SN74LVC245APWTE4

Series:	74LVC
Packaging:	Tape & Reel (TR)
Part Status:	Active
Logic Type:	Transceiver, Non-Inverting
Number of Elements:	1
Number of Bits per Element:	8
Input Type:	--
Output Type:	3-State
Current - Output High, Low:	24mA, 24mA
Voltage - Supply:	1.65 V ~ 3.6 V
Operating Temperature:	-40°C ~ 125°C (TA)
Mounting Type:	Surface Mount
Package / Case:	20-TSSOP (0.173", 4.40mm Width)
Supplier Device Package:	20-TSSOP
Base Part Number:	74LVC245

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Introduction

The SN74LVC245APWTE4 is an integrated circuit (IC) that is part of Texas Instruments’ low voltage CMOS (LVCMOS) family. It is specifically designed for use with +3.3V LVTTL, +2.5V LVCMOS, Repetitive Offset Rate (ROR) and +1.2V LVCMOS logic families. It is specified at a frequency of up to 66MHz and can operate at temperatures ranging from -40 to +85°C. This IC offers features such as hot-plug detect, true TTL input thresholds and I/O protection up to 3.6V. It offers broadcast, multicast, and multicast with masking capabilities and operates in both asynchronous and synchronous operations. This IC also supports a wide range of PC board designs, system interface, and I/O buffer applications. It is generally used as an interface between multiple logic families and makes use of an on-board transceiver to buffer incoming and outgoing signals.

Application Field and Working Principle

The SN74LVC245APWTE4 is typically used as a Logic-Buffer, Driver, Receiver, and Transceiver. This IC can operate in two modes: asynchronous and synchronous.Asynchronous ModeIn asynchronous mode, the SN74LVC245APWTE4 acts as a simple logic buffer with low power dissipation. In this mode, the output signals are determined by the logic levels of the input signals. This IC can be used to acquire and transmit signals between logic families with different voltage levels. It also supports multiple logic level thresholds while providing logic buffering, clamping protection, and ESD protection.Synchronous ModeIn synchronous mode, the SN74LVC245APWTE4 acts as both a transmitter and receiver. This is achieved by incorporating a 16-bit universal transceiver on-chip. In synchronous mode, the transceiver can transmit and receive data in both directions. The incoming and outgoing signals are buffered and clamped to prevent damage to the IC. The transceiver also supports broadcast, multicast, and multicast with masking capabilities. The SN74LVC245APWTE4 can also be used for direct memory access (DMA) operations. In DMA, multiple devices can read and write data simultaneously without requiring processors for the I/O operations. This IC enables the fast transfer of data between multiple devices that are using different logic families.

Conclusion

The SN74LVC245APWTE4 is a versatile and low-power integrated circuit from Texas Instruments. This IC is classified in the Logic - Buffers, Drivers, Receivers and Transceivers category. It can be used to interface between multiple logic families with different voltage levels and perform various complex data transfer operations. It is a reliable and powerful IC that can be used in a wide range of applications.

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