SCLS969 January 2024 SN54SC6T06-SEP
PRODUCTION DATA
Refer to the PDF data sheet for device specific package drawings
The SN54SC6T06-SEP can be used to drive LEDs with control from very low voltage sources. The supply voltage of the SN54SC6T06-SEP can be set as low as 1.8V (±0.15V), which allows for controlling an LED powered by up to 5V with an input voltage as low as 1.2V. As an example, with a 1.8V SN54SC6T06-SEP supply voltage, the output of the SN54SC6T06-SEP is expected to have an equivalent low-state resistance of 30 Ω (ROL = VOL / IOL = 0.15V / 5mA, from the Typical Characteristics). Therefore the calculation of the current limiting resistor is:
with VPU shown in Equation 1 as the diode pull-up voltage (separate from the device supply voltage, VCC), VF as the diode forward voltage, and ID as the desired diode current.