MIC1232 Просмотр технического описания (PDF) - Micrel
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MIC1232 Datasheet PDF : 6 Pages
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MIC2755
Absolute Maximum Ratings (Note 1)
Terminal Voltage
VCC ..........................................................–0.3V to +6.0V
All other inputs ...............................–0.3V to (VCC + 0.3V)
Input Current
VCC ...................................................................... 250mA
GND, all other inputs .............................................. 25mA
Lead Temperature (soldering, 10 sec.)...................... 300°C
Storage Temperature.................................. –65°C to 150°C
ESD Rating, Note 3
Micrel, Inc.
Operating Ratings (Note 2)
Operating Temperature Range
MIC1232M/N ............................................ –40°C to 85°C
Electrical Characteristics
VCC = 4.5V to 5.5V; TA = Operating Temperature Range, bold values indicate –40°C ≤ TA ≤ +85°C; unless noted
Parameter
Condition
Min Typ
Supply Voltage Range
Supply Current
/ST and /PBRST Input Levels
Input Leakage
Output Souce Current, RST
Output Sink Current, /RST. RST
VCC 5% Trip Point (Reset
Threshold Voltage)
VCC
ICC, (Note 4)
VIH, (Note 5)
VIL
IIL
VOH = 2.4V
VOL = 0.4V
TOL = GND
4.5
18
2.0
–0.3
1.0
10
2.0
10
4.5 4.62
VCC 10% Trip Point (Reset
Threshold Voltage)
TOL = VCC
4.25 4.37
Input Capacitance, /ST, TOL
Output Capacitance, /RST, RST
CIN, (Note 6)
COUT, (Note 6)
Max Units
5.5
V
40
µA
VCC+0.3 V
0.8
V
±1
µA
mA
mA
4.74
V
4.49
V
5
pF
7
pF
AC Electrical Characteristics
VCC = 4.5V to 5.5V; TA = Operating Temperature Range, bold values indicate –40°C ≤ TA ≤ +85°C; unless noted
/PBRST Min. Pulse Width, tPB
/PBRST = VIL (Note 7)
20
ms
/PBRST Delay, tPBD
1
4
20
ms
Reset Active Time, tRST
250 610 1000 ms
/ST Pulse Width, tST
20
ms
/ST Timeout Period, tTD
TD = 0V
62.5 150 250 ms
TD = Open
250 600 1000 ms
VCC Fall Time, tF
VCC Rise Time, tR
VCC Detect to /RST Low
and RST High, tRPD
VCC Detect to /RST Low
and RST Low, tRPD
TD = VCC
VCC Falling (Note 8)
VCC Falling (Note 9)
500 1200 2000 ms
10
µs
0
ns
50
150
µs
250 610 1000 µs
Note 1. Exceeding the absolute maximum rating may damage the device.
Note 2. The device is not guaranteed to function outside its operating rating.
Note 3. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF.
Note 4.
Note 5.
Note 6.
ICC is measured with outputs open and inputs within 0.5V of supply rails
/PBRST has an internal pull-up resistor to VCC (typ. 40kΩ)
Guaranteed by design
Note 7. /PBRST must be held low for a minimum of 20ms to guarantee a reset
Note 8. VCC falling at 1.66mV/µs
Note 9. /RST has an open drain output
January 2006
3
MIC1232
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