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?2002 Microchip Technology Inc.
DS20092A-page 3
TC77
Digital Input/Output
High Level Input Voltage
V
IH
0.7 V
DD

V
DD
+ 0.3
V
Low Level Input Voltage
V
IL
-0.3

0.3 V
DD
V
High Level Output Voltage
V
OH
2.4


V
I
OH
 = -400 礎
Low Level Output Voltage
V
OL


0.4
V
I
OL
= +2 mA
Input Current
I
IN(0),
I
IN(1)
-1.0
-1.0


+1.0
+1.0
礎
V
IN
 = GND
V
IN
 = V
DD
Input Hysteresis
0.35
0.8

V
SI/O, SCK
Pin Capacitance
C
IN
, C
OUT

20

pF
Tri-state Output Leakage
Current
I
O_LEAK
-1.0




+1.0
礎
V
O
 = GND
V
O
 = V
DD
Serial Port AC Timing (Notes 2, 3)
Clock Frequency
f
CLK
DC

7.0
MHz
CS
 Fall to First Rising SCK
Edge
t
CS-SCK
100


ns
CS
 Low to Data Out Delay
t
CS-SI/O


70
ns
SCK Fall to Data Out Delay
t
DO


100
ns
CS
 High to Data Out
Tri-state
t
DIS


200
ns
SCK High to Data In Hold Time
t
HD
50


ns
Data In Set-up Time
t
SU
30


ns
Thermal Package Resistance
Thermal Resistance, SOT23-5
?/DIV>
JA

230

癈/W
Thermal Resistance, 8L-SOIC
?/DIV>
JA

163

癈/W
DC CHARACTERISTICS (CONTINUED)
Electrical Specifications: Unless otherwise noted, all parameters apply at V
DD
 = 2.7V to 5.5V and
T
A
 = -55癈 to +125癈.
Parameters
Sym
Min
Typ
Max
Units
Conditions
Note 1:  The TC77-3.3MXX and TC77-5.0MXX will operate from a supply voltage of 2.7V to 5.5V. However, the tem-
perature accuracy of the TC77-3.3MXX and TC77-5.0MXX is specified at the nominal operating voltages of
3.3V and 5.0V, respectively. As V
DD
 varies from the nominal operating value, the accuracy may be
degraded (Refer to Figures 2-6 and 2-7).
2:  All time measurements are measured with respect to the 50% point of the signal.
3:  Load Capacitance, C
L
 = 80 pF, is used for AC timing measurements of output signals.
4:  Resolution = Temperature Range/No. of Bits = (+255?/SPAN>C  -256?/SPAN>C) / (2
13
)
Resolution = 512/8192 = 0.0625癈/Bit
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