SN74HSTL162822DGGR

Latches Overview

The SN74HSTL162822DGGR is a 14-bit to 28-bit D-type latch designed for 3.15-V to 3.45-V VCC operation. It accepts HSTL levels on inputs and drives LVTTL levels on outputs. The device features two independent 14-bit latches, each controlled by its own latch-enable (LE) input. Outputs include equivalent 25-ohm series resistors and sink up to 12 mA. Propagation delay from LE to Q is 1.7 ns typical at VCC = 3.3 V. Operating temperature range is -40°C to 90°C.

Latches Feature Summary

• Converts HSTL input signals to LVTTL output levels
• Integrates 25-ohm series resistors in all output paths
• Provides dual independent 14-bit latch control via separate enable pins

Latches Applications

• Driving memory address buses
• Connecting to two banks of memory
• HSTL-to-LVTTL level translation interfaces

Latches Procurement Notes

Verify the specific ordering suffix against the manufacturer's current package and environmental data sheets. Confirm that the component status matches design requirements, as availability may vary between active production and obsolete classifications depending on the specific revision date.

Latches Selection Notes

Select this component when interfacing HSTL-compliant sources with LVTTL-compatible loads. Ensure the power supply voltage remains within the 3.15-V to 3.45-V range. Verify that the 64-pin TSSOP package dimensions fit the target PCB layout constraints.

Latches Part Context

This part belongs to the Widebus family of logic devices from Texas Instruments. It is specifically engineered for high-density memory addressing applications requiring robust signal integrity through integrated series termination resistors.

Latches Replacement Considerations

Check for SN74HSTL162822DGGRE4 or SN74HSTL162822DGGRG4 as potential equivalents. Verify RoHS compliance and lead finish specifications before substitution.