TC74

DS21462D-page 2

 2001-2012 Microchip Technology Inc.

1.0

ELECTRICAL

CHARACTERISTICS

1.1

Absolute Maximum Ratings†

Current On Any Pin ..........................................±50 mA

† Notice: Stresses above those listed under "Maximum

Ratings" may cause permanent damage to the device.

This is a stress rating only and functional operation of

the device at those or any other conditions above those

indicated in the operation listings of this specification is

not implied. Exposure to maximum rating conditions for

extended periods may affect device reliability.

DC CHARACTERISTICS

Parameters

Sym

Min

Typ

Max

Units

Conditions

Power Supply

Power-on Reset Threshold

1.2

—

2.2

V

Edge

Supply Voltage

2.7

—

5.5

V

Note 5

Operating Current

—

200

350

µA

Standby Supply Current

—

5.0

10

µA

Serial Port Inactive, Note 4

Temperature-to-Bits Converter

Temperature Accuracy

-2.0

-3.0

—

—

—

±2.0

+2.0

+3.0

—

°C

Conversion Rate

CR

4

8

—

SPS

Note 2

Serial Port Interface

Logic Input High

——

V

Logic Input Low

—

—

V

SDA Output Low

—

—

—

—

0.4

0.6

V

V

Input Capacitance SDA, SCLK

—5.0

—

pF

I/O Leakage

-1.0

0.1

1.0

µA

10

—

100

kHz

Low Clock Period

4.7

—

—

µsec

10% to 10%

High Clock Period

4.0

—

—

µsec

90% to 90%

—

—

—

—

1000

300

nsec

nsec

10% to 90%

90% to10%

Note 1: Operating current is an average value integrated over multiple conversion cycles. Transient current may

exceed this specification.

2: Maximum ensured conversion time after Power-on Reset (POR to DATA_RDY) is 250 msec.

3: Output current should be minimized for best temperature accuracy. Power dissipation within the TC74 will

cause self-heating and temperature drift error.

properly over the wider power supply range of 2.7V to 5.5V. Each part type is tested and specified for rated