
.................................................... 1.5kV
Operating Ratings
(Note 2)
Supply Voltage (V
DD
) .................................. +1.5V to +5.5V
Input Voltage
(V
IN
) .............................................................–0.3V to +6.0V
Ambient Temperature Range (T
A
) .............. –40°C to +85°C
Package Thermal Resistance (θ
JA
) ....................... 256°C/W
Electrical Characteristics
Note 5;
T
A
= +25°C,
bold
values indicate –40°C ≤ T
A
≤ +85°C; unless noted
Symbol
Parameter
Condition
I
DD
Supply Current
V
DD
= V
IN
Note 5;
/MR, RST, /RST open
V
TH
-1.5%
Min
Typ
3.5
Max
Units
µA
VDD VOLTAGE THRESHOLD
V
HYST
V
REF
I
IN
Under-Voltage Threshold On V
DD
Hysteresis Voltage
V
TH
1
V
TH
+1.5%
V
%
mV
mV
pA
10
20
nA
µs
IN, UNDER-VOLTAGE DECTECTOR INPUT
Under-Voltage Threshold
Hysteresis Voltage
Input Current
T
MIN
≤ T
A
≤ T
MAX
V
IN
= (V
REF(MAX)
+ 100mV) to
V
IN
= (V
REF(MIN)
– 100mV) or
V
DD
= (V
TH
+ 2.5%) to (V
TH
– 2.5%), V
IN
=V
DD
I
SINK
= 1.6mA;
V
DD
≥ 1.6V
295
300
3
5
305
V
HYST
RST, /RST OUTPUTS
t
PROP
t
RST
V
OL
Propagation Delay
Reset Pulse Width
RST or /RST Output Voltage Low
140
280
0.3
0.3
ms
V
V
V
V
V
OH
RST or /RST Output Voltage High
RST asserted, I
SOURCE
= 10µA;
V
DD
≥ 1.2V,
Note 4
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.
I
SOURCE
= 500µA;
V
DD
≥ 1.5V
I
SINK
= 100µA;
V
DD
≥ 1.2V,
Note 4
0.8V
DD
0.8V
DD
Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.
V
DD
operating range is 1.5V to 5.5V. Output is guaranteed to be asserted down to V
DD
= 1.2V.
V
DD
equals the nominal “Typical Application (V
DD
)” as shown in “Standard Voltage Options Table.”
November 2005
3
MIC2777
MICREL [ MICREL SEMICONDUCTOR ]
