DM74ALS245ASJ

Overview

The DM74ALS245ASJ is an octal 3-STATE bus transceiver from the Advanced Low-power Schottky (ALS) logic family, manufactured by onsemi. It contains eight pairs of logic elements configured for bidirectional data transfer between two buses. The device operates within a supply voltage range of 4.5V to 5.5V and supports a maximum propagation delay of 31ns. It features non-inverting outputs and is housed in a 20-Lead Small Outline Package (SOP), EIAJ TYPE II, with a width of 5.3mm.

Feature Summary

• Advanced oxide-isolated, ion-implanted Schottky TTL process
• Glitch-free bus operation during power up and down
• Low output impedance suitable for driving terminated transmission lines
• PNP inputs designed to reduce input loading

Applications

• Memory systems
• Microprocessor systems
• Asynchronous bidirectional data buses

Procurement Notes

Verify the specific package designation M20D corresponds to the 20-Lead SOP configuration. Confirm that the component meets the required operating temperature range of 0°C to +70°C. Ensure compatibility with the system's supply voltage limits between 4.5V and 5.5V before integration.

Selection Notes

Select this component when designing circuits requiring high-speed bidirectional data transfer with low power consumption. The ALS technology provides faster switching speeds compared to standard LS logic while maintaining lower power dissipation. Verify interface requirements with CMOS devices if necessary.

Part Context

This part belongs to the DM74ALS245A series of octal bus transceivers. It shares functional characteristics with other variants in the series but differs in physical packaging. The ASJ suffix specifically identifies the 20-Lead Small Outline Package (SOP) variant.

Replacement Considerations

SN74ALS245AN