IDT74LVC245APGG

Overview

The IDT74LVC245APGG is an octal bus transceiver utilizing 0.5 micron CMOS technology, designed for asynchronous communication between two buses (A and B). It operates within a supply voltage range of 2.7V to 3.6V and features 3-state outputs with ±24mA drive capability. The device supports hot insertion and includes inputs with hysteresis for improved noise margins. All I/O pins are 5V tolerant, allowing direct interfacing with 5V devices. It is housed in a TSSOP-20 package and functions over an industrial temperature range of -40°C to +85°C.

Feature Summary

• Provides bidirectional data flow control via DIR pin while OE overrides direction to disable ports
• Features 5V tolerant inputs and outputs compatible with mixed 3.3V/5V systems
• Includes input hysteresis to enhance noise margin stability
• Supports hot insertion operations without system disruption

Applications

• Mixed voltage systems combining 5V and 3.3V logic levels
• Data communication equipment requiring bus isolation
• Telecommunication systems utilizing asynchronous bus architectures

Procurement Notes

Verify the specific suffix PGG corresponds to the TSSOP-20 Green package configuration as listed in the ordering information table. Confirm that the component meets the industrial temperature range requirements (-40°C to +85°C) specified for this part number variant. Ensure compatibility with 5V tolerant interfaces if integrating into mixed-voltage environments.

Selection Notes

Select this component when designing systems requiring robust bidirectional translation between 3.3V and 5V domains. The ±24mA output drivers support moderate to heavy loads while maintaining speed performance. Consider the 5V tolerance feature for seamless integration with legacy 5V peripherals without additional level shifting circuitry.

Part Context

This device belongs to the LVC245A series of octal bus transceivers manufactured by Integrated Device Technology (IDT), now part of Renesas Electronics. It is part of the broader 74LVC family designed for low-voltage CMOS applications. The 'A' designation typically indicates updated specifications or revisions within the standard 74-series logic lineage.

Replacement Considerations

Compatible substitutes include other 74LVC245 variants from manufacturers such as NXP, Texas Instruments, or ON Semiconductor, provided they offer identical TSSOP-20 packaging, 5V tolerance, and matching electrical characteristics.