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| Product attributes | Property Value |
| Manufacturer | Nexperia USA Inc. |
| Product Series | 74LVT |
| Packaging | | |
| Part Status | Active |
| Logic Type | Transceiver, Inverting |
| Number of Elements | 1 |
| Number of Bits per Element | 8 |
| Input Type | - |
| Output Type | 3-State |
| Current - Output High, Low | 32mA, 64mA |
| Voltage - Supply | 2.7V ~ 3.6V |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Grade | - |
| Qualification | - |
| Mounting Type | Surface Mount |
| Package / Case | 20-TSSOP (0.173", 4.40mm Width) |
| Supplier Device Package | 20-TSSOP |
The 74LVT640PW from Nexperia is an 8-bit inverting transceiver belonging to the 74LVT logic family. It features 3-State outputs and operates from 2.7V to 3.6V, delivering 32mA source and 64mA sink current. The 20-pin TSSOP package is ideal for space-constrained designs. This device is well-suited for bus interfacing, signal inversion, and buffering in 3.3V systems.
- Inverting Function: Eliminates the need for separate inverter ICs, saving board space and cost.
- High Sink Current (64mA): Drives heavy capacitive loads and long traces with ease.
- 3-State Outputs: Allows multiple devices to share the same bus without contention.
- Industry-Standard TSSOP Package: Easy to route and solder in standard manufacturing processes.
Inverting Bus Transceiver for Control Lines
Use the 74LVT640PW to invert and buffer control signals (e.g., read/write lines) between a processor and peripheral, simplifying logic design where active-low signals are needed.
Data Bus Inversion for Signal Integrity
In high-speed systems, inverting the data bus can reduce simultaneous switching noise (SSN). This transceiver provides that function while maintaining 3-State capability.
Level Shifting Between 3.3V and 2.7V Logic
With a 2.7V minimum supply, it can interface 3.3V controllers with lower-voltage ASICs, providing both level shifting and signal inversion.
Buffering for Long PCB Traces
The 64mA sink current allows driving long, high-capacitance traces on a motherboard, improving signal rise/fall times and reducing crosstalk.
Industrial Sensor Interface
In industrial controls, invert and buffer signals from sensors or encoders to match the logic polarity required by the PLC input module.
Memory Address Inversion
In some memory architectures, inverting the address bus can help with decoding. This IC provides a clean, buffered solution.
- Q: What is the logic family of the 74LVT640PW?
- A: It is from the 74LVT family, a low-voltage, high-speed BiCMOS logic series.
- Q: What is the function of this device?
- A: It is an 8-bit inverting transceiver with 3-State outputs, allowing bidirectional data flow with inverted logic.
- Q: How many channels does it have?
- A: It has 1 channel of 8 bits.
- Q: What is the output type?
- A: The outputs are 3-State, enabling connection to a shared bus.
- Q: What is the voltage range?
- A: It operates from 2.7V to 3.6V, suitable for 3.3V systems.
- Q: What package is it available in?
- A: It comes in a 20-pin TSSOP package (4.40mm width).
74LVT640PW,118.pdf
- Q: What is the logic family of the 74LVT640PW?
- A: It is from the 74LVT family, a low-voltage, high-speed BiCMOS logic series.
- Q: What is the function of this device?
- A: It is an 8-bit inverting transceiver with 3-State outputs, allowing bidirectional data flow with inverted logic.
- Q: How many channels does it have?
- A: It has 1 channel of 8 bits.
- Q: What is the output type?
- A: The outputs are 3-State, enabling connection to a shared bus.
- Q: What is the voltage range?
- A: It operates from 2.7V to 3.6V, suitable for 3.3V systems.
- Q: What package is it available in?
- A: It comes in a 20-pin TSSOP package (4.40mm width).