Datasheet

 2001-2012 Microchip Technology Inc. DS21462D-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 (V
DD
)
Power supply input. See Electrical Specifications.
2.3 SMBus/I
2
C Serial Clock (SCLK)
Input. SMBus/I
2
C serial clock. Clocks data into and out
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/
I
2
C in both directions using this pin. See System
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
35V
DD
Power Power Supply Input
4 4 SCLK Input SMBus/I
2
C Serial Clock
5 2 SDA Bidirectional SMBus/I
2
C Serial Data