74LVT2245SJ

Overview

The onsemi 74LVT2245SJ is an octal bidirectional transceiver featuring 3-STATE outputs and integrated 25 Ω series resistors in the B port. It operates within a supply voltage range of 2.7 V to 3.6 V, supporting TTL interface capability to 5V systems. The device provides output drive capabilities of -12 mA/+12 mA on the B port and -32 mA/+64 mA on the A port. Propagation delays are specified at 1.2 ns minimum and up to 5.1 ns maximum depending on direction and voltage. It utilizes BiCMOS technology for high-speed operation with low power dissipation.

Feature Summary

• Integrated 25 Ω series resistors on B port outputs reduce overshoot and undershoot
• Bidirectional data flow controlled by Transmit/Receive input
• Power-up/down high impedance prevents glitch-free bus loading
• Compatible with 5V logic environments despite low voltage operation

Applications

• Bus-oriented applications requiring bidirectional data communication
• Interfaces between 3.3V logic and 5V systems
• High-speed asynchronous data transmission lines

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package type matches the 20-Lead Small Outline Package (SOP) specification. Check datasheet revision status as this part may be discontinued or subject to product change notices. Ensure environmental compliance documentation aligns with project requirements.

Selection Notes

Select this component when designing circuits requiring octal bidirectional buffering with built-in termination resistance. Consider the specific drive current requirements of the A and B ports. Evaluate propagation delay specifications against system timing constraints. Verify that the operating temperature range meets environmental conditions.

Part Context

This device belongs to the LVT logic family, designed for low-voltage digital applications. It serves as a bridge between different voltage domains while maintaining signal integrity through integrated series resistors. The SOP package offers a compact footprint suitable for space-constrained designs.

Replacement Considerations

Check for equivalent parts from other manufacturers offering similar octal transceiver functionality with integrated series resistors. Verify pin compatibility and electrical characteristics match before substitution.