Overview
The SN74AVC8T245PWE4 is an 8-bit dual-supply bus transceiver produced by Texas Instruments. This device is designed for asynchronous communication between data buses and features configurable voltage-level shifting and 3-state outputs. It operates with two separate configurable power-supply rails, allowing each port to function over a wide voltage range from 1.2 V to 3.6 V. This makes it ideal for universal low-voltage bidirectional translation between various voltage nodes such as 1.2 V, 1.5 V, 1.8 V, 2.5 V, and 3.3 V.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 24-TSSOP (0.173", 4.40mm Width) |
| Number of Pins | 24 |
| Operating Temperature Range (°C) | -40 to 125 |
| Supply Voltage (VCCA/VCCB) | 1.2 V to 3.6 V |
| Data Rate | Up to 320 Mbps (VCCA ≥ 1.8 V and VCCB ≥ 1.8 V) |
| Output Type | Tri-State, Non-Inverted |
| ESD Protection | 8000-V Human-Body Model, 200-V Machine Model, 1000-V Charged-Device Model |
| Mounting Type | Surface Mount |
Key Features
- Latch-up performance exceeds 100 mA per JESD 78, Class II
- ESD protection exceeds JESD 22 standards
- VCC isolation feature – all I/O ports in high-impedance state if either VCC input is at GND
- Ioff supports partial power-down mode operation
- Fully configurable dual-rail design
- I/Os are 4.6-V tolerant
- Control inputs VIH/VIL levels are referenced to VCCA voltage
Applications
The SN74AVC8T245PWE4 is suitable for a variety of applications requiring voltage translation and level shifting, such as in mixed-voltage systems, data communication interfaces, and general-purpose logic circuits. It is particularly useful in scenarios where asynchronous communication between different voltage domains is necessary.
Q & A
- What is the primary function of the SN74AVC8T245PWE4?
The primary function is to act as an 8-bit dual-supply bus transceiver with configurable voltage-level shifting and 3-state outputs. - What is the operating voltage range for VCCA and VCCB?
The operating voltage range for both VCCA and VCCB is from 1.2 V to 3.6 V. - What is the maximum data rate supported by the device?
The device supports up to 320 Mbps when both VCCA and VCCB are 1.8 V or higher. - What type of ESD protection does the device offer?
The device offers ESD protection exceeding 8000-V Human-Body Model, 200-V Machine Model, and 1000-V Charged-Device Model. - How does the VCC isolation feature work?
If either VCC input is at GND, all I/O ports are in the high-impedance state. - Is the device RoHS compliant?
Yes, the device is RoHS compliant. - What is the package type and pin count of the SN74AVC8T245PWE4?
The device comes in a 24-pin TSSOP package. - What is the operating temperature range of the device?
The operating temperature range is from -40°C to 125°C. - Can the device be used in partial power-down mode?
Yes, the device supports partial power-down mode operation using Ioff circuitry. - How are the control inputs referenced?
The control inputs VIH/VIL levels are referenced to VCCA voltage.
