Overview
The 74AVC1T45GW is a single-bit, dual-supply voltage level translator/transceiver produced by Nexperia. This device is designed to enable bidirectional level translation between different voltage domains, making it suitable for a wide range of applications where voltage compatibility is a concern.
The transceiver features two 1-bit input-output ports (A and B), a direction control input (DIR), and dual supply pins (VCC(A) and VCC(B)). Both supply voltages can range from 0.8 V to 3.6 V, allowing for universal low-voltage translation between various voltage nodes.
Key Specifications
| Parameter | Description | Value |
|---|---|---|
| VCC(A) and VCC(B) | Supply Voltage Range | 0.8 V to 3.6 V |
| Logic Switching Levels | CMOS/LVTTL | - |
| Output Drive Capability | ±12 mA | - |
| tpd | Propagation Delay | 2.1 ns |
| Number of Bits | 1 | - |
| Power Dissipation | Very low | - |
| Tamb | Operating Ambient Temperature | -40°C to +125°C |
| Rth(j-a) | Thermal Resistance Junction-to-Ambient | 262 K/W |
| Package | TSSOP6 (SOT363-2) | - |
Key Features
- Bidirectional Level Translation: Enables transmission of a single logic bit across different voltage domains.
- Dual Supply Pins: VCC(A) and VCC(B) can be supplied at any voltage between 0.8 V and 3.6 V.
- Direction Control: The DIR pin controls the direction of the transceiver.
- Tri-State Output: The device features tri-state outputs, allowing for high-impedance state when either power supply is at GND level.
- Low Power Dissipation: CMOS technology ensures very low power consumption.
- High Noise Immunity: Designed to operate reliably in noisy environments.
- Multiple Package Options: Available in TSSOP6 (SOT363-2) and other packages.
Applications
The 74AVC1T45GW is suitable for various applications where voltage level translation is necessary, such as:
- Interface between different voltage domains in mixed-signal designs.
- Level shifting in communication protocols.
- Power management systems requiring voltage translation.
- Embedded systems and IoT devices with multiple voltage levels.
Q & A
- What is the primary function of the 74AVC1T45GW?
The primary function is to enable bidirectional level translation between different voltage domains.
- What is the range of supply voltages for VCC(A) and VCC(B)?
The supply voltages can range from 0.8 V to 3.6 V.
- How is the direction of the transceiver controlled?
The direction is controlled by the DIR pin, where a HIGH on DIR allows transmission from A to B and a LOW allows transmission from B to A.
- What is the significance of the tri-state output feature?
The tri-state output feature allows the device to enter a high-impedance state when either power supply is at GND level, preventing damaging backflow currents.
- What are the operating temperature ranges for the 74AVC1T45GW?
The device operates from -40°C to +125°C.
- What package types are available for the 74AVC1T45GW?
The device is available in TSSOP6 (SOT363-2) and other package options.
- What is the propagation delay of the 74AVC1T45GW?
The propagation delay is approximately 2.1 ns.
- How does the device handle power-down situations?
The device features IOFF circuitry, which disables the output and prevents backflow current when powered down.
- What are some common applications for the 74AVC1T45GW?
Common applications include interface between different voltage domains, level shifting in communication protocols, and power management systems.
- Is the 74AVC1T45GW suitable for high-noise environments?
Yes, the device is designed with high noise immunity.
