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CD74HC245M SOIC-20
TI
  • CD74HC245M
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CD74HC245M

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High Speed CMOS Logic Octal-Bus Transceiver, Three-State, Non-Inverting

Manufacturer :
Texas Instruments, Inc
Package/Case :
SOIC-20
Product Categories :
Bus Transceivers
Datasheet:
CD74HC245M PDF
RoHs Status:
Rohs
Marking Code:
HC245M
In-stock:
7015

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CD74HC245M Product Details

The CD54HC245, CD54HCT245, and CD74HC245, CD74HCT245 are high-speed octal three-state bidirectional transceivers intended for two-way asynchronous communication between data buses. They have high drive current outputs which enable high-speed operation while driving large bus capacitances. They provide the low power consumption of standard CMOS circuits with speeds and drive capabilities comparable to that of LSTTL circuits.

The CD54HC245, CD54HCT245, CD74HC245M and CD74HCT245 allow data transmission of the B bus or from the B bus to the A bus. The logic level at the direction input (DIR) determines the direction. The output enable input (OE\), when high, puts the I/O ports in the high-impedance state.

The HC/HCT245 is similar in operation to the HC/HCT640 and the HC/HCT643.

Feature

  • Buffered Inputs
  • Three-State Outputs
  • Bus Line Driving Capability
  • Typical Propagation Delay (A to B, B to A) 9ns at VCC = 5V, CL = 15pF, TA = 25°C
  • Fanout (Over Temperature Range)
    • Standard Outputs. . . . . . . . . . . . . . . 10 LSTTL Loads
    • Bus Driver Outputs . . . . . . . . . . . . . 15 LSTTL Loads
  • Wide Operating Temperature Range . . . -55°C to 125°C
  • Balanced Propagation Delay and Transition Times
  • Significant Power Reduction Compared to LSTTL Logic ICs
  • HC Types
    • 2V to 6V Operation
    • High Noise Immunity: NIL = 30%, NIH = 30% of VCC at VCC = 5V
  • HCT Types
    • 4.5V to 5.5V Operation
    • Direct LSTTL Input Logic Compatibility, VIL = 0.8V (Max), VIH = 2V (Min)
    • CMOS Input Compatibility, Il ≤ 1μA at VOL , VOH
Description

The CD54HC245, CD54HCT245, and CD74HC245, CD74HCT245 are high-speed octal three-state bidirectional transceivers intended for two-way asynchronous communication between data buses. They have high drive current outputs which enable high-speed operation while driving large bus capacitances. They provide the low power consumption of standard CMOS circuits with speeds and drive capabilities comparable to that of LSTTL circuits.

The CD54HC245, CD54HCT245, CD74HC245 and CD74HCT245 allow data transmission of the B bus or from the B bus to the A bus. The logic level at the direction input (DIR) determines the direction. The output enable input (OE\), when high, puts the I/O ports in the high-impedance state.

The HC/HCT245 is similar in operation to the HC/HCT640 and the HC/HCT643.

Technical Parameters

Logic Type Standard Transceiver Maximum Operating Temperature + 125 C
Logic Family HC Package / Case SOIC-20
Number of Channels per Chip 8 Packaging Tube
Input Level CMOS Function Tri-St. Octal Bus
Output Level CMOS Minimum Operating Temperature - 55 C
Output Type 3-State Mounting Style SMD/SMT
High Level Output Current - 5.2 mA Number of Circuits 8
Low Level Output Current 5.2 mA Polarity Non-Inverting
Propagation Delay Time 110 ns Factory Pack Quantity 25
Supply Voltage Max 6 V Supply Current 80 uA
Supply Voltage Min 2 V

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Texas Instruments, Inc

TI
Texas Instruments Incorporated designs and manufactures analog technologies, digital signal processing (DSP) and microcontroller (MCU) semiconductors. TI is a leader in semiconductor solutions for ana...
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