SN74CBT3245APWE4

Overview

The SN74CBT3245A is an octal FET bus switch providing eight bits of high-speed TTL-compatible bus switching. It features a standard '245-type pinout and operates with a supply voltage range of 4 V to 5.5 V. The device offers low on-state resistance, typically 5 Ω at VCC = 4.5 V, enabling connections with minimal propagation delay. Propagation delay is specified as 0.25 ns maximum at VCC = 5 V. The component supports continuous channel currents up to 128 mA and functions within an operating temperature range of -40°C to 85°C.

Feature Summary

• Provides eight bits of high-speed bus switching with TTL-compatible input levels
• Features low on-state resistance for minimal signal propagation delay
• Maintains standard '245 device pinout across multiple package options

Applications

• High-speed data bus switching applications
• Portable systems requiring low power consumption
• Battery-powered equipment utilizing single-supply operation

Procurement Notes

Verify the specific ordering suffix to confirm the exact package type and moisture sensitivity level required for your assembly process. Confirm RoHS compliance status and lead finish specifications against current TI documentation before finalizing procurement orders.

Selection Notes

Select this component when an octal bidirectional bus switch with TTL compatibility is required. Ensure the design accommodates the 4 V to 5.5 V supply voltage range. Verify that the thermal impedance characteristics of the chosen package meet the system's heat dissipation requirements under maximum load conditions.

Part Context

This part belongs to the SN74CBT3245A family of octal FET bus switches manufactured by Texas Instruments. It serves as a high-speed interconnect solution designed to replace traditional mechanical relays or slower logic gates in digital circuit designs requiring efficient signal routing.

Replacement Considerations

Check the Package Option Addendum for current production status. Some variants like SN74CBT3245ADW are listed as obsolete. Verify if alternative packages such as SN74CBT3245APWR remain available for direct replacement.