EMC2303-1-KP-TR Standard Microsystems (SMSC), EMC2303-1-KP-TR Datasheet - Page 8

• Manufacturer Part Number: EMC2303-1-KP-TR
• Manufacturer: Standard Microsystems (SMSC)

Specifications of EMC2303-1-KP-TR

• Operating Supply Voltage (typ): 3.3V
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 3.6V
• Operating Temp Range: -40C to 125C
• Operating Temperature Classification: Automotive
• Mounting: Surface Mount
• Pin Count: 12
• Lead Free Status / RoHS Status: Compliant

APPLICATION NOTE: For the 5V tolerant pins that have a pull-up resistor, the voltage difference between VDD and
Revision 1.2 (03-22-10)
PIN NUMBER
Bottom Pad
10
11
12
6
7
8
9
The pin types are described in detail below. All pins labeled with (5V) are 5V tolerant.
PIN TYPE
the 5V tolerant pad must never be more than 3.6V.
Power
DIOD
AIO
DO
OD
DI
PIN NAME
Table 1.1 Pin Description for EMC2303 (continued)
ALERT#
TACH1
TACH2
TACH3
PWM2
PWM3
GND
CLK
Table 1.2 Pin Types
DATASHEET
Open Drain PWM output driver for Fan 2
Open Drain PWM output driver for Fan 3
Clock input for tachometer measurement
Open drain tachometer input for Fan 2 -
Open drain tachometer input for Fan 3 -
Open drain tachometer input for Fan 1-
Push-Pull PWM output driver for Fan 2
Push-Pull PWM output driver for Fan 3
Active low interrupt - requires external
controllers to cynchronize Fan Speed
Push Pull Clock output to other fan
This pin is used to supply power or ground to the device.
Analog input / output - this pin is used for analog signals
Digital Input - this pin is used as a digital input. This pin is
5V tolerant.
Push / Pull Digital Output - this pin is used as a digital
output. It can both source and sink current.
Digital Input / Open Drain Output this pin is used as a
digital I/O. When it is used as an output, it is open drain
and requires a pull-up resistor. This pin is 5V tolerant.
Open Drain Digital Output - this pin is used as a digital
output. It is open drain and requires a pull-up resistor. This
pin is 5V tolerant.
8
requires pull-up resistor
requires pull-up resistor
requires pull-up resistor
PIN FUNCTION
pull-up resistor.
Multiple RPM-Based PWM Fan Controller for Three Fans
Ground
Control
DESCRIPTION
PIN TYPE
OD (5V)
OD (5V)
OD (5V)
SMSC EMC2303
DI (5V)
DI (5V)
DI (5V)
DI (5V)
Power
DO
DO
DO
Datasheet