LS 336K-J2L1-1

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LED Indication - Discrete is the application field for LS 336K-J2L1-1. This unit is an integrated octal transparent latch and LED indicators based on logic control. It provides a low cost, space-saving solution for applications such as PC board indicators, automotive instrument cluster displays, relay status indicators and many other systems, where both visual and logic feedback are needed.

The LS 336K-J2L1-1 consists of an octal latch with separate clear and preset inputs and one output bit for each latch. An open-drain output is available for each latch bit and can be used to control external indicators. Additionally, the LEDs are controlled by a direct logic control input, and a high-efficiency LED driver is included for each LED.

The device has two types of input/output data flow: serial and parallel. In serial mode, data is shifted from the serial data input pin(s) to the latch output bit(s). The input signals, including the clock and the parallel data outputs are buffered. In parallel mode, the outputs can be directly accessed via buffer-register. The parallel mode facilitates initializing the register with data, and data in the output can be modified by changing the values at the data inputs prior to enabling the clock.

The LS 336K-J2L1-1 is powered by a single 5V power supply. Outputs are provided in active low format, allowing easier direct connection of the LEDs to power. The LEDs can be configured to be permanently off, permanently on, or open to allow connection to be made to the microcontrollers.

The working principle of LS 336K-J2L1-1 is based on a logic control system. The device contains an 8-bit input/output port, capable of supplying logic control for both LED indicators and the octal latch. A high voltage input signal is used to control the LEDs, while the logic control signal is used to control the latch. The input/output port is connected to the octal latch and LED drivers via a buffer register which allows the LED and latch to be driven independently.

When the logic control signal is high, the LEDs are on, and the latch is enabled. If the logic control signal is low, the LEDs are off, and the latch is disabled. Data is then transferred from the input port to the latch on the rising edge of the clock signal. Depending on the configuration, the data can be transferred from the latch to the LED either in parallel or serial fashion.

In this way, the LS 336K-J2L1-1 provides a low-cost, space-saving solution to LED indication and logic control for a wide range of applications. It can be used in systems such as PC board indicators, automotive instrument cluster displays, relay status indicators and many other systems, where both visual and logic feedback are needed.

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