SN74HC245DBR
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Texas Instruments SN74HC245DBR

Manufacturer No:
SN74HC245DBR
Manufacturer:
Texas Instruments
Package:
Tape & Reel (TR)
Description:
IC TXRX NON-INVERT 6V 20SSOP
Delivery:
Payment:
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Product Introduction

Overview

The SN74HC245DBR is an octal bus transceiver with 3-state outputs, manufactured by Texas Instruments. This device is designed for asynchronous two-way communication between data buses, allowing data transmission from the A bus to the B bus or from the B bus to the A bus, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) input can be used to disable the device, effectively isolating the buses. The SN74HC245DBR operates over a wide voltage range from 2 V to 6 V, making it versatile for various applications.

Key Specifications

Parameter Min Nom Max Unit
VCC Supply Voltage 2 5 6 V
VIH High-Level Input Voltage 1.5 (VCC=2V), 3.15 (VCC=4.5V), 4.2 (VCC=6V) V
VIL Low-Level Input Voltage 0.5 (VCC=2V), 1.35 (VCC=4.5V), 1.8 (VCC=6V) V
Operating Free-Air Temperature -40 85 °C
Continuous Output Current ±35 mA
Package Type 20-SSOP (0.209", 5.30mm Width)

Key Features

  • Wide operating voltage range from 2 V to 6 V.
  • High-current 3-state outputs capable of driving bus lines directly or up to 15 LSTTL loads.
  • Output-enable (OE) input to disable the device and isolate the buses.
  • Direction-control (DIR) input to control data transmission between A and B buses.
  • Push-pull output type with current capabilities of 7.8 mA for both high and low states.
  • Surface mount package with 20 pins.

Applications

The SN74HC245DBR is suitable for various applications requiring asynchronous two-way communication between data buses. These include:

  • Data transmission and reception in microprocessor systems.
  • Bus interfacing and isolation in digital systems.
  • Peripheral device communication in embedded systems.
  • General-purpose logic and data transfer applications.

Q & A

  1. What is the primary function of the SN74HC245DBR?

    The SN74HC245DBR is an octal bus transceiver designed for asynchronous two-way communication between data buses.

  2. What is the operating voltage range of the SN74HC245DBR?

    The device operates over a voltage range from 2 V to 6 V.

  3. How does the direction-control (DIR) input work?

    The DIR input controls the direction of data transmission between the A and B buses.

  4. What is the purpose of the output-enable (OE) input?

    The OE input can be used to disable the device, effectively isolating the buses.

  5. What type of output does the SN74HC245DBR have?

    The device has push-pull outputs.

  6. What is the maximum continuous output current of the SN74HC245DBR?

    The maximum continuous output current is ±35 mA.

  7. What is the operating temperature range of the SN74HC245DBR?

    The device operates over a temperature range from -40°C to 85°C.

  8. What package type is the SN74HC245DBR available in?

    The device is available in a 20-SSOP package.

  9. Can the SN74HC245DBR drive LSTTL loads?

    Yes, it can drive up to 15 LSTTL loads.

  10. How many bits per element does the SN74HC245DBR have?

    The device has 8 bits per element.

Product Attributes

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:7.8mA, 7.8mA
Voltage - Supply:2V ~ 6V
Operating Temperature:-40°C ~ 85°C (TA)
Mounting Type:Surface Mount
Package / Case:20-SSOP (0.209", 5.30mm Width)
Supplier Device Package:20-SSOP
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Similar Products

Part Number SN74HC245DBR SN74HC245DWR SN74HC240DBR SN74HC244DBR SN74HC245ADBR
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Product Status Active Active Active Active Active
Logic Type Transceiver, Non-Inverting Transceiver, Non-Inverting Buffer, Inverting Buffer, Non-Inverting Transceiver, Non-Inverting
Number of Elements 1 1 2 2 1
Number of Bits per Element 8 8 4 4 8
Input Type - - - - -
Output Type 3-State 3-State 3-State 3-State 3-State
Current - Output High, Low 7.8mA, 7.8mA 7.8mA, 7.8mA 7.8mA, 7.8mA 7.8mA, 7.8mA 7.8mA, 7.8mA
Voltage - Supply 2V ~ 6V 2V ~ 6V 2V ~ 6V 2V ~ 6V 2V ~ 6V
Operating Temperature -40°C ~ 85°C (TA) -40°C ~ 85°C (TA) -40°C ~ 85°C (TA) -40°C ~ 85°C (TA) -40°C ~ 85°C (TA)
Mounting Type Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package / Case 20-SSOP (0.209", 5.30mm Width) 20-SOIC (0.295", 7.50mm Width) 20-SSOP (0.209", 5.30mm Width) 20-SSOP (0.209", 5.30mm Width) 20-SSOP (0.209", 5.30mm Width)
Supplier Device Package 20-SSOP 20-SOIC 20-SSOP 20-SSOP 20-SSOP

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