UPD720130 Datasheet, PDF (16/44 Pages) NEC – USB2.0 to IDE Bridge

µPD720130
3.2 Terminology
Terms Used in Absolute Maximum Ratings
Parameter
Symbol
Meaning
Power supply voltage
VDD33, VDD25 Indicates voltage range within which damage or reduced reliability will not result when
power is applied to a VDD pin.
Input voltage
VI
Indicates voltage range within which damage or reduced reliability will not result when
power is applied to an input pin.
Output voltage
VO
Indicates voltage range within which damage or reduced reliability will not result when
power is applied to an output pin.
Output current
IO
Indicates absolute tolerance value for DC current to prevent damage or reduced
reliability when a current flows out of or into an output pin.
Operating temperature
TA
Indicates the ambient temperature range for normal logic operations.
Storage temperature
Tstg
Indicates the element temperature range within which damage or reduced reliability
will not result while no voltage or current are applied to the device.
Terms Used in Recommended Operating Range
Parameter
Symbol
Meaning
Power supply voltage
VDD33, VDD25 Indicates the voltage range for normal logic operations occur when VSS = 0 V.
High-level input voltage
VIH
Indicates the voltage, which is applied to the input pins of the device, is the voltage
indicates that the high level states for normal operation of the input buffer.
* If a voltage that is equal to or greater than the “Min.” value is applied, the input
voltage is guaranteed as high level voltage.
Low-level input voltage
VIL
Indicates the voltage, which is applied to the input pins of the device, is the voltage
indicates that the low level states for normal operation of the input buffer.
* If a voltage that is equal to or lesser than the “Max.” value is applied, the input
voltage is guaranteed as low level voltage.
Hysteresys voltage
VH
Indicates the differential between the positive trigger voltage and the negative trigger
voltage.
Input rise time
tri
Indicates allowable input rise time to input pins. Input rise time is transition time from
0.1 × VDD to 0.9 × VDD.
Input fall time
tfi
Indicates allowable input fall time to input pins. Input fall time is transition time from
0.9 × VDD to 0.1 × VDD.
Terms Used in DC Characteristics
Parameter
Symbol
Off-state output leakage
IOZ
current
Output short circuit current IOS
Input leakage current
II
Low-level output current
IOL
High-level output current
IOH
Meaning
Indicates the current that flows from the power supply pins when the rated power
supply voltage is applied when a 3-state output has high impedance.
Indicates the current that flows when the output pin is shorted (to GND pins) when
output is at high-level.
Indicates the current that flows when the input voltage is supplied to the input pin.
Indicates the current that flows to the output pins when the rated low-level output
voltage is being applied.
Indicates the current that flows from the output pins when the rated high-level output
voltage is being applied.
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Data Sheet S16302EJ3V0DS