SN74LVC245APWRE4

Overview

Category: Integrated Circuit
Use: Level Shifter/Transceiver
Characteristics: Low Voltage, Bi-directional, 8-bit, Non-Inverting
Package: TSSOP (Thin Shrink Small Outline Package)
Essence: Transfers data between different voltage domains
Packaging/Quantity: Tape and Reel, 2500 pieces per reel

Specifications

Supply Voltage Range: 1.65V to 5.5V
High-Level Input Voltage: 2V to VCC + 0.5V
Low-Level Input Voltage: -0.5V to 0.8V
High-Level Output Voltage: VCC - 0.5V
Low-Level Output Voltage: 0.5V
Maximum Operating Frequency: 80MHz
Number of Channels: 8
Input/Output Type: Tri-State

Pin Configuration

The SN74LVC245APWRE4 has a total of 20 pins. The pin configuration is as follows:

DIR (Direction Control)
OE (Output Enable)
A1 (Input/Output Port A, Bit 1)
A2 (Input/Output Port A, Bit 2)
A3 (Input/Output Port A, Bit 3)
A4 (Input/Output Port A, Bit 4)
A5 (Input/Output Port A, Bit 5)
A6 (Input/Output Port A, Bit 6)
A7 (Input/Output Port A, Bit 7)
A8 (Input/Output Port A, Bit 8)
GND (Ground)
B8 (Input/Output Port B, Bit 8)
B7 (Input/Output Port B, Bit 7)
B6 (Input/Output Port B, Bit 6)
B5 (Input/Output Port B, Bit 5)
B4 (Input/Output Port B, Bit 4)
B3 (Input/Output Port B, Bit 3)
B2 (Input/Output Port B, Bit 2)
B1 (Input/Output Port B, Bit 1)
VCC (Supply Voltage)

Functional Features

Bi-directional data transfer between two voltage domains
Non-inverting logic translation
Automatic direction control based on DIR pin
Output enable/disable control using OE pin
Tri-state outputs for bus sharing

Advantages and Disadvantages

Advantages

Wide supply voltage range allows compatibility with various systems
High-speed operation up to 80MHz
Low power consumption
Small package size for space-constrained applications
Easy integration into existing designs

Disadvantages

Limited number of channels (8)
Not suitable for high-voltage applications

Working Principles

The SN74LVC245APWRE4 is a level shifter/transceiver integrated circuit that facilitates the bidirectional transfer of data between two voltage domains. It operates by automatically detecting the direction of data flow based on the DIR pin. When the DIR pin is set to logic high, data is transferred from Port A to Port B, and when it is set to logic low, data is transferred in the opposite direction.

The OE pin enables or disables the outputs, allowing the device to be used in bus-sharing applications. The tri-state outputs ensure that multiple devices can be connected to the same bus without interfering with each other.

Detailed Application Field Plans

The SN74LVC245APWRE4 is commonly used in various applications that require level shifting or bidirectional data transfer between different voltage domains. Some of the typical application fields include:

Microcontroller interfacing with peripherals operating at different voltage levels
Communication systems involving multiple voltage domains
Data acquisition systems with mixed voltage sensors
Industrial automation and control systems
Automotive electronics

Detailed and Complete Alternative Models

SN74LVC245A
SN74LVCH245A
SN74LVC244A
SN74LVCH244A
74LVC245
74LVCH245

These alternative models offer similar functionality and can be considered as replacements for the SN74LVC245APWRE4, depending on specific requirements and availability.

In conclusion, the SN74LVC245APWRE4 is a versatile integrated circuit that enables level shifting and bidirectional data transfer between different voltage domains. Its compact package, wide supply voltage range, and high-speed operation make it suitable for various applications in different industries. However, its limited number of channels and unsuitability for high-voltage applications should be

Seznam 10 běžných otázek a odpovědí souvisejících s aplikací SN74LVC245APWRE4 v technických řešeních

Sure! Here are 10 common questions and answers related to the application of SN74LVC245APWRE4:

Q: What is SN74LVC245APWRE4? A: SN74LVC245APWRE4 is a bidirectional octal bus transceiver with 3-state outputs, commonly used in digital systems.
Q: What is the operating voltage range for SN74LVC245APWRE4? A: The operating voltage range for SN74LVC245APWRE4 is typically between 1.65V and 5.5V.
Q: How many data lines can SN74LVC245APWRE4 handle? A: SN74LVC245APWRE4 can handle 8 data lines, as it is an octal (8-bit) transceiver.
Q: Can SN74LVC245APWRE4 be used for level shifting between different voltage domains? A: Yes, SN74LVC245APWRE4 can be used for level shifting between different voltage domains, as long as the voltage levels are within its operating range.
Q: Does SN74LVC245APWRE4 support 3-state outputs? A: Yes, SN74LVC245APWRE4 supports 3-state outputs, which means it can effectively disconnect the output from the bus when not needed.
Q: What is the maximum data transfer rate supported by SN74LVC245APWRE4? A: SN74LVC245APWRE4 can support data transfer rates up to 100 Mbps.
Q: Can SN74LVC245APWRE4 be used for bi-directional communication between two microcontrollers? A: Yes, SN74LVC245APWRE4 can be used for bi-directional communication between two microcontrollers or any other digital devices.
Q: Does SN74LVC245APWRE4 have built-in ESD protection? A: Yes, SN74LVC245APWRE4 has built-in ESD protection, which helps protect the device from electrostatic discharge.
Q: Can SN74LVC245APWRE4 handle high-speed signals? A: Yes, SN74LVC245APWRE4 is designed to handle high-speed signals and is suitable for various applications requiring fast data transfer.
Q: What package options are available for SN74LVC245APWRE4? A: SN74LVC245APWRE4 is available in a TSSOP-20 package, which is a small surface-mount package commonly used in electronic systems.

Please note that these answers are general and may vary depending on specific application requirements and datasheet specifications.