CY54FCT245TLMB

Overview

The CY54FCT245TLMB is an octal bus transceiver with 3-state outputs in a 20-pin LCCC package. It operates within a supply voltage range of 4.5 V to 5.5 V and supports an operating temperature range of -55°C to 125°C. The device features noninverting bidirectional data flow controlled by T/R and OE inputs, with propagation delays up to 7.5 ns. It provides a maximum low-level output sink current of 48 mA and a high-level source current of 12 mA.

Feature Summary

• Supports partial-power-down mode operation via Ioff circuitry to prevent damaging backflow currents
• Provides ESD protection exceeding JESD 22 specifications for human-body, machine, and charged-device models
• Features edge-rate control circuitry to improve noise characteristics and ensure matched rise and fall times

Applications

• Bus-oriented applications requiring bidirectional data transfer
• Partial-power-down system designs utilizing Ioff functionality
• High-noise environments benefiting from edge-rate control

Procurement Notes

Verify the specific ordering suffix 'LMB' corresponds to the Leadless Ceramic Chip Carrier (LCCC) package configuration. Confirm that the MIL-PRF-38535 compliance requirements are met if applicable, as this affects testing parameters and availability. Ensure the procurement documentation explicitly references the extended industrial temperature range capabilities.

Selection Notes

Select this component when a wide operating temperature range extending to -55°C is required. The LCCC package offers distinct thermal and mechanical properties compared to plastic packages. Verify that the 48 mA sink current meets the load requirements, as it differs from the higher drive capability found in commercial grade variants.

Part Context

This part belongs to the FCT logic family, providing compatibility with F Logic standards. It serves as a military-grade or extended-temperature variant of the standard CY74FCT245T series. The device integrates eight noninverting buffers into a single monolithic structure designed for robust performance in demanding environments.

Replacement Considerations

CY54FCT245CTLMB