SN74LVC828ADWR

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LVC828ADWR is a 10-bit buffer and bus driver with 3-state outputs manufactured by Texas Instruments. It operates from a supply voltage range of 1.65 V to 3.6 V. The device features inverting data at its outputs and includes two active-low output-enable inputs (OE1, OE2) that function as a 2-input AND gate; if either input is high, all ten outputs enter a high-impedance state. Inputs accept voltages up to 5.5 V, supporting mixed-mode signal operation with 5-V I/O while powered by 3.3 V. Maximum propagation delay is 6.7 ns at 3.3 V. The package is SOIC (DW), containing 24 pins.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Supports mixed-mode signal operation on all ports, allowing 5-V input/output voltage compatibility with 3.3-V VCC.
• Features Ioff circuitry to support partial-power-down mode, disabling outputs to prevent damaging current backflow during power down.
• Provides a high-performance bus interface designed for wide data paths or buses carrying parity.
• Includes ESD protection exceeding JESD 22 standards for human-body, machine, and charged-device models.

Buffers, Drivers, Receivers, Transceivers Applications

• Wide data path bus interfaces
• Buses carrying parity information
• Mixed 3.3-V/5-V system environments

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific ordering suffix 'DW' corresponds to the SOIC package type when sourcing this component. Confirm the manufacturer is Texas Instruments to ensure authenticity. Check the datasheet for absolute maximum ratings regarding supply voltage and input clamp currents to avoid permanent damage during installation. Ensure unused inputs are held at VCC or GND to maintain proper device operation.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component for applications requiring 10-bit data buffering with 3-state control in low-voltage systems. The dual active-low enable inputs provide flexible control logic. Consider the 5.5-V tolerant inputs if interfacing with higher voltage legacy devices. Verify thermal impedance requirements for the SOIC package based on the expected operating temperature range of -40°C to 85°C.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the SN74LVC828A series of 10-bit buffers/drivers with 3-state outputs. Other available packages in this series include TSSOP (PW), TVSOP (DGV), SSOP (DB), and DIP (NS). The ADWR suffix specifically denotes the SOIC package variant supplied in a reel format. All variants share identical electrical characteristics and functionality.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

Compatible substitutes within the same family include SN74LVC828ADW (tube packaging) and SN74LVC828APW (TSSOP package). These parts offer identical electrical performance but differ in physical package dimensions and shipping quantities. Verify pinout compatibility before substitution.

Buffers, Drivers, Receivers, Transceivers FAQ

How does the output-enable logic function?

The SN74LVC828A has two active-low output-enable inputs (OE1 and OE2) that act as a 2-input AND gate. If either OE1 or OE2 is high, all ten outputs enter the high-impedance state.

What is the purpose of the Ioff feature?

The Ioff circuitry supports partial-power-down mode by disabling the outputs. This prevents damaging current backflow through the device when it is powered down but other parts of the system remain energized.

Can this device interface between 3.3-V and 5-V logic levels?

Yes, the inputs accept voltages up to 5.5 V, allowing the device to be used as a translator in mixed 3.3-V/5-V system environments while operating from a 3.3-V supply.