SN74LS653NT

Buffers, Drivers, Receivers, Transceivers Overview

The SN74LS653NT is an octal bus transceiver and register from the Texas Instruments LS series. It features eight D-type latches with inverted outputs and three-state capability. The device operates on a single 5V supply, typically between 4.75V and 5.25V. It supports TTL input and output levels. The package is a 24-pin PDIP. Propagation delay is specified at 30 ns. Low-level output current is 8 mA, while high-level output current is -400 µA. Operating temperature ranges from 0°C to 70°C.

Buffers, Drivers, Receivers, Transceivers Feature Summary

• Integrates eight D-type latches with transparent mode control for data storage.
• Provides bidirectional bus transmission with three-state output isolation.
• Features inverted logic polarity for signal inversion during transfer.
• Supports direct interface with standard TTL logic families.

Buffers, Drivers, Receivers, Transceivers Applications

• Bidirectional data buffering in microprocessor systems
• Temporary storage of address or data words on system buses
• Isolation of driving circuits from load capacitance

Buffers, Drivers, Receivers, Transceivers Procurement Notes

Verify the specific suffix 'NT' indicates the bulk packaging format and PDIP-24 leaded package configuration. Confirm the component belongs to the LS logic family rather than ALS or AS variants, as electrical characteristics differ significantly. Ensure the datasheet matches the manufacturing date code for compliance requirements. Check for any specific moisture sensitivity level handling instructions associated with the bulk tray shipment method.

Buffers, Drivers, Receivers, Transceivers Selection Notes

Select this component when an octal registered transceiver with inverted outputs is required for TTL-based designs. It is suitable for applications needing both temporary data storage and bidirectional bus driving. Compare propagation delays and output drive strengths against other LS series alternatives if timing constraints are tight. Ensure the system voltage aligns with the standard 5V TTL operating range.

Buffers, Drivers, Receivers, Transceivers Part Context

This part belongs to the Texas Instruments 74LS653 family of octal bus transceivers and registers. It is functionally similar to the SN74ALS653 but utilizes Low-power Schottky (LS) technology for lower power consumption compared to standard TTL. The device serves as a bridge between processors and peripheral devices, offering both latching and tri-state buffering capabilities in a single integrated circuit package.

Buffers, Drivers, Receivers, Transceivers Replacement Considerations

The SN74LS653N is a pin-compatible alternative with identical functionality but may use different internal die specifications. Verify that any substitute maintains the same inverted output polarity and three-state control logic. Ensure the replacement component supports the same 5V operating voltage and TTL input thresholds.