SN74LVC245APW

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SN74LVC245APW

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IC TXRX NON-INVERT 3.6V 20TSSOP

365 日間品質保証

7*24 日間の品質保証

90-時間単位のサービス保証

1日間のアフターサービス保証

仕様

属性
Package Bulk,Tube
Series 74LVC
ProductStatus Active
LogicType Transceiver, Non-Inverting
NumberofElements 1
NumberofBitsperElement 8
OutputType 3-State
Current-OutputHighLow 24mA, 24mA
Voltage-Supply 1.65V ~ 3.6V
OperatingTemperature -40°C ~ 125°C (TA)
MountingType Surface Mount
Package/Case 20-TSSOP (0.173, 4.40mm Width)

概要

Description

The SN74LVC245APW is an octal bus transceiver integrated circuit (IC) designed for 3.3V VCC operation, commonly used in digital electronics to facilitate bidirectional data communication between buses. It features three-state outputs, which enhance its ability to prevent bus contention when multiple devices share a common data bus. The device comes with a direction control (DIR) input and an output enable (OE) input, allowing it to function as both a buffer and an inverter for the data lines.
Key features include low power consumption due to its CMOS technology, high-speed operation that exceeds traditional TTL logic performance, and compatibility with TTL input levels. This makes the SN74LVC245APW ideal for use in applications requiring high-speed data transfer and low power dissipation, such as in computers, networking equipment, and multiplexed systems.
The IC is housed in a Thin Shrink Small Outline Package (TSSOP), which saves space on printed circuit boards (PCBs). Its robust design also supports hot insertion, protecting circuits from damage during live insertion or removal.

Equivalent

The SN74LVC245APW is a octal bus transceiver with 3-state outputs from Texas Instruments. Equivalent products include:
1. 74LCX245 from ON Semiconductor
2. 74HC245 from NXP
3. 74ALVC245 from Fairchild/ON Semiconductor
4. MC74LCX245 from STMicroelectronics
5. SN74HC245 from Texas Instruments
These are all similar octal bus transceivers with 3-state outputs, though specifications may vary slightly. Always verify pin compatibility and electrical characteristics before substitution.

Features

The SN74LVC245APW is an octal bus transceiver designed for asynchronous two-way data communication between data buses. Key features include:
- Voltage Range: Operates over a voltage range from 1.65 V to 3.6 V, making it suitable for a variety of applications.
- Bidirectional Data Flow: Supports bidirectional data transfers with separate direction and enable pins.
- High-Speed Operation: Delivers fast signal switching with a maximum propagation delay of about 5.7 ns at 3.3 V.
- Drive Capability: Provides the capability to drive up to 24 mA (at 3.3 V) outputs, suitable for bus-oriented applications.
- Low Power Consumption: Features a low static power dissipation due to CMOS technology.
- Three-State Outputs: Outputs can be placed in a high-impedance state via the output enable pin, facilitating bus sharing.
- Latch-Up Performance: Exceeds 100 mA per JESD 78, Class II standards, enhancing reliability.
- ESD Protection: Provides good electrostatic discharge (ESD) protection with ratings exceeding 2000-V per MIL-STD-883, Method 3015.
These features make the SN74LVC245APW efficient for buffer, driver, and voltage-level translation applications in digital systems.

Pinout

The SN74LVC245APW is an 8-bit transceiver with 3-state outputs, commonly used for bidirectional data communication between buses. It has a total of 20 pins. The primary function of this transceiver is to allow data flow in either direction (A to B or B to A) depending on the direction control (DIR) pin. It features an output enable (OE) pin, which can disable the outputs to place them in a high-impedance state, effectively isolating the buses.
The pin configuration includes:
- 8 data bus pins on each side (A1-A8 and B1-B8).
- DIR (Direction Control) pin to set the data flow direction.
- OE (Output Enable) pin to control the high-impedance state of the outputs.
- VCC for power supply.
- GND for ground connection.
In summary, the SN74LVC245APW provides a means to handle digital signal direction and isolation, making it useful for memory interfacing and other digital communication applications.

Manufacturer

The SN74LVC245APW is manufactured by Texas Instruments (TI). Texas Instruments is a global semiconductor company that designs and produces a variety of analog and embedded processing chips. TI's products are used in a broad range of applications, from industrial and automotive electronics to consumer electronics and communications equipment. As a leading company in the semiconductor industry, Texas Instruments focuses on developing innovative technologies to support advancements in electronics and improve overall efficiency and performance in various sectors.

Application

The SN74LVC245APW is a bidirectional bus transceiver used in digital circuits for efficient data communication. Its primary application areas include:
1. Microcontroller Interfacing: Facilitates communication between microcontrollers and peripherals.
2. Data Bus Isolation: Acts as a buffer to isolate data buses and prevent bus contention.
3. Signal Level Translation: Converts voltage levels between different parts of a circuit.
4. Memory Address/Data Bus Driving: Drives address and data buses for memory access.
5. Peripheral Expansion: Enables the addition of more devices to a system bus.
Its low power consumption and high-speed operation make it suitable for portable and high-density applications.

Package

The SN74LVC245APW is a bus transceiver with 8-bit bidirectional data transmission, featuring a low voltage CMOS logic. The package type is TSSOP (Thin-Shrink Small Outline Package) with 20 pins.

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