SCLT018 September 2024 SN74LV4T08
Systems that require logic gates can have mismatched logic voltage levels resulting in the need for a voltage translating gate to enable communication between devices. For example, a singular LVxT device can be used instead of both a translator and gate, resulting in a decrease of board space and easier integration.
Figure 1 Voltage Translation Using an AND
GateLeft: block diagram for up translation Right: block diagram for down translation
Design Considerations
- Voltage translation is capable of performing both up and down translation with a single supply
- Ability to reduce the number of parts for qualification and assembly
- Board design is streamlined by obtaining the functionality of two devices in one
- Wide voltage range support systems with varied levels of logic coexisting including 1.8V, 2.5V, 3.3V and 5.0V
- For traces longer than 12cm (4760 mil), see Drive Transmission Lines With Logic
- [FAQ] How does a slow or floating input affect a CMOS device?
- [FAQ] Where do I find maximum power dissipation for a device?
- Ask a question on TI's E2E™ forums
Recommended Parts
| Part Number | AEC-Q100 | VCC Range | Channels | Features |
|---|---|---|---|---|
| SN74AUP1T02 | 2.3V to 3.6V | 1 | Single 2-input Schmitt-trigger NOR gate | |
| SN74AUP1T08 | 2.3V to 3.6V | 1 | Single 2-input Schmitt-trigger AND gate | |
| SN74AUP1T32 | 2.3V to 3.6V | 1 | Single 2-input Schmitt-trigger OR gate | |
| SN74LV1T08 | 1.65V to 5.5V | 1 | Single 2-input AND gate | |
| SN74LV1T08-Q1 | ✔ | |||
| SN74LV1T32 | 1.65V to 5.5V | 1 | Single 2-input OR gate | |
| SN74LV1T32-Q1 | ✔ | |||
| SN74LV4T08 | 1.65V to 5.5V | 4 | Quad 2-input AND gates | |
| SN74LV4T08-Q1 | ✔ | |||
| SN74LV4T00 | 1.65V to 5.5V | 4 | Quad 2-input NAND gates | |
| SN74LV4T00-Q1 | ✔ |
For more devices, browse through the online parametric tool where you can sort by desired voltage, channel numbers, and other features.