DS2251T View Datasheet(PDF) - Maxim Integrated
Part Name
Description
Manufacturer
DS2251T Datasheet PDF : 22 Pages
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DS2251T
ABSOLUTE MAXIMUM RATINGS
Voltage Range on Any Pin Relative to Ground……………………………………...-0.3V to (VCC + 0.5V)
Voltage Range on VCC Relative to Ground………………………………………………….-0.3V to +6.0V
Operating Temperature Range………………………………………………………………-40°C to +85°C
Storage Temperature (Note 1)……………………………………………………………..-55°C to +125°C
Soldering Temperature………………………………………………………………+260°C for 10 seconds
This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the
operation sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods of
time may affect reliability.
Note 1: Storage temperature is defined as the temperature of the device when VCC = 0V and VLI = 0V. In this state
the contents of SRAM are not battery backed and are undefined.
DC CHARACTERISTICS
(VCC = 5V ±10%, TA = 0˚C to +70˚C.)
PARAMETER
SYMBOL
Input Low Voltage
VIL
Input High Voltage
VIH1
Input High Voltage RST, XTAL1 PROG
VIH2
Output Low Voltage
at IOL = 1.6mA (Ports 1, 2, 3, PF )
VOL1
Output Low Voltage
at IOL = 3.2mA (Ports 0, ALE, PSEN ,
BA13:BA0, BD7:BD0, R/W, PE3:PE4)
VOL2
Output High Voltage
at IOH = -80µA (Ports 1, 2, 3)
VOH1
Output High Voltage
at IOH = -400µA (Ports 0, ALE, PSEN ,
PF , BA13:BA0, BD7:BD0, R/W,
PE3:PE4)
VOH2
Input Low Current
VIN = 0.45V (Ports 1, 2, 3)
IIL
Transition Current; 1 to 0
VIN = 2.0V (Ports 1, 2, 3)
ITL
Input Leakage Current
0.45 < VIN < VCC (Port 0)
IIL
RST Pulldown Resistor
RRE
VRST Pullup Resistor
RVR
PROG Pullup Resistor
RPR
Power-Fail Warning Voltage
VPFW
Minimum Operating Voltage
VCC(MIN)
Operating Current at 16MHz
ICC
MIN
-0.3
2.0
3.5
2.4
2.4
40
4.25
4.00
TYP
0.15
0.15
4.8
4.8
4.7
40
4.37
4.12
MAX
+0.8
VCC+0.3
VCC+0.3
0.45
0.45
-50
-500
±10
150
4.50
4.25
45
UNITS
V
V
V
V
V
V
V
µA
µA
µA
kΩ
kΩ
kΩ
V
V
mA
NOTES
1
1
1
1, 7
1
1
1
1
1
2
9 of 22
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