SN74ALS245A-1NSR

Overview

The SN74ALS245A-1NSR is an octal bus transceiver from the Texas Instruments SN74ALS series, housed in a 20-SOIC package. It operates within a supply voltage range of 4.5 V to 5.5 V and supports a temperature range of 0°C to +70°C. Key electrical parameters include a propagation delay of 14 ns, low-level output current of 24 mA, and high-level output current of -15 mA.

Feature Summary

• Provides bidirectional data transmission via eight non-inverting channels with three-state outputs for effective bus management.

Applications

• Mobile applications requiring low power consumption and high-speed operation
• Clock drivers and buffer circuits
• Memory module data bus transceivers

Procurement Notes

Verify the specific suffix 'A-1' against the manufacturer's official documentation to confirm pinout and functional compatibility. Ensure the SOIC-20 package dimensions match the target PCB footprint. Confirm RoHS compliance status through the latest environmental declaration before finalizing procurement.

Selection Notes

Select this component when designing systems that require robust bidirectional data transfer between microprocessors and memory or peripheral devices. The ALS logic family offers a balance of speed and power dissipation suitable for standard 5V digital logic environments.

Part Context

This device belongs to the SN74ALS (Advanced Low-power Schottky) family, known for improved performance over standard TTL. The SN74ALS245 variant specifically addresses the need for wide-bus data routing in complex digital architectures.

Replacement Considerations

SN74ALS245ANSR is a verified equivalent part number offering identical functionality and specifications.