Product Overview
Texas Instruments TLC5940NT 16-Channel PWM LED Driver IC DIP-28
Condition
Unused new old stock (NOS). Physical inspection confirms intact, straight dual in-line pins and clean package surfaces. Markings legible: Texas Instruments logo and TLC5940NT. Sold each.
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Product Overview
Constant-current sink control combines with 12-bit PWM brightness management in a through-hole 28-pin plastic DIP package. Engineered for visual displays, sign modules, and instrumentation backlighting, this component delivers 4096-step individual grayscale control alongside 6-bit dot correction to calibrate output variance across outputs. A 30 MHz serial communication interface enables cascaded configurations across multiple units without exhausting microcontroller timers or I/O pins.
Key Features
- 16 constant-current sink output channels
- 12-bit (4096-step) grayscale PWM brightness control per channel
- 6-bit dot correction storable in on-chip EEPROM
- Drive capability from 0 mA up to 120 mA per channel (VCC > 3.6 V)
- Maximum LED output voltage up to 17 V
- Supply voltage range (VCC) from 3.0 V to 5.5 V
- Serial data interface supporting clock frequencies up to 30 MHz
- 28-pin plastic dual in-line package (PDIP / DIP-28)
Applications
- Plugs directly into standard breadboards and IC sockets for prototyping custom microcontroller lighting rigs.
- Drives discrete multi-segment displays, LED matrix panels, and backlighting arrays requiring uniform intensity.
- Operates output expansion boards and toy/solenoid drivers in virtual pinball machines and DIY arcade builds.
- Controls multi-channel RGB lighting setups without consuming extra PWM timer pins on the host processor.
Frequently Asked Questions
What supply voltage does the logic side require?
The logic supply (VCC) accepts input voltages from 3.0 V to 5.5 V, allowing direct compatibility with 3.3 V and 5 V microcontroller platforms.
Can multiple TLC5940NT chips be chained together?
Yes. The serial data input and output lines are designed to daisy-chain across multiple ICs, allowing dozens of PWM channels to be driven from a shared SPI bus.
What package format is this IC?
This is the through-hole NT variant housed in a standard 0.600-inch wide 28-pin plastic dual in-line package (DIP-28).
Nothing tames an unruly swarm of discrete LEDs quite like dedicated hardware PWM. Drop it into your socket and take command of sixteen channels without tying up your MCU.
