Data Sheet

MediaTek MT7681 Datasheet
3.3 DC Characteristics
Table 6 describes the DC characteristics of the MT7681.
Symbol Parameter Conditions Minimum Maximum Unit
V
IL
Input Low Voltage LVTTL -0.28 0.6 V
V
IH
Input High Voltage 2.0 3.63 V
V
T-
Schmitt Trigger Negative
Transition Threshold Voltage
LVTTL 0.68 1.36 V
V
T+
Schmitt Trigger Positive
Transition Threshold Voltage
1.36 1.7 V
V
OL
Output Low Voltage |I
OL
| = 1.6~14 mA -0.28 0.4 V
V
OH
Output High Voltage |I
OH
| = 1.6~14 mA 2.4 VDD33+0.33 V
R
PU
Input Pull-Up Resistance PU=high, PD=low 40 190 KΩ
R
PD
Input Pull-Down Resistance PU=low, PD=high 40 190 KΩ
Table 6 DC characteristics
3.4 Thermal Characteristics
Table 7 shows the thermal characteristics of the MT7681.
Symbol Description Performance
Typical Unit
T
J
Maximum Junction Temperature (Plastic Package) 125 °C
Θ
JA
Junction to ambient temperature thermal resistance
[1][2]
48.11 °C/W
Θ
JC
Junction to case temperature thermal resistance TBD °C/W
Ψ
Jt
Junction to the package thermal resistance
[3]
3.23 °C/W
Notes:
[1] Air flow condition: Natural convection, 0.5m/s.
[2] PCB dimension 21mm x 11mm. 4-layer.
[3] 5mm x 5mm QFN40L package
Table 7 Thermal characteristics
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