SN74CBT3245ADBQRE4

Overview

The SN74CBT3245ADBQRE4 is an octal FET bus switch manufactured by Texas Instruments. It provides eight bits of high-speed TTL-compatible bus switching in a 20-pin SSOP (DBQ) package. The device operates within a supply voltage range of 4 V to 5.5 V and supports an operating temperature range from -40°C to 85°C. Key electrical characteristics include a maximum on-state resistance of 12 ohms at VCC = 5V with VI = 2.4V, and a typical propagation delay of 0.25 ns at VCC = 5V.

Feature Summary

• Provides eight bits of bidirectional data transfer between port A and port B controlled by the OE input.
• Features low on-state resistance for minimal signal path distortion and propagation delay.
• Compatible with standard '245-type pinout configurations across multiple package styles.

Applications

• High-speed data bus switching applications requiring TTL compatibility.
• Portable systems utilizing single-supply operation.
• Memory and flash card controller interfaces.

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and moisture sensitivity level. Confirm RoHS compliance status and lead finish specifications directly with the supplier or official datasheets prior to procurement. Ensure that the component meets all environmental and reliability standards required for the intended application environment.

Selection Notes

Select this component when an octal bus switch with TTL-compatible inputs and low on-resistance is required. Consider the 20-SSOP package dimensions for PCB layout constraints. Evaluate the 4V to 5.5V supply voltage range against system power rails. Verify thermal performance requirements based on the specific package thermal impedance ratings provided in the datasheet.

Part Context

This part belongs to the SN74CBT3245A family of octal FET bus switches. It shares functional similarities with other devices in the series but differs in packaging and specific electrical parameters. The DBQ suffix indicates a specific SSOP variant designed for surface-mount assembly. It serves as a digital interface solution for connecting two 8-bit buses.

Replacement Considerations

SN74CBT3245ADBR