Datasheet
2002-2012 Microchip Technology Inc. DS20092B-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 µA
Low Level Output Voltage V
OL
—— 0.4 VI
OL
= +2 mA
Input Current I
IN(0),
I
IN(1)
-1.0
-1.0
—
—
+1.0
+1.0
µA 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
µA 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
—— 100ns
CS
High to Data Out
Tr i - st a te
t
DIS
—— 200ns
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
JA
—230 —°C/W
Thermal Resistance, 8L-SOIC
JA
—163 —°C/W
DC CHARACTERISTICS (CONTINUED)
Electrical Specifications: Unless otherwise noted, all parameters apply at V
DD
= 2.7V to 5.5V and
T
A
= -55°C to +125°C.
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°C – -256°C) / (2
13
)
Resolution = 512/8192 = 0.0625°C/Bit