TC74A5 Microchip Technology, TC74A5 Datasheet - Page 3

• Manufacturer Part Number: TC74A5
• Description: Tiny Serial Digital Thermal Sensor
• Manufacturer: Microchip Technology

1.0
Absolute Maximum Ratings*
Supply Voltage (V
Voltage On Any Pin ....... (GND – 0.3V) to (V
Current On Any Pin .......................................... ±50 mA
Operating Temperature (T
Storage Temperature (T
TC74 ELECTRICAL SPECIFICATIONS
©
Electrical Characteristics: V
Power Supply
V
I
I
Temperature to Bits Converter
T
CR
Serial Port Interface
V
V
V
C
I
Note
DD
DD-STANDBY
LEAK
ERR
POR
IH
IL
OL
2002 Microchip Technology Inc.
IN
Symbol
1:
2:
3:
4:
5:
ELECTRICAL
CHARACTERISTICS
Maximum ensured conversion time after Power-on Reset (POR to DATA_RDY) is 250 msec.
Output current should be minimized for best temperature accuracy. Power dissipation within the TC74 will cause self-heating and
SDA and SCLK must be connected to V
V
Operating current is an average value integrated over multiple conversion cycles. Transient current may exceed this specification.
temperature drift error.
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
the nominal value, accuracy will degrade 1°C/V of V
DD
= 3.3V for TC74X -3.3VCT. V
Power-on Reset Threshold
Operating Current
Standby Supply Current
Temperature Accuracy TC74A
Conversion Rate
Logic Input High
Logic Input Low
SDA Output Low
Input Capacitance SDA, SCL
I/O Leakage
DD
) ............................................ +6V
STG
A
)........................ See Below
Parameter
DD
) .............. -65°C to +150°C
= 3.3V or 5.0V (Note 5), -40°C ≤ T
DD
= 5.0V for TC74X -5.0VCT. All part types of the TC74 will operate properly over the wider power
DD
DD
or GND.
+ 0.3V)
0.8 x V
Min
1.2
—
—
-2
-3
—
—
—
—
—
-1
4
DD
DD
change.
Typ.
200
0.1
—
—
—
—
—
—
5
8
5
A
≤ 125°C, unless otherwise noted.
*Stresses above those listed under "Absolute Maximum Rat-
ings" may cause permanent damage to the device. These are
stress ratings only and functional operation of the device at
these or any other conditions above those indicated in the
operation sections of the specifications is not implied. Expo-
sure to Absolute Maximum Rating conditions for extended
periods may affect device reliability.
0.2 x V
Max
350
2.2
0.4
0.6
10
+2
+2
—
—
—
—
1
DD
Unit
Sps
µA
°C
pF
µA
µA
V
V
V
V
V
V
V
Serial Port Inactive (Note 1)
V
Serial Port Inactive (Note 1)
+25°C <T
-40°C < T
(Note 2)
I
I
0°C < T
OL
OL
DD
DD
DD
= 3 mA
= 6 mA (Note 3)
Falling Edge or Rising Edge
= 5.5V
= 3.3V
A
Test Conditions
A
A
< +125°C
< +85°C
< 0°C
DS21462B-page 3
TC74
DD
varies from