SN10KHT5578NTG4

Logic - Translators, Level Shifters

SN10KHT5578NTG4 is a monolithic integrated device designed to convert signal levels between the TTL logic family and FET logic family. This device is a 6-bit level translator with latched inputs and is ideal for converting digital signal levels between 0.8V and 7.0V. It is designed with high speed logic devices that are compatible with both TTL and FET logic families.

Application field

The SN10KHT5578NTG4 is suitable for multiple routing and timing applications, such as automotive and industrial, that require signal conversion from the TTL logic family to the FET logic family. It features 6-bit level translation with latched inputs, making it a robust solution for applications that require increased noise immunity.

Working principle

The SN10KHT5578NTG4 operates with two separate regulated power supply rails (one for TTL, one for FET), hence it requires separate power supplies for each of the two logic families it supports. This device also features a latch structure which allows it to capture the TTL data and output the latched FET data. It has power-on reset circuit and two TTL sets of enable pin that are used to control the level-shifted output.

Internally, the SN10KHT5578NTG4 uses a combination of logic elements including a few sets of NAND gates, a few sets of inverters, and a high-speed level shifter. The output stage of the NAND gates is connected to the Drain of an NFET and the Source of the NFET is connected to the level shifter. The input is applied to the gates connected to the Gate of the NFET and the output is taken from the level shifter.

The device has two function pins, E1 and E2, which can be used to control the output of the device. When E2 and E1 are both in logic high, the output of the device is latched into its active state, meaning the latched output is the same as the TTL data, at 0.8V. When either of the E1 or E2 pins is held in logic low, the output of the device is in its in-active state, meaning the output is at 7.0V.

The SN10KHT5578NTG4 has a wide range of input and output voltage levels and is suitable for applications that require high noise immunity and higher speed. It is also very cost effective and easy to use and is a good choice for reducing the cost of the digital signal level translation circuit.