Overview
The Texas Instruments SN74AVC4T245PWTE4 is a 4-bit, dual-supply noninverting bidirectional voltage level translation device. This component is designed for asynchronous communication between two data buses, allowing for universal low-voltage bidirectional translation between various voltage nodes such as 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V. The device features two separate configurable power-supply rails, VCCA and VCCB, each accepting any supply voltage from 1.2V to 3.6V. This flexibility makes it suitable for a wide range of applications requiring voltage level translation.
Key Specifications
| Parameter | Description |
|---|---|
| Number of Bits | 4-bit |
| Power Supply Range | VCCA: 1.2V to 3.6V, VCCB: 1.2V to 3.6V |
| Package Types | SOIC (16), TVSOP (16), TSSOP (16), VQFN (16), UQFN (16) |
| Package Size | Varies by package type (e.g., TSSOP: 5.00 mm x 4.40 mm) |
| Data Rate | Up to 380 Mbps (e.g., translating from 1.8V to 3.3V) |
| Control Inputs | DIR (Direction Control), OE (Output Enable) |
| Output Mode | 3-State Outputs (Enabled, High-Impedance) |
| ESD Protection | Yes |
| Latch-Up Prevention | Yes |
| Partial-Power-Down Mode | Supported (Ioff feature) |
| AEC-Q100 Qualification | Yes (for automotive applications, SN74AVC4T245-Q1) |
Key Features
- Fully Configurable Dual-Rail Design: Allows each port to operate over the full 1.2V to 3.6V power-supply range.
- High Speed Translation: Supports data rates up to 380 Mbps.
- Ioff Supports Partial-Power-Down Mode: Prevents backflow current by disabling I/O output circuits when the device is in partial-power-down mode.
- 3-State Outputs: Outputs can be set to high-impedance mode to isolate the buses.
- ESD Protection and Latch-Up Prevention: Ensures robust operation against electrical stress.
- AEC-Q100 Qualified: Suitable for automotive applications (SN74AVC4T245-Q1).
Applications
- Automotive Systems: AEC-Q100 qualified version (SN74AVC4T245-Q1) is suitable for automotive applications.
- Consumer Electronics: Ideal for devices requiring voltage level translation between different voltage domains.
- Industrial Control Systems: Useful in systems that need to communicate between different voltage levels.
- Communication Equipment: Suitable for high-speed data translation in communication devices.
- Embedded Systems: Can be used in various embedded systems requiring bidirectional voltage level translation.
Q & A
- What is the primary function of the SN74AVC4T245?
The primary function is to provide bidirectional voltage level translation between two data buses.
- What is the power supply range for VCCA and VCCB?
Both VCCA and VCCB can accept any supply voltage from 1.2V to 3.6V.
- What is the maximum data rate supported by the SN74AVC4T245?
The device can support data rates up to 380 Mbps.
- How do the DIR and OE inputs control the device?
The DIR input controls the direction of data transmission, and the OE input enables or disables the outputs, placing them in high-impedance mode when set to high.
- Does the SN74AVC4T245 support partial-power-down mode?
Yes, it supports partial-power-down mode through the Ioff feature.
- Is the SN74AVC4T245 suitable for automotive applications?
Yes, the SN74AVC4T245-Q1 is AEC-Q100 qualified for automotive applications.
- What types of packages are available for the SN74AVC4T245?
The device is available in SOIC, TVSOP, TSSOP, VQFN, and UQFN packages.
- Does the SN74AVC4T245 have ESD protection and latch-up prevention features?
Yes, it includes ESD protection and latch-up prevention features.
- How do the 3-state outputs work in the SN74AVC4T245?
The outputs can be set to high-impedance mode to isolate the buses when the OE input is set to high.
- What are some common applications of the SN74AVC4T245?
Common applications include automotive systems, consumer electronics, industrial control systems, communication equipment, and embedded systems.
