74LVC245AT20-13

Overview

The Diodes Incorporated 74LVC245AT20-13 is an octal bus transceiver with 3-state outputs designed for asynchronous communication between data buses. It operates within a supply voltage range of 1.65V to 3.6V and features inputs tolerant to 5.5V, enabling mixed-voltage applications. The device supports partial power down via I_OFF circuitry to prevent backflow current. It provides high drive capability, sinking or sourcing up to 24mA at VCC = 3V. Propagation delay is typically 3.8ns at 3.3V. The component is housed in a TSSOP-20 package.

Feature Summary

• Supports bidirectional data transmission between A and B buses controlled by the DIR input
• Includes Schmitt trigger action at all inputs for noise immunity
• Features I_OFF circuitry to disable outputs during partial power down
• Provides ESD protection exceeding 2000-V Human Body Model

Applications

• Bus driving
• Power down signal isolation
• General purpose logic
• Networking computer peripherals
• TV, DVD, DVR, Set Top Box

Procurement Notes

Verify the specific ordering suffix -13 corresponds to the 13-inch tape and reel packaging configuration. Confirm that the T20 package code matches the required TSSOP-20 footprint dimensions. Ensure compatibility with RoHS and halogen-free requirements if applicable to your manufacturing standards. Cross-reference the datasheet revision DS35890 Rev. 1-2 for accurate electrical specifications.

Selection Notes

Select this component when interfacing between 1.65V to 3.6V systems and 5V tolerant peripherals. The 24mA output drive is suitable for moderate capacitive loads. Consider the TSSOP-20 package size constraints. Verify thermal resistance values if operating near maximum temperature limits. Ensure unused inputs are tied to VCC or ground to prevent excessive current consumption.

Part Context

This part belongs to the 74LVC245A family of octal bus transceivers manufactured by Diodes Incorporated. It is functionally compatible with other industry-standard 74LVC245 devices but offers specific packaging and electrical characteristics defined by Diodes. The T20 designation specifically identifies the TSSOP-20 surface-mount package variant.

Replacement Considerations

Direct substitutes include other manufacturers' 74LVC245 variants in TSSOP-20 packages. Verify pinout compatibility and electrical parameters such as propagation delay and output current before substitution. Check for equivalent I_OFF functionality if partial power down support is required.