Overview
The SN74AXC4T245 is a four-bit noninverting bus transceiver designed by Texas Instruments. This device is part of the AVC family and is notable for its fully configurable dual-rail design, allowing each port to operate with a power supply range from 0.65V to 3.6V. It is designed for asynchronous communication between data buses and supports glitch-free power supply sequencing, making it robust for various applications. The device features multiple direction control pins and output-enable inputs to manage data flow and output states effectively.
Key Specifications
| Parameter | Min | Max | Unit |
|---|---|---|---|
| VCCA Supply Voltage | 0.65 | 3.6 | V |
| VCCB Supply Voltage | 0.65 | 3.6 | V |
| Operating Temperature | –40°C | +125°C | °C |
| Propagation Delay (A to B) | 23 | 128 | ns |
| Propagation Delay (B to A) | 10 | 108 | ns |
| ESD Protection (Human-Body Model) | ±8000 | V | |
| ESD Protection (Charged-Device Model) | ±1000 | V | |
| Continuous Output Current | –50 | 50 | mA |
| Junction-to-Ambient Thermal Resistance (PW Package) | 126.9 | °C/W |
Key Features
- Fully configurable dual-rail design allowing each port to operate with a power supply range from 0.65V to 3.6V.
- Glitch-free power supply sequencing, enabling either supply rail to be powered on or off in any order.
- VCC isolation feature: if either VCC input is below 100mV, all I/O outputs are disabled and become high-impedance.
- Support for partial-power-down mode operation with Ioff current protection.
- ESD protection exceeding JESD 22 standards: 8000V Human-Body Model and 1000V Charged-Device Model.
- Multiple direction control pins and output-enable inputs for flexible data flow management.
- Compatible with single-supply systems and supports up to 380Mbps data translation from 1.8V to 3.3V.
Applications
- Enterprise and communications systems.
- Industrial automation and control systems.
- Personal electronics and consumer devices.
- Wireless infrastructure and networking equipment.
- Building automation and control systems.
- Point of sale and retail systems.
Q & A
- What is the operating voltage range for the SN74AXC4T245?
The SN74AXC4T245 operates with a power supply range from 0.65V to 3.6V for both VCCA and VCCB.
- What is the propagation delay for data translation from A to B ports?
The propagation delay from A to B ports ranges from 23ns to 128ns depending on the operating conditions.
- Does the SN74AXC4T245 support partial-power-down mode?
- What is the ESD protection level for the SN74AXC4T245?
The device has ESD protection exceeding JESD 22 standards: 8000V Human-Body Model and 1000V Charged-Device Model.
- Can the SN74AXC4T245 be used in single-supply systems?
- What are the typical applications of the SN74AXC4T245?
The device is used in enterprise and communications systems, industrial automation, personal electronics, wireless infrastructure, building automation, and point of sale systems.
- How does the VCC isolation feature work?
If either VCC input is below 100mV, all I/O outputs are disabled and become high-impedance.
- What is the maximum data translation speed supported by the SN74AXC4T245?
The device supports up to 380Mbps data translation from 1.8V to 3.3V.
- What are the package options available for the SN74AXC4T245?
The device is available in PW (TSSOP, 16-pin), BQB (WQFN, 16-pin), and RSV (UQFN, 16-pin) packages.
- What is the operating temperature range for the SN74AXC4T245?
The device operates over a temperature range from –40°C to +125°C.
