SN74CBT3383CPW

Overview

The SN74CBT3383CPW is a high-speed TTL-compatible FET bus-exchange switch manufactured by Texas Instruments. It operates within a supply voltage range of 4 V to 5.5 V and supports bidirectional data flow with near-zero propagation delay. The device features active undershoot protection on the A and B ports up to −2 V, low ON-state resistance (ron = 3 Ω typical), and low input/output capacitance (Cio(OFF) = 8 pF typical). It includes Ioff support for partial-power-down mode operation and latch-up performance exceeding 100 mA per JESD 78, Class II.

Feature Summary

• Bidirectional data flow with near-zero propagation delay
• Active undershoot protection circuitry on A and B ports
• Low ON-state resistance characteristics
• Supports partial-power-down mode via Ioff feature

Applications

• PCI interface
• Memory interleaving
• Bus isolation
• Low-distortion signal gating

Procurement Notes

Verify the exact ordering suffix 'PW' corresponds to the TSSOP-24 package configuration. Confirm that the component status remains ACTIVE for new designs. Ensure compliance with RoHS and Green manufacturing standards as specified in the datasheet. Check for any specific moisture sensitivity level requirements during storage and handling.

Selection Notes

Select this component when designing systems requiring a 10-bit bus switch or a 5-bit bus-exchange switch. It is suitable for applications needing TTL-compatible control inputs and support for various signaling levels from 0.8 V to 5 V. Consider its low power consumption and high ESD performance for robust digital and analog signal routing.

Part Context

This part belongs to the SN74CBT3383C series of high-speed FET bus-exchange switches. It is designed to provide minimal propagation delay and low ON-state resistance. The device is fully specified for partial-power-down applications and offers isolation during power off, making it ideal for complex bus architectures.

Replacement Considerations

SN74CBT3383CDW

FAQ

How does the SN74CBT3383CPW handle partial-power-down scenarios?

The device supports partial-power-down mode through its Ioff feature, which ensures that damaging current will not backflow through the device when it is powered down.

What is the function of the BE and BX inputs?

The BE (bus exchange) input controls the output-enable state, while the BX (bus exchange select) input determines the data path between the A and B ports, allowing for data exchanging between four signal ports.