LM74
Pin Descriptions
Label
SO-8
Pin
#
1
2
3
4
5
6
7
8
3
2
4
micro
SMD
Pin
#
1
5
Function
Typical Connection
SI/O
SC
NC
GND
NC
NC
CS
V
+
Slave Input/Output - Serial bus bi-directional data
line. Schmitt trigger input.
From and to Controller
Slave Clock - Serial bus clock Schmitt trigger input From Controller
line.
No Connection
Power Supply Ground
No Connection
No Connection
Chip Select input.
Positive Supply Voltage Input
No Connection
Ground
No Connection
No Connection
From Controller
DC Voltage from 3.0V to 5.5V for the
LM74CIM and 2.65V to 5.5V for the
LM74CIBP. Bypass with a 0.1 µF ceramic
capacitor.
Typical Application
10090903
FIGURE 1. COP Microcontroller Interface
3
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