Overview
The SN74LVCC3245APWRE4, produced by Texas Instruments, is an 8-bit (octal) noninverting bus transceiver designed for bidirectional voltage translation and asynchronous communication between data buses. This device features two separate supply rails, allowing it to operate with voltages ranging from 2.3 V to 3.6 V on the A port and from 3 V to 5.5 V on the B port. This capability enables seamless translation between different voltage system environments, such as from 3.3 V to 5 V and vice versa, or from 2.5 V to 3.3 V and vice versa.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Voltage (A Port) | 2.3 V to 3.6 V | V |
| Operating Voltage (B Port) | 3 V to 5.5 V | V |
| Operating Temperature Range | -40°C to 85°C | °C |
| Package Type | TSSOP (PW) | - |
| Number of Pins | 24 | - |
| Continuous Output Current | ±50 mA | mA |
| Continuous Current through VCCA, VCCB, or GND | ±100 mA | mA |
| Junction-to-Ambient Thermal Resistance (θJA) | 100.6 °C/W | °C/W |
| ESD Protection | 2000-V Human Body Model, 200-V Machine Model, 1000-V Charged-Device Model | - |
Key Features
- Bidirectional voltage translator
- Control inputs VIH and VIL levels are referenced to VCCA voltage
- Latch-up performance exceeds 250 mA per JESD 17
- ESD protection exceeds JESD 22 standards (2000-V Human Body Model, 200-V Machine Model, 1000-V Charged-Device Model)
- 3-state outputs for bus isolation
- Direction-control (DIR) input for data direction control
- Output-enable (OE) input for disabling the device and isolating the buses
Applications
- Level translation between different voltage system environments (e.g., 3.3 V to 5 V, 2.5 V to 3.3 V)
- USB and other interface applications requiring voltage translation
- Interfacing between analog and digital systems
- Asynchronous communication between data buses in mixed-voltage systems
Q & A
- What is the primary function of the SN74LVCC3245APWRE4?
The primary function is to act as a bidirectional voltage translator and noninverting bus transceiver for asynchronous communication between data buses.
- What are the operating voltage ranges for the A and B ports?
The A port operates from 2.3 V to 3.6 V, and the B port operates from 3 V to 5.5 V.
- What is the package type and number of pins for the SN74LVCC3245APWRE4?
The package type is TSSOP (PW) with 24 pins.
- What is the operating temperature range for this device?
The operating temperature range is -40°C to 85°C.
- How does the direction-control (DIR) input function?
The DIR input controls the direction of data transmission between the A and B buses.
- What is the purpose of the output-enable (OE) input?
The OE input can be used to disable the device, effectively isolating the buses.
- What are the ESD protection levels for this device?
The device has ESD protection exceeding 2000-V Human Body Model, 200-V Machine Model, and 1000-V Charged-Device Model.
- What is the continuous output current rating for this device?
The continuous output current rating is ±50 mA.
- What are some common applications for the SN74LVCC3245APWRE4?
Common applications include level translation, USB interfaces, and interfacing between analog and digital systems.
- How does the device handle latch-up performance?
The device's latch-up performance exceeds 250 mA per JESD 17 standards.
