1 Features

1• Qualified for Automotive Applications

• Wide VCC Range from 3 V to 5.5 V

• Output Maximum Rating of 40 V

• Twelve Power DMOS Transistor Outputs of

50-mA Continuous Current With VCC = 5 V

• Thermal Shutdown Protection

• Enhanced Cascading for Multiple Stages

• All Registers Cleared With Single Input

• Low Power Consumption

• Slow Switching Time (tr and tf), Which Helps

Significantly With Reducing EMI

• 20-Pin TSSOP-PW Package

• 20-Pin DW Package

2 Applications

• Instrumentation Clusters

• Tell-Tale Lamps

• LED Illumination and Controls

3 Description

The TLC6C5912-Q1 is a monolithic, medium-voltage,

low-current power 12-bit shift register designed for

use in systems that require relatively moderate load

power, such as LEDs.

This device contains a 12-bit serial-in, parallel-out

shift register that feeds a 12-bit D-type storage

register. Data transfers through both the shift and

storage registers on the rising edge of the shiftregister

clock (SRCK) and the register clock (RCK),

respectively. The storage register transfers data to

the output buffer when shift register clear (CLR) is

high. A low on CLR clears all registers in the device.

Holding the output enable (G) high holds all data in

the output buffers low, and all drain outputs are off.

Holding G low makes data from the storage register

transparent to the output buffers.

When data in the output buffers is low, the DMOS

transistor outputs are off. When data is high, the

DMOS transistor outputs have sink-current capability.

The serial output (SER OUT) clocks out of the device

on the falling edge of SRCK to provide additional hold

time for cascaded applications. This provides

improved performance for applications where clock

signals may be skewed, devices are not located near

one another, or the system must tolerate

electromagnetic interference. The device contains a

built-in thermal shutdown protection.

Outputs are low-side, open-drain DMOS transistors

with output ratings of 40 V and 50-mA continuous

sink-current capabilities when VCC = 5 V. The current

limit decreases as the junction temperature increases

for additional device protection. The device also

provides up to 2000 V of ESD protection when tested

using the human-body model and 200 V when tested

using the machine model.

The TLC6C5912-Q1 characterization is for operation

over the operating ambient temperature range of

−40°C to 125°C.