The SN74LVCH8T245PWR from Texas Instruments is an 8-bit non-inverting dual-supply bus transceiver designed for bidirectional voltage-level translation between digital systems operating at different logic voltages. It uses two independently configurable power rails, with the A port referenced to VCCA and the B port referenced to VCCB. Both supply rails support 1.65V to 5.5V, allowing translation among common 1.8V, 2.5V, 3.3V and 5V logic levels.
The device supports 8-bit bidirectional parallel data transfer. The DIR input selects the direction of data flow between the A and B buses, while the OE input can place both output ports into a high-impedance state. With a maximum data rate of 200Mbps and a specified propagation-delay parameter of 6.5ns, the device is suitable for high-speed digital interface and logic-level translation applications.
Integrated bus-hold circuitry maintains unused or undriven inputs at a valid logic state, reducing the need for external pull-up or pull-down resistors. Additional features include partial-power-down support with Ioff, VCC isolation, output enable and overvoltage-tolerant inputs, helping improve reliability in systems that use multiple supply domains.
The SN74LVCH8T245PWR is supplied in a 24-pin TSSOP (PW) surface-mount package and operates over a temperature range of -40°C to +85°C. The PWR ordering option is supplied in Large Tape & Reel packaging with 2,000 devices per reel, making it suitable for automated PCB assembly and volume production.
Key Features:
- Part Number: SN74LVCH8T245PWR
- Manufacturer: Texas Instruments
- Device Type: Bus Transceiver / Voltage Level Translator
- Number of Bits: 8
- Direction: Bidirectional
- Output Type: 3-State
- Supply Architecture: Dual Supply
- VCCA Range: 1.65V to 5.5V
- VCCB Range: 1.65V to 5.5V
- Maximum Data Rate: 200Mbps
- Propagation Delay: 6.5ns
- Features: Bus Hold, Output Enable, Ioff, VCC Isolation
- Technology Family: LVC
- Package: TSSOP-24 (PW)
- Operating Temperature: -40°C to +85°C
- Packaging: Large Tape & Reel, 2,000 pcs
- Applications: MCU, FPGA, processor interfaces, communication equipment and multi-voltage digital systems
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