Single Power Supply Buffer CMOS Logic Level Shifter, SC-70-5

The SN74LV1T34DCKR from Texas Instruments is a versatile single power supply, low-voltage CMOS gate buffer and logic level shifter. It is engineered to operate across a wide voltage range, making it suitable for a broad spectrum of modern electronic applications. This device expertly translates logic levels, with an output that references the supply voltage to support 1.8V, 2.5V, 3.3V, and 5V CMOS standards.

Its input features a specialised lower threshold circuit, enabling seamless 1.8V to 3.3V level-up translation when VCC is at 3.3V. Furthermore, the 5V tolerant input pins provide robust down-translation capabilities. With a wide VCC operating range from 1.8V to 5.5V, this shifter can generate the precise output levels required to interface various microcontrollers, processors, and other digital components.

Key Performance Features

The device is designed with a controlled current-drive capability of 8mA. This specification is crucial for minimising signal integrity issues such as line reflections, overshoot, and undershoot, which are often caused by outputs with excessively high drive strength. This results in cleaner, more reliable data transmission across your circuits.

Reliability and Compliance

Built to high industry standards, it supports standard logic pinouts and boasts a latch-up performance exceeding 100mA per JESD 78, Class II. Characterised for operation at up to 50MHz with a 3.3V VCC, it meets the demands of high-speed signalling. As a green product, it is manufactured without antimony (Sb) or bromine (Br), aligning with environmental regulations.

Compact Packaging

Housed in a space-saving SC-70-5 package, this level shifter is ideal for portable and space-constrained designs where board real estate is at a premium.