Texas Instruments SN74AVCH1T45 Dual-Supply Bus Transceiver
Texas Instruments SN74AVCH1T45 Dual-Supply Bus Transceiver is a single-bit, non-inverting bus transceiver that uses two separate configurable power-supply rails. The A port is designed to track VCCA, and the B port is designed to track VCCB. VCCA and VCCB accept any supply voltage from 1.2V to 3.6V. This feature allows universal bi-directional low-voltage translation between the 1.2V, 1.5V, 1.8V, 2.5V, and 3.3V voltage nodes.
The SN74AVCH1T45 is designed for asynchronous communication between two data buses. The device transmits data from either the B bus to the A bus or from the A bus to the B bus. This feature depends upon the logic level at the direction-control (DIR) input. The Texas Instruments SN74AVCH1T45 is designed to reference the DIR input to VCCA.
Features
- Available in Texas Instruments’ NanoStar™ integrated circuit package
- Available in Texas Instruments’ NanoFree™ package
- Control inputs (DIR) VIH and VIL levels are referenced to VCCA voltage
- Bus hold on data inputs eliminates the need for external pullup and pulldown resistors
- VCC isolation
- Fully configurable dual-rail design
- I/Os are 4.6V tolerant
- Ioff supports partial-power-down mode operation
- Typical max data rates
- 500Mbps (1.8V to 3.3V translation)
- 320Mbps (<1.8V to 3.3V translation)
- 320Mbps (translate to 2.5V or 1.8V)
- 280Mbps (translate to 1.5V)
- 240Mbps (translate to 1.2V)
- Latch-up performance exceeds 100mA per JESD 78, class II
- ESD protection exceeds JESD 22
- 200V human-body model (A114-A)
- 200V machine model (A115-A)
- 1000V charged-device model (C101)
Applications
- Personal electronics
- Industrial
- Enterprise
- Telecommunications
Additional Resources
- Application Note: Understanding Transient Drive Strength vs. DC Drive Strength in Level-Shifters
- Selection Guide: Voltage Translation Buying Guide
- Selection Guide: Logic Guide
- Application Note: Understanding and Interpreting Standard-Logic Data Sheets
- Application Note: Voltage Translation Between 3.3V, 2.5V, 1.8V, and 1.5V Logic Standards
- User Guide: LOGIC Pocket Data Book
Logic Diagram (Positive Logic)
Development Tools
Texas Instruments 5-8-LOGIC-EVM Evaluation Module
Developed to support leaded Logic devices in the DBV, DCK, DCT, DCU, and DRL packages.
Texas Instruments AVCLVCDIRCNTRL-EVM Direction Evaluation Module
Offers support for 1, 2, 4, and 8-ch LVC and AVC family direction-controlled translation devices.
Paskelbta: 2025-02-14
| Atnaujinta: 2025-02-24