Datasheet

TCN75
DS21490D-page 4  2001-2012 Microchip Technology Inc.
TIMING DIAGRAM
TCN75 ELECTRICAL SPECIFICATIONS (CONTINUED)
Electrical Characteristics: 2.7V  V
DD
 5.5V; -55°C  (T
A
= T
J
)  125°C, C
L
= 80 pF, unless otherwise noted.
Symbol Parameter Min Typ Max Unit Test Conditions
Serial Port Timing
f
SC
Serial Port Frequency 0 100 400 kHz
t
LOW
Low Clock Period 1250 — — nsec
t
HIGH
High Clock Period 1250 — — nsec
t
R
SCL and SDA Rise Time — — 250 nsec
t
F
SCL and SDA Fall Time — — 250 nsec
t
SU(START)
Start Condition Setup Time (for
repeated Start Condition)
1250 — — nsec
t
SC
SCL Clock Period 2.5 — — sec
t
H(START)
Start Condition Hold Time 100 — — nsec
t
DSU
Data in Setup Time to SCL High 100 — — nsec
t
DH
Data in Hold Time after SCL Low 0 — — nsec
t
SU(STOP)
Stop Condition Setup Time 100 — — nsec
t
IDLE
Bus Free Time Prior to New Transition 1250 — — nsec
Note 1: Output current should be minimized for best temperature accuracy. Power dissipation within the TCN75 will cause self-heating and
temperature drift. At maximum rated output current and saturation voltage, 4 mA and 0.8V, respectively, the error amounts to 0.544°C for
the SOIC.
2: All part types of the TCN75 will operate properly over the wider power supply range of 2.7V to 5.5V. Each part type is tested and specified
for rated accuracy at its nominal supply voltage. As V
DD
varies from the nominal value, accuracy will degrade 1°C/V of V
DD
change.
3: Human body model, 100 pF discharged through a 1.5k resistor.
SCL
t
SC
t
DSU
t
SU (Stop)
t
H (Start)
t
DH
SDA
Data In
SDA
Data Out