 2002 Microchip Technology Inc.

DS21462C-page 5

TC74

2.0

PIN DESCRIPTIONS

The descriptions of the pins are listed in Table 2-1.

TABLE 2-1:

PIN FUNCTION TABLE

2.1

Ground (GND)

Input. Ground return for all TC74 functions.

2.2

Power supply input. See Electrical Specifications.

2.3

of the TC74. See System Management Bus

Specification, Rev. 1.0, for timing diagrams.

2.4

Serial Data (SDA)

Bidirectional. Serial data is transferred on the SMBus/

Management Bus Specification, Rev. 1.0 for timing

diagrams.

Pin No.

(5-Pin

SOT-23)

Pin No.

(5-Pin TO-220)

Symbol

Type

Description

1

1

NC

None

No Internal Connection

2

3

GND

Power

System Ground

35

Power

Power Supply Input

4

4

SCLK

Input

5

2

SDA

Bidirectional