SN74HCT245 Octal Bus Transceivers With 3-State Outputs | TI.com

SN74HCT245 (ACTIVE) Octal Bus Transceivers With 3-State Outputs

 

Description

The SNx4HCT245 octal bus transceivers are designed for asynchronous two-way communication between data buses. The control-function implementation minimizes external timing requirements.

The SNx4HCT245 devices allow data transmission from the A bus to the B bus or from the B bus to the A bus, depending upon the logic level at the direction-control (DIR) input. The output-enable (OE) input can be used to disable the device so that the buses are effectively isolated.

Features

  • Operating Voltage Range of 4.5 V to 5.5 V
  • High-Current 3-State Outputs Drive Bus Lines Directly or up To 15-LSTTL Loads
  • Low Power Consumption, 80-µA Maximum ICC
  • Typical tpd = 14 ns
  • ±6-mA Output Drive at 5 V
  • Low Input Current of 1 µA Maximum
  • Inputs Are TTL-Voltage Compatible

Parametrics

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Part number Order Technology Family VCC (Min) (V) VCC (Max) (V) Bits (#) Voltage (Nom) (V) F @ nom voltage (Max) (MHz) ICC @ nom voltage (Max) (mA) tpd @ nom Voltage (Max) (ns) IOL (Max) (mA) IOH (Max) (mA) Rating Operating temperature range (C)
SN74HCT245 Order now HCT     4.5     5.5     8     5     25     0.08     25     6     -6     Catalog     -40 to 85    
SN54HCT245 Samples not available HCT     4.5     5.5     8     5     25     0.08     25     6     -6     Military     -55 to 125