74LVT2245MTCX

Overview

The onsemi 74LVT2245MTCX is a low-voltage octal bidirectional transceiver featuring 3-state inputs and outputs. It operates within a supply voltage range of 2.7V to 3.6V and supports DC input voltages up to 5.5V, enabling interface with 5V systems. The device utilizes advanced BiCMOS technology for high-speed operation while maintaining low power dissipation. It includes an equivalent 25Ω series resistor in the B port outputs to reduce overshoot and undershoot. Propagation delays are specified between 1.2ns and 5.1ns depending on direction and voltage.

Feature Summary

• Provides bidirectional data transfer between A and B ports controlled by Transmit/Receive and Output Enable signals.
• Integrates equivalent 25Ω series resistors in B port outputs to minimize signal reflections.
• Supports live insertion and extraction with power-up/down high-impedance states to prevent bus glitches.
• Offers robust ESD protection exceeding 2000V human-body model and latch-up performance above 500mA.

Applications

• Bus-oriented memory and disk drive controller applications
• High-speed data transmission systems requiring level shifting
• Consumer electronics utilizing low-voltage logic interfaces

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package integrity and pin alignment against the TSSOP-20 specification prior to assembly. Review the latest datasheet revision for any updates to electrical characteristics or ordering information. Ensure compliance with RoHS standards as indicated in the product documentation.

Selection Notes

Select this component for designs requiring octal bidirectional buffering with mixed voltage domains. The 25Ω series resistance aids in signal integrity for high-speed traces. Verify that the required propagation delay fits within system timing constraints. Consider the 3-state output capability for shared bus architectures where multiple devices connect to the same lines.

Part Context

This device belongs to the LVT family of low-voltage CMOS logic components. It serves as a bridge between 3.3V logic circuits and 5V tolerant environments. The octal configuration allows simultaneous handling of eight-bit data words. It is fabricated using BiCMOS technology to balance speed and power efficiency.

Replacement Considerations

The 74LVTH2245MTCX is a variant with bushold inputs; verify if bushold functionality is required. Other packages such as SOIC-20 (74LVT2245WM) offer identical electrical specifications. Check for updated revisions from the manufacturer regarding pinout or electrical parameter changes.