TCN75 Datasheet, PDF (4/20 Pages) TelCom Semiconductor, Inc – 2-WIRE SERIAL TEMPERATURE SENSOR AND THERMAL MONITOR

TCN75
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
t_LOW
t_HIGH
t_R
t_F
t_SU(START)
Serial Port Frequency
Low Clock Period
High Clock Period
SCL and SDA Rise Time
SCL and SDA Fall Time
Start Condition Setup Time (for
repeated Start Condition)
0
100
400
kHz
1250
—
—
nsec
1250
—
—
nsec
—
—
250
nsec
—
—
250
nsec
1250
—
—
nsec
t_SC
SCL Clock Period
2.5
—
—
μsec
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.
TIMING DIAGRAM
tSC
SCL
SDA
Data In
SDA
Data Out
t_{H (Start)}
tDSU
t_DH
t_{SU (Stop)}
DS21490C-page 4
© 2006 Microchip Technology Inc.